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User Manual 1314-1412 BE6011-16 - Login

1. Unselect All Select All 6 Cursor Values Graphic Window 1 Left Cursor 376 Right Cursor 391 Soe Paes 4 Carbon monoxide pv 5 322 5 399 5 505 0 054 B TVOC ref Methane p 301 920 0 238 W Water Vapour pv 6 Minimum Average 0 003 748 A 0 078 T Temperature C 48 100 i 0 062 NUM The Download dialogue see Fig 14 12 is divided by index cards into three calibration types Zero point Humidity interference and Gas span calibration The names of the calibrated gases for the different filters are listed and opposite each filter position are 5 check boxes These boxes represent the 5 filter banks for each optical filter The check boxes provide 4 types of information The white boxes represent filter banks containing no calibration factors you can freely enter calibration factors here without losing any existing information The white boxes with a red shadow already contain calibration factors you can download the new factors to these filter banks but the existing information will be lost The ticked check boxes with a black shadow are the computers Suggestion as to where the new calibration factors should be downloaded it is normally these positions you would select when performing a recalibration of the monitor However you are free to remove the tick from the check box and place it elsewhere or place more than one tick for a filter Several ticks enables calibration
2. D E and W see Fig 15 1 Before leaving the factory a special water filter is mounted in the position marked W and user chosen optical filters are mounted in the other positions of the carousel If less than 6 optical filters are installed in the carousel blank plates are mounted in those positions of the carousel where no optical filter has been installed Fig 15 1 The filter carousel in the Monitor 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 261 of 280 Chapter 15 15 1 1 BE6011 16 Blank plates may only be removed from the carousel if they are replaced by a chosen optical filter Each blank plate is held in position on the wheel by three lugs see Fig 15 1 The blank plate can be taken out of the mounting hole by bending the metal lugs towards the centre of the plate using your fingernail The chosen optical filter is installed in the open mounting hole and locked into position on the carousel with a locking spring Installing an Optical Filter in the Monitor Important Always use gloves when handling the optical filters 1 Remove the top lid For 1314 see section 2 3 1 and for 1412 see section 2 3 2 2 Remove the three screws which holds the filter wheel pulley 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 262 of 280 Chapter 15 3 Remove th
3. ssssssssssnsrenrrenrenrrrnnrrrnrnnrnrnnnnrnenrrnenenrrnerrunrnne 236 DAL Spal CID aO eraa a A T AO AS OET rene 237 14 12 Calibration of the Water vapour Filter Stand alone USC cccc cece cece ee eeeeeeeeeeenees 250 14 13Setting up a Combined Zero point and Humidity interference Calibration Stand alone WS ciugubsemecnauauatwee sare E E PE teat tun ie E E EE A E E E PAE E E T 256 14 14 Setting up any Combined Calibration Stand alone USE s ssssssssssssrersrsnrererrsrerse 258 Chapter 1 5 Installing the Optical Fte Sncnoninne ea E A 260 LSL NTOdUC CHON errre aas EAEE OAIT AEn 261 Chapter 16 Messages Related to Calibration c ccccscessseeeceeeeeeccenseeeeeteenseecegnsaatteesenteeugaennntes 265 16 1 Successful Calibration MESSAGES cacsiidsrcctessdidinds ti n a ra Aa 266 16 2 Successful Calibration MESSAGES ccccccsesseeeeeeeetccnseeeeeeeeeseegaseeenteeseeseauaaanneesengs 266 16 3 Invalid Calibration MESSAGES ws ewiianeiicaesasa abun a a a A A a 267 16 4 Error Messages Displayed when the INFO button is used ssesesssesssnsnnrernrerrrnrnrrerns 267 Chapter 17 Warning and Error Messages s sssssssssrrersrrnrsrrrrnrerrnrsrrrrnrnrenrnrrnrrrnrerenrerrrrnnen 274 Warning and Error Messages grira rinira A A A 276 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 3 of 280 Safety Considerations 1314 Photoacoustic Multi gas
4. Alarm Limit 2 Instantaneous Alarm Limit 1 Rolling Ava HE 10 min IV PC Default Sound Gas Monitor Relay 1 I Gas Monitor Beep Tl Gas Monitor Relay 2 Add New Insert Before Remove Alarms as Cancel Defaut mmf Parameters selected using radio push buttons These are often parameters that are similar to each other But only one of these parameters can be selected at any one time Check Boxes These are commonly used for functions where more than one can be selected simultaneously When the tick is displayed the function is selected Definable values Some parameters require a value defined This value must lie within the permitted range If you enter a value outside the range a warning appears on screen telling you to enter a value which is within the range Stand alone Use Whenever you are choosing parameters and or entering parameter values via the front panel push keys two options are available A lt gt v SELECT HUMIDITY UNIT Tdew CANCEL DEFAULT y NN an La BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 90 of 280 Chapter 6 BE6011 16 CANCEL This option appears over the S1 select push button If you change the value of a parameter on the display screen and then decide that the new value is not correct the original parameter can be brought back to the screen by pressi
5. BE6011 16 A B C and D are installed in your Monitor and have been calibrated Suppose the calibration data block of your Monitor contains the information shown in Fig 14 14 notice no filter is installed in position E Suppose you now install an optical filter in position E This filter has to be fully calibrated Before performing a zero point and humidity interference task one of the following filter banks must be made active Filter bank no 3 4 or 5 for filter A Filter bank no 2 3 or 5 for filter B Filter bank no 2 3 or 4 for filter C Filter bank no 2 3 4 or 5 for filter D Suppose you make filter bank no 3 active for all the above filters and filter bank no 1 active for filter E Then after a zero point calibration the calibration data block would contain the information Shown in Fig 14 15 None of the original calibration data has been overwritten by the newly calculated calibration factors Fig 14 14 Illustration of the calibration data stored in the filter banks of filters A to D before a zero point calibration task Concentration offset factor Humidity gain factor Gas conversion factor for gas C5 Gas interference on filters DAR et D Y and E Concentration offset factor Humidity gain factor for gas B4 Gas conversion factor Gas interference on filters A and C to Ld gh Concentration offset factor Humidity ga
6. Cancel 5 Select OK to make the actual print out of the selected window Fig 8 13 Print of the numeric window 1412 Serial 710 0049312 04 06 14 09 14 01 Meas Mo A Carbon monoxide B T OC ref Methane e water Yapour P Air Pressure m m d C mbar 145 0 121 2 314 1019 149 0 010 2 412 10149 150 0 242 2 323 1019 151 0 023 2457 1019 152 0 056 3 128 1007 153 0 231 3 1449 1007 154 0 198 3 105 1007 155 0 320 3 183 1007 156 0 329 3 060 1007 157 0 156 3 151 1007 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor LumaSense Technologies A S Page 141 of 280 Chapter 8 Fig 8 14 Print of the graphic window Carbon monoxide pprm FP Air Pressure mB Bar B T oOC ref Methane pproi and again 1019 1019 1018 1018 19 1017 18 1017 17 1016 16 1016 1015 1015 1014 1014 1013 1013 1012 1012 1011 1011 1010 1010 1009 1009 1008 1008 1007 41007 z3 F al a O e mM Ww Bb in om oO oo oOmomomomomM oom om oon ma D i a O an S a O a D S y D m lun oe sl And the statistical data for either the graphic or the numeric window can be printed out using two cursors see section 8 4 2 Fig 8 15 Print of the cursor value window when using two cursors Left Cursor 155 Right Cursor 157 No of Samples 4 Minin Average Maximum Std Dev slope Carbon monoxide pprij 0 329 0 2 47 0 156 O 076 O 002 TYO ret Methane ppri 3 060
7. Note that during the zero point calibration of filters A to E task 1 shown below and during the combined zero point calibration of filters A to E and the water vapour filter task 2 shown below a zero gas supply is attached to the air inlet of the Monitor The Monitor measures the signal in the cell using the water vapour filter and all the other installed optical filters Signals measured with filters A to E enable the concentration offset factors for filters A to E to be stored in the filter banks which are active during calibration However the signal measured with the water vapour filter is used differently In Task 1 The signal measured with the water vapour filter is used to compensate all measured signals for any interference caused by the presence of any residual water vapour in the zero gas supply In Task 2 The signal measured with the water vapour filter is used to update the concentration offset factor for the water vapour filter This means that the signals measured with filters A to E cannot be compensated for the presence of any water vapour present This is why it is vitally important to use perfectly dry zero gas during this task Please refer to section 14 7 3 for details about how to perform a zero point calibration task 14 12 3 Setting up a Span Calibration of the Water vapour BE6011 16 Filter Remember that span calibration of the water vapo
8. This indicates that the Monitor stopped and then started up again sometime between the previous sample time and the time which appears alongside this message Only 1412 The symbol E is replaced by the text User Event NumberX This indicates that the EVENT button was pressed while this measurement cycle was being performed The number indicates the total number of events which have been marked during this monitoring task at the time this sample was taken Gas Marks The symbol B is replaced by a straight line which indicates that the Monitor was unable to calculate the concentration of the named gas in this sample BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 155 of 280 Chapter 9 Other Marks Used re This symbol indicates either 1 that this gas was not measured or 2 that this gas was not selected to be printed out see section 12 5 9 3 Storage Space in the Display Memory BE6011 16 Table 9 1 illustrates the space which is required to store individual measurement results If 5 gases and water vapour are being measured then 37 bytes of space are required to store measurement results from one measurement cycle whereas only 24 bytes of space are required if 3 gases for example gas A E and water vapour W are measured If only one gas for example gas A is being measured then only 15 bytes of space are required to sto
9. 14 1 About the Installed Optical Filters In collaboration with INNOVA Sales Engineers you have chosen the optical filters that are best suited to your measuring task Each of these optical filters has been installed in one of the positions marked A B C D or E of the filter carousel wheel in your Monitor A special optical filter which is selective to water vapour is always installed in position W Each optical filter has to be span calibrated with the gas it is to measure If this span calibration is not performed the Monitor is unable to measure accurately Each filter in the carousel has to be fully calibrated before the Monitor can perform accurate gas measurements The practical calibration procedure is fairly simple it involves performing measurements with the Monitor while various gas supplies are at tached to its air inlet A full calibration of the water vapour filter SB 0527 involves e Zero point calibration using a zero gas e Span calibration using a known concentration of water vapour A full calibration of the optical filters in position A to E involves e Zero point calibration using a zero gas e Humidity interference calibration using water vapour e Span calibration using a known concentration of the gas this filter is to measure e Cross interference calibration when this is necessary If the gas to be measured by filter A actually absorbs l
10. 2004 06 18 11 40 Page Cross Interference Calibration performed 2004 06 18 Carbon monoxide interference on Filter B Filter C Filter D E Filter 0 00000E 00 14 3 3 Checking and Changing Optical Filter Parameters BE6011 16 Before starting calibration it is always wise to check that information about the installed optical filters has been entered correctly in the active set up of the Monitor If the incorrect UA number is entered for the optical filter in a particular position the incorrect optical filter factors will be used in the calculation of the calibration factors and calibration will therefore be useless The UA number can only be changed using the push buttons on the front panel of the monitor 1 Press 53 53 The following text appears on the screen display CHECK AND OR CHANGE SET UP FOR FILTER A NO YES LumaSense Technologies A S Page 206 of 280 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor Chapter 14 2 Press s3 and the following text appears on the screen display SELECT UA NUMBER FOR FILTER A 0984 PRESS ENTER TO CHANGE VALUE The UA number of the filter installed in position A should have already been checked see section 14 3 2 WARNING If this number is changed all calibration data for this filter in all 5 filter banks will be deleted i e lost and the filter will have to be fully calibrated again before it can be used I
11. 8 5 1 BE6011 16 If something happens or you change something during a monitoring task or you just want to indicate a measurement for some reason this is possible using the Insert User Event option The measurement results are marked by a vertical line with a Keyed in User Event Text at the top in the graphic window and a horizontal line with the event text at the end of it in the numeric window User events can be inserted Previous measurement Online only this is the measurement prior to the one currently being measured Next measurement Online only this is one currently being measured The event marker first appears when the measurement is displayed At the cursor this is only possible when the cursor is displayed The marker appears at the cursor but remains there after the cursor is moved This is the only way to insert User Events when using the Presentation program When the presentation option is used to view measurement data the user event markers can be displayed or hidden depending on the settings in the Window Properties dialogue see section 8 2 1 and section 8 3 1 Inserting a User Event Marker If you want to insert a User Event marker at the cursor position the single cursor Pull down the Edit menu Click on User Event and a new dialogue box opens Online only click on the radio button for the desired position Fig 8 5 The User Event window 1314 Photoacoustic Multi gas Monito
12. BE6011 16 Deleting Data from Background Memory To delete data which has been stored in Background Memory Press s3 LOCATION NUMBER 1 PRESS ENTER TO CHANGE VALUE Use the direction keys to select the location number After selecting the chosen location number the display will show the starting time of the oldest data stored in the Background Memory If the starting time of the oldest stored data to be deleted corresponds with the starting time shown on the display screen then press S 1 and then S2 to accept that the data will be deleted from Background Memory Obtaining Information in Memory Mode It is not necessary for the user to remember the numbers of the locations in Background Memory which have been used to store data When the Monitor is operated in Memory mode users can at any time find out which locations are used and what percentage of the Background Memory s total data capacity has been used by Pressing the push button LOCATION S USED 1 3 4 5 7 o alte 53 OF MEMORY USED TIME 10 26 The numbers appearing on the above display are those which contain stored data The Monitor will show the above Information text display for a short period of time and then automatically change back to the text which was showing on the display before the push button was pressed 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 178 of 280 Cha
13. DATA IN DISPLAY MEMORY RECORDED FROM 2004 01 16 09 50 TO 2004 01 16 10 04 Note that the screen showing the overview of gas concentrations measured during any particular measurement cycle is no longer Shown when the monitoring task has been stopped 2 Press P This causes the following text to appear on the screen FILTER A USED TO MEASURE the name of the gas being measured by Filter A will appear here 3 Press V to scroll through the following data displays GAS A MAX 84 5E 00 u 8 03 00 ALARM 1 MIN 7 42E 00 o 2 36E 00 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 71 of 280 Chapter 4 4 4 10 Task A the name of the gas being measure by Filter A will appear here 972 06 mBar 2004 01 16 09 50 32 7 42 mg m3 A the name of the gas being measure by Filter A will appear here 972 06 mBar 2004 01 16 09 51 33 7 43 mg m3 Press gt so you can scroll through the list showing water vapour s results If you do not wish to view the results anymore press I this acts as a go to head function Changing Gas concentration Units after a Monitoring The unit mg m was chosen for gas concentrations in the monitoring task which was set up in section 4 4 4 As long as mg m is the active concentration unit that is the unit selected while operating in Set Up mode this is the unit which will be used to express gas concentrations on the display
14. If you select a Water Vapour Span Calibration remember to enter the correct water concentration value Now continue from step 8 in section 14 5 1 14 9 Humidity interference Calibrations Stand alone Use As previously mentioned the humidity interference calibration task is not selective This means that you cannot choose humidity BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 231 of 280 Chapter 14 BE6011 16 interference calibration of a single filter in the carousel for example when a new optical filter has been installed When you perform a humidity interference calibration then all the installed filters will be humidity interference calibrated If it is only a newly installed optical filter which needs to be humidity interference calibrated then the same procedure used for a zero point calibration of an individual filter must be used see section 14 6 1 In this way you can protect your original humidity gain factors 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 232 of 280 Chapter 14 14 9 1 Setting up a Humidity interference Calibration Task Fig 14 18 Schematic diagram showing how to set up a humidity interference calibration task follow the arrows PERFORM ZERO POINT CALIBRATION NO YES using dry zero gas PERFORM HUM INTERFERENCE CALIBRATION NO YES using w
15. Make sure that no cotton fibres remain on the mesh of the retaining disc otherwise they could be sucked up into and block the measurement system when the analyzer is operated Notes Only proceed to the next step when the acetone has completely evaporated from the cleaned surfaces Each of the fine filter papers DS 0759 are packed between two pieces of packing paper The fine filter paper is always white in colour Hold the stub end of the unit between your thumb and fingers Lift the retaining disc with the tweezers and place it back into position in the unit Refer to Fig 13 8 Remove a new fine filter paper from its packaging using the tweezers Hold it by its edge Carefully place the filter paper over the top of the retaining disc so that it is held in position by the small lip on the rim of the unit 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 193 of 280 Chapter 13 Screw the coarse air filter over the end of the external air filtration unit Make sure that the fine filter paper remains in its correct position directly over the retaining disc 13 2 Cleaning the Filter in the Ventilation Unit A small ventilation unit is mounted on the back panel of the Monitor see in Fig 13 9 The ventilating fan in this unit circulates air through the Monitor to keep it cool To ensure that the air being drawn into the Monitor is free of particles a filter pad is placed be
16. NO YES using perfectly dry zero gas PERFORM WATER VAPOUR SPAN CALIBRATION NO WATER VAPOUR CONC End of the set up section of the calibration task PRESS ENTER TO CHANGE VALUE PERFORM PRACTICAL CALIBRATION TASK using zero gas containing an accurately known concentration NO YES of water vapour 900169 Ile If the span gas used during a span calibration task absorbs any of the light from the other installed optical filters then it is advisable to select to perform a cross interference calibration This means that during span calibration the signal in the cell is not only 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 246 of 280 Chapter 14 measured with the water vapour filter and the filter being span calibrated but is also measured with all the other installed optical filters Note that cross interference calibration cannot be performed alone it has to be performed together with span calibration 1 For each filter being span calibrated enter the No of the filter bank where you wish the Monitor to store the conversion factors which will be calculated during the span calibration task 2 Press 53 3 S1 then the following text will be displayed PERFORM ZERO POINT CALIBRATION NO YES 3 a If you only wish to span calibrate filters follow the set up of a Span calibration task by following the black arrows in the schematic diagram shown in
17. These marks are described in section 9 2 2 and section 9 2 3 Table 5 1 Dependence of Monitor s response after a partial reset to its operating condition at the time of the partial reset Monitor last used Task being performed Task started after a while in PARTIAL RESET Measurement Completes the monitoring task mode Looking at measurement Measurement results are Display results on the display screen shown on the display from the beginning again Set up mode Changing set up parameters Measurement results are which control the operation shown in the display from the of the Monitor beginning Memory mode Handling measurement Completes any interrupted task results which are stored in and then measurement results Display Memory and are shown in the display from Background Memory the beginning Interface Obtaining hard copies that Print out is stopped and is print outs of for measurement results are example measurement Shown in the display from the data beginning BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 81 of 280 Chapter 5 5 3 4 Front Panel BE6011 16 Full reset and or Partial Reset of the Monitor via its There are two well defined levels of reset By pressing RESET the following text appears on the display screen SELECT RESET TYPE PARTIEL FULL If 53 is pressed you can come out of reset mode without
18. This is done by operating the Monitor in Memory mode and selecting to RECALL data see section 11 3 2 When data is recalled to Display Memory it is not transferred from Background Memory to Display Memory it is only copied into Display Memory so there is no risk of losing it In Display Memory the user can scroll through the data Data stored in Background Memory can be deleted by operating the Monitor in Memory mode and selecting to DELETE data see section 11 3 3 Effect of a Calibration Task on the Monitor s Memory Before calibration of the optical filters in the Monitor the UA numbers of each of the installed filters is entered into the active set up of the Monitor This enables the Monitor to find a set of numerical parameters which describe each numbered optical filter this information is found in the Read Only Memory of the Monitor These numerical parameters are called Optical Filter Factors 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 169 of 280 Chapter 11 BE6011 16 During a CALIBRATION TASK the Monitor uses these Optical Filter Factors to calculate the calibration factors for each installed optical filter As explained in section 11 1 2 by entering a Filter Bank No in the active set up before calibration of any particular filter with any particular gas each filter can be calibrated to measure up to five different gases and the filter b
19. This message indicates that a two point span calibration cannot be performed If Vi is found to be greater than Vin 0 then the Monitor will try to fit the two measured points onto a curve whose shape has been pre determined by INNOVA by an iterative process The iterative process involves scaling on the concentration and signal axes until the two points fit the curve within certain tolerances GAS X CALIBRATION IMPOSSIBLE MAX ITER If after 255 iterative processes the two points cannot be fitted onto the curve within tolerance limits this message is displayed This could indicate that the wrong concentration has been entered in the set up of the span calibration task which does not relate to the measured signal Alternatively it could indicate that there is a linear relationship between the gas signal in the cell and the 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 270 of 280 Chapter 16 16 4 2 BE6011 16 concentration of the gas in which case only a single point span calibration is required SPAN CALIBRATION IMPOSSIBLE This message is associated with the span calibration of the water vapour filter The above message indicates that the Monitor cannot calculate the gas conversion factor This could indicate that the concentration of water vapour used during the calibration was too low this could either be due to an incorrectly entered wat
20. and use the direction keys to change its value to 1 b Press to accept the value 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 60 of 280 Chapter 4 4 4 5 4 4 6 BE6011 16 The text which appears on the display during the next step is really self explanatory and it is therefore possible for you to follow why the button pushes listed in the next step will set up the monitoring task which is described at the beginning of section 4 4 4 3 Press 53 S1 53 S1 53 then press S1 until the text MEASURE WATER VAPOUR appears on the display 4 Press the 53 button to answer YES to measure water vapour Store Measurement History The following screen is displayed STORE MEASUREMENT HISTORY NO YES a If you select to answer No then only the last measured values are stored in the display memory b If you select to answer Yes all measured values are stored in display memory De Press the 3 button to answer YES to store the measurement history Once this step is complete monitoring task number 1 has been set up and the display moves to the previous head of the Set Up Tree 6 Press SET UP to exit the Set Up mode Starting a Monitoring Task Note before a monitoring task can be started the Measurement Units Monitoring Task Settings and Environment Parameters must be defined see sections 4 4 2 4 4 3 and 4 4 4 This section will
21. files This prevents you from adding additional measurement data to the database or corrupting the existing data This is of particular use when restoring Calibration databases that must not be changed With the Database Administration program running 1 Click on Restore and the dialogue shown in Fig 10 2 is displayed Fig 10 2 The Select Backup files dialogue Select backuphile File name System Files of type Backup files meas cal syb Lancel T Open as read only ee 2 Use the standard Windows browser procedures to select the databases to be restored 3 If you want to restore the database s as a read only file s click in the Open as read only check box 4 Click on Open The selected files are restored to the Gas Monitoring Software 7304 working directory BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 160 of 280 Chapter 10 10 4 BE6011 16 Click on Cancel to exit the Restore dialogue when all the desired databases have been restored Delete Databases This option enables you to delete measurement and calibration databases from the Software working directory without disturbing the filter information Note using Explorer to delete files may result in information in remaining databases being damaged or deleted by mistake With the Database Administration program running 1 Click on Delete and the dialogue shown in Fi
22. is installed in the carousel this display does not appear in the calibration set up PERFORM CROSS INTERFERENCE CALIBRATION NO YES using span gases of known concentration PERFORM GAS SPAN CALIBRATION NO YES using span gas of known concentration GAS CONC PRESS ENTER TO CHANGE VALUE CALIBRATE WATER VAPOUR FILTER NO YES End of the set up section of the calibration task PERFORM PRACTICAL CALIBRATION TASK NO YES BE6011 16 CALIBRATE A WITH gas name appears here NO SINGLE POINT TWO POINT HIGH GAS CONC PRESS ENTER TO CHANGE VALUE This display ONLY appears if you have selected to perform zero point calibration of filters installed in positions A to E PERFORM WATER VAPOUR ZERO POINT CALIB NO YES using perfectly dry zero gas PERFORM WATER VAPOUR SPAN CALIBRATION NO WATER VAPOUR CONC PRESS ENTER TO CHANGE VALUE using zero gas containing an accurately known concentration of water vapour 900170 le 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 227 of 280 Chapter 14 14 7 3 Use BE6011 16 Use the Set up Tree in Fig 14 16 to help you navigate through the different screen displays Note before starting a calibration S I T see section 14 3 3 and Flushing Type see section 7 2 need to be set so that they are the Same as those values used when monitoring 1 For each installed filter
23. radio button and define the stop time 5 Press OK to start the monitoring task Stopping the Monitoring Task 7 4 2 If no pre set monitoring period is defined then to stop the monitoring task pull down the Sequence menu and click on Stop PC Use using the Offline Program Before a monitoring task is started the monitor should be warmed up and set up as described in section 7 2 must be completed and downloaded to the monitor 1 Press MEASURE The following text appears on the screen ACTIVE TASK MONITORING TASK NUMBER 1 START TASK DELAYED TASK CHANGE TASK BE6011 16 Please note if you do not use one of the select keys within a Short time after the above text appears the Monitor will automatically stop operating in Measure mode the light emitting diode in the key switches off If this happens just press again 2 To start the measurement immediately press S1 To delay the start press S2 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 111 of 280 Chapter 7 The following warning then appears on the display WARNING DISPLAY MEMORY WILL BE DELETED PROCEED STOP Display Memory is where the Monitor stores the results of all measurements while it is performing a monitoring task If the monitoring task is stopped and then started again all the data already collected will be deleted from Display memory However the data in Disp
24. the environment in which the monitor is working contains large quantities of particulate material suspended in the air When the monitor is making measurements we recommend that a length of Teflon tubing of up to 50 metres in length is always attached to the stub of the air inlet see Fig 13 1 and that the special external air filtration unit UD 5023 optional accessory shown in Fig 13 3 is always attached to the free end of the sampling tube by means of the small stub An external coarse metal air filter prevents large particles insects etc being drawn into the unit while inside the unit is a fine 10um filter paper which prevents any finer particles from entering the Teflon sampling tube The fine filter paper in this unit must also be changed regularly at least as frequently as the fine filter paper in the internal fine air filter Fig 13 3 The external air filtration unit UD5023 used with the Monitor optional accessory Changing the fine filter paper in both the internal and external air filtration units is explained step by step in the following two sub sections 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 189 of 280 Chapter 13 13 1 1 Changing the Filter paper in the Internal Air filtration Unit While you do this we recommend that you wear clean rubber gloves Tools and equipment required Acetone analytically pure Spare fine filter
25. the monitoring system controls the flushing by selecting the optimum flushing time This time can vary as this option takes into account the cleanliness of the external air filters and the length of the sampling tube Therefore the sample tube length must be defined BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 98 of 280 Chapter 7 Table 7 4 The acceptable values and the default values of the length of the Sampling tube Monitor Display Text Acceptable Values Default Value mepe Mil TUBE a TUBE Fixed Time there are two selections here Chamber which is always selected with this option and Tube See Table 7 5 for the acceptable values Table 7 5 The range of acceptable values and the default values for the chamber and sample tube flushing times Acceptable Values _ee Default Value Tube O off 3 to 120s 1s 35S Water Interference the Monitor is capable of measuring water s contribution to the signal measured in its analysis cell The user can decide whether or not the signal should be compensated for water s contribution It is suggested that water should be compensated for in all measuring situations except where extremely dry gases are being measure Cross Interference if any interferent other than water vapour is present in the ambient air sample the Monitor can cross compensate for the interference caused by its prese
26. tween the fan and grid which covers it This filter needs to be periodically taken out and cleaned We recommend that this task is done at least as often as calibration and more frequently if the Monitor is working in a very dusty atmosphere or an atmosphere containing high concentrations of other particulate matter Use a pozidrive screwdriver to unscrew the two screws on the grid cover Remove the filter pad from inside the grid cover Wash the filter pad in warm water containing some liquid soap Rinse all the soap out of the filter by running clean water through it and let it dry thoroughly Place the clean thoroughly dry filter pad inside the grid cover Screw the grid cover firmly back in place over the ventilation unit Fig 13 9 Back panel of the 1412 showing the ventilation unit BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 194 of 280 Chapter 13 Fig 13 10 Back panel of the 1314 showing the ventilation unit 13 3 Cleaning the Instrument It is recommended to clean the instrument using a damped cloth BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 195 of 280 Chapter 14 Chapter 14 Calibration of the Optical Filters July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 196 of 280 Chapter 14
27. 1 Displayed Monitoring Task Data BE6011 16 When the Monitor is switched on but not being operated in any mode the screen display text identifies the data stored in its Display Memory by displaying the day and time of the first stored measurement cycle of the monitoring task as well as the day and time of the last measurement cycle of the monitoring task For example DATA IN DISPLAY MEMORY RECORDED FROM 2004 01 16 09 50 TO 2004 01 16 10 04 If the Monitor has just been fully reset then the display will just Show the current time and report that the monitor is ready for use The Set up parameters describing a monitoring task and the measurement data collected during the task are stored as a list in the Display Memory You can scroll through the set up parameters as well as the data collected during the task by using the direction push buttons W to scroll vertically downwards and A to scroll vertically upwards through the list Fig 9 1 illustrates how the data is organised Identification of Measurements This screen provides the date and time of the first and last measurement results which are stored in Display Memory Identification of Each Monitored Gas This display identifies the gases monitored during the task By using the gt push button one can find the names of all the gases which were monitored during the displayed task Statistical Analysis of Measurement Results for Each Gas Using the individual meas
28. 4 Type in the new Password using the A and keys 5 Press Changing the User Level In order to change the User Level Press the function push button on the front of the Monitor The following text is displayed 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 24 of 280 Chapter 2 2 5 4 BE6011 16 CURRENT USER LEVEL IS X CHANGE USER LEVEL CHANGE PASSWORD 1 Press 1 CHANGE USER LEVEL The following text appears ENTER PASSWORD PRESS ENTER TO CHANGE VALUE 2 Press L 3 Enter the current Password using the A and YW keys 4 Press L The following text appears CURRENT USER LEVEL IS X PRESS ENTER TO CHANGE VALUE Press d Use the A and V keys to change the User level Press d Press the function push button to exit Ul OY N CO User Levels in the Gas Monitoring Software 7304 When using the Gas Monitoring Software 7304 the software checks the user level setting of the monitor sja J Calibration can only be activated when user Level 3 is selected on the monitor If user Level 2 or 1 is defined the following error is displayed on screen 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 25 of 280 Chapter 2 Calibration j 3 X K Warning Mot allowed to make Calibration User level 3 must be selected on instrument to make Calibration Use th
29. 6 Use A amp Y to scroll through the options 7 When Tdew is displayed press I The display automatically returns to the head _ of the CONFIGURATION setup branch 8 Press SET UP to exit Setting the Environment Parameters Environmental parameters describe the factors which influence the measurement situation the length of the sampling tube attached to the Monitor and the normalization temperature These parameters are discussed more fully later on in this section 1 Press SET UP S1 and then 53 This brings you into the Environment branch of the Set Up Tree where the following text is displayed SELECT FLUSHING MODE AUTO FIXED TIME 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 56 of 280 Chapter 4 The Auto option regulates the flushing time depending on the Sampling tube length and the cleanliness of the air filter as the filter become dirtier the flushing time will increase The Fixed Time option is divide in to two parts chamber flushing time and sample tube flushing time Once defined these times are constant regardless of the sampling tube length and cleanliness of the filters Auto Option a Press Si and the following display appears LENGTH OF SAMPLING TUBE 0 00 m PRESS ENTER TO CHANGE VALUE b Press Mi c Use the direction keys to define the tube length A and VW to increase and decrease the numbers respectively lt and
30. Fig 14 22 b If you wish to perform cross interference calibration as well as Span calibration follow the set up of the combined calibration task by following the black arrows in the schematic diagram Shown in Fig 14 23 The following text will appear on the display CON N ECT the name of the gas appears here XXXXXXmg m AND PRESS ENTER WHEN READY Note if the gas concentration on the Analysis Certificate is given in ppm then the following formula can be used to convert from parts per million units ppm to mg m For a gas at 20 C and at 1 atmosphere pressure Concentration in mg m concentration in pom x Molecular Weight in 24 04 14 11 3 Performing a Span Calibration Stand alone Use The general equipment necessary to perform a calibration task is described in section 14 4 Follow the procedure from step 1 to step 3 inclusive and then continue as follows BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 247 of 280 Chapter 14 BE6011 16 a Connect the free end of the teflon tubing mentioned in step 3 to the pressure valve on a cylinder of calibration gas b Press J c Gently open the pressure valve on the gas cylinder and regulate the flow of gas so that when the Monitor s pump is running there is a positive flow of gas out of the flow meter This will ensure that the calibration gas is not diluted by at mospheric ai
31. Fig 8 7 The User Event window Event Time Hel At Cursor Position 27 C Previous tleasuremert C Nest Measurement EES pS eed Cancel 4 Now delete the text in the Events Text field 5 Click on OK 8 6 Status Windows There are two status windows Alarms status and Measurement status These can be displayed when the Online program is being used 8 6 1 Alarm Status If an alarm has been defined in the Sequence Settings dialogue see section 7 3 and that alarm has been triggered then by opening the sequence settings alarm index card window you can see which gas BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 133 of 280 Chapter 8 triggered it When an alarm is triggered a red triangle flashes until the alarm has been confirmed using the Confirm soft key Furthermore all the alarms can be confirmed at once using the Confirm All soft key See figure 8 8 Fig 8 8 The Alarm Status window I icix Curent Alarm Omitragen oxide 0 100 ppr Limit 1 PC bf nitrogen oxide 0 200 ppr Limit 2 PC Confirm All 8 6 2 Measurement Status This informs you if the measurement is active or idle when the last measurement was made and the latest measurement values for all the measured parameters even if they are not displayed in the graphic or numeric windows Fig 8 9 The measurement status window Status Inf
32. Gas Set up Active A Ethanol amp water Sample Integration Time Normal 5s Alarm index card None active i e none displayed in the Alarms field With the monitor and the PC connected properly as described in section 2 2 and section 2 5 and the Gas Monitoring Software 7304 already running 1 Click on Online to start this option 2 Pull down the Task menu Click on New and the New Measurement Task dialogue is displayed see Fig 4 5 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 45 of 280 Chapter 4 Fig 4 5 The New Measurement Task dialogue Task View About os eeo de esr al ala el Zia e Enter description a Gas Monitor Serial 710 002 Cancel Type in the desired name for the monitoring task i e Area 1 Press OK The name you have just typed in appears at the top of the window An extended menu bar and a graphic window appear 3 Pull down the Sequence menu Click on Settings and the Sequence Settings dialogue appears see Fig 4 6 Sampling index card 4 Select the settings defined at the start of this section by clicking on the radio push buttons Gas index card 5 Select the Gas index card and select Filter A and the Water Filter by clicking in the check boxes 6 Click in the Sample Integration Time field and select Normal BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacous
33. Level 3 These user levels are password protected Level 1 is the Operator level which enables start stop and reading of measurement results Partial Reset is possible Level 2 is the Expert level which in addition to Level 1 access enables set up of parameters Full Reset is possible Level 3 is the Super User level which allows all possible operations including calibration 2 5 1 Default settings for User Level and Password Before dispatch from the factory the User Level and the Password are set to the following default setting User Level 3 and the default settings for the Password is Password 5 times These settings are to be used to change user level or password the first time BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 23 of 280 Chapter 2 2 5 2 2 5 3 BE6011 16 Changing the Password In order to change the Password Press the function push button on the front of the Monitor The following text is displayed CURRENT USER LEVEL IS X CHANGE USER LEVEL CHANGE PASSWORD Press CHANGE PASSWORD The following text appears ENTER PASSWORD PRESS ENTER TO CHANGE VALUE 1 Press to change value The following text appears ENTER PASSWORD CANCEL DEFAULT 2 Enter the old Password using the A and keys 3 Press L The following text appears PASSWORD IS PRESS ENTER TO CHANGE VALUE
34. MOLECULAR WEIGHT OF GAS A 1 000 PRESS ENTER TO CHANGE VALUE 9 Press and use the direction push buttons to enter the molecular weight of the gas to be measured by filter A 10 Press d to accept the molecular weight you have entered on the display screen The following text appears on the screen FILTER A SAMPLE INTEGRATION TIME 5s PRESS ENTER TO CHANGE VALUE 1 Press J and use A and VY to display the desired Sample Integration Time There are seven to choose from 0 5s 1s 2s 5s 10s 20s and 50s _ 12 Press to accept the selected value The following text appears on the screen GAS A HIGH ALARM LIMIT 1 mg m PRESS ENTER TO CHANGE VALUE 3 Press and use the direction push buttons to enter the desired alarm level a 14 Press to accept the entered value Following screen is displayed GAS A HIGH ALARM LIMIT 2 mg m PRESS ENTER TO CHANGE VALUE a U1 Repeat step 13 and 14 to enter the desired alarm level 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 208 of 280 Chapter 14 All the parameters for Filter A are now set and the display moves on to filters B C D and E Repeat steps 2 to 15 excluding step 3 16 All the parameters for Filter W are fixed except for the Sample Integration Time and the two high Alarm limits 17 Press and use A and VW to display the desired Sample Integration Time 18 Repeat s
35. Memory RAM A software fault A defective back up battery A defective Source Memory EEPROM A software fault A defective back up battery A defective Working Memory RAM A software fault A defective back up battery A defective Working Memory RAM A software fault LumaSense Technologies A S Page 277 of 280 Chapter 17 A D INTERRUPT FAILED AIR SHUNT BLOCKED SAMPLE ABORTED CHOPPER FAILED INTERNAL TEMPERATURE OUT OF RANGE IR SOURCE TEMPERATURE OUT OF RANGE MICROPHONE TEST FAILED PUMP TEST FAILED MODULE STATUS ERROR DETECTED BE6011 16 1314 Photoacoustic Multi gas Monitor A D converter was not able to collect the necessary number of signal measurements to ensure an accurate concentration measurement The pressure of air in the analysis cell is too high The microphones risk being damaged by exposed to such pressure The chopper wheel is not running The temperature in the analysis cell is either too high or too low As the Monitor is operating out Side its temperature specifications accurate measurements can not be guaranteed The temperature of the infrared light source is either too high or too low As the IR source is oper ating outside its temperature specifications accurate measurements cannot be guaranteed The signal received from the microphone during the self testing procedure is out of range The pump cannot build up the necessary pressure durin
36. PC must meet the following requirements Hardware A personal Computer Pentium 166 MHz or better Min 64 Mbytes of RAM Min 40 Mbytes of space available on the hard disc VGA monitor or better One RS 232 port Mouse Software Windows NT Windows 2000 Windows XP It is recommended to install the latest version of the Windows Service Pack The software comes complete with an installation program Insert the disc and use the standard Windows procedure to install the software When installing the software you must be logged in as an Administrator that means that you must have administrator rights The users who are going to use the software must have Standard User rights in order to be able to use the software Restricted User rights will not be sufficient to operate the program It is recommended that your system administrator performs the task of installing the program and creates the user logins with the proper user rights to operate the software If you are unsure how to install programs refer to the Windows Help BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 14 of 280 Chapter 2 After the installation is successfully completed five icons appear in the Gas Monitoring Software 7304 program menu These are labelled t ONLINE PRESENTATION Aya CALIBRATION OFFLINE TE DATABASE ADMINISTRATION These icons can be p
37. Std Dev 4 Carbon monoxide pv 5 322 5 399 B TVOC ref Methane p 301 920 302 394 W Water Vapour pv 6 748 6 963 T Temperature C 48 100 48 137 48 47 O Li O O NUM This dialogue informs you which calibration factors have been calculated by placing a tick in the check box The number of check boxes ticked depends on the number of curves marked and not the number of gases measured 14 5 3 Downloading the Calculated Values BE6011 16 When you are finished measuring the raw data and have calculated the calibration factors then you are ready to download the calculated values to the Monitor NOTE calibration factors calculated for a specific filter can not be downloaded to filter banks of another filter 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 218 of 280 Chapter 14 BE6011 16 Fig 14 12 Download dialogue Calibration Factory3 m 7 la x Task Sequence Values Bank Edit View Window About Die a s o otf ae ee ay Sia 2 E 2 GP Graphic Window 1 iz Ei 0 x Carbon monoxide pW T Temperature C B T OC ref Methane uY W Water Vapour uY ZP SHB SHB 48 47 Download Zero Point Humidity Interference Gas r Download Yalues To Banks Carbon monoxide 5 B TVOC ref Methane C n a D n a E n a W Water Vapour 375
38. This is achieved using the Presentation program Note database files cannot be copied or moved using Windows Explorer In order to copy and move files that will continue to work with the Gas Monitoring Software 7304 follow the instructions below 10 2 Backup Databases This option enables you to make a backup copy of your existing databases There are three types of files that can be backed up here Measurement Tasks Calibration Tasks and Filter Information With the Database Administration program running 1 Click on Backup and the dialogue shown in Fig 10 1 is displayed Fig 10 1 The Backup dialogue m Task tpe Measurement Task Calibration Task Cancel Filter Info 2 Click on the radio button to select the type of data to be backed up 3 Select the correct name from the list displayed and click on OK 4 Now define the destination where the backup should be stored and click on OK BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 159 of 280 Chapter 10 A copy of the selected database is now made If you want to use this database again use the Restore option 10 3 Restore Databases This option enables you to restore backup copies of databases so that they may be used again in the Gas Monitoring Software 7304 All backup files made using the Backup option can be restored Restored databases can be restored as read only
39. Units The Units dialogue appears 4 Select the units you want to use in the calibration setup windows and when entering the concentration values The monitor measures raw data so these units do not affect the display data Click on OK 5 Pull down the Sequence menu Click on Settings The Calibration Sequence Settings dialogue is displayed Fig 14 8 Calibration index card 6 Click on the Calibration index card if it is not already at the front 7 Click on the radio button to select the desired calibration type The individual sections named below provide full details Zero point see section 14 7 e Humidity see section 14 8 e Gas span see section 14 11 Gas index card 8 Click on the Gas index card see Fig 14 9 Fig 14 9 Gas Settings dialogue Task Sequence Values Bank Edit View Window About De S Sf o oles EE fe ye Sia el E el A Carbon monoxide wv T Temperature C B TVOC ref Methane uv W Water Vapour uv eines Sequence Settings Gg 1 Calibration Ges Samping B UA0S87 1 TVOC ref Methane gf 16 04 C n a 1 R D n a 1 A a E n a 1 e wW SBO527 1 Water Vapour 18 02 NUM BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 214 of 280 Chapter 14 9 If you have not uploaded the calibration filter gas names and molecular weight information already then do it now Click on the Reloa
40. a 134 a 183 0 041 z Water Vapour Tdew C 13 604 13 526 13 644 0 01s 0 001 hir Pressure mBar 1 007e ts 1L 007eHSs 1 007 e HS 0 055 0 030 8 9 2 Print Monitor Measurement data Using the on line program it is possible to print out the results from the last measurement task including the Monitor settings for this measurement task Note This print out must be made just after the measurement task is stopped before starting a new measurement task In the on line program BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 142 of 280 Chapter 8 1 Pull down the Task menu bar 2 Select Print Monitor Measurement Data see figure 8 16 Fig 8 16 The Task dialogue window for printing Monitor Measurement Data Online onlinetst_protoO1 Oy x Task Sequence Edit wiew Window About Blew Ctrl M Open Chrl 0 Close x Communication VW Water Vapour Tdevw C Units Font 0 Print Ctrl F Print Preview 50 Print Setup 100 Prink Monitor Measurement Data S eo 5 0 Exit CT o Time A Carbon dioxide B Sulphur hexaflourde VV Water Vapour ppm ppm Tdew C 04 05 25 08 36 23 Of BR 0 003 04 05 25 08 37 12 690 177 0 004 04 05 25 11 75 25 aal faa 0 003 04 05 25 11 16 11 018 208 0 004 04 05 25 11 16 51 p08 r3 0 004 04 05 25 11 77 51 bo4 ofS 0 003 F Cursor Yalues Numeric Win
41. a few seconds to perform the data integrity tests and about 3 minutes to perform both the software and hardware test The different tests are explained below 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 79 of 280 Chapter 5 BE6011 16 Software test This test checks the information in the Monitor s software ROM Read Only Memory Data integrity test This test checks the integrity of the data stored in the Monitor s Source Memory i e its EEPROM Electrically Erasable Programmable Read Only Memory and the integrity of the data stored in the Monitor s Working Memory RAM Hardware test This test checks that the electrical mechanical and electronic parts of the Monitor are functioning properly The following parts of the Monitor are checked the pump the valves in the pneumatic system the infra red light source the power supply the filter carousel the motor which drives the chopper wheel the external vibration level to make sure that it does not contribute to the signal measured in the analysis cell the analogue circuitry and the microphones to check that they are functioning properly If you do not wish the Monitor to perform the hardware test during a partial reset you can disable it see section 5 4 3 This also disables the regular self tests If any part of the Monitor is found to be functioning incorrectly a message will appear in the
42. above text appears the Monitor will automatically stop operating in Measure mode the light emitting diode in the key switches off If this happens just press again The active monitoring task number is the number of the monitoring task you wish the Monitor to perform 2 If the monitoring task number displayed is correct then go to step 5 If the number on the display is not correct then press s3 to change the task number This changes the display text to the following SELECT TASK A lt E gt a PN Man Vv 3 Press S1 This causes the following text to appear on the display A lt gt v MONITORING TASK SET UP NUMBER 1 PRESS ENTER TO CHANGE VALUES P N y N 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 114 of 280 Chapter 7 The number appearing on the screen will be a number from 1 to 10 4 Press and use the direction keys to change the monitoring task number to the desired value Then press L again to accept the task number The following text appears on the display screen ACTIVE TASK MONITORING TASK NUMBER 1 gt lt START TASK DELAYED TASK CHANGE TASK 5 To start the measurement immediately press S1 To delay the start press 52 The following warning then appears on the display A v gt PROCEED STOP WARNING DISPLAY MEMORY WILL BE DELETED E y N 6 Press Sil Delayed Start If you
43. above the maximum value With the Online option the scale will widen as the values vary both upwards and downwards Autoscale maximum minimum 0 by selecting this option the axis will always start at zero The top value depends on the maximum value With the Online option the scale will increase when the values exceed the displayed value Autoscale OFF this option enables you to define the minimum and maximum values on the axis This can be of use if you are interested in a particular range Note that with this option the curve s may not appear on the screen When you select this option the scaling icons in the tool bar become active These icons enable you to change the scaling O to E maximum or minimum to iy maximum respectively Single Curve Setup it is here you define which gas curves are allocated to this axis You define their colour the style of line you can even change their units here if necessary Select parameter by clicking in this field the names of all the gases and the atmospheric pressure measured during this monitoring task are displayed Clicking on a parameter name enables you to set up the curves individually Select colour there are seven standard colours to choose from If necessary a user defined colour can be selected By clicking on Define the Windows mixing palette is displayed The standard Windows procedure should be followed Select style there are several styles to choose from T
44. an extra empty flask before being fed to the air inlet of the Monitor Note the length of the respective tubes in the flasks It is vitally important that any water which collects in the extra flask does not cover the short outlet tube B It is very important that the concentration of water vapour used is below the saturated water vapour pressure of the air in the room where calibration is being performed otherwise water vapour will condense out in the analysis cell In practical terms this means that e The Monitor must have time to reach the ambient temperature of the room before a calibration task is performed e The temperature of the water bath you use should be at least 2 C below the ambient temperature of the room where calibration is to be performed So if your ambient temperature is 20 C make sure that the temperature of the water bath you use is set at a maximum of 18 C Fig l14 7 Schematic diagram of the equipment necessary to produce a supply of clean wet air water vapour from zero gas supply ae Outlet tube A water at a A empty constant flask temperature to act as a safety valve 893265 le BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 212 of 280 Chapter 14 14 5 General Settings for a Calibration PC Use The procedures in the following sections assume that all the preliminary tasks described in section 14
45. as the possible cause s of each fault The user must evaluate the significance of each message As long as the fault is detected all measurements will be marked by an asterisk Some faults are easily corrected 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 275 of 280 Chapter 17 Warning and Error Messages The following table gives most of the error and warning messages contained in the test Hierarchy of the Monitor There is a description of each fault as well as the possible cause of each fault The user must evaluate the significance of each message Error Warning Message Description of Fault Possible Cause AIR FLOW TOO LOW AIRWAY SYSTEM BLOCKED ALARM LIMIT EXCEEDED NO INDEX MARK FROM FILTER CAROUSEL BE6011 16 1314 Photoacoustic Multi gas Monitor The air pressure difference created by the pump in the pneumatic airway system tubes and or analysis cell is too low This means that the tubing and or analysis cell cannot be properly flushed out and the sample in the analysis cell is therefore not necessarily new The air pressure difference created by the pump in the pneumatic airway system tubes and or analysis cell is too high The Monitor has measured a concentration of gas greater than the alarm limit concentration entered The Monitor cannot determine the position of its filter carousel 1412 Photoacoustic Field Gas Monito
46. because this was the unit chosen for gas concentration in the active set up The dashed lines which appear after the time will be replaced by a number as soon as the monitoring task has been stopped see section 4 4 8 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 65 of 280 Chapter 4 BE6011 16 After scrolling through the list of individual measurement results for gas A the following text is displayed SAMPLE INTEGRATION TIME W 5s B s C A Carbon monoxide B The last display above shows the up dated overview of the gas concentrations measured during the most recent measurement cycle This display does not appear after the monitoring task has been stopped Data collected during a monitoring task i stored in the Display Memory of the Monitor and therefore before a new monitoring task is started all data stored in this memory is deleted Display Memory has finite size and therefore there is a limit to how much data can be stored in it Once this memory has been filled up all subsequent data collected during the task will start to overwrite the data already collected during the start of the monitoring task Only in this event will the date displayed after the text MONITORING TASK STARTED on the above screen be different from the earliest date on the display shown below which give the most up to date overview of the monitoring task 1314 Photoacoustic Multi gas M
47. carousel was found to be out of alignment If the misalignment is only slight then accuracy of the measurement has not been affected but the accuracy of such a measurement can not be guaranteed y The gas concentration measured during this measurement cycle exceeded the user defined alarm limit resulting in an alarm being triggered To see which gas the Common Mark adheres to open a numeric window BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 127 of 280 Chapter 8 8 4 Using the Cursors 8 4 1 BE6011 16 Cursors can be used in both the numeric and graphic windows The way they are used and the information they provide is the same in both situations Before the cursors can be displayed the Cursor Values window must be opened and the window in which you wish to position the cursor s must be selected Once the Cursor Values window is open you click on the curve in the graphic window or on the value in the numeric window that you are interested in The cursor function is divided into two parts when a single cursor is displayed and when two cursors are displayed Single Cursor When you click in the window a single cursor appears in the graphic window while two cursors appear either side of a single value in the numeric window The Cursor Values dialogue gives several pieces of information Cursor Position this can be given as eith
48. enter the no of the filter bank where you wish the Monitor to store the concentration offset factors which will be calculated during the zero point calibration task 2 Press S3 S3 Sil The following text will be displayed PERFORM ZERO POINT CALIBRATION NO YES 3 Follow the set up of a zero point calibration task by following the black arrows in the schematic diagram shown in Fig 14 16 The following text will appear on the display ZERO POINT CALIB CONNECT CLEAN DRY AIR AND PRESS ENTER WHEN READY Performing a Zero point Calibration Stand alone The general equipment necessary to perform a calibration task is described in section 14 4 Follow the procedure from step 1 to step 3 inclusive and then continue as follows 1 a Connect the free end of the teflon tubing mentioned in step 3 to the pressure valve on a cylinder of zero gas e g pure nitrogen b Gently open the pressure valve on the gas cylinder c Press d Use the pressure valve on the gas cylinder to regulate the flow of gas so that when the Monitor s pump is running there is a positive flow of gas out of the flow meter This will ensure that the zero gas is not contaminated by atmospheric air The following text appears on the screen 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 228 of 280 Chapter 14 BE6011 16 RESULTS NOT YET AVAILABLE PLEASE WAIT Once the first meas
49. explain how to perform a monitoring task for example monitoring task number 1 which was set up in section 4 4 4 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 61 of 280 Chapter 4 BE6011 16 1 Press MEASURE The following text appears on the screen ACTIVE TASK MONITORING TASK NUMBER 1 START TASK DELAYED TASK CHANGE TASK m La La 3 P Please note if you do not use one of the select keys within a short time after the above text appears the Monitor will automatically stop operating in Measure mode the light emitting diode in the key switches off If this happens just press again The active monitoring task number is the number of the monitoring task you wish the Monitor to perform 2 If the number on the display is number 1 then go to step 5 If the number on the display is not number 1 then press S2 to change the task number to number 1 This changes the display text to the following SELECT TASK MONITORING TASK CALIBRATION TASK A lt gt v P N 3 Press Sil This causes the following text to appear on the display MONITORING TASK SET UP NUMBER 1 PRESS ENTER TO CHANGE VALUE P N La P ON The number appearing on the screen will be a number from 1 to 10 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 62 of 280 Chapter 4 BE6011 16 4 Pres
50. external alarm relay connected to it p linear average or mean value of all the water vapour concentrations measured during the whole monitoring task o standard deviation of water vapour s concentrations from the mean value w described above see section 9 1 for further details The humidity unit in this case is Tdew because this is the unit chosen in the active set up see section 4 4 2 W WATER VAPOUR 971 88mBar 2004 01 16 09 51 33 7 49Tdew W WATER VAPOUR 971 88mBar 2004 01 16 09 51 33 7 49Tdew As you can see the measurement cycles are numbered sequentially as soon as the monitoring task has been stopped for example the above measurement was made at 09 51 33 on the 16 of January and it was the second measurement cycle of the monitoring task The concentration of water vapour is given in the units of Tdew because this was the unit chosen for humidity in the active set up 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 70 of 280 Chapter 4 After scrolling through the list of individual measurement results for water vapour the following screen displays appear SAMPLING IS CONTINUOUS MONITORING PERIOD IS NOT PRE SET COMPENSATION FOR WATER VAP INTERFERENCE MONITORING TASK STARTED 2004 01 16 09 50 MEASUREMENT CHAMBER TEMPERATURE 29 6 C SAMPLE INTEGRATION TIME W 5s A 5s B S C A Carbon monoxide B C W WATER VAP D E
51. factors to be downloaded to several banks for the same filter 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 219 of 280 Chapter 14 e The grey boxes these filter banks are not available therefore no calibration factors can be downloaded here When a check box is ticked then a calibration factor will be downloaded to the corresponding filter bank The Select All soft key enables you to tick all the check boxes on the displayed index card This is useful for zero point and humidity interference calibrations where calibration factors are commonly required for all the filters To download the calculated values 1 Pull down the Values menu Click on Download and the Download dialogue is displayed see Fig 14 12 2 Depending on the calibrations performed select the correct index card 3 Set ticks in the preferred check boxes 4 Repeat steps 2 and 3 until all the desired check boxes are ticked Special Function Edit Values Warning This option should only be used by experienced users Editing the calibration values here can result in the monitor providing incorrect results a If you want to edit the calibration values manually click on the Edit Values soft key b When you are sure that the results are correct and the correct values and filters have been selected click on OK This returns you to the Download dialogue 5 When you are sure you have s
52. frequency with which measurements are performed that is the sampling interval Section 9 3 provides information about how you can roughly calculate the length of time the data from a particular monitoring task can be stored in the Display Memory It is important to realise that once the Display Memory has been filled up by the results of a particular monitoring task the results of any further measurements in the same monitoring task will start to overwrite the data already stored in the memory 8 Use the select push buttons to define if you want to compensate for water vapour interference 9 Use the select push buttons to define if you want to cross compensate for interferents 10 Use the select push buttons to select the filters gases you want to measure This step can be repeated up to 5 times if 5 filters are installed 11 Use the select push buttons to define if you want to measure water vapour BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 106 of 280 Chapter 7 12 Use the select push button to define if You want to store the measurement history When step 12 is completed the display returns to the top of the branch SELECT MEASUREMENT SET UP BRANCH MONITORING TASK ENVIRONMENT BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 107 of 280 Chapter 7 Environment branch
53. gas s concentration and the signal it produces in the cell see Fig 14 19 Fig 14 20a and Fig 14 20b However we can give you some guidelines on whether you have to perform a single or a two point span calibration e Single point calibration should be used when you wish to measure in the linear range We define the linear range as the dynamic concentration range in which you can measure with an error of 5 of the real concentration this is illustrated in Fig 14 20b For the most common gases the linear range is from its detection limit and up to 10 OOO times its detection limit e Two point calibration is recommended to be used when you wish to measure in the non linear range and when you wish to measure over a dynamic range of 100 OOO Gas Concentrations Single point Calibration If a single point span calibration is performed then the span gas should have a concentration which is at least 100 times its detection limit and preferable not more than the highest concentration you expect to measure For certain gases it can be inexpedient to use a concentration of at least 100 times its detection limit e g if you wish to measure a poisonous gas with a high detection limit it would be natural to use a lower concentration However this means that the noise and vibration will have a larger influence on the calibration This must therefore be taken into account when considering using a lower concentration Gas Concentrations Two
54. gt to move the cursor across the fields Change the length of the sampling tube shown on the screen to the length of the tube you attached to the Monitor in section 4 2 Note the range of acceptable values for the sampling tube ranges from 00 00m to 99 00m d Press to select displayed length The following display appears NORMALIZATION TEMPERATURE 20 0 C PRESS ENTER TO CHANGE VALUE BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 57 of 280 Chapter 4 The Monitor measures gas concentrations in the absolute unit of mg m a unit which is dependent on temperature Alternatively the Monitor can calculate gas concentrations in parts per million ppm by volume this unit is independent of the temperature of the gas If mg m is chosen as the gas concentration unit it is therefore necessary to define the temperature at which you wish the Monitor to calculate gas concentrations This pre defined temperature is termed the NORMALIZATION TEMPERATURE e Press to change value f Use the direction keys to define the normalization temperature A and W to increase and decrease the numbers respectively lt and gt to move the cursor across the fields g Press to select displayed temperature The display screen then jumps to the head of the MEASUREMENT branch of the Set Up Tree and the following text is shown SELECT MEASUREMENT SET UP BRAN
55. interference calibration it is not necessary to know the concentration of water vapour supplied to the cell as it is only necessary to measure the size of each signal with filters A E relative to the size of the signal measured with the water vapour filter However during a span calibration of the water vapour filter it is necessary to know the exact concentration of water vapour supplied to the cell because during this calibration the conversion factor is calculated This factor relates the measured signal to the concentration of water vapour in the cell Follow the procedure described in section 14 9 2 Setting up a Combined dZero point and Humidity interference Calibration Stand alone Use We have explained in previous sections of this chapter section 14 7 and section 14 9 1 that a zero point calibration can only be performed alone if a humidity gain factor is already stored in each of the filter banks which are active during the zero point calibration task Likewise a humidity interference calibration can only be performed alone if a concentration offset factor is already stored in each of the filter banks which is active during the humidity interference calibration task If the necessary calibration factors are not stored in the Monitor s memory a zero point calibration task has to be performed together with a humidity interference calibration task 1314 Photoacoustic Multi gas Monitor LumaSense Technolog
56. is described in detail in section 4 2 a Connect the free end of the length of tubing attached to the air inlet to one of the branches of the Y piece see attachment point no 1 in Fig 14 5 b Cut off another 1m length of teflon tubing and connect one of its ends to attachment point no 2 of the Y piece see Fig 14 5 and its other end to a flow meter 3 Connect a 1m length of tubing to attachment point no 3 of the Y piece see Fig 14 5 14 4 1 Producing a Supply of Clean Wet Air BE6011 16 When humidity interference calibrations are performed clean wet air is required This can be produced in the following manner We suggest that you bubble zero gas e g pure nitrogen through a thermostatically controlled water bath to produce a supply of clean wet air to the Monitor during humidity interference calibration of the filters see Fig 14 7 Notice that the thermostatically controlled 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 211 of 280 Chapter 14 water bath is linked up to an extra empty flask This is to prevent a situation where the level of water in the controlled water bath rises and covers the outlet tube A and draws water via the Y piece directly into the Monitor s analysis cell Water will seriously damage the cell To avoid such a situation we suggest that the wet air from the water bath outlet tube is fed into
57. new monitoring task you can choose freely between the gases available for each filter names entered when calibrating the filters see sections 14 3 and 14 5 Once a gas has been selected for a filter and the measurement task started you can no longer change the gas for this filter in this measurement task However you can still select gases for filters which have not previously been used in the measurement task Note only one gas per filter can be selected at a time for measuring The W position always represents the water filter installed in the monitor Sample Integration Time this enables you to make a choice between speed and accuracy Generally the longer the integration time the more accurate the results There are several selection possibilities here Integration Type Integration Time Fast 1s Normal 5s Low Noise 20s Advanced 0 5s 1s 2s 5s 10s 20s 50s Alarm index card Select Gas this option enables you to select any of the gases one per filter position already defined in the set up BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 101 of 280 Chapter 7 Limit enables you to define the gas concentration that will trigger the alarms The acceptable values are shown in Table 7 7 Select limits this defines the concentration level when the alarm is triggered This parameter must be defined Table 7 7 The range of acceptable values and defaul
58. option or the Time option Like the Time option by defining a value here you define the length of the column defined as a number of measurements For the Online option the X axis works like a rolling window where the latest measurement is always displayed at the bottom of the column For the presentation option several measurement sequences under the same monitoring task name can be displayed at the same time Rolling Average this enables you to define what sample values are displayed If the check box in this field is not ticked default setting then individual sample values are displayed However if the check box is ticked an averaging interval must be entered Rolling Average the individual sample values are averaged and displayed in the columns By defining the averaging time you can display defined Time weighted Average TWA values This can be of use if you need to know 8 hour National Occupational Exposure Limits or Short Term Exposure Limits STEL averaged over 15 minutes The formulae used to calculate the average values are described in detail in section 8 4 2 The units of the value defined 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 125 of 280 Chapter 8 Columns BE6011 16 here change depending on which radio button was selected time or measurement number index card It is here you define which component s parameters are displayed in the num
59. paper DS 0759 Tweezers QA 0164 Cotton buds Clean rubber gloves To change the filter paper Switch the power to the monitor Off by using the AC mains power switch on its back panel press O and then pull out the plug connecting the monitor to the AC mains power supply Put a rubber glove on the hand which is to hold the parts of the unit Unscrew the internal air filtration unit from its mounting on the air inlet see Fig 13 1 To do this turn the unit anti clockwise with your fingers until the unit is free of the slot The unit is removed from the monitor It is shown in Fig 13 2 Use the tweezers to lift off the retaining disc and used filter paper while holding the handle of the unit between your thumb and fingers Refer to Fig 13 4 The retaining disc has two tabs which lock it to the filtration unit Fig 13 4 Removing the retaining disc and old filter paper Holding the disc with the tweezers moisten a cotton bud with pure acetone and use it to clean the surfaces of the disc Place the disc on a clean dry surface BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 190 of 280 Chapter 13 BE6011 16 Caution Make sure that no cotton fibres remain on the mesh of the retaining disc otherwise they could be sucked up into and block the measurement system when the Monitor is operated Hold the handle end of the unit between your thumb and fing
60. set up will destroy all calibration data for the filter As explained in section 11 1 1 the UA No determines the set of Optical Filter Factors used during the calculation of calibration factors and therefore if the UA number of any filter is changed in the active set up of the Monitor all calibration data related to the optical filter whose number has been removed from the set up is automatically deleted from both the Source Memory and the Working Memory as it is no longer valid Fig 11 3 Effect of changing a UA number in the active set up Source Memory 1 Calibration Factors 2 Optical filter 3 Other Set Up Parameters Set Up Parameters New active values factory set values All Calibration Change UA no factors deleted of Filter in in A files position A 1 Calibrdtion Factors from Active Filter Banks 2 Optical filter 3 Other Set Up Parameters Set Up Parameters A B C D E New active values active values 4 Background Memory 5 Display Memory data copied from storage of Display Memory measurement results Working Memory For example if the UA number of the filter installed in position A of the filter carousel is changed in the active set up then calibration factors are deleted from the active file A in the Working Memory and from files A 1 A 2 A 3 A 4 and A 5 in the Source Memory of the monitor see Fig 11 3 The Monitor will not be able to measure any gas with filter A until
61. the 4 other gases and water vapour see Fig 4 9 and section 4 4 8 L Depending on the situation this push button acts as either an Enter or Go To Top of Measurements function 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 76 of 280 Chapter 5 5 2 2 5 2 3 BE6011 16 The Enter function is used whenever measurement units are selected or any text for example filter names or gas names are being entered The Monitor display will typically display a text similar to PRESS ENTER TO CHANGE VALUE The Go To Top of Measurements function is used in the following situations e If you are viewing measurement data when is pressed the display will move to the screen showing the text DATA IN DISPLAY MEMORY RECORDED FROM which gives the period of time data was recorded see Fig 4 9 for details e If the Monitor is performing measurements when iS pressed the Monitor will display the last measured concentrations of all the gases The Select Push buttons Located below the text display screen these three push buttons allow you to select from the pre defined options appearing on the display screen The following example illustrates the use of the select push buttons If the text on the screen appeared as follows SELECT CONCENTRATION UNIT mg m a By pressing S1 the gas concentrations which appear in the measurement results will be quoted
62. the other gas concentration If you have not already set the S I T values click on the Gas index card and go to step 13 If you have set all the parameters on the 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 243 of 280 Chapter 14 Gas index card return to the basic set up instructions section 14 5 1 and continue from step 11 Gas index card 10 Click on the Gas index card 11 If you want to recalibrate using gas names already stored in the monitor s filter banks click in the Gas Name fields and select the desired gas names Repeat this for all the loaded filter positions If you want to calibrate with a new gas select the correct filter pull down the Gas Name field to show all the filter banks Click in the desired filter bank position and type in the gas name Type in the correct molecular weight in the field next to the gas name 12 Repeat step 11 until you have the correct gas names and molecular weights displayed for all the filters 13 Click in the Sample Integration Time field and select the correct time Note if you select Advanced then you need to define the S I T for the individual filter positions including the water filter These values should be the same as those used when monitoring If you are still setting up the calibration click on the Calibration index card and go to step 3 If you have already completed the
63. to 5 This enables each filter to be calibrated to measure up to 5 different gases Before the filter is calibrated to measure any one particular gas you have to inform the Monitor about where you wish to store the calibration data for this gas The number of the filter bank chosen when operating in Set Up mode is called the active filter bank see Chapter 11 When checking the optical filters using the front panel push buttons Chapter 12 provides details of how to obtain a print out of calibration data using a printer with an RS 232 interface or an IEEE 488 interface Note that calibration data in the active filter bank is always printed out directly after the optical filter factors data and this data is also shown under the heading CALIBRATION DATA IN FILTER BANK X where X is the number of the filter bank Note all calibration factors are expressed as exponential numbers For example 104 05E 3 this is the same as the number 104 05 x 10 3 0 10405 1 Refer to your calibration data print out and check the following information a Under the heading GENERAL CALIBRATION INFORMATION FOR FILTER A check that the UA number of the installed optical filter is the same as the UA number appearing on the Calibration Chart for the optical filter in position A Under the headings CALIBRATION DATA IN FILTER BANK 1 CALIBRATION DATA IN FILTER BANK 2 CALIBRATION DATA IN FILTER BANK 3 CALIBRATION DATA IN FILTER BANK 4 and CALIB
64. units at 25 C The acceptable values and the default values of the normalization temperature are given in Table 7 2 in the different temperature units Table 7 2 The acceptable values and the default values of the normalization temperature Display Text Acceptable Values Default Value TEMPERATURE 77 F TEMPERATURE 298K If you set up the monitor using the front panel push buttons the instructions to set the normalization temperature are included in the section 7 2 1 7 1 1 Online Unit Set up With the Online program running follow the instructions below 1 Pull down the Task menu Click on Units and the unit dialogue appears see Fig 7 1 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 95 of 280 Chapter 7 D Fig 7 1 The Units dialogue Onine eee 18 x Task View About Dis a El olla Cit i ala el ela 2 Click on the radio push buttons to select the desired units If you have selected the mg m unit for the gas concentration click in the Normalization Temperature field Note these temperature values change depending on the temperature units selected i e C F and K Select the desired value and click on OK All the parameters units are now set 7 1 2 Offline Unit Set up BE6011 16 With the Offline program running 1 Note Click on the Units softkey at the bottom of the dialogue box The Units dialogu
65. value or text D Press Mi 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 91 of 280 Chapter 6 If the parameter you desire is already selected i e a cursor is displayed under it then using W enables you to move directly to the next display These procedures are common for all the parameters in the Monitor BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 92 of 280 Chapter 7 Chapter 7 Setting up and Starting a Monitoring Task July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 93 of 280 Chapter 7 Before a measurement task can commence there are a variety of parameters that must be defined first This is called Setting up the Monitor This chapter instructs you on how to set up the monitoring system before starting to measure As mentioned previously in this manual the parameters can be defined using the PC Use instructions i e when using a PC or the stand alone Use instructions i e when using the front panel push keys on the monitor Before leaving the factory each of the parameters found in the set up tree see the Quick Set up Guide are given factory values default values When setting up the Monitor as a stand alone instrument those values with a cursor underneath them are the active v
66. want to create a new database or click on Open to use an existing database BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 102 of 280 Chapter 7 In the database window For new databases click in Enter name for field and type in the desired name For existing databases click on the desired database name Click OK A graphic window and an extended menu bar appear Pull down the Sequence menu Click on Settings and the Setup window appears In the new window there are several labelled index card separators Each index card contains several parameters Sampling index card Gas index BE6011 16 oe 9 10 11 12 13 Click on the radio button for the desired sampling mode If Sample Interval is selected set the time to the correct value Click on the radio button for the desired flushing mode a If Auto is selected set the correct tube length b If Fixed Time is selected set the desired chamber flushing time and the tube flushing time If water vapour and cross interference are required click in the appropriate check boxes If average values are to be displayed on the gas monitors screen click in the Average check box and set the interval to correct value card Click on the Gas index card Click in the check box to the left of the desired filter Click in the field to the right of the selected filter and selec
67. with this symbol when it is important that the user refers to the associated warning statement given in the User Guide Frame or ab Chassis h Protective earth Dangerous voltage Copyright 2004 LumaSense Technologies A S All rights reserved No part of this publication may be reproduced or distributed in any form or by any means without prior consent in writing from LumaSense Technologies A S Denmark 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 7 of 280 Chapter 1 Chapter 1 Using this Manual July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 8 of 280 Chapter 1 1 1 Introduction This manual can be used in several ways The first time users can work their way through the examples in order to get to know this monitoring system The more experienced users can jump directly to the relevant chapters in order to gain assistance and experts can use this manual as a reference book by using the index The monitor can be operated in three ways Online Offline and as a Stand alone instrument Therefore the instructions in this manual are divided in to the following sections PC use and Stand alone Use When Offline operation is required the normal Online instructions Should be followed If there is a deviation from these instructions this will be indicated in the relevant sections 1 2 P
68. you want to display is not present in the All Columns field click on Add New or Insert Before 7 In the Single Column Setup group click in the Select Parameter field and select the desired parameter 8 Click in the Select unit field and select the desired units 9 Repeat steps 6 to 8 selecting the other parameters you want to display 10 Press OK to save selections and exit the dialogue box The selected parameters will now be displayed in the numeric window as they become available Left Y axis index card 11 Click on the Left Y axis index card 12 In the Scaling group select the desired scaling mode by clicking on the correct radio button 13 If the parameters and their units displayed in the All Curves field are not correct click on the parameter you want to change If the component you want to display is not present in the All Curves field click on Add New or Insert Before 14 In The Single Curve Setup click in the Select parameter field and select the desired parameter 15 Select the desired colour style and units 16 Repeat steps 13 to 15 until all the component s parameters you want displayed on the left Y axis are in the All Curves list BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 136 of 280 Chapter 8 Right Y axis index card 17 Click on the Right Y axis index card 18 In the Scaling group select the desired scalin
69. 1 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 118 of 280 Chapter 8 BE6011 16 Fig 8 1 The Up Download dialogue pan Offline Sequence Settings Sampling Gas Alarms UpDownload Upload Sequence trom Gas Monitor Upload to new task i Upload to existing task 1 gas Qat Upload Sequence Download Settings Units Default 2 Click on the radio button to either Upload to a new task or Upload to an existing task If you are adding data to an Existing Task select the monitoring task from the list displayed oe Click on the Upload Sequence soft key If you are uploading measurement to a New Task a New measurement Task dialogue opens type in the desired monitoring task name now and click on OK The measurement data is uploaded to the PC where it can be viewed using the Presentation program If the upload sequence soft key is activated when no data is stored in the Monitor s display memory the following warning will be displayed Fig 8 2 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 119 of 280 Chapter 8 Fig 8 2 Offline warning message SS x AN Warning Wo measurement available in instrument For upload 8 2 Graphic Window 8 2 1 This window can display all the measured gases and atmospheric pressure simultaneously The concentration curves can b
70. 13 Press S3 to enter the Environment branch 14 Use the select push buttons to select the desired flushing mode If you select Auto go to step 17 If you select Fixed Time go to step 15 15 Use the direction push buttons to define the Chamber Flushing Time 16 Use the select push buttons to select Tube Flushing If you don t want tube flushing select NO and go to step 18 If you select tube flushing use the direction push buttons to define the flushing time and go to step 18 17 Use the direction push buttons to select the desired sample tube length and move on to the next display 18 Use the direction push buttons to select the desired normalization temperature See section 7 1 for details about the normalization options When step 18 is completed the display returns to the top of the MEASUREMENT branch Press A to go to the top of the Set up Tree If you want measurement data presented as averaged concentration values then go to step 20 If you want your measurement data presented as sample concentration values then press to exit the set up function Format branch BE6011 16 If you are starting here press SET UP 19 Press 52 to enter the FORMAT branch 20 Use the direction push buttons to enter the correct averaging period 21 Use the select push buttons to choose if you want to print each gas If you select Yes go to step 22 If you select No go to step 23 1314 Photoacoustic Multi gas Monit
71. 19 34 uV o 212 nV 6 39 3 C PRESS ENTER WHEN RESULTS ARE STABLE These results have been printed out on the data log printer If they have stabilised continue to the next Step 5 Repeat step 4 until the signals measured with all the filters have been displayed stabilised and been accepted The text CALCULATING PLEASE WAIT appears on the screen The Monitor only uses the last six measurement results when calculating any calibration factor The humidity gain factors calculated during humidity interference calibration of the filters are a measure of the sensitivity of each filter to water vapour in terference If any calibration data is uncertain or unacceptable an error message marked by an asterisk will appear on the screen after the calibration factors have been calculated Whenever an asterisk is Shown on the screen further information about the condition of the Monitor can be obtained by pressing INFO Chapter 16 lists all the error messages connected with uncertain calibration results and gives an explanation of their significance so that you can ascertain what action to take if such messages are displayed after calibration Cross interference Calibrations If any gas measured by the installed optical filters absorbs light from more than one of the installed optical filters then it is advisable to calibrate for cross interference see section 14 1 Cross interference calibration cannot be performed alone It has to
72. 3 and section 14 4 have been completed Although there are four types of calibration many of the procedures for these calibrations are similar These similarities are described here Things that are particular to the individual calibrations are described in more detail in the relevant sections The basic calibration can be divided in to 3 stages e Measuring Raw Data e Calculating Calibration Values e Downloading the Calibration Values to the Filter Banks 14 5 1 Measuring Raw Data With the Calibration program already running and the correct tubing attached Fig 14 8 Calibration Sequence Settings dialogue Task Sequence Values Bank Edit View Window About Da S Sf A eles Em fr ye aa ea E 2 A Carbon monoxide p T Temperature C B TVOC ref Methane uY W Water Vapour uv Calibration Sequence Settings Sequence 1 Calibration Gas Sampling Humidity Calibration Gas Span Calibration O NMN 1 Pull down the Task menu and click on New If you want to use an existing task then click on Open The Calibration Task dialogue is displayed BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 213 of 280 Chapter 14 2 Type in the desired task name or highlight the desired name if opening an existing task and click on OK A graphic window and an extended menu bar now appear 3 Pull down the Task menu again and click on
73. 4 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 73 of 280 Chapter 5 Chapter 5 The Monitor July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 74 of 280 Chapter 5 5 1 Introduction This chapter is primarily for those users who want to use the monitor as a stand alone instrument But the start up and alarm relay sections are also of interest for the PC user 5 2 Front Panel The front panel of the monitor is dominated by a 2 x 40 character fluorescent display screen 3 Select push buttons located beneath it and 5 direction push buttons see Fig 5 1 The rest of the push buttons situated in a line along the bottom are function push buttons Fig 5 2 The front panel of the 1412 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 75 of 280 Chapter 5 5 2 1 BE6011 16 Small light emitting diodes LEDs are mounted above some of the front panel push buttons Their function is to inform you of the operating state of the monitor For example if the LED above the push button is lit it indicates that the Monitor is either busy performing measurements or has been set up to start measurements at a pre defined time Direction Push buttons This group of 5 push buttons is referred to in this manual as the direction push button
74. 412 Photoacoustic Field Gas Monitor Page 181 of 280 Chapter 12 BE6011 16 SELECT NUMBER OF DATA BITS gives the number of data bits which should be used when data is transmitted between the Monitor and other equipment SELECT PARITY CHECK The user chooses whether or not transmitted data should be checked for transmission errors using the parity checking system SELECT HARDWIRE MODE The user chooses which communication line wire should be used to control data transmission between the Monitor and other equipment SELECT HANDSHAKE TYPE The user chooses which type of handshake should be used for transmission via the RS 232 interface Table 12 1 The available choices and the default values for each RS 232 communication parameter Values Value SELECT BAUD RATE 300 600 1200 9600 2400 4800 960 0 SELECT NUMBER OF STOP BITS 1 BIT 2 BITS 1 BIT SELECT NUMBER OF DATA BITS 7 BITS 8 BITS 7 BITS ODD SELECT HARDWIRE MODE Three wire Leased line Leased line X ON X OFF Hard wired REMEMBER to partially reset your Monitor if any of the above parameters are changed See the WARNING at the beginning of section 12 3 From the top of the Communication branch of the Setup Tree SELECT COMMUNICATION SET UP BRANCH RS 232 IEEE 488 CONNECTIONS 1 Press S1 2 Use the direction and select push buttons to select the correct values for the parameters 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Phot
75. 7 42E 00 o 2 36E 00 While a monitoring task is being performed a running statistical analysis of the monitored gases vapours is made and the results are displayed as shown above where MAX maximum concentration of gas A measured during the period of time the monitoring task has been performed MIN minimum concentration of gas A measured during the period of time the monitoring task has been performed ALARM 1 the user defined concentration of gas A which if measured by the Monitor will trigger a switch in the Monitor and activate an external alarm relay connected to it p linear average or mean value of all the gas A concentrations measured during the period of time the monitoring task has been performed o standard deviation of gas A s concentrations from the mean value yw described above see section 9 1 for further details All numbers are written in the exponential form for example 84 5E 00 84 5 x 10 84 5 The concentration unit in this case is mg m3 as this was chosen in the active set up see section 4 4 2 3 Press V A the name of the gas being measure by Filter A will appear here 972 06 mBar 2004 01 16 09 50 32 7 42 mg m3 A the name of the gas being measure by Filter A will appear here 972 06 mBar 2004 01 16 09 51 33 7 42 mg m3 As you can see the display provides the date and time at which the measurement was made and the concentration of gas A is given in the units mg m
76. A0988 Sulphurhexaflouride After calibration the calibration data is stored in a calibration task and the data is copied to a CD The calibration task is named as Serial No CAL ex 710 002 CAL Please insert your backup CD in the CD ROM drive Start the Database Administration program 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 29 of 280 Chapter 2 i Database Administration Backup atask or filter Info Restore a task or filter info Delete an existing task Backup filter info Full backup and alltasks Close Select Restore and select the respective CD ROM drive select backupftile Look in 29 CD Drive D File name SYSTEM S B Files of type Backup files mea cal syb Cancel Open az read only Please store all files from the CD The System syb contains the calibration task data and the x CAL file contains the filter calibration data Please store the System syb file first and thereafter the x CAL file BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 30 of 280 Chapter 2 BE6011 16 After storing the calibration data you will find the calibration task in the Calibration program Open Calibration Task x Select task r 10 038 Gas Monitor Serial 710 038 Cancel Under the Bank and Download Banks to the Gas Monitor menu bot
77. C Use The instruction under this heading should be followed whenever the monitor is used together with the Gas Monitoring Software 7304 Both Online and Offline instructions are covered here The information displayed on screen is presented in this manual as shown below Task view About New a nie tjr afal ajal al Fjal 1 Menu bar option e g Edit Open Communication Units 2 Pull down menu option e g Open Font Print Setup Sequence Settings Sequence 1 3 3 Ind ex ca rd e g u Gas Exit Sampling Gas Alarms Gas Setup 4 Group e g Gas Setup Select gas V amp Carbon monoxide 5 Select Field e g Select S I T E B TVOC ref Methane 6 Check box used to select several options M eater Vapour 7 Soft key e g Reload Filter info Sample Integration Time 5 1 T Advanced Y Reload Filter Infq Cancel Default BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 9 of 280 Chapter 1 Radio push buttons these are not illustrated above but are commonly used in the software They act as a toggle function when several options are available but only one can be selected at a time 1 3 Stand alone Use BE6011 16 In some situations it may be necessary to set up without connecting it to a PC The procedure to do this are covered in this manual under the Stand alone use headings The way these inst
78. CH MONITORING TASK ENVIRONMENT Fixed Time Option BE6011 16 a Press 53 and the screen displays the following text CHAMBER FLUSHING TIME 8s PRESS ENTER TO CHANGE VALUE b Press Mi c Use the direction keys to define the chamber flushing time Note the range of acceptable values for chamber flushing ranges from 2s to 60s increasing in 1s intervals d Press J to select displayed flushing time and the following text is displayed TUBE FLUSHING 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 58 of 280 Chapter 4 4 4 4 BE6011 16 e Press 53 to enable sample tube flushing The screen displays the following text TUBE FLUSHING TIME 3s PRESS ENTER TO CHANGE VALUE f Press L g Use the direction keys to define the tube flushing time Note the range of acceptable values for tube flushing ranges from 3s to 120s increasing in 1s steps h Press d to select displayed flushing time The following text is displayed NORMALIZATION TEMPERATURE 20 0 C PRESS ENTER TO CHANGE VALUE i Press SET UP Setting up a Monitoring Task The optical filters in the monitor have to be calibrated before they can be used to measure gas concentrations The user can only set up a monitoring task using those optical filters which have been installed In this example we have chosen to measure gas A that is to measure gas A s concentration usin
79. Calibration index card return to the basic set up instructions section 14 5 1 and continue from step 11 Note you need to span calibrate each filter individually Therefore these instructions need to be repeated to collect raw measurement data for each gas you want to span calibrate BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 244 of 280 Chapter 14 14 11 2 Setting up a Span Calibration Stand alone Use Fig l14 22 Schematic diagram showing how to set up a span calibration task follow the arrows PERFORM ZERO POINT CALIBRATION NO YES using dry zero gas PERFORM HUM INTERFERENCE CALIBRATION NO YES using wet zero gas If only ONE filter A B C D E is installed in the carousel this display does not appear in the calibration set up PERFORM CROSS INTERFERENCE CALIBRATION NO YES using span gases of known concentration PERFORM GAS SPAN CALIBRATION NO YES using span gas of known concentration GAS CONC PRESS ENTER TO CHANGE VALUE CALIBRATE WATER VAPOUR FILTER NO YES End of the set up section of the calibration task PERFORM PRACTICAL CALIBRATION TASK NO YES BE6011 16 EITHER 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor CALIBRATE A WITH gas name appears here NO SINGLE POINT TWO POINT HIGH GAS CONC PRESS ENTER TO CHANGE VALUE This d
80. Cancel Open az read only Please store all files from the CD The System syb contains the calibration task data and the x CAL file contains the filter calibration data Enter task description ui Cancel Please store the System sypb file first and thereafter the x CAL file Enter a task description And select back up file After storing the calibration data you will find the calibration task in the Calibration program Open Calibration Task x Select task r 10 038 Cancel baz Monitor Senal 710 038 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 28 of 280 Chapter 2 Example 2 BE6011 16 Under the Bank and Download Banks to the Gas Monitor menu bottoms you will find the calibration data Task Sequence Values Bank Edit View Window About Dies wf FY l Elm oe i shal eal E 2 A Carbon monoxide pV B TVOC ref Methane pY W Water Vapour pY Your Gas Monitoring Software 7304 is now loaded with the calibration data and is now ready for use Storing of calibration data from a multi calibration task including different filters In this example we assume that you have ordered two different calibrations of your Dual gas Monitor Calibration task no 1 Filter A UA0984 Carbon monoxide Filter B UA0987 TVOC ref methane Calibration task no 2 Filter A UA0983 Carbon dioxide Filter B U
81. E 1 and W will be found in the Monitor s Working Memory after a FULL RESET This example is illustrated in Fig 11 4 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 172 of 280 Chapter 11 Fig 11 4 The state of the Working Memory after a FULL RESET Source Memory 1 Calibration Factors 2 Optical filter 3 Other Set Up Parameters Set Up Parameters factory set values A B C D E FULL RESET 1 Calibration Factors from Active Filter Banks 2 Optical filter 3 Other Set Up Parameters Set Up Parameters factory set values i s B C 4 Background Memory Working Memory 5 Display Memory TEN EC a 11 2 Storage of Measurement Results While a monitoring task is being performed measurement data is stored in the Monitor s Display Memory When the monitoring task is complete the data in Display Memory is normally copied into the Monitor s Background Memory to prevent it from being overwritten and therefore lost by measurement data stored during the next monitoring task The same amount of data can be stored in both the Background Memory and the Display Memory Structure of the Background Memory The data from a maximum of 10 monitoring tasks can be stored in the Background Memory provided the total amount of data from the 10 tasks does not exceed the total capacity of the Background Memory Each monitoring task stored in the Background Memory is given
82. ED TIME 10 14 LOCATIONS S USED 50 OF MEMORY USED TIME 12 16 LOCATIONS S USED 1 2 3 90 OF MEMORY USED TIME 16 18 LOCATIONS S USED 1 2 3 4 100 OF MEMORY USED TIME 08 20 Whenever the Monitor is operating in Memory mode the user can by pressing the push button find out what percentage of the Background Memory is occupied and which location numbers have been used to store data Fig 11 5 illustrates the status information one can obtain from the Monitor during various stages of the four monitoring tasks described above Further information about the push button can be found in section 11 3 4 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 175 of 280 Chapter 11 11 3 Management of Data in Background Memory The monitor has to be operated in Memory mode by pressing the MEMORY push button The following text appears on the screen SELECT MEMORY FUNCTION RECALL DELETE 11 3 1 Storing Data in Background Memory When data is to be copied from Display Memory into Background Memory Press S1 LOCATION NUMBER 1 PRESS ENTER TO CHANGE VALUE If some data has already been stored in the Background Memory and you cannot remember which locations have been occupied used press the push button to find out which locations are occupied and what percentage of the Background Memory has been used see section 11 3 4 Use the direction keys to sele
83. ERFERENCE FACTOR lt 0 During the zero point calibration task the signal is measured when dry zero gas is in the cell this is a measure of the noise in the cell when a particular optical filter is used This measurement allows the concentration offset factor for the particular filter to be calculated During the humidity interference calibration task the signal in the cell when a particular optical filter is used is measured when wet zero gas is in the cell this signal is compared with the signal measured with the water vapour filter to give the humidity gain factor The above message is given if the humidity gain factor is found to be less than zero This could indicate that the zero gas you used during the zero point calibration was not dry or alternatively that the concentration of water vapour you used during the humidity interference calibration was too low GAS X CALIBRATION FACTOR LESS THAN O This message is associated with a single point span calibration task The gas conversion factor calculated during the single point span calibration task is found to be less than zero This could indicate that the concentration of gas used during the calibration was too low GAS X LOW MEAS gt HIGH MEAS GAS X MEAS INDICATES LINEAR COHERENCE GAS X MEAS DOES NOT FIT NON LINEAR CURVE GAS X CALIBRATION IMPOSSIBLE MAX ITER All these messages are associated with a two point span calibration task During a two point span calibratio
84. Field Gas Monitor Page 34 of 280 Chapter 3 PC The monitor is ready for use as a stand alone instrument While monitoring the monitor stores all the measurement results in its internal memory On completion of the monitoring task the PC and the monitor can then be connected again and the results uploaded to the PC These results can then be displayed on the PC screen analysed and if necessary are available to other software programs When Offline operation is required the On line instructions in this manual should be followed If there is a deviation from these instructions this will be indicated in the relevant sections 3 3 Stand alone Use BE6011 16 This method of operation is available to those of you who wish to use the monitor without connection it to a PC The monitor is set up and the results are displayed via the monitor s front panel The structure of the monitor set up can be viewed like an inverted tree The main branches divide and separate into minor branches These in turn divide again and again To move through the tree the branches are selected using the select push buttons see section 1 3 Use the Set up Tree supplied with the monitor and the example steps below to see how the instructions progress Starting from the initial screen display CURRENT TIME IS 2004 06 13 17 12 MONITOR IS READY FOR USE 1 Press SET UP and the text changes to that displayed below SELECT SET UP BRANCH MEA
85. LIBRATION NO YES using span gases of known concentration PERFORM GAS SPAN CALIBRATION NO YES CALIBRATE A WITH gas name appears here NO SINGLE POINT TWO POINT using span gas of known concentration GAS CONC PRESS ENTER TO CHANGE VALUE HIGH GAS CONC PRESS ENTER TO CHANGE VALUE This display ONLY appears if you have selected to perform zero point calibration of filters installed in positions A to E CALIBRATE WATER VAPOUR FILTER NO YES PERFORM WATER VAPOUR ZERO POINT CALIB NO YES PERFORM WATER VAPOUR SPAN CALIBRATION NO YES WATER VAPOUR CONC PRESS ENTER TO CHANGE VALUE End of the set up section of the calibration task using zero gas containing an accurately known concentration of water vapour PERFORM PRACTICAL CALIBRATION TASK NO YES 900168 Te BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 252 of 280 Chapter 14 14 12 2 Performing a Zero point Calibration of the Water vapour Filter As explained in the previous section a zero point calibration of the water vapour filter has to be done together with the zero point calibration of the other installed optical filters The latter task has been fully described in section 14 7 It is worth while to emphasise again that it is vitally tmportant to use perfectly dry zero gas that is zero gas which contains 0 water vapour during this calibration
86. LUMASENSE TECHNOLOGIES Instruction Manual 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor BE6011 16 Index Index Na E a E E E E E E E E A E A T TTT 2 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor ccccceseeeeeeeeeenees 4 Sarety CONSIGSlaLOMNS rria a aE A eae tate EA A AO 5 ADPVINO FOWO siirierrin teire aaa aa 7 Chapter t Using ChiseM a NU al ri ereraa o A E A A ad ee EA 8 li INTFOd CUON micara a a a A a a eee a a 9 EZ PC USGrouoinen epee E A a 9 Lo Stand alone USE ierra a a A a AAO ONAA 10 1 4 Tool bar Icons in Gas Monitoring Software 7304 s ssssssesssssrsrsrrnrsrsrrnrrrrrrnrerenrereree 11 Chapter 2 Preliminary TASKS arera O EEA T 13 2 1 Installing the Gas Monitoring Software 7304 ssssssssssssssssnssnsnnnennrnenrrnrnrenrrenrrnrrene 14 2 connecting The Monitor to TNE PC reiiiae kene i a EEAS 15 2 3 Checking changing the Fuses in the Monitor ssssssesssssnsssnnnnnnrnennrnenrrnrrrenrrenrrnrrrne 15 2 4 Setting the Communication Parameters ssssssarsrisaneressinnsnnnasnasossonensennnnunnnaneressenenina 21 2 5 Stn UP USE LEVEI arrieta a N a A a N A A OEA 23 2 6 Upgrading to newer versions of Gas Monitoring Software 7304 s s s sssssssssssrrrsrrerrrrrsene 26 Chapter 3 PAIOSODNY Of OperatiOisrtirei eraino EAA A A E a ead aaa 33 Ire PC WSS OINO ei aa A N A A AAN 34 I2 PEVSE OMC diraa oira aAA T T Aa aN 34 3 3 SHANG alOM
87. Monitor 1412 Photoacoustic Field Gas Monitor July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 4 of 280 Safety Considerations Safety Considerations Through out this manual Monitor is used for Photoacoustic Multi gas Monitor INNOVA 1314 Photoacoustic Field Gas Monitor INNOVA 1412 BE6011 16 The Monitor complies with e EN IEC 61010 1 2 2001 Safety requirements for electrical equipment for measurement control and laboratory use e Can CSA C22 2 No 1010 1 92 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements e UL Std No 61010A 1 1 Edition Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements To ensure safe operation and retain the Monitor in safe condition note the following EXPLOSION HAZARD TO AVOID THE POSSIBILITY OF AN EXPLOSION MONITORING OF FLAMMABLE GASES IN EXPLOSIVE CONCENTRATIONS MUST NEVER BE ATTEMPTED Never operate the 1314 Photoacoustic Multi Gas Monitor or the 1412 Photoacoustic Field Gas Monitor in potentially explosive environments When monitoring potentially flammable or toxic gases it is essential that e The instrument itself is placed in a well ventilated area outside the potentially hazardous zone e A sufficiently long tube is connected to the air
88. NG PLEASE WAIT appears on the screen If any calibration data is uncertain or unacceptable an error message marked by an asterisk will appear on the screen after the calibration factors have been calculated Whenever an asterisk is 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 258 of 280 Chapter 14 shown on the screen further information about the condition of the Monitor can be obtained by pressing Chapter 16 lists all the error messages connected with uncertain calibration results and gives an explanation of their significance so that the user can ascertain what action to take if such messages are displayed after calibration BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 259 of 280 Chapter 15 Chapter 15 Installing the Optical Filters July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 260 of 280 Chapter 15 15 1 BE6011 16 Introduction Each of the optical filters available for use with the Monitor have a UA number printed on them The UA numbers run from UA 0968 UA 0989 and UA 0936 The Monitor has a carousel wheel on which relevant optical filters are mounted There are six mounting holes in the carousel Each mounting hole is labelled with one of the following letters A B C
89. O 2004 06 10 09 18 ae WATER VAPOUR MEASURED Statistical analysis of WATER MAX 12 0E 00 u 8 15E 00 measurement results for ALARM MIN 11 7E 00 co 79 5E 03 each individual gas B List of measurement results for each individual gas W WATER VAPOUR 1013 0mBar 2004 06 10 08 57 35 1 11 9Tdew W WATER VAPOUR 1013 0mBar 2004 06 10 08 58 11 2 11 9Tdew GB Overview of monitoring task E Length of monitoring task SAMPLE INTEGRATION TIME A 5s B s CG s A CARBON MO B TVOC REF C D E W WATER VAP DATA IN DISPLAY MEMORY RECORDED FROM 2004 06 10 03 57 TO 2004 06 10 09 18 891815_1e BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 69 of 280 Chapter 4 BE6011 16 1 Press V and P The following text appears on the display WATER VAPOUR MEASURED The displays which follow indicate the type of text which appears each time VW is pressed WATER MAX 8 55E 00 u 8 15 00 ALARM 1 MIN 7 01E 00 o 816E 03 This is the statistical report of the monitored gases vapours displayed when the monitoring task is complete In this case where MAX maximum concentration of water vapour measured during the whole monitoring task MIN minimum concentration of water measured during the whole monitoring task ALARM 1 the user defined concentration of water vapour which if measured by the Monitor will trigger a switch in the Monitor and activate an
90. OK BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 137 of 280 Chapter 8 A window opens showing all the measurement values for the complete monitoring task Interval index card 4 Click in the Measurement Sequence field and a list of all the sequences in the monitoring task is displayed 5 Select the desired sequence or all sequences If you select all then you can zoom in on the individual areas using the cursor function see section 8 4 2 6 Select the interval units for the X axis Click on either Time or Measurement Number radio buttons and define the values in the From and To fields 7 Select the displayed measurement values If you want to display instantaneous values ensure that the check box in the Rolling Average group is not ticked If you want to display rolling average values click in the Rolling average check box and define the averaging interval If you have opened a numeric window go to step 8 If you have opened a graphic window go to step 13 Column index card 8 Click on the Column index card 9 If the parameters and their units displayed in the All Columns field are not correct click on the parameter you want to change If the parameters you want to display is not present in the All Columns field click on Add New or Insert Before 10 In the Single Parameter Setup group click in the Select Parameter field and select the desi
91. RATION DATA IN FILTER BANK 5 check the following information 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 203 of 280 Chapter 14 BE6011 16 Zero point calibration performed if a date appears here year month day this is the last time the zero point calibration data in this filter bank was updated Concentration offset factor if a number appears here this means that this filter bank contains calibration data obtained during a zero point calibration of filter A Hum Interference Calibration performed if a date appears here year month day this is the last time the humidity interference calibration data in this filter bank was updated Humidity gain factor if a number appears here this means that this filter bank contains calibration data obtained during the humidity interference calibration of filter A Cross Interference Calibration performed if a date appears here year month day this is the last time cross interference calibration data in this filter bank was updated Gas name interference on Filter B C D E if a number appears after these headings this means that this filter bank contains calibration data collected during cross interference calibration for this named gas If the following three conditions are found in any filter bank e Gas name if the name which appears here is the same as the name of the gas you intend to measure w
92. SUREMENT me NAGE CONFIGURATION 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 35 of 280 Chapter 3 2 To select the MEASUREMENT branch press S1 Pressing either of the other select push buttons will take you along another branch of the set up tree The following text is displayed SELECT SET UP BRANCH A lt gt v MONITORING TASK SINWVANSO NIU LIN a ha a P ON To select the ENVIRONMENT branch press 53 The text is displayed SELECT FLUSHING MODE FIXED TIME P UO A lt gt v P N P N 3 To select the AUTO flushing mode press Sil The following text is LENGTH OF SAMPLING TUBE 00 00 m gt PRESS ENTER TO CHANGE VALUE P ON displayed This branch does not divide again At this stage you are able to define the parameters in this branch of the tree using the direction push buttons If the branch had divided again it is a simply process of using the correct select push button to continue down the desired branch Parameters that are already selected are displayed either with a cursor under the current selection or the value is displayed on the top line When the correct value or parameter is already selected you can continue on through the tree using the Wdirection push button To exit SET UP mode press SET UP BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field G
93. T VOC ref Methane p W Water Vapour uv 26 60 75 100 126 160 175 200 225 250 276 300 325 360 975 Stop the calibration when you have enough raw measurement data Note if you are performing a two point span calibration or you want more than one calibration type then you can at this point stop the calibration change the Calibration Sequence Settings and calibration gas restart the measurement and collect the new raw data for the next span concentration or optical filter This enables you to gather all the measurement data and then calculate all the calibration factors in a single operation Stopping a Calibration Task Pull down the Sequence menu and click on Stop 14 5 2 Calculating Calibration Factors Once you have measured enough raw data you are able to calculate the calibration factors With the raw measurement data displayed on screen 1 Open the Cursor Values dialogue Use of the cursors is described in section 8 4 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 216 of 280 Chapter 14 BE6011 16 2 Use two cursors and the statistical data are displayed in the Cursor Values dialogue to locate a suitable range of data When you have the desired region between the cursors pull down the Sequence menu and click on Mark Interval Note the marked interval must be the same type in the whole interval The two cursors are replaced
94. UNCUION wise ty sca ccca terra ones a EEE APENE EA reer cans trees Se eee ee 185 12 7 Printing out Data from the Monitor saariin elven eke faanaen aa a a a 185 Chapter 13 Maintenance of the 1314 1412 esesesesessssnsnsnsnsnnnrnnnrusnnnnnnnnnnnnnnnnnnsnsnsnsnnnrnrnrnrnnn 187 TLE GhanGing the FINE Aira Titels rererere a a ENE A A N eee 188 13 2 Cleaning the Filter in the Ventilation Unit nssesnsnsssnnsnunnnrnnnnrnrnnnnnnennrnnrrnnrrenrenrnne 194 13 5 Cleaning tie INSUMATA a a aE 195 Chapter 14 Calibration or the Optical Fitters rirni icrsawdes sitenin rinra A aGAGn eae 196 14 About the Installed Optical Filters arino a coke a a a nad a a Eaa 197 14 2 What is Calibration and Why is it Necessary sssssssasarnnnnnnensnnrsnsnenrnrnenenenrnrrnrnnnr 198 14 3 Tasks Before Starting Any CallDratlon smiiacsves ing veeaeeiedasstansaaian ise eateaaddiaaa ses a D 202 t144 THe Basie Calibration Set UDan a N A ha cea ian eae aaa 210 14 5 General Settings for a Calibration PC USe sssssssssssssunsnrnennrnrnnnnrnenrrnrnrenrrrnrrnrnne 213 14 6 General Settings Stand alone Use ssssssssssssssrnrsnrrenrrnrrrnnrnrnrnnrnrnnnnrnenrrnrrrunrnne 221 147 Zero DPONT Calibrations eons eee A A A A 225 14 8 R midity Calibrations PO USC ges vcassanatecaersvad EAA rA EDTA a 230 14 9 Humidity interference Calibrations Stand alone US ssssssssssssrsrrrrnrsrrnrerrrrsrerre 231 14 10 Cross interference Calibrations
95. a location number from no 1 to no 10 The size of each location is flexible and is equal to the space required to store all the data collected during a monitoring task If data from a single monitoring task totally occupies the Display Memory then this data can be stored in Background Memory BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 173 of 280 Chapter 11 BE6011 16 provided that no data is already stored there The data will occupy only one location of Background Memory and fill all available storage Space Therefore it will not be possible to store any data from any new monitoring task in Background Memory unless the data already stored there is first deleted see section 11 3 3 To illustrate the variable size of each location let us suppose that the following monitoring tasks are performed Task No 1 The data collected in Display Memory occupies 20 of the total capacity of the Display Memory The data can be stored in Background Memory provided that the data already stored there occupies less than 80 of the total capacity of the Background Memory However let uS suppose that the Background Memory is empty and that we STORE the data from this monitoring task in location 1 of Background Memory This means that Background Memory is now 20 full see Fig 11 5 Task No 2 The collected data occupies 30 of the total capacity of the Display Memor
96. aded in SYSTEM Text that appears on the display screen is shown in an open shaded box using UPPER case letters FORMAT System General Clock When referring to any part of the Set up tree the text is Shown in open shaded boxes with the same typeface as that used in the tree 1 4 Tool bar Icons in Gas Monitoring Software 7304 The instructions in this manual use the pull down menu paths to describe how operations are possible However in many cases the icons in the tool bar can be used to speed things up S ell gt i ufa HE Ae ALS Bl 2 1 2 3 4 5 6 7 8 9 10 11 12 13 The text below provides the key to the icons 1 Create a new measurement task 2 Open an existing measurement task 3 Copy active window to clipboard 4 Print active screen 5 Change sequence settings 6 Online and calibration only Start a measurement sequence 7 Online and calibration only Pause a measurement sequence 8 Online and calibration only Stop a measurement sequence 9 Auto scale axis from 0 to maximum value only available when the Auto scale OFF is selected in the windows properties dialogue BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 11 of 280 Chapter 1 BE6011 16 10 11 12 13 Auto scale axis from minimum to maximum values only available when the Auto scale OFF is selected in the windows properties dialogue Zoom in o
97. ale off Min O Max 50 C Graphic Window 1 550 A Carbon monc sqq Select parameter Select unit re mBar B TVOC ref Me i 450 Carbon monoxide X ppm hi 20 400 Select colour Select style 1019 50 15 350 Define 1019 25 10 300 950 Add New Insert Before Remove 5 l 200 All Curves 1019 00 0 150 Carbon monoxide mgr i 26 28 30 co Val G ie C Cursor Pos n a gt 0 wn a ol Se me 65 g0 Water Vapour Tdew C ma Carbon monoxide mgr n a Air Pressure mmHg n a O NM Interval index card 3 Select the interval units for the X axis Click on either the Time or Measurement Number radio buttons and define the interval length 4 Select the displayed measurement values BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 135 of 280 Chapter 8 If you want to display single measurement values ensure that the check box in the Rolling Average group is not ticked If you want to display rolling average values click in the Rolling average check box and define the averaging interval If you have opened a numeric window go to step 5 If you have opened a graphic window go to step 11 Column index card 5 Click on the Column index card 6 If the parameters and their units displayed in the All Columns field are not correct click on the parameter you want to change If the parameter
98. alibration radio button is selected two check boxes appear in the Calibration Parameters field Perform Water Vapour Span Calibration this is a span calibration performed specifically on the water vapour filter installed in the filter carousel position W When you tick this check box a clean wet gas with a known water concentration must be used This concentration must be entered in the Water Concentration field Humidity Interference this calibration is performed on all the filters However like the zero point calibration you are able to select which filters receive the humidity gain factors when you download them Like the span calibration of the water filter a constant concentration of wet gas is required here However you do not need to know the concentration of the water vapour in this case These calibrations can be performed individually or both together which ever suits your needs Setting up and performing a Humidity Calibration Note the gas supply required during a humidity calibration is a clean wet air supply as described in section 14 4 1 The general equipment necessary to perform a calibration task is described in section 14 4 Follow the procedure from step 1 to step 3 inclusive and then continue as follows 1 Follow the instructions in section 14 5 1 up to step 7 2 Click on the radio button next to Humidity Calibration on the Calibration index card Select one or both of the calibration tasks
99. alues It is the active values which determine how the Monitor will operate Warning Failure to define any parameter may result in the default parameters being used This can result in the monitor measuring incorrectly or being unable to start the measurement task 7 1 The Parameters Units The Monitor works internally with measurement parameters in SI units These units can be converted and displayed as a variety of other measurement units Defining the units here has two uses It enables you to set up the measurement parameters using familiar units and displays the measurement results with the desired concentration units These parameters are listed below Table 7 1 The possible parameter units and the default settings Parameters Units Default Unt Pressure mbar mmHg kPa kPa 3 m Gas mg m ppm mg m Concentrations 3 The units for existing measurement results can also be changed using these instructions BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 94 of 280 Chapter 7 Normalization Temperature If you have chosen to measure gas concentrations in the unit mg m3 you must enter the temperature at which the Monitor Should calculate gas concentrations If for example you enter a normalization temperature of 25 C the measured gas concentrations which appear on the display during a monitoring task will be calculated in mg m3
100. and make the Monitor perform the task for a period of time If you are unsure about setting up and starting a monitoring task full instructions are provided together with an example in section 4 3 for PC use and section 4 4 for stand alone use 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 209 of 280 Chapter 14 14 4 The Basic Calibration Set up The general equipment required to perform the calibration is shown in Fig 14 5 Three different lengths of teflon tubing are connected to a Y piece The tube attached to point 1 is connected to the air inlet of the Monitor the tube attached to point 2 is attached to a gas flow meter or similar apparatus and the tube attached to point 3 is at tached to the cylinder of gas which is to be used during calibration Fig 14 5 General equipment required for a calibration task To flow meter Pressure Teflon gauges tubing A Gas flow Attachment point no 2 Y piece Attachment supply Fa Gas supply point no 1 Teflon tubing connected to air inlet of the monitor cylinder Attachment point no 3 Monitor 893264 le Attaching a gas flow meter serves two vital functions see Fig 14 6 Fig 14 6 Schematic diagram of a flow meter gt To atmosphere to flow meter PWA YZ Y piece 7 from gas cylinder A To the monitor 893266_1e LumaSense Technologies A S Page 210 of 280 1314 Pho
101. and the water vapour filter W but due to lack of space on the display the Monitor first only displays the signal measured using the water vapour filter The data log print out however shows the signal measured using all installed filters as well as the water vapour filter A maximum of 6 measurements are stored in the Monitor during any calibration The number n indicates how many measurements are stored When 7 measurements have been performed the number n will show the number 6 because the very first measurement is overwritten by the 7 measurement so that only 6 measurements are still stored When 8 measurements have been completed the number n will also show 6 because the results of the first and second measurements have been overwritten by the 7 and 8 measurement results and so on 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 235 of 280 Chapter 14 14 10 BE6011 16 3 Let the Monitor continue measuring the clean wet air until the temperature in the cell is stable Look at the print out of the average and standard deviation measurements for 1 the water vapour and 2 all the other filters When all these values have stabilised calibration measurements do not need to continue Continue to the next Step 4 Press Mi This will cause the results of measurements made with all the other installed filters to be displayed for example A p
102. ank each time you span calibrate with a different gas In this way the conversion factor for each gas is stored in separate filter banks for stand alone use see Fig 14 14 The gas conversion factor stored in the selected filter bank during a span calibration task will be overwritten by the new gas conversion factor calculated during the span calibration of the filter 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 238 of 280 Chapter 14 Gas to be Used During Span Calibration The gas you need to use during span calibration must be the gas you wish to measure with the filter Type of Span Calibration Single point or Two point Fig 14 20a Graph showing a non linear span calibration curve which can be plotted using the signals measured during a two point span calibration task Two point Span Calibration of Filter A using span gas A Vao V high Total signal in the cell compensated for water vapour s signal contribution V low j Vio V offset Gas Concentration 89201le Measured concentration 2700 3000 Concentration of gas 920005e BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 239 of 280 Chapter 14 The question about whether to perform a single or a two point span calibration is difficult to answer as it is dependent on how linear the relationship is between a
103. ank number tells the Monitor exactly where in the Source Memory to store the calibration factors calculated during the calibration task Fig 11 2 The state of the Source Memory after completion of a CALIBRATION TASK Source Memory 1 Calibration Factors 2 Optical filter 3 Other Set Up Parameters Set Up Parameters Filter Bank No A l B Calibration data is stored in CALIBRATION TASK the Filter Bank which is active during calibration 1 Calibration Factors from Active Filter Banks 2 Optical filter 3 Other Set Up Parameters Set Up Parameters pC ees oT A B l l l l 2 4 Background Memory 5 Display Memory data copied from storage of Display Memory measurement results Working Memory After completion of a calibration task the calibration factors which are found in the Working Memory are entirely dependent upon the Filter Bank No which is active for each optical filter If Filter Bank No 1 is active for filters in positions A to D and Filter Bank No 2 is active for the filter in position E then calibration factors from flesA1 B1 C1 D1 E2 and W will be found in Working Memory see Fig 11 2 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 170 of 280 Chapter 11 11 1 5 Set up BE6011 16 Effect of Changing the UA number in the Active WARNING Changing the UA number of a filter in the Monitor s active
104. ant to realise that when the averaging function is switched off the original measurement results will be shown again on the display An example of averaged measurements is given in section 7 2 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 148 of 280 Chapter 9 Fig 9 1 Organisation of monitoring task data displayed on the monitor s screen EB identification of measurements DATA IN DISPLAY MEMORY RECORDED FROM stored in Display Memory 2004 06 10 08 57 TO 2004 06 10 09 18 gine Fe WATER VAPOUR MEASURED Statistical analysis of WATER MAX 12 0E 00 u 8 15E 00 measurement results for ALARM MIN 11 7E 00 co 79 5E 03 each individual gas List of measurement results for each individual gas W WATER VAPOUR 1013 0mBar 2004 06 10 08 57 35 1 11 9Tdew W WATER VAPOUR 1013 0mBar 2004 06 10 08 58 11 2 11 9Tdew GB Overview of monitoring task E Length of monitoring task SAMPLE INTEGRATION TIME A 5s B Ss oe s A CARBON MO B TVOC REF Gi D E W WATER VAP DATA IN DISPLAY MEMORY RECORDED FROM 2004 06 10 03 57 TO 2004 06 10 09 18 891815_1e BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 149 of 280 Chapter 9 9 1 1 9 1 2 gt aid Using these push buttons users can scroll horizontally through any vertical level of data For example if the statistical analysis of the mea
105. arameters are displayed If you want to change any of the display parameters then do this using the Windows Properties dialogue Right Y axis index card It is here you define the scale of the right Y axis which curves are allocated to this axis and their appearance All the values in this index card are set up in exactly the same way as those in the Left Y axis index card Event index card presentation only BE6011 16 There are five check boxes that can be selected here If a tick appears in the check box then this event is displayed in the graphic window Communication Errors are marked by a line with a C at the end of it These indicate when a communication error has occurred between the monitor and the PC Alarms are marked by a line with a small red triangle at the end These indicate when the alarm was triggered and which gas triggered the alarm User Events are marked by a cursor with a User event Text at the top of it 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 123 of 280 Chapter 8 Gas Monitor Warnings Errors Event Description Marks Common Marks apply to all filters p The Monitor stopped measuring due to a power failure but automatically re started monitoring again after regaining power The Monitor was reset because a fault was detected Text the Event button was pressed w An operational error was de
106. arts immediately Stopping the Monitoring Task 7 4 3 buttons BE6011 16 If no pre set monitoring period is defined then to stop the monitoring task press and 53 Stand alone Use using the Front Panel Push Before a monitoring task is started the set up as described in section 7 2 must be completed Before any monitoring task is started all data stored in the Monitor s Display Memory is removed cleared The Display Memory is where the Monitor stores the results of all measurements while it is performing a monitoring task However the data in Display Memory can be copied into and stored in the Monitor s Background Memory This operation is described in section 11 2 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 113 of 280 Chapter 7 BE6011 16 MONITORING TASK CALIBRATION TASK When you start a new monitoring task the following warning is displayed WARNING DISPLAY MEMORY WILL BE DELETED to remind you to store any data that is presently stored in the Display Memory If a monitoring task is stopped any data already stored in Display Memory will be deleted when a monitoring task is started 1 Press The following text appears on the screen ACTIVE TASK MONITORING TASK NUMBER 1 START TASK DELAYED TASK CHANGE TASK d gt y N y N P N Please note if you do not use one of the select keys within a short time after the
107. as Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 168 of 280 Chapter 11 Memory a warning WARNING DISPLAY MEMORY WILL BE DELETED is displayed whenever a user attempts to perform an operation with the Monitor which will result in the deletion of data from Display Memory Data in Display Memory can be copied into the Monitor s Background Memory see Block 5 below to protect it against accidental deletion Alternatively the data in Display Memory can be printed out by connecting a printer to the Monitor and transmitting data via either the IEEE 488 or the RS 232 interface port of the Monitor see Chapter 12 The storage space in Display Memory is finite Once this memory has been filled by data from a monitoring task any additional data collected will start to overwrite some of the data already stored there see section 7 2 2 for details Block 5 Stored Measurement Data 11 1 4 BE6011 16 By selecting to STORE data when the Monitor is operating in Memory mode the user can copy data from Display Memory into Background Memory to protect data against accidental deletion from the Display Memory see section 11 3 1 for further details The storage space in Background Memory is finite and is exactly the Same size as the storage space available in Display Memory see section 9 3 for further details Data which has been stored in Background Memory can be recalled to the Display Memory
108. as Monitor Page 265 of 280 Chapter 16 16 1 16 2 BE6011 16 All the possible error messages connected with calibration results are discussed in this chapter Messages fall into three calibration categories 1 successful 2 uncertain and 3 invalid An explanation is given of each message and its significance so that the user can ascertain what action to take if such messages are displayed after calibration Successful Calibration Messages The messages listed below indicate 1 that the calibration task you have just performed has been successful and 2 that the calibration factor calculated during the calibration task has been stored in the filter bank which was selected active during the calibration task ZERO POINT CALIBRATION SUCCESSFUL HUM INTERFERENCE CALIBRATION SUCCESSFUL ZERO POINT HUM INTERF CALIB SUCCESSFUL GAS X SINGLE POINT CALIBRATION SUCCESSFUL GAS X TWO POINT CALIBRATION SUCCESSFUL Where Gas X is the gas used during the span calibration of the filter installed in position X of the filter carousel Where X A to E or W Successful Calibration Messages The messages listed below indicate 1 that the calibration task you have just performed is perhaps not as good as can be expected 2 that the calibration factor which has just been calculated has been stored in the filter bank which was active during the calibration task and 3 that you will have to judge th
109. as Monitor Page 269 of 280 Chapter 16 BE6011 16 When the two signals have been measured the Monitor then finds the value 0 1 of Vn and finds out the relationship between the measured values If there is a perfectly linear relationship between the points Ciow Viow and Chigh Vhigh then Vin Ch Ci VI GAS X MEAS INDICATES LINEAR COHERENCE This message will be given in the status display if V lies between the values Vin and Vin This indicates that the two gas concentrations you have chosen lie in the linear region of the calibration curve If the high concentration of gas you used Chigh is equal to or greater than the highest concentration you expect to measure then it is not necessary to use a two point span calibration a single point span calibration using Chign as the concentration of Span gas used will be sufficient to give you a good calibration result However if the high concentration of gas you used is less than the highest gas concentration you expect to measure the two point span calibration task should be repeated using a high concentration which is equal to or greater than the highest concentration you expect to measure There will therefore be a better chance to find a point in the non linear region of the span calibration curve so that any non linearity can be plotted GAS X MEAS DOES NOT FIT NON LINEAR CURVE This message will be given in the status display if Vi is less than Viin
110. as Monitor Page 36 of 280 Chapter 3 Defining parameters is covered in section 6 2 The procedures in the example above are common to all the situations where the select push buttons can be used to access the different levels in the monitor BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 37 of 280 Chapter 4 Chapter 4 Introduction to and Familiarization with the Monitor July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 38 of 280 Chapter 4 The Monitor is an extremely versatile measuring instrument which can be used to perform almost any kind of monitoring task Its versatility may appear overwhelming at first but to avoid such a reaction we suggest that you read this chapter thoroughly and follow the practical exercises which are included These exercises give you a guided tour through a number of different practical procedures monitoring task performance of a monitoring task scrolling through data after completion of a monitoring task By following these different procedures the Monitor operating philosophy will become apparent and you will be able to quickly familiarise yourself with its operation and control 4 1 Special Terminology Certain terms are used to describe the operation of the Monitor and it is necessary to fully understand what these terms mean be
111. as to be performed together with span calibration 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 241 of 280 Chapter 14 The general equipment necessary to perform a calibration task is described in section 14 4 Follow the procedure from step 1 to step 3 inclusive and then follow the instructions in section 14 5 1 up to step Ja Calibration index card BE6011 16 1 Click in the Gas Span Calibration radio button The Calibration Parameters group is displayed as shown see Fig 14 21 2 Select the filter position you want to calibrate If you are recalibrating the monitor using the same filter positions and filter banks then the gas name displayed here is likely to be correct If not go to step 10 If you are calibrating for a new gas or an existing gas in a new filter bank then the gas name and molecular weight need to be typed in This is done via the Gas index card Go to step 10 3 If you require a Single point calibration go to step 4 If you require a Two point calibration go to step 5 4 Ensure that the Perform Two point Calibration check box is empty 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 242 of 280 Chapter 14 BE6011 16 Fig 14 21 Span Calibration dialogue Calibration Factory3 Task Sequence Values Bank Edit View Window About olej e a o eles ae ol hel SIS el E e g
112. asurements are stored in the Monitor during any calibration The number n indicates how many measurements are stored When 7 measurements have been performed the number n will show the number 6 because the very first measurement is overwritten by the 7 measurement so that only 6 measurements are still stored When 8 measurements LumaSense Technologies A S Page 229 of 280 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor Chapter 14 14 8 BE6011 16 have been completed the number n will also show 6 because the results of the first and second measurements have been overwritten by the 7 and 8 measurement results and so on 2 Let the Monitor continue measuring the zero gas until the temperature in the cell is stable Look at the print out of the average and standard deviation measurements for 1 the water vapour and 2 all the other filters When all these values have stabilised calibration measurements do not need to continue Continue to the next step 3 Press Mi This causes the following text to appear on the screen These results have been shown on the data log print out If they have stabilised continue to the next Step 4 Repeat step 3 until the signals measured with all the filters have been displayed stabilised and been accepted The text CALCULATION PLEASE WAIT appears on the screen The Monitor only uses the last six measurement results when calculating any calibra
113. ature is 20 C then you can ENTER WATER VAPOUR CONC as 18 Tdew The procedure for setting up a span calibration of the water vapour filter is as follows 1 Press 53 3 S1 then the following text will be displayed PERFORM ZERO POINT CALIBRATION NO YES 2 Follow the set up of a span calibration of the water vapour filter by following the black arrows in the schematic diagram shown in Fig 14 26 The following text will appear CONNECT WATER VAPOUR 18 0 Tdew AND PRESS ENTER WHEN READY 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 254 of 280 Chapter 14 Fig l14 26 Schematic diagram showing how to set up a span calibration task for the water vapour filter follow the arrows PERFORM ZERO POINT CALIBRATION NO YES using dry zero gas PERFORM HUM INTERFERENCE CALIBRATION NO YES using wet zero gas If only ONE filter A B C D E is installed in the carousel this display does not appear in the calibration set u PERFORM CROSS INTERFERENCE CALIBRATION NO YES using span gases of known concentration PERFORM GAS SPAN CALIBRATION NO YES CALIBRATE A WITH gas name appears here NO SINGLE POINT TWO POINT using span gas of known concentration GAS CONC PRESS ENTER TO CHANGE VALUE HIGH GAS CONC PRESS ENTER TO CHANGE VALUE This display ONLY appears if you have selected to perform zero point calibrat
114. ayed as instantaneous concentration curves or as average concentration curves where you define the averaging interval The numeric window can display all the measured gases and the measured atmospheric pressure simultaneously The measurement 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 48 of 280 Chapter 4 data is displayed in columns one for each parameter and the number of columns displayed is defined by you Measurement data can be displayed as instantaneous sample concentration values or as average concentration values where you define the averaging interval With the Online option selected and a monitoring task started TO open an extra window pull down the Window menu and click on New Graphic Window or New Numeric Window The measured parameters are automatically displayed in this window Click in the window you want to set up and pull down the Edit menu Click in Window Properties see Fig 4 8 Fig 4 8 The Window Properties dialogue for a graphic window 18 x Task Sequence Edit View Window About Die a PY rll EE Ae A a ea Ela 2 A Carbon monoxide ppm VW Water Vapour Tdew C Graph Window Properties i Interval Left Y axis Right Y axis Scaling Autoscale maximum and minimum Autoscale maximum minimum 0 C Autoscale off Min O Max 50 Single Curve Setup Select parameter Select unit Carbon monoxide 7
115. be performed together with the span calibration of each of the installed optical filters Cross interference calibration is not selective that 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 236 of 280 Chapter 14 14 11 BE6011 16 is if you select to perform a cross interference calibration then each time a gas is supplied to the Monitor during a span calibration the Signal in the cell is measured using each installed optical filter You cannot choose which filters should be calibrated for cross interference from a particular gas Section 14 11 includes information about how to set up a combined cross interference and span calibration task Span Calibration Before calculating the conversion factor for a filter during span calibration a concentration offset factor and a humidity gain factor must be in the filter bank which is selected for the filter during span calibration Span calibration of a filter can therefore only be done after the filter has already been zero point and humidity interference calibrated During span calibration a supply of a particular gas e g gas A1 of known concentration is attached to the air inlet of the Monitor and the total signal in the cell is measured using the water vapour filter and the filter which is being span calibrated for example A As filter A has already been calibrated for humidity interference the total signa
116. by a pair of green lines These lines have markings at the end of them which show the type of calibration data lying between the lines The markings are ZP shows a zero point calibration HS shows a humidity span calibration HI shows a humidity interference calibration HIS shows a humidity interference and a humidity span calibration SHA shows a Single point or Two point High conc span calibration filter A SLA shows a Two point Low conc span calibration filter A Pull down the value menu and click on calculate When the calculation s is complete a Calculation Finished dialogue is displayed See Fig 14 11 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 217 of 280 Chapter 14 Fig 14 11 Calculation Finished dialogue Calibration Factory3 5 x Task Sequence Values Bank Edit View Window About De Sl o ete Em ee ay Sle ey E 2 C2 Graphic Window 1 A Carbon monoxide pW T Temperature C B T OC ref Methane uY W Water Vapour uY _ Zp gt SHB SHB 360 325 300 275 250 225 200 L Water Vapour Span 175 Humidity Interference All Gas Filters 150 Gas Span 125 Single point Two point Cross Int 100 A Carbon monoxide 75 B TVOC ref Methane 50 C n a 25 wal D n a i 375 6 Cursor Values Graphic Window 1 Left Cursor 376 Right Cursor 391 No of Samples 16 Minimum Average i
117. cation N Water Vapour Tdew C Units Font q Print Prink Preview 30 Print Setup Print Monitor Measurement Data 150 Exit i Time A Carbon dioxide EB Sulphur hexaflouride Vo VVater Vapour ppm ppm Tdew C 04 05 25 08 36 23 TOF BGT 0 003 TO 04 05 25 08 37 12 690 177 0 004 if 04 05 25 17 75 25 031 733 0 003 0 0 04 05 25 11 16 11 018 208 0 004 fin 04 05 25 17 16 51 olg r23 0 004 To 04 05 25 11 17 31 034 570 0 003 o 0 E7 Cursor Yalues Numeric Window 1 Cursor Pos 04 05 25 11 15 23 View Settings Cursor Value Event Text Carbon dioxide ppm Bal fa Sulphur hexatlouride ppr O 003 Water Vapour T dew C 56 Measurement task started Print active window NUM A 4 The Print window is displayed Here it is possible to change the print settings see figure 8 12 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 140 of 280 Chapter 8 BE6011 16 Fig 8 12 The Print dialogue window for print settings I Printer Name Wainnosbeek RICOH Aficio 2238C APCS Properties Status Ready Type RICOH Aficio 2238C RFCS Whee Ricoh farvekopimaskine 1 sal Comment Farvekopimaskine 1 sal ip adr 134 168 0 215 Print to file Fint range sss A Copiez All Humber of copies fi Pages frome 1 to os Collate f Selection
118. centration of water vapour in any gas sample in the analysis cell of the Monitor and it requires no further calibration When all installed optical filters in positions A to E have been zero point humidity interference span and _ cross interference calibrated if necessary then the Monitor is able to perform accurate measurements BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 205 of 280 Chapter 14 Fig 14 4 Part of a calibration data print out 1412 Calibration Data GENERAL CALIBRATION INFORMATION FOR FILTER A Installed Optical Filter Active Filter Bank Number OPTICAL FILTER FACTORS Back temp factor Conc temp factor Hum temp 1 factor Hum temp 2 factor Hum temp 3 factor Hum sqr factor Hum cub factor ACTIVE CALIBRATION DATA Gas name Carbon monoxide Molecular weight High Alarm Limit 1 High Alarm Limit 2 Span Calibration performed Type of Span Calibration Conversion factor Concentration Microphone Signal Zero Point Calibration performed Concentration offset factor Microphone Signal Hum Interference Calibration performed Humidity gain factor Microphone Signal 1 8067E 03 8 9662E 03 1 039B 03 51 138E 03 0 0000E 00 239 0E 00 0 Q0000E 00 28 010E 00 15 0000 30 0000 2004 06 18 Single Point 651 49E 03 57 0 98 0 2004 06 15 4 9803E 06 516 2004 06 15 77 392E 03 L95 710 002 9312
119. ch are active during a zero point calibration then it is necessary to perform a combined zero point and humidity interference calibration task The set up of this combined task is discussed in section 14 13 If you only wish to set up a humidity interference calibration task the procedure is as follows 1 For each installed filter enter the no of the filter bank where you wish the Monitor to store the humidity gain factors which will be calculated during the humidity interference calibration task 2 Press 53 53 S1 then the following text will be displayed PERFORM ZERO POINT CALIBRATION NO YES 3 Follow the set up of a humidity interference calibration task by following the black arrows in the schematic diagram shown in Fig 14 18 The following text will appear on the display HUM INTERFERENCE CONNECT CLEAN WET AIR AND PRESS ENTER WHEN READY Performing a Humidity interference Calibration The general equipment necessary to perform a calibration task is described in section 14 4 and illustrated in Fig 14 5 The gas supply required during a humidity interference calibration is a supply of clean air containing a constant concentration of water vapour 1 Follow the procedure explained in section 14 4 from steps 1 to 3 inclusive and the continue as follows 2 a Connect the outer end of the extra empty flask s outlet tube B to the teflon tubing which is connected to attachment point 3 of the Y piece s
120. communication port is selected via the Gas Monitoring Software 7304 while the baud rate parity data bits and stop bits are defined via the monitor The communication parameters necessary for the monitor to communicate with the Gas Monitoring Software 7304 are shown below 9600 sd Stop bits Data bits Handshake type These are set as the default values in the monitor BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 21 of 280 Chapter 2 To prevent communication errors the text line terminator print data log and print error log must be set as shown below Text line Terminator CR LF Print Data Log Print Error Loc 2 4 1 Selecting the PC communication Port It is just a simple case of selecting the correct port on the PC The software offers four to choose from COM1 COM2 COM3 and COM4 If you are not sure which port the cable is connected on your computer refer to your PC manual Start any one of the Gas Monitoring Software 7304 options Online Offline or Calibration Pull down the Task menu Click on Communication The communication dialogue is displayed Click on the radio push button next to the correct port name Click on OK to store the selection and exit this dialogue 2 4 2 Checking Changing the Communication Parameters BE6011 16 The communication parameters for the serial interface must be set using the push buttons on the
121. coustic Field Gas Monitor Page 116 of 280 Chapter 8 Chapter 8 Viewing Measurement Data using a PC July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 117 of 280 Chapter 8 8 1 Measurement Data 8 1 1 BE6011 16 In order for the measurement data to be viewed using the PC software the data must be stored in the PC For Offline and Stand alone use where the measurement data is stored in the monitor then the data must be Uploaded to the PC All measurement data from the Monitor regardless of what is being displayed on screen during the measurement is transferred to the PC and stored in a MS Access format This measurement data can be viewed on screen analyzed and used in other software programs that utilize ODBC Uploading Measurement Data from the Monitor Any measurement data that is stored in the Monitor s display memory can be uploaded to a PC Measurement data can be uploaded either as a new measurement task which is given a unique name or it can be uploaded so that it becomes a sequence in an existing measurement task If only valid for 1412 was pressed or something happened while monitoring the uploaded data retains these marks which can be displayed using the Presentation program With the monitor and the PC connected as described in section 2 2 and the Offline program running 1 Click on Up Download index card see Fig 8
122. ct the desired location number When the chosen location number is on the screen press 52 to accept the position Press to exit BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 176 of 280 Chapter 11 11 3 2 Recalling Data from Background Memory To recall data stored in Background Memory to Display Memory 1 Press Memory S21 LOCATION NUMBER 1 PRESS ENTER TO CHANGE VALUE P N P P A lt gt v 2 Use the direction keys to select the correct location number The following text is displayed WARNING DISPLAY MEMORY WILL BE DELETED PROCEED STOP Laan P N P N A lt gt v 3 If you want to continue press Si and the following text is displayed LOCATION NUMBER 1 RECALLED ACCEPT A p gt an P UN P N If you want to Stop press 53 this returns you to the original display showing SELECT MEMORY FUNCTION so that you can STORE any data which is stored in Display Memory as explained in section 11 3 1 4 Press 52 If data has not been stored in the chosen location a message will appear on the Monitor s display to inform the user Otherwise the data from the chosen location in Background Memory will be copied into Display Memory 5 Press MEMORY to exit BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 177 of 280 Chapter 11 11 3 3 11 3 4
123. ctors which allow the Monitor to compensate for any interference gas A has on the other installed optical filters If any calibration data is doubtful or unacceptable an error message marked by an asterisk will appear on the screen after the calibration factors have been calculated Whenever an asterisk is Shown on the screen further information about the condition of the Monitor can be obtained by pressing the button Chapter 16 lists all the error messages connected with doubtful calibration results and gives an explanation of their significance so that the user can ascertain what action to take if such messages are displayed after calibration Use of Nafion Tubing during Span Calibration of UA0983 UA0984 and UAO985 A Nafion tubing an optional accessory is required during the span calibration of UAO983 e g carbon dioxide CO2 UA0984 e g carbon monoxide CO and UA0985 e g dinitrogen oxide N20 The Teflon 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 249 of 280 Chapter 14 Gas supply tubing tubing tubing cylinder Attachment 14 12 BE6011 16 tubing connected to attachment point no 3 of the Y piece should be cut in half and a tubing should be connected between the two cut ends of the teflon tubing using the tube fittings supplied for the purpose Fig 14 24 Fig l14 24 Diagram showing how to use Nafion tubing when span calibrating with one of the f
124. d that is mg m for gas A and Tdew for water vapour see section 4 4 2 Displaying Measurement Results while a Monitoring Task Is in Progress BE6011 16 If store measurement history is selected in the MEASUREMENT set up branch see section 4 4 5 all measurement data collected during a monitoring task is stored in Display Memory together with the parameters which describe the task see section 4 4 4 Using the direction keys you can scroll through this data 1 After the monitoring task has been running for 10 15 minutes press V An example of the text which appears on the screen is shown below DATA IN DISPLAY MEMORY RECORDED FROM 2004 01 16 09 50 TO 2004 01 16 10 04 This screen text allows you to find out how long the monitoring task has been running here from 9 50 to 10 04 on the same day The date on the right handside of the display indicates the time at which the last measurement cycle was completed while a monitoring task is in progress this date is of course constantly updated 2 Press W and then use lt amp gt until the following text appears on the display FILTER A USED TO MEASURE the name of the gas will appear here The displays which follow indicate the type of text which appears each time VW is pressed 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 64 of 280 Chapter 4 BE6011 16 GAS A MAX 84 5E 00 u 8 03 00 ALARM 1 MIN
125. d Filter Info soft key This takes several minutes so wait until it has finished before continuing If you are performing a Span calibration follow the steps given in section 14 11 1 For zero point and humidity calibrations follow the steps here 10 Click in the Sample Integration Time field and select the desired time Note the S I T value should be set to the same as those used for monitoring Sampling index card 11 Click on the Sampling index card 12 Select the desired Flushing Type The procedure to do this is the same as that used when monitoring see section 7 2 Note the Flushing type and values should be set to the same as those used when monitoring 13 When all the settings are correct click on OK Starting a Calibration 1 a Connect the free end of the teflon tubing mentioned in section 14 4 to the pressure valve on a cylinder of calibration gas b Gently open the pressure valve on the gas cylinder 2 Pull down the Sequence menu and click on Start The monitor will now begin to measure the raw data All the gases have the same units uV or mV Fig 14 10 illustrates how measurement data is displayed BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 215 of 280 Chapter 14 Fig 14 10 Raw calibration data displayed on screen Task Sequence Values Bank Edit View Window About olsi FY iule zl Ai dl la el Z e Carbon monoxide uv B
126. d during the performance of a monitoring task This data block is named the Display Memory because this data is displayed on the Monitor s screen while a monitoring task is being performed Block 1 Calibration Factors and 3 Optical filter Parameters from Each Active Filter Bank If for example 5 optical filters are installed in the Monitor and their UA numbers have been entered in the active set up and Filter Bank No 2 has been selected for filter A no 4 for filter B no 3 for filter C no 1 for filter D and no 1 for filter E then only calibration factors from filter banks A 2 B4 C3 D1 E1 and W will be stored in this block of data see Fig 11 1 The name molecular weight and alarm limits of each gas will also be stored in this block Block 2 Optical Filter Set up Parameters Whenever either an optical filters UA number or its active Filter Bank Number is changed the same values are automatically read into Block 2 of the Source Memory Block 3 Other Set up Parameters The active set up values are those values which are underlined by a cursor on the display screen of the Monitor when it is operated in Set Up mode Block 4 Measurement Data BE6011 16 Whenever the Monitor performs any operation which results in data occupying the Display Memory the data already stored there will be deleted To reduce the risk of accidental losing data from Display 1314 Photoacoustic Multi g
127. display to inform the user of the problem For example OPERATING ERROR PUMP TEST FAILED The user must acknowledge receipt of such a message by pressing INFO Operating errors and warning messages are listed in table form in Chapter 17 at the end of this manual If a fault is found in any of the blocks of data stored in the Working Memory the Monitor will automatically set the parameters in the relevant compartment s to their default values and the Monitor will send the following message on its display screen WARNING MEMORY SET TO DEFAULT ERROR DETECTED IN XXXXX MEMORY 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 80 of 280 Chapter 5 Where XXXXX denotes the part of the memory that has been affected When such a message is received users must check the contents of the relevant memory to find out which data has been affected before continuing to operate the Monitor 5 3 3 Response of the Monitor after a Partial Reset The way in which the Monitor responds after a partial reset is dependent upon the way it was being operated at the time of the partial reset see Table 5 1 For example if the Monitor was busy taking a measurement when it was partially reset it will complete the interrupted measurement after the partial reset continue its monitoring task and make a special mark alongside the first complete measurement cycle it performs after the reset
128. dow 1 Cursor Pos 04 05 25 17 15 23 View Settings Cursor Walue Event Text Carbon dioxide ppr 931 733 Sulphur hexaflouride ppm 0 003 Paa Water Vapour T dew C 7 967 Frint the Gas Monitor measurement data NUM A 3 The Print dialogue window is displayed 4 Select OK to print the Monitor measurement data with the actual settings BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 143 of 280 Chapter 8 8 9 3 Printing the current calibration data from the monitor Whether the 1412 1314 is to be used online or as a stand alone instrument the Gas Monitoring Software 7304 can be used to check the Monitors existing calibration All the calibration factors can be printed out directly from the Gas Monitoring Software 7304 using the Print Current Calibration option With the PC connected to the monitor and the Calibration program running 1 Pull down the Task menu bar Click on new and the New Calibration Task dialogue appears see figure 8 17 Fig 8 17 The Calibration Task menubar Calibration Task View About a Affe ala ced i alsl 2 Communication Units Font Print Setup Exit Create a new calibration task M g 2 Type in the desired calibration task name and click on OK An extended menubar and a graphic window appears see figure 8 18 Fig 8 18 The New Calibration menubar New Cal
129. e operating in Measure mode Notice the following 1 Before starting to set up a calibration task you must make sure that you choose the correct FILTER BANK NO to store the calibration factors which will be calculated during calibration see section 14 3 3 If you answer YES to PERFORM ZERO POINT CALIBRATION then ALL the installed optical filters A to E will be zero point calibrated and the concentration offset factor for each filter will be stored in the filter bank no which is active for that filter during the practical calibration task If you answer YES to PERFORM HUM INTERFERENCE CALIBRATION then ALL the installed optical filters A to E will be calibrated for humidity interference and the humidity gain factor for each filter will be stored in the filter bank no which is active for that filter during the practical calibration task If you answer YES to PERFORM CROSS INTERFERENCE CALIBRATION then during the span calibration of each filter when each known concentration of span gas is attached to the Monitor s air inlet the signal in the cell is measured using ALL of the installed optical filters The factors which describe each gas s 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 221 of 280 Chapter 14 14 6 1 BE6011 16 interference measured on the other installed filters are stored
130. e LOCK bukkon 2 6 Upgrading to newer versions of Gas Monitoring Software 7304 In order to upgrade from an earlier version of the Gas Monitoring Software 7304 a few preliminary tasks are recommended Backup of data before upgrading to a new version Please use the Full backup function in the Database Administration program i Database Administration Backup a task or filter info i Restore atask or filter i Restore info Delete an existing Delete taak Backup filter info Eull backup and alltasks Close Deleting of old program version using the explorer or through Control Panel and Add Remove programs Install the new program version Please follow the instructions from the installation program Restoring of data using the Database Administration program and the Restore function If installation of the new version is done without deleting the old version you will not have access to your old calibration and measurement tasks 2 6 1 Download of the latest version You will find the latest version of the software on http www lumasense dk BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 26 of 280 Chapter 2 2 6 2 Restoring of calibration data Example 1 BE6011 16 If you have ordered a calibration from our calibration laboratory you will receive a diskette with a backup of the calibratio
131. e Monitor can display gas concentrations either in absolute units of mg m3 unit that is dependent on a particular temperature termed the normalization temperature or in units of parts per million by volume which is independent of the temperature of the gas You can inform the monitor about the units you intend to use for example the length of the sampling tube attached to the Monitor s inlet in meters or feet atmospheric pressure kPa or mBar or mmHg and unit for humidity ppm or Taew or kPa or mg m The measurement units can be changed using the push buttons on the front of the monitor 1 Press SET UP 2 Press 53 and then 52 The following text appears on the screen display SELECT CONCENTRATION UNIT mg m ppm The cursor appears under the unit which is presently in the active set up 3 Press S11 to select mg m 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 55 of 280 Chapter 4 4 4 3 BE6011 16 4 Select metres as the unit of length C as the temperature unit and kPa as the pressure unit by using a procedure similar to that described in the previous steps After the pressure unit has been selected the following text appears on the display SELECT HUMIDITY UNIT mg m PRESS ENTER TO CHANGE VALUE There are more than three humidity units to choose from therefore the means by which a unit is selected differs 5 Press Mi
132. e USE irena n a Aa A E O ATA 35 Chapter 4 Introduction to and Familiarization with the Monitor cccccseeeeeeeeeeeeeeeeeseeeeeeeensags 38 4 1 Special Terminology wivasusvuv edad nnne Aaa aA EEEE ED TE AE i 39 4 2 Attaching the Sampling Tube and External Filter asssnusenssrsnsrsnrerrrrnrnrerrnrerrrrnrerenrne 42 4 3 Familiarization with the Monitor using Gas Monitoring Software 7304 ccccceeeeeeeeeees 43 4 4 Familiarization with the Monitor using Front Panel ccccccce cece eeee sete eeeeeeeeeeeeeeeeeeees 53 Chapters Tine MONLO sisdadaniccetciaancand ace daisies can or secad ean awit emanate a I 74 De VEO GRACE Ii paseo tesa EEE E A T AAA are ea eet on aan nce ca eum nsater at es ee etme nae bees 75 Se jIPEOME ciel eoan AELE a AAT AA towers yaedan erat yuee uae 75 5 3 Starting up or Restarting the Monitor s cecssisaeisicsiedetanivemwehcetdannewn bianco a 79 Dee JCOMTIGUMING ME MONO cast veteun sicheriena bet oalwera hanes oven katndtata nee ceavwnr game AE LAA 83 Deo PALI held y aacceonnbu aaa uneanecnua AAT ATT seat ames pou amnae A Eaa 86 Chapter 6 Keying in Parameters aerer a a a a a a ea a 88 Gil Types ol Parameters raien e EAE ETA TAI ETA inion 89 G62 CHOOSING PAlaimecens asra ETILE a AET AA AE TECO 89 Chapter 7 Setting up and Starting a Monitoring Task sssssesssssssssrrsrsrrnrsrrnrnrerrnrnnerrnrererrnreno 93 FAs THe Parameters UMMUS ssh corsssaits corks a e a A E E 94 7 2 The Measur
133. e allocated to either of the two axes The scale and units of these axes can be set individually to suit the displayed value on them The number of curves displayed their colour and their styles are defined by you Measurement data can be displayed as instantaneous concentration curves or aS average concentration curves where you define the averaging interval This window also displays several MARKS These appear if something happens during the measurement or an alarm is triggered If any events have been added during the monitoring task these are also displayed here These marks and events are always displayed with the Online program but can be hidden with the Presentation program See Events index card in section 8 2 1 and section 8 3 1 When using the Online program the latest measurement results are always displayed at the right hand end of the axis Previous measurement results roll across the X axis disappearing from view at the left Y axis when the interval defined for the X axis is full These measurement results are not lost just not displayed Graphic Window Properties Dialogue Box This dialogue box enables you to define exactly what is displayed in the graphic window The separate sections are divided up by index cards To simplify matters the following explanations are given under the index card name headings Interval index card BE6011 16 This index card is divided into several groups Measurement Seque
134. e appears see Fig 7 1 Click on the radio push buttons to select the desired units If you have selected the mg m unit for the gas concentration click in the Normalization Temperature field these temperature values change depending on the temperature units selected i e C F and K 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 96 of 280 Chapter 7 4 Select the desired value and click on OK All the parameters units are now set 7 1 3 Stand alone Unit Set up For those of you setting up the monitor using these instructions it may be useful for you to follow the steps taken using the Set Up Tree The philosophy of the instructions is described in section 3 3 To enter at the top of the Set Up Tree press SET UP and the monitor displays the following screen text SELECT SET UP BRANCH MEASUREMENT TOLNAY CONFIGURATION 1 Press 3 to enter the CONFIGURATION branch The new text displays three branches SELECT CONFIGURATION SET UP BRANCH SYSTEM UNIT FILTERS Units branch 2 Press 52 to enter the Units branch Je Use the select push buttons to define the concentration unit 4 Use the select push buttons to define the length unit 5 Use the select push buttons to define the temperature unit 6 Use the select push buttons to define the pressure unit 7 The humidity unit is displayed Use the direction push buttons to change it to the co
135. e considered as there is only a finite amount of memory in the monitor See section 9 3 for full details about the storage capacity of the monitor PC Use using the Online Program Using the PC a monitoring task can be paused or stopped and then re started at your convenience This means a monitoring task can comprise of one or more monitoring sequences where each sequence has a distinct name When sequences are measured consecutively using the same name a number appears after the name starting at 1 This shows the order in which they were measured Before a monitoring task is started the set up as described in section 7 2 must be completed 1 Pull down the Sequence menu and click on Start The New Measurement Sequence window opens 2 Inthe Enter sequence description field type in the name of the monitoring sequence If you do not enter a name the default name is used Sequence 1 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 110 of 280 Chapter 7 3 Inthe Start Time group To start the measurement immediately click on the Now radio button or To delay the start click on the Start at radio button and define the start time 4 Inthe Stop Time group If no stop time is required click on the None radio button This means the measurement must be stopped manually or To determine the duration of the monitoring sequence click on the Stop at
136. e is measured during the Humidity Interference Calibration of each installed filter A supply of zero gas containing a constant concentration of water vapour is attached to the air inlet of the 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 199 of 280 Chapter 14 BE6011 16 Monitor The signal in the cell is measured with the water vapour filter and with all the other installed optical filters The water vapour in the cell absorbs light from the water vapour filter and from the other installed filters producing signals which are related to water vapour s relative absorption of the light at the wavelengths transmitted by the different optical filters see Fig 14 2 We know however that the ratio of the signal measured with any one filter e g A and the signal measured with the water vapour filter is a constant This ratio is related to the Humidity Gain Factor calculated during the humidity interference calibration of filter A For example if the signal produced by water vapour when using the water vapour filter is 160uV and using Filter A is 16uV then if the signal measured with the water vapour filter is found to be 80uV we know that this concentration of water vapour will produce a signal of 8uV when Filter A is used Measurements made during humidity interference calibration of the installed filters therefore enable the Monitor to compensate any
137. e pulley wr oe Y 4 Take out the Filter Wheel 5 Using clean gloves lift the chosen optical filter out of its box by holding its edge between the thumb and forefinger BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 263 of 280 Chapter 15 6 Insert the Optical Filters and fit the locking spring Check that the locking spring is fitted correctly around the groove of the optical filter 7 Reinsert the Filter Wheel with the mark Face IR Source towards the IR source 8 Note the UA number of each optical filter and its position in the filter carousel for example UA 0983 in position B UA 0988 in position D and so on 9 Enter the correct UA number of the optical filter installed in each position A to E of the filter carousel section 14 3 3 provides details This is a very tmportant step as it determines the set of Optical Filter Factors which will be used during the calibration of each optical filter If the UA number is not correctly entered then the filter cannot be calibrated to measure any gas accurately BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 264 of 280 Chapter 16 Chapter 16 Messages Related to Calibration July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field G
138. e validity of the calibration If you judge it to be invalid then the task will have to be repeated so that the calibration factor stored in the filter bank can be overwritten by a new and valid factor You can find out why there is uncertainty about the validity of the calibration factor by pressing INFO The messages displayed when is used are discussed in section 16 4 ZERO POINT CALIBRATION SUCCESSFUL HUM INTERFERENCE CALIBRATION SUCCESSFUL ZERO POINT HUM INTERF CALIB SUCCESSFUL GAS X SINGLE POINT CALIB SUCCESSFUL GAS X TWO POINT CALIBRATION SUCCESSFUL 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 266 of 280 Chapter 16 16 3 16 4 Invalid Calibration Messages The messages listed below indicate 1 that the calibration factor calculated during the calibration task you have just performed is not valid and therefore has not been stored in any filter bank and 2 that the calibration task must therefore be repeated ZERO POINT CALIBRATION INVALID HUM INTERFERENCE CALIBRATION INVALID ZERO POINT HUM INTERF CALIB INVALID GAS X SINGLE POINT CALIB INVALID GAS X TWO POINT CALIBRATION INVALID Error Messages Displayed when the INFO button is used 16 4 1 BE6011 16 All successful or invalid calibration messages are marked with an asterisk which tells you that more detailed information about the calibration can be
139. ed see section 14 6 1 In this way you can protect your original concentration offset factors BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 225 of 280 Chapter 14 14 7 1 BE6011 16 Setting a Zero point Calibration PC Use Note the gas supply required during a zero point calibration is a pure gas that does not absorb infra red light e g pure nitrogen Note if you want to be able to use this zero point calibration in connection with a span calibration of the water filter then is vitally important that the gas is perfectly dry The general equipment necessary to perform a calibration task is described in section 14 4 Follow the procedure from step 1 to step 3 inclusive and then continue as follows Use the instructions in section 14 5 1 Click on the radio button next to Zero Point Calibration on the Calibration index card Now continue from step 8 in section 14 5 1 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 226 of 280 Chapter 14 14 7 2 Setting up a Zero point Calibration Stand alone Use Fig 14 16 Schematic diagram showing how to set up a zero point calibration task follow the arrows PERFORM ZERO POINT CALIBRATION NO YES using dry zero gas PERFORM HUM INTERFERENCE CALIBRATION NO YES using wet zero gas If only ONE filter A B C D E
140. ee Fig 14 7 Caution the inner end of the empty flask s outlet tube B must NEVER be covered by water 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 234 of 280 Chapter 14 BE6011 16 b Gently open the pressure valve on the zero gas cylinder c Press I d Use the pressure valve on the zero gas cylinder to regulate the flow of gas so that when the Monitor s pump is running there is a positive flow of gas out of the flow meter This will ensure that the wet zero gas is not contaminated by atmospheric air The following text appears on the screen RESULTS NOT YET AVAILABLE PLEASE WAIT The Monitor draws in the clean wet air and measures the signal in the cell with the water vapour filter as well as with all the other installed filters Once the first measurement result is available the screen text illustrated above is replaced by a screen displaying Signal measured using the water vapour filter for example the following W p 340 uV o V 1 39 3 C PRESS ENTER WHEN RESULTS ARE STABLE As soon as measurement results are available they do not only appear on the display but are automatically printed out on the printer if the monitor is set up to print a data log Remember to turn off the data log when the calibration is complete Each time a sample of gas is drawn into the analysis cell the signal is measured using all the installed optical filters
141. ee section 8 5 for full details 26 Press OK to save the selections and exit the dialogue box The measured data will now be displayed on screen Changing Units after a Monitoring Task The Monitor has all the measurement data as SI units So to change any of the displayed parameters units it is simply a case of repeating the instructions in section 4 3 2 For example change the selected concentration units to ppm and see how they are displayed on screen 4 4 Familiarization with the Monitor using Front Panel 4 4 1 BE6011 16 Setting the Internal Clock Before dispatch from the factory the internal clock of the Monitor is set to the correct local Danish time If the monitor is to be used as a stand alone instrument then the clock can be adjusted to your local time using the following instructions 1 Switch on the AC Mains power switch on the back panel of the Monitor 2 Press SET UP Refer to the Set Up Tree supplied with the Monitor so that you can follow your movement through the various branches of this tree in the following sequence of button presses 3 Press 53 S1 S1 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 53 of 280 Chapter 4 BE6011 16 The following screen picture appears CURRENT DATE 2004 04 19 PRESS ENTER TO CHANGE VALUE Dates are entered as the Year Month Day for example the 19 April 2004 has to be ente
142. elected the correct filter bank numbers click on OK The calibration factors are now downloaded to the monitor 14 5 4 Downloading Existing Calibration Factors BE6011 16 If you have made a back up of the calibration factors present in the monitor using the Upload Banks from Gas Monitor option it is possible to reload them again without performing the calibrations described above This is possible using the Download Banks to Gas Monitor option You can download the values for all the filters or 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 220 of 280 Chapter 14 14 6 BE6011 16 you can select single filter values to be downloaded This is done as follows 1 Pull down the Bank menu Click on Download Banks to Gas Monitor and the Download Banks to Monitor dialogue appears 2 Click on the desired radio button All Banks or Single If you select Single highlight the correct filter and filter bank 3 Click on OK General Settings Stand alone Use Before a practical calibration task can be started the monitor has to be informed about the kind of calibration task you wish it to perform This is done using the push buttons on the front panel of the Monitor The Calibration Task Set Up Tree is illustrated in Fig 14 13 It Should be used to help you follow the path through the different levels of the calibration set up The calibration tasks are set up whil
143. ement Parameters esssssesserssessssssnssossnnusnsnenensnenennenssesenensnsnonenenenenene 98 7 3 Setting up the Monitor s Alarm Levels sssssnsssnssssssnnnrsnrrrnrrnrnrnnnnsnennrnrnrerrnerrnnrnne 109 Z4 Staring MOnItOnnG TaSK eierne a a a E AA 110 Chapter 8 Viewing Measurement Data USING a PC ssssssssssrsrnssrnnsnenerenenrnsnrnrnrnrnrnrnrrrrnrnrnr 117 Ot Measurement Data arigi a arrin E r a O N 118 8 Grape WV GOW arera naa a aa a a a 120 8 NUMENC WINGOW noriet issi oran E O a a AA E E A AAA 124 SA USNI ARS CUSSONS rirni A A A A oe pene a 128 8 5 User Event MaRKErS ssworseecerssennus Ean T tid E A AOE A 131 BO SAUS WINGOWS sirre sienna a EE AA AEA A EE E A 133 8 7 Displaying Measurement Results while Monitoring ssssssssssssssnsnsrsnsrsrsnsnrnrnrnrnrrenes 135 8 8 Displaying Measurement Results after Monitoring sssssssssrssrerersrrsrerenrerrrrnrrrrreerre 137 8 9 Printing Measurement Results ssssssssssnsssssssesnsnsnnenssssensnsnsnenonenensenesessasesererererene 140 Chapter 9 Viewing Measurement Data Using the MOnItOr sssesesssssssnernrnrnrnrnnrnrnrrrrernrnrrrnne 146 9 1 Displayed Monitoring Task Dalari a a a a oh 147 9 2 Printed Monitoring Task Data sssssssssssssnesnseonnsnsunnnsnnuunnsnnuunnsnnnusnnuennnnsnnnnsnnunnnnn 152 99 Storage Space iN the Display MemOFy cascine A AA AA Aa 156 Chapter 10 Database Administration for PC US sssessssssssssrsrerenrsrerrnrnrenenrrnrrrnneren
144. ent From the stored configuration Do you want to blank corresponding values When a new set up is stored in the monitor following message appears the first time the monitor is connected to the software Calbration Fa IN Filter configuration has changed m Gas Monitor Reloading filter mfo now Select OK The new optical filter data from the monitor is then transferred to the Gas Monitoring Software 7304 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 32 of 280 Chapter 3 Chapter 3 Philosophy of Operation July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 33 of 280 Chapter 3 The monitor has several essential operational features which enable you to operate it without undue reference to this Instruction Manual The main features of the monitor which ensure its simple and easy operation are listed below e The fully comprehensive Gas Monitoring Software 7304 e The short self explanatory texts which appear in the monitor display when the monitor is being used give operational guidance to the user e The small light emitting diodes at some of the push buttons allow the user to identify how the monitor is operating at any particular time e Audible warning beep if any push buttons are used in the wrong Way 3 1 PC Use Online A monitoring system whe
145. er a time and date or a measurement number depending on what was defined in the Window Properties dialogue The displayed measurement values and their display units are listed on the left hand side of the dialogue Opposite each parameter under the heading Cursor Value there is a value displayed This is the measured value for the parameter where the cursor has been positioned There is a soft key View Settings which enables you to see the measurement s settings see section 7 3 for the measurement sequence Fig 8 3 The Cursor Value window using a single cursor i5 xl View Settings Cursor alue Event Text Carbon monoxide ppm 22 179 Eh a m TVOC ref Methane ppm 2138 Ann ven Lint 1 Water Vapour Tdew C 9 412 re PC Carbon monoxide 110 000 ppm Limit 2 l 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 128 of 280 Chapter 8 8 4 2 BE6011 16 Note the View Settings soft key is only available when this single cursor is displayed Two Cursors If you are interested in the measurement data in a particular range or need to zoom in then two cursors can be used The second cursor is displayed when you click on the initial cursor either of the cursors in the numeric window hold the left mouse button down and drag the cursor to the desired position and then release the mouse button The two cursors are qu
146. er vapour concentration in the set up of the span calibration or that the concentration of water vapour used was not the same as that which was entered in the set up Successful Error Messages WATER VAP MEAS lt OFFSET MEAS This message is associated with one or more of the following calibration tasks 1 the one or two point span calibration of an optical filter 2 the cross interference calibration of the installed optical filters A to E 3 the zero point calibration of all the installed optical filters A to E During all the above listed calibration tasks the signal in the cell is measured using the water vapour filter this enables the Monitor to compensate for any interference signal produced by the presence of any water vapour in the span gas being used If the signal in the cell using the water vapour filter is found to be less than the concen tration offset factor for the water vapour filter the above message is sent This could indicate that the zero gas you used during the zero point calibration of the water vapour filter was not perfectly dry SPAN MEASUREMENT TOO LOW This message is associated with the span calibration of one or more of the filters The above message indicates that the signal measured in the cell during span calibration is less than 3uV and therefore cannot be used to obtain a good calibration This means that the concentration of your span gas is too
147. eric window Single Column Setup you define which parameters are displayed and their units Select parameter by clicking in this field the names of all the gases and atmospheric pressure measured during this monitoring task are displayed The gases and pressure are selected individually Select unit this enables you to display the desired units for each gas and for the atmospheric pressure When you click in the select unit field the available units for this parameter are displayed All Columns if a component s parameter is to be displayed in the numeric window then it must appear here Parameters are entered in this field by first selecting their name and units and then pressing the Add New soft key Note that if a parameter already appears here but you want to edit the units then you must remove the existing parameter and add it again with the changed units Soft keys these three keys are used to edit the names in the All Columns list Add New if this is pressed after the appearance of a parameter has been defined then the gas is added to the end of the list of gases already displayed Insert Before this puts the selected parameter at the top of the list Remove this enables you to remove a parameter curve name resulting in this curve not being displayed Note the fastest way to set the properties in the numeric window is when the sequence settings are defined open a new numeric window All the selected compone
148. ero gas containing an accurately known concentration of water vapour 900165 le LumaSense Technologies A S Page 257 of 280 Chapter 14 1 Press 53 53 S1 then the following text will be displayed PERFORM ZERO POINT CALIBRATION NO YES 2 Follow the set up of a combined zero point and humidity interference calibration by following the black arrows in the schematic diagram shown in Fig 14 27 The following text will appear ZERO POINT CALIB CONNECT CLEAN DRY AIR AND PRESS ENTER WHEN READY 3 Refer to section 14 7 3 for the practical details of a zero point calibration task When the zero point calibration task is complete the following text appears on the screen HUM INTERFERENCE CONNECT CLEAN DRY AIR AND PRESS ENTER WHEN READY 4 Refer to Section 14 9 2 for the practical details of a humidity interference calibration task 14 14 Setting up any Combined Calibration Stand BE6011 16 alone Use Although we have separated the various calibration tasks and described how to set them up and perform them alone it is of course possible to set up any combination of calibration tasks for example that combining the zero point and humidity interference calibration tasks described in Section 14 13 After setting up any combined calibration task the Monitor responds by telling you about which gas supply is required for each calibration task When the combined calibration task is complete the text CALCULATI
149. ers Moisten a cotton bud with pure acetone and use it to clean the surfaces of the unit Refer to Fig 13 5 Place the unit with its handle end downwards on a clean dry surface Fig 13 5 Cleaning the surfaces of the internal air filtration unit Notes Only proceed to the next step when the acetone has completely evaporated from the air filter retaining disc and filtration unit Each of the fine filter papers DS 0759 are packed between two pieces of packing paper The fine filter paper is always white in colour Remove a new fine filter paper from its packaging using the tweezers Hold it by its edge Refer to Fig 13 6 Lift the filter up and place it inside the unit Fig 13 6 Placing a new filter paper in the unit 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 191 of 280 Chapter 13 13 1 2 Holding the handle end of the unit between your thumb and fingers pick up the dry retaining disc and place it over the new filter paper Refer to Fig 13 7 Gently press the disc down over the filter paper making sure that the disc s locking tabs fit properly into the groove in the unit and that the filter paper stays in position and is not damaged in any way Holding the handle end of the re assembled unit between your thumb and fingers place it back into position in the air inlet of the Monitor Screw it back into its mounting To do this turn the unit clockwise w
150. erval is full These measurement results are not lost just not displayed BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 124 of 280 Chapter 8 8 3 1 Numeric Window Properties Dialogue Box Interval index card BE6011 16 This index card is divided into several groups Measurement Sequence this option is only available when the Presentation software option is used You can select any one of the sequences recorded under the currently selected monitoring task When using the Online program a specified interval from the latest measurement can be displayed Time this is a toggle option You can select either this option or the measurement number option This option enables you to define the column length as a period of time Note there are slight variations here between the Online program and the Presentation program Online defining a time period here determines the time period for the length of the column This acts like a rolling window where the period for the column is always the same and the latest result will always be displayed at the bottom of the column Presentation defining the times and dates here enable you to select a time period which can stretch over several measurement sequences In fact the complete monitoring task can be displayed by defining the times and dates here Measurement Number this is a toggle option You can select either this
151. ervals of the monitor when it is not sampling continuously Sampling Interval a constant Ts Start 1 Start 2 Start 3 Start 4 Start 5 Ts Ts Ts Ts Yi Li Li Yi Z Measurement Cycle Finish 1 Finish 2 Finish 3 Finish 4 Continuous Sampling The Monitor is said to be sampling continuously when each measurement cycle is followed immediately by another similar measurement cycle see Fig 4 2 Fig 4 2 An illustration of continuous sampling Start 2 Start 3 Measurement Cycle Sampling lt T Intervals Finish 1 Finish 2 Finish 3 Finish 4 Monitoring Period The monitoring period is the time between the start of the first measurement cycle in a monitoring task and the finish of the final measurement cycle in a monitoring task The monitoring period can either be pre set by the user in which case the Monitor automatically stops monitoring after the monitoring period is over or not pre set in which case the Monitor will continue to monitor until the user stops the monitoring task manually see section 4 3 6 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 41 of 280 Chapter 4 4 2 Attaching the Sampling Tube and External Filter BE6011 16 Cut a short section of sampling tube of polytetrafluoroethylene Teflon tubing optional accessory Using Fig 4 3 and the instructions below attach one end of this tube to the air inlet st
152. es in the 1314 1 Remove the top lid NO Noy Mikin BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 16 of 280 Chapter 2 3 Use a screwdriver to remove the fuse holder 4 Remove the old fuse from the holder and replace it with a new Check that the fuse have the correct rating The fuse must be Slow blow T fuse with a rating of 2 5 A 250 VAC 5x20 mm UL approved Innova order number VFOO87A 5 Install the fuse holder and re assemble the 1314 again BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 17 of 280 Chapter 2 2 3 2 Checking changing the Fuses in the 1412 1 Turn the 1412 so that it stands on its back panel and remove the rubber shoes mounted on the four feet of its base plate Using Pozidrive screwdriver No 1 undo and completely remove the screws located under the rubber shoes which have just been removed Note these screws hold the upper and lower covers of the 1412 together If the screws are not completely undone you will not be able to remove the upper cover as explained in step 5 ae ST PEN n uot SES eee ae lt lt z Agaa Photoacoustic tislit Gas Adorit Undo the upper four screws holding the frame over the back panel of the 1412 using Pozidrive screwdriver No 0 BE6011 16 1314 Photoacoustic Multi gas Mo
153. ess 53 S1 S1 52 l The following screen picture appears SOUND VOLUME 1 PRESS ENTER TO CHANGE VALUE 3 To change the volume press Ei 4 Use the direction push buttons to enter the correct volume If you make a mistake press S1 to revert back to the original volume oF Press a to accept volume 6 Press to exit the set up function 5 4 3 Enabling Disabling Self Tests If you do not wish the Monitor to perform regular self tests including the hardware test on power up you can disable it 1 Press SET UP 53 61 51 53 REGULAR SELF TESTS BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 85 of 280 Chapter 5 Press S1 the Monitor no longer performs the hardware test as part of its self testing procedure during any kind of reset Press SET UP to exit the set up function 5 5 Alarm Relay Two alarm relays are built into the alarm relay socket on the back panel of the Monitor The function of the pins in this female connector are shown in Fig 5 2 The two alarm relays can be connected to a variety of either audio for example a siren and or visual for example a flashing light alarm systems and they are activated whenever a pre defined concentration alarm level of one or more of the gases being measured is exceeded Alarm signals are given by opening and closing the relay contacts Both relays are closed when the Monitor is switched of
154. et zero gas If only ONE filter A B C D E is installed in the carousel this display does not appear in the calibration set up PERFORM CROSS INTERFERENCE CALIBRATION NO YES using span gases of known concentration PERFORM GAS SPAN CALIBRATION NO YES CALIBRATE A WITH gas name appears here NO SINGLE POINT TWO POINT using span gas of known concentration GAS CONC PRESS ENTER TO CHANGE VALUE HIGH GAS CONC PRESS ENTER TO CHANGE VALUE This display ONLY appears if you have selected to perform CALIBRATE WATER VAPOUR FILTER zero point calibration of filters installed in positions A to E NO YES PERFORM WATER VAPOUR ZERO POINT CALIB NO YES using perfectly dry zero gas PERFORM WATER VAPOUR SPAN CALIBRATION NO WATER VAPOUR CONC End of the set up section of the calibration task PRESS ENTER TO CHANGE VALUE PERFORM PRACTICAL CALIBRATION TASK using zero gas containing an accurately known concentration NO YES of water vapour 900166 le To calculate the humidity gain factor for a filter during a humidity interference calibration it is necessary to have a BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 233 of 280 Chapter 14 14 9 2 BE6011 16 concentration offset factor for the filter and vice versa Note If a concentration offset factor is not stored in each of the filter banks whi
155. etween pins 4 amp 5 and this activates the attached alarm system INNOVA supplies a 6 pin DIN plug male with a locking collar JPO600 for connecting external alarm devices to the alarm relay Caution The DC voltage across the relay contacts must not exceed 25V The potential on the relay contacts must not be more than 25VDC above chassis potential as this will cause an excessive leakage current The current through the contacts must not exceed 100mA AC voltages must not be connected to the Alarm Relay socket Fig 5 2 Configuration of the pins in the alarm relay socket Alarm relay 1 Alarm Relay 2 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 87 of 280 Chapter 6 Chapter 6 Keying in Parameters July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 88 of 280 Chapter 6 6 1 Types of Parameters There are four types of parameters Numerical you are free to enter the desired values However there may in many instances be a range in which your values must lie These ranges can be found in the relevant sections of this manual Text you are able to type user defined text for example the names of the gases you are measuring and when using the PC the names of your databases The characters available to you when using the monitor on its own are shown in the table below Fig 6 1 The charac
156. f and when the Monitor is switched on This means that there is a direct electrical connection between pins 1 amp 2 and pins 4 amp 5 at all times except when the Monitor measures a gas concentration which is greater than the corresponding alarm limit for the gas When this concentration is measured the Monitor breaks the connection between pins 1 amp 2 or 4 amp 5 The monitor will furthermore activate the internal beeper and write the following message on the display WARNING ALARM LIMIT EXCEEDED The user can switch off the beeper and the message by pressing or push button on the frontpanel of the Monitor The alarm relays will continue being activated until either 1 all measured gas concentrations fall below their user defined alarm level s or 2 the monitoring task is stopped this automatically closes the alarm relays Alarm Relay 1 BE6011 16 Alarm Relay 1 correspond to High Alarm Limit 1 Whenever one or more gases exceed their alarm level s for high alarm limit 1 the Monitor breaks the electrical connection between pins 1 amp 2 and this activates the attached alarm system 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 86 of 280 Chapter 5 Alarm Relay 2 BE6011 16 Alarm Relay 2 correspond to High Alarm Limit 2 Whenever one or more gases exceed their alarm level s for high alarm limit 2 the Monitor breaks the electrical connection b
157. f the incorrect filter is selected press J and use A and W to scroll through the UA numbers until the correct UA number is displayed The procedure divides here PC users go to step 3 and Stand alone users go to step 4 3 Only the Filter UA numbers need to be checked changed using the monitor s push buttons All the other parameters are set when setting up the calibration using the Calibration program Press d and use V until the following text is displayed CHECK AND OR CHANGE SET UP FOR FILTER B NO YES Repeat steps 2 and 3 until the correct UA numbers have been entered for the fitted optical filters Then exit the Calibration Set up by pressing SET UP 4 Press Ei The following text appears on the screen FILTER BANK NUMBER 1 PRESS ENTER TO CHANGE VALUE 5 Press J and use A and to display the number of the filter bank 1 5 where you wish the Monitor to store the calibration factors calculated during the span calibration of this filter using this particular gas 6 Press Mi The following text appears on the screen BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 207 of 280 Chapter 14 BE6011 16 GAS AIS _ B PRESS ENTER TO CHANGE VALUE 7 Press and use the direction push buttons to enter the desired name 8 Press d to accept the name you have entered on the display screen The following text then appears
158. fore you start any practical exercise with the Monitor 4 1 1 Measurement Cycle BE6011 16 A description of a measurement cycle is given on page 2 of the Product Data Sheet see boxed in text and schematic diagram of the measurement system of the Monitor Measurement Cycle is the term used to describe everything that takes place in the Monitor from the time the pump starts to flush out the old gas sample in its analysis cell until the signal in the measurement chamber has been measured using the last relevant optical filter The time taken to complete a measurement cycle is dependent upon the following factors How many gases vapours are being measured this affects the number of optical filters which need to be used The sample integration time selected longer measurement times provide greater accuracy The flushing times selected for the measurement chamber and the tube as well as the length of the sampling tube attached to the Monitor s air inlet the longer the tube the more time is needed to flush it out between measurement cycles The cleanliness of air filters which filter the air drawn into the cell this affects the pumping time required to draw a fresh air sample into the analysis cell The degree of fluctuation in the concentration of the various gases measured in consecutive measurement cycles this affects the time required to adjust the gain of the amplifier attached to the microphones 1314 P
159. front of the monitor 1 Press SET UP S3 S1 S3 S1 The screen display now shows the following text SELECT BAUD RATE 9600 PRESS ENTER TO CHANGE VALUE If the baud rate displayed is incorrect press J and use A and VY to display the correct value Press again to store the selection If the baud rate displayed is correct then press W to continue to the next parameter Press S1 to select 1 STOP BIT Press S1 to select 7 DATA BITS Press S2 to select EVEN PARITY Press S3 to select LEASED LINE Press S3 to select HARD WIRED HANDSHAKE Press SET UP to exit the set up mode Press RESET and S1 in order that the new settings are enabled The monitor and the Gas Monitoring Software 7304 are now able to communicate together 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 22 of 280 Chapter 2 2 4 3 Checking Changing the Text line Terminator The Text line Terminator must be set using the push buttons on the front of the monitor Press SET UP S2 WS3 Press SET UP to exit the set up mode 2 4 4 Checking Changing the Data Log and Error Log Options The Data Log and Error Log must be set using the push buttons on the front of the monitor Press SET UP S3 S1 S1 S3 WS1 Sl Press SET UP to exit the set up mode 2 5 Setting up user Levels Press the function push button on the front of the Monitor This enables setting up 3 different user levels Level 1 Level 2 and
160. g 10 3 is displayed Fig 10 3 The Delete dialogue Task pe PA iC Calibration Task Chose 2 Click on the radio button to select the type of data to be deleted 3 Select the correct name from the list displayed and click on OK A warning appears to confirm that you do want to delete the selected database 4 Confirm the deletion by clicking on Yes Click on Close to exit the Delete dialogue 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 161 of 280 Chapter 10 10 5 BE6011 16 Export Databases This option enables you to export existing databases as comma delimited ASCII files The export function works from within the Presentation program The database to be exported must be open Note only the data displayed either in a numeric or graphic window is exported With the desired data displayed as described in section 8 8 1 Pull down the Task menu and click on Export 2 Use the standard Windows browser which appears on screen to define the destination for the exported data 3 Type in the desired file name All files have a TXT extension 4 Click on Save 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 162 of 280 Chapter 11 Chapter 11 Storage of Data in the Monitor s Memory July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoac
161. g mode by clicking on the correct radio button 19 If the parameters and their units displayed in the All Curves field are not correct click on the parameter you want to change If the parameter you want to display is not present in the All Curves field click on Add New or Insert Before 20 In the Single Curve Setup click in the Select Parameter field and select the desired name 21 Select the desired colour style and units 22 When all your selections are correct click on Add New The selected parameter is now displayed in the All Curves field This means it will be displayed on the graph with its value scale displayed on the right axis 23 Repeat steps 19 to 22 until all the components you want displayed on the right Y axis are in the All Curves list 24 Press OK to save the selections and exit the dialogue box The measured data will now be displayed on screen Note you can display the same parameter several times simultaneously with different units if desired 8 8 Displaying Measurement Results after Monitoring Using the Presentation program measurement data from monitoring tasks stored in the computers memory is displayed on screen The data can be displayed in both a graphic window and a numeric window simultaneously With the presentation program running 1 Pull down the Task menu Click on Open to view an existing database 2 In the database window click on the desired database name 3 Click on
162. g the first sampling interval T min C2 during the second sampling interval T2 min Cn during the n sampling interval T min see Fig 9 2 Suppose that you wished the 1412 to calculate the Time weighted average TWA over a period of time T min Fig 9 2 Illustration of a monitoring task Sampling Interval a constant Ts Start 1 Start 2 Start 3 Start 4 Start 5 Ts Ts Ts Ts 1 2 3 4 Measurement Cycle Finish 1 Finish 2 Finish 3 Finish 4 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 151 of 280 Chapter 9 The Time weighted average of these measurements over the averaging period of T min is calculated using the following mathematical equation i z c Cry linear average of all the measurements made during N the averaging period Where Cn constant concentration measured at time Tn N the total number of measurements performed during the averaging period T min In the situation where the total monitoring period is the same as the averaging period then the averaged value of the last performed measurement will be the same as the Mean Value u shown on the display screen see in Fig 9 1 9 2 Printed Monitoring Task Data BE6011 16 Fig 9 1 illustrates how data from a monitoring task is displayed on the Monitor s screen When monitoring task data appearing in Display Memory is printed out the same information appears but i
163. g the optical filter installed in position A of the filter carousel and water vapour If your Monitor has only been calibrated to measure with another filter for example the filter in position B then choose gas B to replace gas A in the following instructions The parameters which describe the monitoring task we shall set up are listed below 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 59 of 280 Chapter 4 BE6011 16 Stand alone Settings Monitoring Task Set up Number 1 Sampling Continuous Monitor for preset period No Compensate for Water Vapour Interference Yes Compensate for cross interference No Measure Gas A XXXXXX Yes Measure Gas B XXXXXX No Measure Water Vapour Yes Note flushing is set in Environmental Parameters section 4 4 3 and the S 1 T s are set up in the Filters setup section 14 3 3 1 Press SET UP S1 and then S1 This brings you into the Monitoring Task branch of the Set Up Tree where the following text is displayed MONITORING TASK SET UP NUMBER 1 PRESS ENTER TO CHANGE VALUE Up to 10 different monitoring tasks can be set up while operating the Monitor in Set up mode The parameters describing these tasks are automatically stored in the memory of the Monitor 2 If the number on the display is already 1 then press WV to accept the value If the number is not 1 a Press
164. g the self testing procedure At least one of the modules is not functioning as expected 1412 Photoacoustic Field Gas Monitor The analogue card is defective The air shunt valve is either defective or blocked The chopper motor is not working The optical sensor which checks the chopper s movement is not working The ventilation fan is defective The ambient air temperature is either too high or too low The temperature sensor is defective The infra red light source is defective The analogue card is defective A microphone s is defective The pump is defective The internal pneumatic system is not airtight Module hardware error Fault in communication cable Wrong module version Fault in the data configuration of the module LumaSense Technologies A S Page 278 of 280 Chapter 17 TEEE CONTROL TIMEOUT WARNING X ON X OFF HANDSHAKE CONFLICT TIMEOUT DEVICE NOT CONNECTED WARNING TIMEOUT DEVICE NOT READY BE6011 16 1314 Photoacoustic Multi gas Monitor The Monitor wishes to send data to a printer via IEEE interface but the Monitor is not the system controller The Monitor receives the handshake signal from the RS232 CTS clear to send line but it has not been set up to use this CTS line Monitor wishes to send data print data log or error log via the IEEE interface but there is no response from the device with the addres
165. has been marked by the User only 1412 o This symbol indicates that an operational error was detected during this measurement The accuracy of such a measurement cannot always be guaranteed 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 154 of 280 Chapter 9 w This symbol indicates that a warning was detected during this measurement The accuracy of such a measurement cannot always be guaranteed Gas Marks B The Monitor was incapable of calculating this gas concentration SF After this measurement the filter carousel was found to be out of alignment If the carousel was only slightly out of alignment then the accuracy of the measurement has not been affected The ac curacy of such a measurement cannot always be guaranteed A The gas concentration measured during this measurement cycle was found to exceed the user defined alarm limit for this gas 9 2 3 Symbols Used in Print outs of Measurement Data Displayed measurements marked with the COMMON MARKS o and W and the GAS MARKS A and F are printed out with an X symbol However any displayed measurements marked with the COMMON MARKS P and or E and the GAS MARK B are not printed out with these symbols These measurements are marked in a different way Common Marks The symbol P is replaced by the text 1314 1412 Restarted
166. hat 3 368 cycles will take 3 368 x 15 50 520s 14 hours If however this measurement cycle is only performed every 10 mins then data can be stored for 3 368 x 10 33 680 mins 23 days If a measurement cycle where 5 gases and water vapour are measured takes 60 s and if sampling is continuous this means that 1 730 cycles will take 1 730 x 60 103 800 s 28 8 hours If however this measurement cycle is only performed every 10 mins then data can be stored for 1 730 x 10 17 300 mins 12 days For further information regarding measurement cycles see chapter 4 The maximum time you can set a monitoring period to be is 7 days If you try to enter a greater number of days the Monitor will automatically change the period to 7 days However if you do not set a pre defined monitoring period the Monitor will just store as much data as possible before starting to overwrite the oldest stored measurement results 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 157 of 280 Chapter 10 Chapter 10 Database Administration for PC Use July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 158 of 280 Chapter 10 10 1 Introduction The Database Administration program enables you to backup restore and delete the databases you have stored on your hard disc This chapter also explains how to export data
167. herefore its data file W is not divided into different filter banks Each Filter Bank contains the following data 1 The name of the gas used during span calibration of the filter 2 The molecular weight of the gas used during span calibration 3 The alarm limits for the gas High Alarm Limit 1 High Alarm Limit 2 4 A Concentration offset factor obtained during zero point calibration of the filter 5 A Humidity gain factor obtained during an humidity interference calibration of the filter 6 A Conversion factor obtained during the span calibration of the filter with the gas named in point 1 above 7 Cross interference calibration factors obtained during cross interference calibration 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 165 of 280 Chapter 11 BE6011 16 Fig 11 1 Schematic diagram showing the structure of the Monitor s memory Source Memory 1 Calibration Factors 2 Optical filter 3 Other Set Up Parameters Set Up Parameters 5 6 amp amp fF Ey a EN ES FER cry Ey cy ry New active values factory set values A B a C ER D E Set Up of CALIBRATION TASK Optical Filter Parameters 1 Calibration Factors from Active Filter Banks 2 Optical filter 3 Other Set Up Parameters Set Up Parameters amo ENCAR URE A E es E E Ue E Ei New active values active values of other Set U Parameters 4 Background Memory 5 D
168. hese are displayed by clicking in the style field Select unit this enables you to display the gas or pressure with the desired units When you click in the select unit field the units available for this gas or pressure are displayed All Curves if a curve for a measured value is to be displayed in the graphic window then it must appear here Gases and the atmospheric pressures are entered in this field by first displaying their name in the Select Parameter field setting up the display parameters for the curve and then pressing the Add New soft key Note that if a parameter already appears here but you want to edit 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 122 of 280 Chapter 8 one or more of the display parameters then you must remove the existing parameter and add it with changed display parameters Soft keys these three keys are used to edit the names in the All curves list Add New if this is pressed after the appearance of a gas and the atmospheric pressure has been defined then the gas is added to the end of the list of gases already displayed Insert Before this puts the selected parameter at the top of the list Remove this enables you to remove a curve name resulting in this curve not being displayed Note the fastest way to set type Y axis in the graphic window is when the sequence settings are defined open a new graphic window All the selected p
169. hich you want to measure is from 333 times to 10 000 times the detection limit With our general guidelines you re not able to decide whether you have to perform a single or two point calibration Therefore we advise you to perform the following test 1 Perform a single point calibration with a low concentration of the gas Use 10 of the highest expected concentration level In this case use 300 ppm 1000 times the detection limit 2 Perform a measurement with a high concentration of the gas Use for example 90 of the highest expected concentration level In this case use 2700 ppm If the measured gas concentration differs by more than 5 from the real concentration then a two point calibration with 2 gas concentrations is recommended In the example in Fig 14 20b we have measured 2400 ppm with 2 700 ppm gas This gives an error of 11 and an even greater error at the highest concentration level 14 11 1 Setting up a Span Calibration PC Use BE6011 16 If the span gas used during a span calibration task absorbs any of the light from the other installed optical filters then it is advisable to perform a cross interference calibration This means that during Span calibration the signal in the cell is not only measured with the water vapour filter and the filter being span calibrated but is also measured with all the other installed optical filters Note that cross interference calibration cannot be performed alone it h
170. hotoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 39 of 280 Chapter 4 4 1 2 Table 4 1 gives some indication to the measurement times depending on the number of gases measured and the measurement times selected However these times may vary from one measurement cycle to another due to the cleanliness of the filters and the degree of fluctuation in the concentration of the various gases Table 4 1 Approximate measurement times Monitor Setup Volume of Air S I T Normal 5s One gas 25s 5 gases water 60 5s SIT Low Noise 140 cm sample 20s 5 gases water 150s Flushing Auto tube 1m S 1 T Fast 1s One gas 13s Flushing 20cm sample 5 gases water Chamber 4s Tube 275S OFF Monitoring Task A monitoring task consists of a series of similar measurement cycles These cycles can either be repeated at regular intervals or be continuous Sampling Interval BE6011 16 The sampling interval is a measure of the time between the start of one measurement cycle and the start of the following measurement cycle When the Monitor is not sampling continuously the sampling interval has to be defined by the user and is a fixed period of time see Fig 4 1 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 40 of 280 Chapter 4 Fig 4 1 An illustration of the fixed sampling int
171. ibrate the water vapour filter you must zero point calibrate all the other installed optical filters The concentration offset factors calculated during zero point calibration of the filter A to E will be stored in the filter banks those active during calibration Check therefore that you make the relevant filter banks active for these filters before calibrating them This is discussed in more detail in section 14 3 3 The procedure for setting up a zero point calibration of the water vapour filter is as follows 1 Press 53 S3 S1 then the following text will be displayed PERFORM ZERO POINT CALIBRATION NO YES 2 Follow the set up of a zero point calibration of the water vapour filter by following the black arrows in the schematic diagram Shown in Fig 14 25 The following text will appear ZERO POINT CALIB CONNECT CLEAN WET AIR AND PRESS ENTER WHEN READY 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 251 of 280 Chapter 14 Fig 14 25 Schematic diagram showing how to set up a zero point calibration task for the water vapour filter follow the arrows PERFORM ZERO POINT CALIBRATION NO YES using dry zero gas PERFORM HUM INTERFERENCE CALIBRATION NO YES using wet zero gas If only ONE filter A B C D E is installed in the carousel this display does not appear in the calibration set up PERFORM CROSS INTERFERENCE CA
172. ibration Task Enter description Calibration Gas M onitor 5e ri ial Protol BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 144 of 280 Chapter 8 3 Pull down the Task menu and select Print Current Calibration Fig 8 19 The Task dialogue window for printing Current Calibration amp Calibration Calibration1 Task Sequence Values Bank Edit View Window About New Chen aii e EN lA eaaa lal wal TN c af lel e a aa Close z al Communication Font T Temperature C Print Ctrl P Print Preview Print Setup Print Current Calibration Print the connected instruments calibration Nm PA 4 Now a time glass appears on the PC screen while the calibration data is fetched from the Monitor Note this is a time consuming operation 5 After having fetched the calibration data from the monitor a Print window is displayed It is then possible to change the print settings 6 Select OK to make a print out of the actual calibration data stored in the Monitor BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 145 of 280 Chapter 9 Chapter 9 Viewing Measurement Data Using the Monitor July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 146 of 280 Chapter 9 9
173. ibration set up PERFORM CROSS INTERFERENCE CALIBRATION All installed filters A to E will be calibrated for cross interference from the other span gases used during span calibration NO YES using span gases of known concentration PERFORM GAS SPAN CALIBRATION CALIBRATE A WITH gas name appears here NO YES NO TWO POINT SINGLE POINT using span gas of known concentration GAS CONC PRESS ENTER TO CHANGE VALUE HIGH GAS CONC PRESS ENTER TO CHANGE VALUE This display ONLY appears if you have selected to perform zero point calibration of filters installed in positions A to E CALIBRATE WATER VAPOUR FILTER NO YES PERFORM WATER VAPOUR ZERO POINT CALIB NO YES using perfectly dry zero gas PERFORM WATER VAPOUR SPAN CALIBRATION NO YES WATER VAPOUR CONC PRESS ENTER TO CHANGE VALUE PERFORM PRACTICAL CALIBRATION TASK NO YES using zero gas containing an accurately known concentration of water vapour 900172 Before setting up a calibration task make sure that the filter banks you make active for the filters which have already been calibrated only contain calibration factors which need to be up dated In this way you can prevent your original calibration factors being overwritten by the new ones To illustrate this imagine that filters 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 223 of 280 le Chapter 14
174. ide an overview of the monitoring task set up parameters Start of the Monitoring Task The Display Memory has a finite size and therefore if a monitoring task runs for a long period of time it will fill up all available memory Space and data collected after the memory has been filled up will start to overwrite the data collected during the start of the monitoring task Some measurement results will therefore be lost from the memory In such a situation the date and time appearing after MONITORING TASK STARTED will not be the same as the first date and time displayed on the screen labelled ff in Fig 9 1 Using the direction push buttons and the average push button only valid for 1412 users can scroll through each page of stored data and in addition average gas concentrations over a pre defined averaging period The functions of the push buttons are described fully in Chapter 5 and can be summarized as follows only valid for type 1412 AVERAGE When this push button is pressed the 1412 will average the measurement results which are stored in its Display Memory over the period of time Averaging Period specified in the FORMAT branch of the Set up tree see section 7 2 When the averaging function is operative the LED above the push button is lit only averaged measurement results are shown on the 1412 s display These averaged measurements may also be printed out while the averaging function is operative It is import
175. idity pressure temperature gas concentration and length of tubing 4 Click in the Normalization Temp field and select one of the three temperatures 0 20 or 25 C Note these temperature values change depending on the temperature units selected i e C F and K Normalization Temp Values 0 C 20 C and 25 C 32 F 68 F and 77 F 273K 293K and 298K 5 Click OK BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 44 of 280 Chapter 4 4 3 3 BE6011 16 Setting up a Monitoring Task The optical filters in the Monitor have to be calibrated before they can be used to measure gas concentrations The user can only set up a monitoring task using those optical filters which have been installed In this example we have chosen to measure gas A that is to measure gas A s concentration using the optical filter installed in position A of the filter carousel and water vapour If your Monitor has only been calibrated to measure with another filter for example the filter in position B then choose gas B to replace gas A in the following instructions The parameters which describe the monitoring task we shall set up are listed below Online Settings Sampling index card Monitoring Task name Area 1 Sampling Mode Continuous Flushing Auto Tube Length 1m Gas Monitor Display Instantaneous i e no tick in check box Gas index card
176. ies A S 1412 Photoacoustic Field Gas Monitor Page 256 of 280 Chapter 14 The procedure for setting up a combined zero point and humidity interference calibration task is as follows Fig 14 27 Schematic diagram showing how to set up a combined zero point and humidity interference calibration task follow the arrows PERFORM ZERO POINT CALIBRATION NO YES using dry zero gas PERFORM HUM INTERFERENCE CALIBRATION NO YES using wet zero gas If only ONE filter A B C D E is installed in the carousel this display does not appear in the calibration set up PERFORM CROSS INTERFERENCE CALIBRATION NO YES using span gases of known concentration PERFORM GAS SPAN CALIBRATION NO YES using span gas of known concentration GAS CONC PRESS ENTER TO CHANGE VALUE CALIBRATE WATER VAPOUR FILTER NO YES End of the set up section of the calibration task PERFORM PRACTICAL CALIBRATION TASK NO YES BE6011 16 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor CALIBRATE A WITH gas name appears here NO SINGLE POINT TWO POINT HIGH GAS CONC PRESS ENTER TO CHANGE VALUE This display ONLY appears if you have selected to perform zero point calibration of filters installed in positions A to E PERFORM WATER VAPOUR ZERO POINT CALIB NO YES PERFORM WATER VAPOUR SPAN CALIBRATION NO WATER VAPOUR CONC PRESS ENTER TO CHANGE VALUE using z
177. ight from any of the other installed optical filters it will interfere with the signal measured when the other optical filters are used If this is the case it is necessary to perform a cross compensation calibration of this filter This involves taking measurements with all the other installed optical filters while the span calibration is performed The following sections explain what a calibration is and why it is necessary Some of the expressions used in this chapter are also explained to help you understand the process A zero gas is a gas which does not absorb infra red light e g pure Nitrogen BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 197 of 280 Chapter 14 14 2 What ts Calibration and Why is it Necessary In order to understand calibration it is necessary to look at what happens inside the analysis cell during a gas concentration measurement A sample of air is drawn into the cell The cell is then sealed off and light is sent from the infra red source via a chopper to pulsate it through an optical filter The optical filter only transmits light in a defined wavelength range and this light enters the cell If there is a gas in the cell which absorbs light of this wavelength a pressure wave is created and this is measured by the microphones mounted within the cell The greater the concentration of the absorbing gas in the cell the greater the
178. ime the filter is calibrated For example Filter Bank No 1 for storage of the calibration factors for sulphur hexafluoride Filter Bank No 2 for acetic acid and Filter Bank No 3 for vinyl chloride After calibration of the filter UA 0976 the Monitor is able to accurately monitor any of the three gases mentioned but only one of these gases during any particular monitoring task By selecting the correct FILTER BANK NO in the set up of the Monitor before a monitoring task is started the user determines which calibration factors will be used during the task and therefore the kind of gas monitored by filter A For example when Filter Bank No 3 is entered in the active set up for filter UA 0976 in position A the Monitor reads the calibration factors from file A3 into its Working Memory so that the concentration of vinyl chloride can be calculated during the monitoring task Block 2 Optical Filter Set up Parameters This block contains 3 of the 6 parameters which describe the optical filter installed in each position of the filter carousel UA number of the filter Filter bank number S I T information If any of the above listed parameters are changed in the active set up they are also automatically changed in the Source Memory Block 3 Other Set Up Parameters 11 1 3 BE6011 16 This block of data contains all set up parameters except the optical filter parameters Before leaving the facto
179. in factor Gas conversion factor for gas A2 Gas interference on filters np to Concentration offset factor Humidity gain factor Concentration offset factor Humidity gain factor Concentration offset factor Humidity gain factor Concentration offset factor Humidity gain factor Gas conversion factor for gas D1 Gas conversion factor for gas Cl Gas conversion factor for gas B1 Gas conversion factor for gas Al Gas interference on Gas interference on Bi filters A to C and Gas interference on filters B to En filters A an to DEN Gas interference on filters TART a D bi and E 1 E l 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor LumaSense Technologies A S Page 224 of 280 Chapter 14 Fig 14 15 Illustration of the calibration data stored in the filter banks of filters A to E after a zero point calibration task Concentration D offset factor Humidity gain factor Gas conversion factor Gas interference on filters FAUS BS Lt D ta and vpn Concentration offset factor Humidity gain factor Gas conversion Gas interference on filters A B t Bha and SRS Concentration Concentration Concentration Concentration offset factor offset factor offset factor offset factor Concentration offset factor Humidity gain factor Gas conversion factor for gas A2 Gas interference on filters B to E Concentration Concentration Concentration Conce
180. in mg m b By pressing S3 the gas concentrations which appear in the measurement results will be quoted in ppm Function Push buttons The order of these push buttons are the same as they are seen on the front of the monitor RESET By pressing this push button you can choose the type of reset the Monitor should perform For further details see section 5 3 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 77 of 280 Chapter 5 BE6011 16 LOCK This push button enables setting up three different password protected User Levels For further details see section 2 5 IMEASURE In this mode you are able to choose the type of measurement the Monitor should perform and decide when the measurement should start AVERAGE Only 1412 This push button allows you to average EVENT PRINT SET UP measurement data The lamp in this push button is lit when measurement data is being averaged You define the averaging times using the set up mode Only 1412 If an unusual or interesting event occurs during a measurement period you can mark the time such an event took place by pressing this push button Each event marker is given a serial number which can be used as a reference Events are marked on print outs of measurement data In this mode you are able to store measurement data in the Background memory of the monitor as well as recall or delete data from the Backgro
181. in the active filter bank of the filter installed to measure this gas 5 If you answer YES to PERFORM GAS SPAN CALIBRATION then you can choose 1 which of the installed filters you wish to span calibrate and 2 whether this calibration should be a single point or a two point span calibration The concentration conversion factor calculated during span calibration for a par ticular gas using a particular filter is stored in the filter bank no which is active during the calibration procedure Retaining Existing Calibration Factors When zero point humidity interference and _ cross interference calibrations are performed all the installed filters are calibrated In some case you may wish to keep the calibration factors already present in your monitor If this is the case use the following instructions 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 222 of 280 Chapter 14 BE6011 16 Fig 14 13 Schematic diagram showing the calibration task Set Up Tree general PERFORM ZERO POINT CALIBRATION All installed filters A to E will be zero point calibrated NO using dry zero gas PERFORM HUM INTERFERENCE CALIBRATION All installed filters A to E will be calibrated for interference from water vapour NO YES using wet zero gas If only ONE filter A B C D E is installed in the carousel this display does not appear in the cal
182. index card 14 15 16 17 18 Click on the Left Y axis index card In the Scaling group click on the Autoscale maximum and minimum radio push button In the Single Curve Set up click Select parameter field and select the gas name for Filter A Select the desired colour style and units When all your selections are correct click on Add The selected gas is now displayed in the All Curves field This means it will be displayed on the graph with its concentration scale on the left axis Right Y axis index card 19 20 21 22 BE6011 16 Click on the Right Y axis index card In the Scaling group click on the Autoscale maximum and minimum radio push button In the Single Curve Set up click in the Select parameter field and select the Water Filter Select the desired colour style and units 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 52 of 280 Chapter 4 23 When all your selections are correct click on Add The selected gas is now displayed in the All curves field This means it will be displayed on the graph with its concentration scale displayed on the right axis Events index card 4 3 8 24 Click on the Events index card 25 Click in all event check boxes to enable all the event markers if there are any to be displayed The event markers appear as vertical lines with a letter at the end of them S
183. ion of filters installed in positions A to E CALIBRATE WATER VAPOUR FILTER NO YES PERFORM WATER VAPOUR ZERO POINT CALIB NO YES PERFORM WATER VAPOUR SPAN CALIBRATION NO WATER VAPOUR CONC End of the set up section of the calibration task PRESS ENTER TO CHANGE VALUE using zero gas containing an accurately known concentration PERFORM PRACTICAL CALIBRATION TASK of water vapour NO YES 900167_ le BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 255 of 280 Chapter 14 14 12 4 Performing a Span Calibration of the Water vapour 14 13 BE6011 16 Filter Section 14 4 1 describes a good method of producing water vapour of known concentration The directions for performing a span calibration of water vapour filter are similar to those for performing a humidity interference calibration of the other installed filters is as described in section 14 9 2 In both calibration tasks the signal in the cell is measured when a supply of zero gas containing a constant concentration of water vapour is attached to the Monitor There are however two differences 1 During a humidity interference calibration the signal is measured using each of the installed filters including the water vapour filter whereas during the span calibration of the water vapour filter the signal is only measured with the water vapour filter 2 During a humidity
184. isplay Memory data copied from storage of Display Memory measurement results Working Memory 89181le Before calibrating a particular filter one of the filter s banks is made active by operating the Monitor in Set Up mode and entering the chosen filter bank number for the filter being calibrated The filter bank No which is made active before the filter is calibrated is the filter bank where the Monitor will store calibration factors calculated during calibration This means that the user is able to calibrate any particular optical filter to measure up to five different gases If a particular filter is to measure more than one gas it is therefore necessary to span calibrate it with each of the gases it is to measure For example if you refer to the Gas Detection Limits wall chart you will see that the filter UA 0976 can be used to meas ure the following three gases 1 Sulphur hexafluoride 2 Acetic acid 3 Vinyl chloride Suppose that filter UA 0976 is installed in position A of the filter carousel to measure each of the above gases Before this filter is calibrated the Monitor has to be told where to store the calibration 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 166 of 280 Chapter 11 factors which are calculated during the calibration procedure This is done by selecting a FILTER BANK NO in the active set up for Filter A each t
185. isplay ONLY appears if you have selected to perform zero point calibration of filters installed in positions A to E PERFORM WATER VAPOUR ZERO POINT CALIB NO YES using perfectly dry zero gas gp y dry g PERFORM WATER VAPOUR SPAN CALIBRATION NO WATER VAPOUR CONC PRESS ENTER TO CHANGE VALUE using zero gas containing an accurately known concentration of water vapour 900234 le LumaSense Technologies A S Page 245 of 280 Chapter 14 BE6011 16 Fig 14 23 Schematic diagram showing how to set up a combined cross interference and span calibration task follow the arrows PERFORM ZERO POINT CALIBRATION NO YES using dry zero gas PERFORM HUM INTERFERENCE CALIBRATION NO YES using wet zero gas If only ONE filter A B C D E is installed in the carousel this display does not appear in the calibration set up PERFORM CROSS INTERFERENCE CALIBRATION NO YES using span gases of known concentration PERFORM GAS SPAN CALIBRATION NO YES CALIBRATE A WITH gas name appears here NO SINGLE POINT TWO POINT using span gas of known concentration EITHER GAS CONC PRESS ENTER TO CHANGE VALUE HIGH GAS CONC PRESS ENTER TO CHANGE VALUE This display ONLY appears if you have selected to perform CALIBRATE WATER VAPOUR FILTER zero point calibration of filters installed in positions A to E NO YES PERFORM WATER VAPOUR ZERO POINT CALIB
186. it has been fully calibrated see Chapter 14 for details 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 171 of 280 Chapter 11 11 1 6 BE6011 16 Effect of a Full Reset on the Monitor s Memory A FULL RESET of the Monitor changes the data stored in its Working Memory as follows 1 All data stored in Display Memory and Background Memory is deleted Values of the Optical Filter Set up Parameters in Block 2 of The Source Memory are copied into Block 2 of the Working Memory The active values of the other set up parameters in Block 3 of the Working Memory are replaced by the factory set values defined in Block 3 of the Source Memory The active values of the Optical Filter Parameters in Block 2 of the Working Memory are replaced by the values of the optical filter parameters in Block 2 of the Source Memory Note that under normal circumstances the data in these blocks is the same However to ensure that the data in these blocks is the same data is read from Source memory into the Working Memory during a FULL RESET of the Monitor Those Filter Bank Nos which have been made active determine the calibration factors which will be found in Block 1 of Working Memory after a FULL RESET of the Monitor If for example the active Filter Bank No chosen for all the filters A to E is no 1 then only the calibration data in files A 1 B 1 C 1 D 1
187. ite easy to see now The information in the Cursor Values dialogue changes When using the Online program the cursors can be used to look at any of the data more closely But note that as soon as a new measurement is available from the monitor this will be displayed disturbing your zoomed in view In this case it is more convenient to use the Presentation program simultaneously Fig 8 4 Cursor Value Window using two cursors Ep Cursor Yalues Graphic Window 1 m Left Cursor 106 Aight Cursor 131 No of Samples 6 Minimum Average Masimum Std Dev Carbon monoxide ppm 0 210 0 033 0 350 0 124 TVOC ref Methane ppr 2 15 2 300 2 525 0 111 Water Yapour T dew C 6 084 b 2rh 6 537 0 097 Left Cursor Position this can be given either as a time and date or a measurement number depending on what was defined in the Window Properties dialogue Right Cursor Position this can be given as either a time and date or a measurement number depending on what was defined in the Window Properties dialogue The displayed parameters and their display units are listed on the left hand side of the dialogue Opposite each parameter are several values under the headings Minimum this shows the minimum value for each parameter between the cursors 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 129 of 280 Chapter 8 Average this gives the linear average value fo
188. ith filter A e Span Calibration performed if a date appears here and e Conversion factor a number appears here then this filter has been properly span calibrated with the named gas The filter bank containing this calibration data is the filter bank which has to be made active when filter A is to measure this named gas However if the Gas name is given as Gas UA number then the filter has only been checked to see that it is functioning correctly it has not been span calibrated to measure the gas you wish to measure Under the heading GENERAL INFORMATION FOR WATER FILTER ACTIVE CALIBRATION DATA check the following information a Zero point Calibration performed if a date appears here this is the last time the water vapour filter was zero point calibrated 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 204 of 280 Chapter 14 b Concentration offset factor if a number appears here this means that the water vapour filter has been zero point calibrated c Span Calibration performed if a date year month day appears here this is the last time span calibration of the water vapour filter was performed d Conversion Factor if a number appears here this means that the water vapour filter has been span calibrated When the water vapour filter has been zero point calibrated and span calibrated it is able to measure the absolute con
189. ith your fingers to tighten until it is in position Fig 13 7 Refitting the retaining disc Changing the Filter paper in the External Air filtration Unit BE6011 16 While you do this we recommend that you wear clean rubber gloves Tools and equipment required Acetone analytically pure Spare fine filter paper DS 0759 Tweezers QA 0164 Cotton buds Clean rubber gloves To change the filter paper Switch off the Monitor Put a rubber glove on the hand which is to hold the parts of the unit Pull the external fine air filtration unit off the end of the Teflon sampling tube Hold the stub end of the external air filter unit between your thumb and fingers and unscrew the coarse air filter from the end of the unit Refer to Fig 13 3 Remove the used old filter paper and the retaining disc from the unit using the tweezers Refer to Fig 13 8 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 192 of 280 Chapter 13 BE6011 16 Fig 13 8 The parts of the external air filtration unit UD 5023 eee ne ey et me iY N Moisten a cotton bud with pure acetone and use it to clean the surfaces of the unit the retaining disc and the coarse air filter Refer to Fig 13 8 Place the stub end of the unit downwards on a clean dry surface the coarse air filter with its screw end downwards on a clean dry surface and rest the retaining disc against it Caution
190. k menu Click on Open and the Open Measurement Task dialogue is displayed In the select Task box select the desired name Click on OK and a graphic window is displayed If you want a numeric window pull down the Window menu and click on New Numeric Window A numeric window is displayed Sampling index card BE6011 16 a Click in the Measurement Sequence field and select the desired sequence name Click on the Time radio push button The time period for the measurement sequence is displayed in the From and To fields Ensure that the Average check box in the Sample Type group is not ticked If you have opened a numeric window go to step 8 If you have opened a graphic window go to step 14 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 51 of 280 Chapter 4 Column index card 8 2 10 11 12 13 Click on the Column index card In the Single Column Set up group click in the Select parameter field and select the gas name for Filter A Click in the Select unit field and select the desired units When all your selections are correct click on Add new The selected gas is now displayed in the All Columns field This means it will be displayed in the numeric window Repeat steps 9 to 11 selecting the Water filter Press OK to save selections and exit the dialogue box To display the Event markers go to step 24 Left Y axis
191. l Vtota Measured with filter A can be compensated for any signal produced by water vapour s absorption of light from filter A Vu20 during the span calibration task This means that your Span gas does not have to be perfectly dry As the filter has already been zero point calibrated the cell noise Vofrse when filter A is used is known and therefore the span calibration curve can be drawn see Fig 14 19 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 237 of 280 Chapter 14 Fig 14 19 Curve showing a linear span calibration curve Single point Span Calibration of Filter A using span gas A p Total signal in the cell V offset Gas Concentration 892010e Choosing a filter bank BE6011 16 If a filter e g A has already been calibrated to measure a gas e g A1 and you wish to calibrate with gas Al again then select the filter bank containing the gas conversion factor for gas Al Online users can do this when downloading the calibration factors Stand alone users should do this before setting up and performing the span calibration task The gas conversion factor calculated during the Span calibration will then just overwrite the gas conversion factor calculated during the previous span calibration of the filter with this gas If you wish to span calibrate a filter to measure more than one gas then select a new filter b
192. l the following text is displayed GAS A HIGH ALARM LIMIT 1 mg m PRESS ENTER TO CHANGE VALUE 4 Use the direction push buttons to set the alarm concentration If you do not wish to activate the alarm function for a particular gas select the DEFAULT This will blank out the alarm level value for the gas and deactivate the alarm for that gas BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 109 of 280 Chapter 7 GAS A HIGH ALARM LIMIT 2 mg m PRESS ENTER TO CHANGE VALUE 5 Use the direction push buttons to set the alarm concentration If you do not wish to activate the alarm function for a particular gas select the DEFAULT This will blank out the alarm level value for the gas and deactivate the alarm for that gas 6 Repeat steps 2 to 4 to set the alarms for the other filters 7 Press SET UP to exit the alarm set up 7 4 Starting a Monitoring Task 7 4 1 BE6011 16 Monitoring tasks can be started in two ways They can be started immediately or set to start at a pre set time The duration of the monitoring sequence can also be determined A monitoring task can continue until it is stopped manually or at a pre set time When using the PC and the Online option there are no limits to the duration of a monitoring task However if the measurement results are being stored in the monitor s memory the duration of the monitoring task should b
193. laced on your desktop for easy access to the programs 2 2 Connecting the Monitor to the PC The monitor comes complete with a 9 pin to 25 pin null modem RS 232 interface cable If your PC has a 25 pin serial port an adapter can be fitted to enable the supplied cable to be used 2 2 1 Fitting the RS 232 Cable Ensure that both the monitor and the PC are switched off at the mains Failure to do so may result in your equipment being damaged Locate the serial port at the back of the PC refer to your PC manual if in doubt Push the connector on the RS 232 cable on to the serial port socket and secure it firmly using the securing screws Locate the output labelled RS 232 at the back of the Monitor Push the connector at the other end of the RS 232 cable on to this socket and secure it firmly using the securing screws Turn on the PC Wait for Windows to start up The instruments can be turned on at the mains now 2 3 Checking changing the Fuses in the Monitor BE6011 16 Unplug the Monitor from the mains power supply and pull out the plug in the AC Mains socket of the Monitor If the fuses in the Monitor are blown it can indicate a serious fault in the instrument therefore it is advisable to contact your Innova service representative before changing the fuse 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 15 of 280 Chapter 2 2 3 1 Checking changing the Fus
194. lay Memory can be copied into and stored in the Monitor s Background Memory This operation is described in section 11 2 cy Press Sil Immediate Start If you selected an immediate start the following text appears on the screen MEASUREMENT IN PROGRESS RESULTS NOT YET AVAILABLE 4 When the first measurement cycle is complete the Monitor will automatically display the results and update them every time a new measurement cycle is completed An example is shown below A 4 52 E 01 DE This display gives the overview of the gas vapour concentration last measured in this case the concentration of gas A and humidity of the water vapour are in the units that were selected that is mg m for gas A and Tdew for water vapour see section 4 3 2 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 112 of 280 Chapter 7 Delayed Start If you selected a delayed start the following text is displayed START TIME 1 00 00 PRESS ENTER TO CHANGE VALUE Press The following text is displayed ACTIVE TASK MONITORING TASK NUMBER 1 TASK WILL START AT 10 16 25 TIME 16 25 The time shown in the TIME field is the current time The measurement task will start at 10 16 25 At 16 25 the 10 of the Current month When the monitoring task starts the monitor s screen will change and display the same messages as those displayed when a monitoring task st
195. lick on Add New or Insert Before 22 In the Single Curve Setup click in the Select Parameter field and select the desired name 23 Select the desired colour style and units 24 Repeat steps 21 to 23 until all the parameters you want displayed on the right Y axis are in the All Curves list Events index card 25 Click on the Events index card 26 Click in the desired check boxes to display the different event markers 27 Press OK to save selection and exit the dialogue box Although the measurement data may be displayed on screen you can change any of the parameters including the averaging value in the Window Properties dialogue whenever you please without losing any data in the process BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 139 of 280 Chapter 8 8 9 Printing Measurement Results When using the online or presentation program it is possible to make a print out of the measured data 8 9 1 Printing the numeric graphic or cursor values window 1 Select the specific window by clicking on it while pointing at it with the cursor 2 Pull down the Task menu 3 Select print see figure 8 11 Fig 8 11 The Task dialogue for a print of the numeric window Online onlinetst_protoO1 z Afe ojx Task Sequence Edit View Window About New Ctrl h ty TE al ql Es E l Open Cr Close aan lolx Communi
196. ll data in the Monitor is stored as raw data The different units which you can select here enable you to enter gas concentrations and lengths and to display temperatures and pressures in units that you are comfortable with These units are also used to present measurement data in a form that is most convenient for you The Monitor can display gas concentrations either in absolute units of mg m3 unit that is dependent on a particular temperature termed the normalization temperature or in units of parts per million by volume which is independent of the temperature of the gas You can inform the Monitor about the units you intend to use for example the length of the sampling tube attached to the Monitor s inlet in metres of feet the normalization temperature C of F or 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 43 of 280 Chapter 4 K the units of atmospheric pressure kPa or mBar or mmHg and unit for humidity ppm or Tgew or KPa or mg m With the Monitor and the PC connected properly as described in section 2 2 and section 2 5 and the Gas Monitoring Software already running Click on Online to start this option Pull down the Task menu Click on Units and the Units dialogue is displayed see Fig 4 4 Fig 4 4 The Units dialogue ay 18 x os e Sl El olds Clty A gist el Ela 2 mmf 3 Click on the desired units for hum
197. low SIGNIFICANT CHANGE IN CALIB FACTORS 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 271 of 280 Chapter 16 BE6011 16 This message is associated with the span calibration of one or more of the filters The above message indicates that the Conversion factor calculated during span calibration of a particular filter deviates more than 15 from the Conversion factor calculated during the last span calibration of this filter If you are absolutely sure that the previous span calibration of this filter was correctly performed then this message could indicate 1 That you have entered the wrong concentration for the span gas in the span calibration set up 2 That the concentration of your span gas is not correctly quoted on its Analysis Certificate 3 That there is a leak in the tubing fittings in your calibration equipment which alters the concentration of the span gas reaching the cell NO CROSS INTERFERENCE FOUND This message is associated with a combined cross interference and Span calibration task The above message indicates that the signal measured with a particular filter for example A when a certain gas for example B was in the cell is less than 1 5uV This indicates that there is effectively no signal contribution from gas B when filter A is used i e gas B does not interfere with measurements made with filte
198. measured signal for water vapour s interference 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 200 of 280 Chapter 14 Fig 14 3 Schematic diagram showing the absorption spectrum of gas A and gas B The dashed lines represent the half power bandwidths of the filters used to measure each gas Gas A s absorption Filter A spectrum as p most sensitive filter absorption peak Absorbance gt I i i strongest l l Interface l from Gas A l when filter B l is used Wavelength in m gt Gas B s absorption spectrum Filter B l Lost sensitive filter strongest D g l absorption peak Interface from Gas B when filter A is used Absorbance gt t Wavelength in m 892013 1e Presence of Other Interferents In many measurement situations water vapour is not likely to be the only interferent present Suppose that you have installed an optical filter A to measure a gas A but another gas B is normally found in the ambient air you are monitoring If gas B absorbs some light from filter A it will interfere with the signal produced by gas A s absorption of this light This is illustrated by the lower absorption spectrum in Fig 14 3 Interference from Gas B when filter A is used This interference is termed cross interference How is this interference measured An optical fil
199. n several measurement sequences under the same monitoring task name can be displayed at the same time Rolling Average this enables you to define what sample values are displayed If the check box in this field is not ticked default setting then individual sample concentration values are displayed However if the check box is ticked an averaging interval must be entered Rolling Average the individual sample values are averaged and displayed on the graph By defining the averaging time you can display defined Time weighted Average TWA values This can be of use if you need to know 8 hour National Occupational Exposure Limits or Short Term Exposure Limits STEL averaged over 15 minutes The formulae used to calculate the average values are described in detail in section 8 4 The units of the value defined here change depending on which radio button was selected time or measurement number Left Y axis index card BE6011 16 It is here you define the scale of the left Y axis which curves are allocated to this axis and their appearance Scaling this enables you to set the scale of this axis There are three possibilities 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 121 of 280 Chapter 8 BE6011 16 Autoscale maximum and minimum by selecting this option the measurement data will always be displayed The scale will start just below the minimum value and end just
200. n data It is very important that you store these data in your Gas Monitoring Software 7304 which you just have installed Please store the data before using the Gas Monitoring Software 7304 otherwise the storing procedure will cause overwriting of existing calibration data Storing of calibration data Assume that you have ordered a calibration of your monitor which have 2 optical filters installed UAO986 and UA0973 For these two filters you have ordered calibration with Acetaldehyde and Ammonia Filter A UA0986 Acetaldehyde Filter B UA0973 Ammonia After calibration the calibration data is stored in a calibration task with the Gas Monitoring Software 7304 and the data is copied to a diskette This calibration task is named as Serial No CAL ex 710 002 CAL Single calibration task have been ordered Please insert your backup CD in the CD ROM drive Start the Database Administration program i Database Administration Backup atask or filter Info i Restore atask or filter Restore E Delete an existing Delete ace Backup filter info Full backup and alltasks Close Select Restore and select the respective CD ROM drive Following window appears 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 27 of 280 Chapter 2 select backupftile Look in E3 CD Drive D Fj File name SYSTEM S B Files of type Backup files mea cal syb
201. n the IEEE 488 interface bus REMEMBER to partially reset your Monitor if any of the above parameters have been changed See the WARNING at the beginning of section 12 3 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 183 of 280 Chapter 12 From the top of the Communication branch of the Set up Tree SELECT COMMUNICATION SET UP BRANCH RS 232 IEEE 488 CONNECTIONS 1 Press 52 2 Use the direction push buttons to select the correct values for the parameters If you are in doubt about any of the settings refer to your printer manual 3 When you have been through all the parameters the monitor returns to the top of the Communication branch 4 Press S3 S3 and then SET UP This selects the IEEE port as the communication port for the printer 5 Press RESET and S1 to partially reset your Monitor 12 4 Additional Parameters Required The other output parameters which determine the format of print outs are shown in Table 12 4 together with available choices and factory default values Table 12 4 Parameters which determine the format of print outs from the monitor Display Text Acceptable Default Values Value PRINT EACH GAS GAS N and or Air Pressure SELECT TEXT LINE TERMINATOR CR LF CR LF CR LF If one chooses to PRINT EACH GAS then all gases which have been measured will be printed out If one does not choose to PRINT EACH GAS then the use
202. n the signal Vhigh is measured when the gas concentration Chigh is in the cell and the signal Viow is 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 268 of 280 Chapter 16 measured when the gas concentration Ciow is in the cell see section 14 11 Fig 16 1 Curve illustrating the two points measured during a two point span calibration task V lies on this line Gas Concentration 90017le GAS X LOW MEAS gt HIGH MEAS This message indicates that the signal measured in the cell when the gas concentration was low is found to be greater than the signal when the gas concentration was high The above message could indicate that the span gas concentrations were incorrectly entered when the task was set up that is the entered low gas concentration was actually greater than the entered high gas concentration Alternatively it could indicate that the concentration of the gas supplied to the Monitor during the measurement of Viow was actually the high concentration Chigh and vice versa The signals Vnhigh and Viow Nave to be corrected for water vapour interference and cell noise that is Vhigh Voftset VH20 Vh and Viow a V offset VH20 Vi These two points Vp Crn and Vi C can then be plotted on a graph see Fig 16 1 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field G
203. nce this option is only available when the Presentation software option is used You can select any one of the sequences recorded under the currently selected monitoring task 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 120 of 280 Chapter 8 Time this is a toggle option You can select either this option or the measurement number option This option enables you to define the X axis aS a period of time Note there are slight variations here between the Online program and the Presentation program Online defining a time period here determines the time period for the length of the X axis This acts like a rolling window where the period for the X axis is always the same and the latest measurement result will always be displayed at the right hand end of the X axis Presentation defining the times and dates here enable you to select a time period which can stretch over several measurement sequences In fact the complete monitoring task can be displayed by defining the times and dates here Measurement Number this is a toggle option You can select either this option or the Time option Like the time option by defining a value here you define the length of the X axis defined as a number of measurements For the Online program the X axis works like a rolling window where the latest measurement is always displayed at the right hand end of the axis For the presentation optio
204. nce provided that a selective optical filter is installed in the monitor to measure the concentration of interferent gas present Gas Monitor Display PC use Averaging Period 1412 stand alone use this enables you to decide if instantaneous values or averaged values are displayed on the gas monitors screen If average values are desired then the example below illustrates how the values are calculated and displayed Let us Suppose that the Monitor has been taking measurements every 2 5 mins over a period of 30 mins of gas A acetone and the following results unshaded area were obtained and recorded in the display memory for stand alone users BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 99 of 280 Chapter 7 BE6011 16 A ACETONE Averaged Values 0 11 42 1 66 72 mg m 66 72 mg m 0 a 2 154 90 mg m 110 9 mg m 0 Cite 3 271 30 mg m 164 3 mg m 0 ake 4 415 90 mg m 227 2 mg m 0 ai 5 588 70 mg m 299 5 mg m 0 oe 6 789 70 mg m 444 1 mg m 0 o 7 1 019 g m 616 9 mg m 0 CA 8 1 276 g m 817 9 mg m 0 em 9 1 562 g m 1 047 g m 0 en 10 1 876 g m 1 304 g m 0 em 11 2 218 g m 1 159 g m 0 ef 10 12 2 589 g m 1 904 g m 00 Let us suppose that the averaging period was set to 10 mins When the above measurement results are displayed on the screen and the averaging function is activated then each measurement will be averaged over the previous 10 mins a
205. nd the averaged measurement results will replace the individual measurement results averaged results are shown in the shaded area in the list above For example measurement number 7 would be 616 9 mg m This is the average of the 5 measurements taken in the 10 min period ending at 11 57 30 Measurement number 12 would be 1 904 g m which is the average of the 5 measurements taken in the 10 min period ending at 12 12 00 The range of acceptable values and the default value of the averaging period are shown in Table 7 6 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 100 of 280 Chapter 7 Table 7 6 The range of acceptable values and the default value of the averaging period Display Text Acceptable Default Values Value ENTER AVERAGING PERIOD hours minutes hours minut 00 10 00 10 to 12 00 Stand alone Use When the averaging function is active it will not only affect the results displayed on the screen but also the measurement results which are being printed out from the Display Memory see Chapter 12 However when the averaging function is deactivated by pressing AVERAGE again the LED will switch off the original results unshaded will replace the averaged results on the screen Gas index card Gas Setup there are up to six selections here A B C D E and W These represent the filters installed in the monitor s filter carousel When setting up a
206. ng Sil Default This option appears over the 3 select push button If you wish the parameter appearing on the display screen to be the same as the factory defined value you can press 53 Some parameters do not have pre defined default values so that when Default is used a blank line will appear instead of a number The default value of such a parameter is said to be blank For example GAS A S HIGH ALARM LIMIT 1 ppm CANCEL DEFAULT If the value of a chosen parameter lies outside the pre defined minimum and maximum values the value will be corrected and at the same time a beep will sound You will then have to enter the correct value by pressing J and repeating the process When you have to choose or change a parameter and the text PRESS ENTER TO CHANGE VALUE is displayed use the direction push buttons and follow the procedure below Details about the direction keys are provided in section 5 2 1 Press L A cursor will blink under one of the parameter s numbers or letters and the bottom line will display the soft keys Cancel and Default 2 Use A and VW to change the entry above the cursor to the desired number letter For pre defined parameters these push buttons enable you to scroll through the list Display the desired parameter then go to step 5 Da Use lt and gt to move the cursor across the entry fields and repeat step 2 4 Repeat steps 2 and 3 until the entry fields show the desired
207. ning Time weighted Average TWA Values 1412 Only BE6011 16 By using the AVERAGE button Time weighted Average concentrations Crwa of all the monitored gases can be obtained over any user defined period of time T hours The following steps are involved 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 150 of 280 Chapter 9 9 1 3 BE6011 16 1 Press and 52 2 Enter the period of time required for averaging this could for example be 8 hours if you are interested in finding out whether the 8 hour Time Weighted Average concentration of gases are in compliance with National Occupational Exposure Limits or alternatively the averaging period could be 15 minute Time Weighted Average if you are interested in finding out whether the Short Term Exposure Limit STEL of the gases complies with National Occupational Exposure Limits 3 Press and then AVERAGE When steps 1 to 3 are complete scroll through the measurement results displayed on the screen Display Memory Notice that all measurements have been averaged over the chosen averaging period A detailed example is given in section 7 2 How Time weighted Averages are Calculated In order to explain how the 1412 averages gas measurements over a fixed user defined averaging period let us Suppose that a particular gas has been monitored continuously and that its measured concentration was C durin
208. nitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 18 of 280 Chapter 2 BE6011 16 Using the Pozidrive screwdriver No 0 undo the upper four screws which hold the frame over the front panel of the 1412 Gently lift off the upper cover of the 1412 by pulling it firmly upward 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 19 of 280 Chapter 2 BE6011 16 6 Use a screwdriver to remove the fuse holder re Remove the old fuse from the holder and replace it with a new Check that the fuse have the correct rating The fuse must be Slow blow T fuse with a rating of 2 5 A 250 VAC 5x20 mm UL approved Innova order number VFOO87A Install the fuse holder and re assemble the 1412 again The figure below shows the inside of the top cover of the 1412 Note that the front side of the cover has square flanges Place the top cover back in its correct position on top of the 1412 and screw in the all screws 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 20 of 280 Chapter 2 2 4 Setting the Communication Parameters The Gas Monitoring Software 7304 and the monitor communicate using the RS 232 interface In order for the communication to be successful it is essential that the communication parameters in the two instruments are set correctly This is a two stage process the PC
209. nly available when two cursors are selected Zoom out only available when zoom is enabled Display the active window properties 4 gt lp E 14 15 16 17 18 Tel 19 14 1516 17 18 presentation only Go to the start of the measurement task presentation only Scroll backwards through the measurement task presentation only Scroll forwards through the measurement task presentation only Go to the end of the measurement task Open the cursor values dialogue 19 Online only open the Alarm status dialogue 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 12 of 280 Chapter 2 Chapter 2 Preliminary Tasks July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 13 of 280 Chapter 2 When taking delivery of the 1314 Photoacoustic Multi gas Monitor or the 1412 Photoacoustic Field Gas Monitor five very important and preliminary tasks must be completed before starting to operate it Install the Gas Monitoring Software 7304 to enable operation from via a PC see section 2 1 Connect the Monitor to a PC see section 2 2 Check Change the fuses in the monitor see section 2 3 Set the Communication parameters see section 2 4 Set up the password protected user levels see section 2 5 2 1 Installing the Gas Monitoring Software 7304 Before installing the software the
210. ntration Concentration offset factor offset factor offset factor offset factor offset factor Humidity gain factor Humidity gain factor Humidity gain factor Humidity gain factor Gas conversion Gas conversion Gas conversion Gas conversion factor for gas Al factor for gas B1 factor for gas C1 factor for gas D1 Gas interference on Gas interference on Gas interference on Gas interference on filters B to E filters A and C filters A B and filters A to C and l to E l E l E l 14 7 Zero point Calibration To calculate the concentration offset factor for a filter during a zero point calibration it is necessary to have a humidity gain factor for the filter and vice versa If a humidity gain factor is not stored in each of the filter banks which are active during a zero point calibration then it is necessary to perform a combined zero point and humidity interference calibration task The set up of this combined task is discussed in section 14 13 As mentioned in the previous sections the zero point calibration task is not selective This means that you cannot choose zero point calibration of a single filter in the carousel for example when a new optical filter has been installed When you perform a zero point calibration then all the installed filters will be zero point calibrated If it is only a newly installed optical filter which needs to be calibrated then the same procedure used for an individual filter must be us
211. nts are displayed If you want to change any of the display parameters then do this using the Windows Properties dialogue 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 126 of 280 Chapter 8 Events index card presentation only There are five check boxes which can be selected here If a tick appears in the check box then this event is displayed in the numeric window Communication Errors are marked by a line with a C at the end of it These indicate if there has been communication problems between the Monitor and the PC Alarms are marked by a small red triangle V These indicate when the alarm was triggered and are situated on the value for the gas which triggered the alarm User Events are marked with a User Event Text at the end of it see figure 8 6 Gas Monitor Warnings Errors Event Marks Common Marks apply to all filters The Monitor stopped measuring due to a power failure but automatically re started monitoring again after regaining power The Monitor was reset because a fault was detected Text when the Event button was pressed w An operational error was detected or a warning was given during the measurement The accuracy of the measurement cannot be guaranteed Gas Marks apply to individual filters B The Monitor was incapable of calculating this gas concentration F After this measurement the filter
212. nuously If you select No S1 go to step 5 If you select Yes S3 go to step 6 5 The sampling interval is displayed Use the direction push buttons to change it to the correct value 6 Use the select push buttons to define if you want to monitor for a pre set period If you select Yes go to step 7 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 105 of 280 Chapter 7 If you select No go to step 8 7 The monitoring period is displayed Use the direction push buttons to change it to the correct value The MONITORING PERIOD is entered as Days Hours Minutes For example if this particular measurement cycle needs to be performed during 5 days 14 hours and 30 minutes the monitoring period should be entered as 5 14 30 The Monitor will then automatically stop monitoring 5 days 14 hours and 30 minutes after the measurement cycle with this particular set up number is started The range of acceptable values and the default value of the monitoring period is shown in Table 7 8 Table 7 8 The range of acceptable values and the default value of the monitoring period Display Text Acceptable Values Default Value ENTER MONITORING days days PERIOD hours minutes hours minutes O 00 01 to 7 00 00 0 01 00 The Monitor s Display Memory has finite storage capacity The data storage time available depends upon the number of gases being measured as well as the
213. oacoustic Field Gas Monitor Page 182 of 280 Chapter 12 12 3 2 BE6011 16 If you are in doubt about any of the settings refer to your printer manual 3 When you have been through all the parameters the monitor returns to the top of the Communication branch of the Set Up Tree 4 Press 3 S1 and then SET UP This selects the RS 232 port as the communication port for the printer 5 Press RESET and S1 to partially reset your Monitor IEEE Interface The parameters in this branch decide how the Monitor communicates via the IEEE 488 interface bus Monitors 1412 1314 s ADDRESS 14 This enables the Monitor to be addressed via the IEEE 488 interface The range of acceptable values and the factory default value of the Monitor s address are Shown in Table 12 2 Table 12 2 The range of acceptable values and the default value of the Monitor s address Display Text Acceptable Default Values Value 1314 1412 ADDRESS from 0 to 100 The other IEEE 488 communication parameter which need to be selected in this branch of the Set Up Tree is shown in Table 12 3 together with available choices and the factory default value Table 12 3 The range of acceptable values and the default value of the IEEE 488 communication parameter Display Text Acceptable Default Values Value IS 1314 1412 SYSTEM NO YES YES CONTROLLER IS 1314 1412 SYSTEM CONTROLLER The user chooses whether or not the Monitor will be the system controller o
214. obtained by pressing INFO The messages displayed when is pressed are listed and explained below Invalid Error Messages MISSING MEASUREMENT DATA This message indicates that the Monitor does not have the necessary data to calculate absolutely valid calibration factors This situation could for example be caused by too much noise in the analysis chamber The calibration task will have to be repeated WATER VAPOUR MEASUREMENT lt OFFSET This message is associated with either 1 a span calibration of the water vapour filter or 2 a humidity interference calibration This message indicates that the signal measured with a particular filter when water vapour of known concentration is in the analysis cell is less than the signal measured in the cell when zero gas is in the cell This could indicate either e That the gas used during the zero point calibration of the filter was not dry or e That the water vapour used during either the span calibration of the water vapour filter or the humidity interference calibration was not wet enough 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 267 of 280 Chapter 16 BE6011 16 WET MEAS lt DRY MEAS FOR WATER FILTER and HUMIDITY INTERFERENCE FACTOR lt 0 Both these messages are associated with a combined zero point and humidity interference calibration task WET MEAS lt DRY MEAS FOR WATER FILTER HUMIDITY INT
215. ollowing optical filters UA0983 UA0984 or UA0985 Tefl To flow meter Pressure enon gauges tubing A Tube fittings Gas flow Attachment point no 2 gt Y piece Attachment point no 1 Teflon tubing connected to air inlet of the monitor Teflon Nafion Teflon point no 3 Monitor 900871 le Calibration of the Water vapour Filter Stand alone Use The water vapour filter has two different functions Its most important function is to enable any measured signal to be compensated for water vapour interference Its other function is to measure the absolute concentration of water vapour in air samples If you only wish to use the water vapour filter to compensate for water vapour interference then it only has to be zero point calibrated If you wish to use it to measure the absolute concentration of water vapour in air samples then it has to be zero point calibrated and span calibrated It is vitally important to accurately zero point calibrate the water vapour filter as this influences the Monitor s ability to compensate for interference from water vapour This demands that the zero gas you use during the zero point calibration of the filter must be perfectly dry 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 250 of 280 Chapter 14 14 12 1 Setting up a Zero point Calibration of the Water BE6011 16 vapour Filter If you wish to zero point cal
216. onitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 66 of 280 Chapter 4 BE6011 16 DATA IN DISPLAY MEMORY RECORDED FROM 2004 01 16 09 50 TO 2004 01 16 10 04 4 Press P This causes the following text to appear on the screen WATER VAPOUR MEASURED Use WV to scroll through the following screen displays MONITORING PERIOD IS NOT PRE SET WATER MAX 8 55E 00 u 8 15 00 MIN 7 01E 00 o 816E 03 W WATER VAPOUR 971 88mBar 2004 01 16 09 50 32 7 39Tdew W WATER VAPOUR 971 88mBar 2004 01 16 09 51 33 7 49Tdew Press P This causes the display to jump over to the list of measurement results for gas A The following text appears A the name of the gas being measure by Filter A will appear here 972 06 mBar 2004 01 16 09 51 33 7 43 mg m3 By using A and W you can now scroll through the list of measurement results for gas A If you do not wish to view the results anymore press J this acts as a go to head function The following text appears 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 67 of 280 Chapter 4 4 4 8 Stopping a Monitoring Task 1 Let the Monitor monitor for a total period of about 30 minutes and then press MEASURE The following text will appear on the screen STOP MONITORING TASK NLO VES If you pressed accidentally this screen enables you to cancel the request to stop the monitoring
217. or LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 108 of 280 Chapter 7 22 Use the select push buttons to choose which individual parameters should be printed Each time one of the select push buttons are pressed the next parameter is displayed This step can be repeated up to 7 times depending on the number of filters installed 23 Use the select push buttons to select the Text line Terminator 24 The text screen returns to the top of the set up tree Press SET UP to exit the set up tree If you want to set Alarm limits for the measured gases go to section 7 3 7 3 Setting up the Monitor s Alarm Levels The alarm limits of a gas are those concentrations of gas which Should activate any alarm relay connected to the Monitor via its back panel Alarm Relay socket There are two different alarm relays which function slightly differently Details of these relays and the way in which they function is described fully in section 5 5 The alarm level parameters are found in the Filters branch of the Set Up Tree Warning If the UA number for any filter is changed here then all the calibration data for that filter will be lost and the filter will need to be recalibrated 1 Press SET UP 53 53 The following text is displayed CHECK AND OR CHANGE SET UP FOR FILTER A NO YES 2 Use the select push buttons to ignore this filter or to select this filter if alarms are to be set 3 Press V 5 times unti
218. ore Starting Any Calibration Before starting any kind of calibration task there are several operations which need to be performed Obtaining a Print out of Calibration Data in the Whether the Monitor is to be used online or as a stand alone instrument the Gas Monitoring Software 7304 can be used to check the Monitor s existing calibration All the calibration factors can be printed out directly from the software using the Print Current Calibration see section 8 9 2 Stand alone Use BE6011 16 With the monitor connected to a printer details are given in Chapter 12 Press PRINT and then 3 To stop printing press PRINT again 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 202 of 280 Chapter 14 14 3 2 Filter BE6011 16 Checking the Calibration of Each Installed Optical A print out of the calibration data in the Monitor s memory is useful to have for reference It also enables you to find out how old calibration factors compare with the new calibration factors calculated during re calibration tasks see section 14 3 1 Fig 14 4 illustrates only part of a typical calibration data print out To simplify our discussion we will confine our discussion to the calibration data for a single optical filter installed in position A Note that there are five different filter banks which contain calibration data These banks are numbered from 1
219. ormatiori Measurement Actve Last Measurement Time 10 01 25 Filter Value A Carbon dioside 450 59 ppm B Carbon monoxide 0 59 ppr C Dinitrogen oxide 0 54 ppm D Sulphur hesatlouride 0 00 ppr E TOL ref methane B o ppr We W ater Vapour 12 11 Tdew C Alr Pressure 1005 40 mE ar BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 134 of 280 Chapter 8 8 7 Displaying Measurement Results while Monitoring Using the Online program measurement data is displayed on screen as soon as it is available from the monitor The data can be displayed in both a graphic window and a numeric window simultaneously The latest measurement results are always displayed With the Online program running and a monitoring task started 1 If you want to open another window pull down the Window menu and click on New Graphic Window or New Numeric Window 2 Click in the window you want to set up and pull down the Edit menu Click on Window Properties see Fig 8 10 Fig 8 10 The Window Properties dialogue for a graphic window Online testing lel x Task Sequence Edit View Window About Ds a SI A lula E a all al Bla 2 Graphic Window 2 A Carbon monoxide mo Poigro ge gr E VW Water Vapour Tdew C P Air Pressure mmH g Interval Left Y axis Right Y axis sie 750 rT mS 700 650 Autoscale maximum minimum 0 600 C Autosc
220. oscale maximum and minimum In the Single Curve Set up click in the Select parameter field and select the gas name for Filter A Select the desired colour style and units When all your selections are correct click on Add The selected gas is now displayed in the All curves field This means it will be displayed on the graph with its concentration scale on the left axis Right Y axis index card BE6011 16 14 15 16 Click on the Right Y axis index card In the Scaling group click on the radio push button next to Autoscale maximum and minimum In the Single Curve Set up click in the Select parameter field and select the Water Filter 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 50 of 280 Chapter 4 4 3 6 4 3 7 17 18 19 Select the desired colour style and units When all your selections are correct click on Add The selected gas is now displayed in the All curves field This means it will be displayed on the graph with its concentration scale displayed on the right axis Press OK to save the selections and exit the dialogue box The measured data will now be displayed on screen Stopping a Monitoring Task Pull down the Sequence window and click on Stop Scrolling through Measurement Results on Completion of a Monitoring Task Open the Presentation option of the Gas Monitoring Software 7304 1 Pull down the Tas
221. oustic Field Gas Monitor Page 163 of 280 Chapter 11 11 1 In order to fully understand the functioning of the Monitor it is necessary to know something about the different types of memory the Monitor uses the kind of data stored in each type of memory and how this data is affected by the various operations performed by the Monitor Offline users may find the information in this chapter of interest as their measurement data is stored in the Monitor s memory before being uploaded to the PC However any mention of selecting or setting up active filters or filter banks in this chapter is not ap plicable as these are set up or selected in the Offline Sequence Settings dialogue Types of Memory in the Monitor The Monitor has three types of memory 1 A Read Only Memory ROM 2 An Electrically Erasable Programmable Read Only Memory EEPROM which we have named the Source Memory 3 A Random Access Memory RAM which we have named the Working Memory 11 1 1 Read Only Memory ROM BE6011 16 Data stored in this memory cannot be changed by the user The Optical Filter Factors which describe each of the optical filters which are available for installation in the Monitor are stored in this memory These factors are listed in a print out of the Calibration Data Block see section 12 7 When optical filters are installed in the carousel wheel the Monitor must be informed about e Which filters have been installed in it
222. outlet on the back panel so that the sampled gas is carried away to the open air or to an extraction and or filtration unit 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 5 of 280 Safety Considerations Warnings BE6011 16 Avoid water condensation in the instrument Switch off all equipment before connecting or disconnecting their digital interface Failure to do so could damage the equipment Whenever it is likely that correct function or operating safety of the apparatus has been impaired the apparatus must be made inoperative and secured against unintended operation Any adjustment maintenance and repair of the open apparatus under voltage must be avoided as far as possible and if unavoidable must be carried out only by trained personnel If a fault is reported by the monitor that indicates correct function of the instrument may be impaired consult your local LumaSense Technologies representative Under no circumstances should repair be attempted by persons not qualified in service of electronic instrumentation 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 6 of 280 Safety Considerations Applying Power BE6011 16 Before using the 1314 or the 1412 check that the available mains voltage match the specified voltage and frequency for the instrument SAFETY SYMBOLS A The apparatus will be marked
223. performing any kind of reset The Monitor just goes back to operating the same way it was operating before the RESET push button was pressed s1 s2 PARTIAL Reset If this level of reset is chosen the Monitor stops operating performs a partial reset as described in the previous section section 5 3 2 and then resumes operating in the fashion described in Table 5 1 FULL Reset If this level of reset is chosen the Monitor responds by changing the text on the display so that you have a chance to confirm that you wish the Monitor to perform a FULL reset PERFORM FULL RESET s1 s3 By pressing this push button the user can come out of reset mode without performing any kind of reset The Monitor just goes back to operating the same way it was operating before was pressed By pressing this push button the user confirms that a FULL reset is required During a FULL reset the Monitor performs the following two tasks e Clearing emptying all data from its Working Memory This means all data in Display Memory and Background Memory will be lost 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 82 of 280 Chapter 5 e Copying data from its Source Memory into its Working Memory This means that set up parameters in block 3 of Working Memory Other Set up Parameters will be given their default values and the values of the optical filter set up parameters in Wo
224. period T between the cursors Ch gas concentrations where n 1 to N 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 153 of 280 Chapter 9 9 2 2 The Standard Deviation o this is the standard deviation of a particular gas s measurements from the mean value u of this gas Standard deviation can be expressed mathematically as follows The Standard Deviation o Where u the mean value Ch individual gas concentrations N total number of measurements Symbols used in Displayed Measurement Data If an asterisk appears on the display alongside any gas concentration it indicates that something happened during the measurement You can find out what the asterisk indicates by pressing the button The following display appears for a short period of time EVENT NO will appear on the screen only if the Event Mark button only 1412 was used during the monitoring task In this case the letter E will also appear as a Common Mark The symbols which can appear after the text COMMON MARK and GAS MARK are listed below with a short explanation of what they mean Common Marks BE6011 16 Pp 1 The Monitor stopped measuring due to a power failure but has automatically re started the monitoring task again after regaining power 2 The Monitor has been reset either because of a detected fault or because was pressed SE The measurement
225. point Calibration BE6011 16 During a two point span calibration the total signal in the cell Viow is measured first with a low concentration Ciow of span gas and then the total signal in the cell Vhigh is measured with a high concentration Chig Of span gas This enables the Monitor to compensate for any unlinearity in the relationship between the signal measured in the cell and the concentration of the gas in the cell this is illustrated for a gas Al in Fig 14 20a Here are some guidelines about the concentration of gas you should use during a two point span calibration e The Low Concentration should be 10 to 30 of the highest concentration you expect to measure 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 240 of 280 Chapter 14 If the desired measurement range is mainly within the linear range then the low concentration should be between 1000 and 10 OOO times the detection limit If the desired measurement range is mainly above the linear range then the low concentration should be more than 10 OOO times the detection limit e The High Concentration should be 75 to 100 of the highest concentration you expect to measure but no higher than this Simple Test to Determine the Linearity Let us assume that you wish to measure a gas over a dynamic range from 100 ppm and 3000 ppm of a gas that has a detection limit of 0 3 ppm In this case the range in w
226. ppm ba 04 06 02 04 06 02 04 06 02 Select colour Select style 13 10 00 13 20 00 13 30 00 m Define Add New Insert Before Remove All Curves Sampling index card BE6011 16 ium 1 Click on the Time radio push button and define the interval length to 1 min 2 Ensure that the Average check box is not ticked in the Sample Type group This enables single sample values to be displayed If you have opened a numeric window go to step 3 If you have opened a graphic window go to step 9 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 49 of 280 Chapter 4 Column index card 3 4 Click on the Column index card In the Single Gas Set up group click in the Select parameter field and select 7 8 the gas name for Filter A Click in the Select unit field and select the desired units When all your selections are correct click on Add new The selected gas is now displayed in the All Columns field This means it will be displayed in the numeric window Repeat steps 6 to 8 selecting the Water filter Press OK to save selections and exit the dialogue box The measurement sequence is started and the results are displayed on screen as soon as they are available Left Y axis index card 9 10 11 12 13 Click on the Left Y axis index card In the Scaling group click on the radio push button next to Aut
227. pressure sound wave it creates How do we measure the relationship between the measured sound Signal and the concentration of the absorbing gas in the cell We calibrate the optical filter Our description of what happens in the cell is however a little too simplified In reality we have to take three other factors into consideration namely 1 cell noise 2 the presence of water vapour in the sample humidity interference and 3 the possible presence of other interferent gases Fig 14 1 High resolution absorption spectrum of water vapour 10 wavelength um c o Q Q ea Fa a o 4000 3500 3000 2500 2000 wavenumber Cell Noise BE6011 16 When there is zero gas in the cell that is a gas which does not absorb any infra red light a signal is measured in the cell This Signal is due to what is termed cell noise Cell noise is created by the imperfect reflection of infra red light from the cell walls It is dependent upon the properties of the cell itself for example its dimensions and the reflectivity of its walls as well as the wavelength 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 198 of 280 Chapter 14 and thus energy of the infra red light which is incident on its walls As it is the optical filter which determines the wavelength of light cell noise will depend upon the optical filter being used The cell noise signal is mea
228. pter 12 Chapter 12 Using a Printer with the Monitor July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 179 of 280 Chapter 12 12 1 12 2 BE6011 16 Introduction This chapter informs you on how to obtain hard copies of data stored in the memory of the monitor This could for example be existing calibration data which you need prior to recalibrating Alternatively for those of you who want to use the monitor as a Stand alone instrument this chapter enables you to print out measurement data error logs and data logs If any error occurs during any of these operations a warning will be displayed All pos sible errors of this kind are listed in Chapter 17 The Monitor has two interface ports on its back panel an IEEE 488 and an RS 232 This means that any standard text printer with one of these interfaces can be used to print out data from the Monitor Data can be printed out while the Monitor is operating using the Data logging facility This means that during a monitoring task or during a calibration task the Monitor will automatically send measurement results to the printer as soon as they are available see section 12 5 Any operational errors or warnings that occur during a monitoring task can also be automatically printed out using the Error logging facility Alternatively when the Monitor is not being operated in any mode data can be prin
229. r A In this case the factor Gas B s Interference on Filter A listed in the calibration data bank see section 14 3 2 will be seen to be zero HIGH CONC SPAN MEASUREMENT TOO LOW This message is associated with a two point span calibration task The above message indicates that the signal measured during span calibration when the high concentration of span gas is in the cell is less than 15uV This means that the high concentration of span gas is too low LOW CONC SPAN MEASUREMENT TOO LOW This message is associated with a two point span calibration task The above message indicates that the signal measured during span calibration when the low concentration of span gas is in the cell is 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 272 of 280 Chapter 16 less than 3yuV This means that the low concentration of span gas is too low BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 273 of 280 Chapter 17 Chapter 17 Warning and Error Messages July 2009 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 274 of 280 Chapter 17 BE6011 16 When the Monitor is switched on and while it is being operated the Monitor regularly performs a series of self tests which check that the various mechanical elect
230. r The following text appears on the screen RESULTS NOT YET AVAILABLE PLEASE WAIT Once the first measurement result is available the screen text illustrated above is replaced by a screen displaying the measurement results for example the following W up 5 34 uV o 212 nV 3 40 4 C PRESS ENTER WHEN RESULTS ARE STABLE As soon as measurement results are available they not only appear on the display see Fig 14 17 but are automatically printed out on the printer if the Monitor has been set up to print a data log see section 12 5 Remember to turn off the data log when the calibration is complete Each time a sample of gas is drawn into the analysis cell the Signal is measured using both optical filter A and the water vapour filter W but due to lack of space on the display the Monitor only displays the signal measured using the water vapour filter The data log print out however shows the signal measured using both the water vapour filter and filter A If cross compensation calibration was also selected in the calibration set up then the signal is measured in the cell using all the installed filters A maximum of 6 measurements are stored in the Monitor during any calibration The number n indicates how many measurements are stored When 7 measurements have been performed the number n will show the number 6 because the very first measurement is overwritten by the 7 measurement so that only 6 meas
231. r 1 The length of the sampling tube attached to the Monitor s inlet has been incorrectly entered Either the external or internal pneumatic system is not air tight The pump is defective The length of the sampling tube attached to the Monitor s inlet has been incorrectly entered Either the external or internal pneumatic system is not air tight The motor that drives the filter carousel is not working The optical detector that checks the movement of the carousel is not working The filter carousel has not been properly mounted LumaSense Technologies A S Page 276 of 280 Chapter 17 CLOCK SET TO DEFAULT ERROR DETECTED IN CLOCK SETTINGS FACTORS SET TO DEFAULT ERROR DETECTED IN CALIBRATION FACTORS MEMORY SET TO DEFAULT ERROR DETECTED IN BACKGROUND MEMORY MEMORY SET TO DEFAULT ERROR DETECTED IN DISPLAY MEMORY MEMORY SET TO DEFAULT ERROR DETECTED IN INTERNAL MEMORY MEMORY SET TO DEFAULT ERROR DETECTED IN SOURCE MEMORY PARAMETERS SET TO DEFAULT ERROR DETECTED IN CONFIG FORMAT PARAMETER PARAMETERS SET TO DEFAULT ERROR DETECTED IN THE TASK SET_UP PARAMETER BE6011 16 1314 Photoacoustic Multi gas Monitor The Monitor s internal clock was found to be incorrectly set so these values have been set to their default values An error has been found in the data stored in the Calibration Factor part of the Monitor s memory so these factors have been set to their defa
232. r LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 131 of 280 Chapter 8 Event Time At Cursor Position 3 B Previous Measurement C Next Measurement Event Tert OF Cancel 3 Type in any comments you may have in the Events Text field 4 Click on OK Fig 8 6 The User Event text in the online graphic and numerical windows Online onlinetest Task Sequence Edit view Window About Dis S o dts he sls E EF Cursor Yalues Graphic Window 1 Cursor Pos 3 View Settings Cursor Value Event Text Water vapour Tdew C 12 082 Dinitroagen oxide ppm 0 506 CE o Dinitrogen oxide ppm VW Water Vapour Tdew C Minimum F Numeric Window 1 Time C Dinitrogen oxide VV Water Vapour ppm Tdew C 04 06 07 12 22 26 0 574 12 1 04 06 07 12 23 36 0 544 12 1 04 06 07 12 24 35 0 506 12 1 Minimum 04 06 07 12 25 34 0 555 12 1 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 132 of 280 Chapter 8 The user event marker and event text will appear at the designated point 8 5 2 Deleting a User Event Marker To delete a User Event marker 1 Position the cursor in the Numeric Window or the Graphic Window at the desired position 2 Pull down the Edit menu Click on User Event and a new dialogue box opens 3 Online only click on the radio button for the desired position
233. r all the values for each parameter between the cursors The calculation of the mean value can be expressed mathematically as follows y Cn The average value Where N measurement cycles performed during the monitoring period T between the cursors C gas concentrations where n 1 to N Maximum this shows the maximum value for each parameter between the cursors Standard Deviation this is the standard deviation of a particular gas s measurements from the average value of this parameter The Standard deviation Where u the mean value C individual gas concentrations N total number of measurements Note the View Settings soft key is not displayed when two cursors are displayed Zoom Function BE6011 16 When two cursors are displayed the zoom function can be used By pulling down the View menu and clicking on Zoom in All the measurement data outside the cursors is removed from the screen By setting new cursors the zoom can be repeated Note the Cursor Values dialogue updates each time the new cursors are displayed There are two ways to zoom out again You can pull down the View menu and click on Zoom out or You can redefine the time window or the number of measurements displayed in the Window Properties dialogue 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 130 of 280 Chapter 8 8 5 User Event Markers
234. r is given the chance to choose which of the gases A E and water W should be printed out PRINT GAS A and so on SELECT TEXT LINE TERMINATOR The user chooses which character the Monitor should use as end of text line when data is transmitted from the Monitor BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 184 of 280 Chapter 12 12 5 Data Logging Function Setting up the Monitor to Print a Data Log If the Monitor is connected up to a printer and it is set up to transmit data to the printer this function enables measurement data to be printed out automatically as soon as it becomes available during a measurement or calibration The procedure is as follows 1 Press the following sequence 53 S1 Si and the following text is displayed SELECT GENERAL SET UP BRANCH CLOCK SOUND TESTS 2 Press s3 v s3 SET UP This activates the data logging function 12 6 Error Logging Function Setting up the Monitor to Print an Error Log If the Monitor is connected up to a printer and it is set up to transmit data to the printer this function enables any warning or error messages that are displayed to be recorded in the printed error log automatically The procedure is as follows 1 Press the following sequence 3 S1 Si and the following text is displayed SELECT GENERAL SET UP BRANCH CLOCK SOUND TESTS 2 Press 53 v v S3 SET UP Thi
235. re measurement results form one measurement cycle The total space available in Display Memory to store data is 64 000 bytes If only one gas for example gas A and water vapour is measured then data from up to oT 3368 measurement cycles can be stored in Display Memory whereas if 5 gases and water vapour were measured data from up to only 64000 1 measurement cycles can be stored in Display 37 Memory The time required to perform a measurement cycle is dependent upon the number of gases water vapour being measured If we take the examples given above we can work out approximately how long the data from a monitoring task can be stored in Display Memory 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 156 of 280 Chapter 9 Table 9 1 Space occupied by results from one measurement cycle when a different number of gases is monitored Data being stored S Measurement 4 times 2 Event numbers 1 Common flags 1 CRC sum 1 Flags for gas 1 amp 2 gas 2 4 15 bytes Atmospheric pressure Results for gas 1 Results for gas 2 Flags for gases 3 Results for gas 3 Results for gas 4 Results for gas4 4 Flags for gases 5 amp 6 Results for gas 5 Results for gas 6 BE6011 16 19 bytes 24 bytes 28 bytes bytes 37 bytes If a measurement cycle in which gas A and water vapour are measured takes 15s and if sampling is continuous this means t
236. re you use the PC environment to set up the monitor prior to measuring display measurement data on the PC screen while monitoring and store the measurement results directly on the PC s hard disc These results can be used by other programs that use Open Database Connectivity ODBC The instructions for this mode of operation are covered in this manual under the PC Use headings Using the online mode provides you with a variety of Alarm options Not only are the alarm trigger levels definable but the action resulting from an alarm being triggered can also be defined here This enables you to connect external warning systems to the monitoring system The philosophy behind the Gas Monitoring Software 7304 is common to almost all Windows programs Access to the various levels of the program is gained by use of the MENU BAR PULL DOWN MENUS NEW WINDOW options and INDEX CARD separators These familiar procedures together with the simple software structure make the instructions in the On line sections of this manual understandable and easy to implement If you are unsure of any of the commands used in the On line instructions please refer to section 1 2 of this manual or your Windows manual 3 2 PC Use Offline This method of operation enables you to set up the monitor using the PC download the set up to the monitor and then disconnect the BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic
237. red as 2004 04 19 4 To change the date press I 5 Use the direction keys to enter the correct date Note press S1 to revert back to the original date 6 Press to accept date This causes the text on the display screen to change to the following CURRENT TIME 12 00 PRESS ENTER TO CHANGE VALUE 7 To change the time press M 8 Use the direction keys to enter the correct time If you make a mistake in entering the correct date just press S1 and start again The current time is entered as the time read on a 24 hour digital clock For example 13 45 is 15 minutes to 2 o clock in the afternoon 9 Press to accept time When this step is completed the display then moves to the previous head of the Set Up Tree 10 Press A three times and follow the path you take en route through the Set Up Tree The screen display shows the following text 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 54 of 280 Chapter 4 4 4 2 BE6011 16 SELECT SET UP BRANCH MEASUREMENT FORMAT CONFIGURATION 11 Press SET UP to exit Setting Units All data in the Monitor is stored as raw data The different units which you can select here enable you to enter gas concentrations and to display temperatures lengths and pressures in units which you are comfortable with These units are also used to present measurement data in a form that is most convenient for you Th
238. red parameter name 11 Click in the Select unit field and select the desired units 12 Repeat steps 9 to 11 selecting the other parameters you want to display Go to step 25 to define the event markers that you want displayed in the numeric window Left Y axis index card 13 Click on the Left Y axis index card BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 138 of 280 Chapter 8 14 In the Scaling group select the desired scaling mode by clicking on the correct radio button 15 If the parameters and their units displayed in the All Curves field are not correct click on the parameter you want to change If the parameters you want to display is not present in the All Columns field click on Add New or Insert Before 16 In the Single Curve Setup click in the Select Parameter field and select the desired name 17 Select the desired colour style and units 18 Repeat steps 15 to 17 until all the parameters you want displayed on the left Y axis are in the All Curves list Right Y axis index card 19 Click on the Right Y axis index card 20 In the Scaling group select the desired scaling mode by clicking on the correct radio button 21 If the parameters and their units displayed in the All Curves field are not correct click on the parameter you want to change If the parameters you want to display is not present in the All Columns field c
239. rews The instruments can be turned on at the mains now Setting up Communication Parameters WARNING You must perform a PARTIAL RESET of the Monitor press the and S1 buttons if the active value of any parameter in this branch of the Set Up Tree is changed If the Monitor is not partially reset then the Monitor will not up date the communication parameter data which was used last time data was transmitted via either of its interfaces By performing a partial reset you ensure that the Monitor has the parameters necessary to enable it to transmit data to the attached printer Press s3 S1 3 and the following text is displayed SELECT COMMUNICATION SET UP BRANCH RS 232 IEEE 488 CONNECTIONS If you are using the RS 232 interface go to section 12 3 1 If you are using the IEEE interface go to section 12 3 2 RS 232 Interface A brief description of the communication parameters is given below A list of the parameters together with the values available and their factory default values are shown in Table 12 1 The parameters in this branch decide how the Monitor communicates via the RS232 interface SELECT BAUD RATE gives the rate at which data should be transmitted from the Monitor via its RS 232 interface SELECT NUMBER OF STOP BITS gives the number of stop bits which should be used when data is transmitted from the Monitor to other equipment BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1
240. rical and electronic components of the Monitor are functioning correctly These self tests are described in more detail in Chapter 5 You can select to disable the regular self tests if desired see section 5 4 3 If any component is found to be functioning outside of its specifications either a Warning or a Operating error message will appear on the gas monitor s screen Please note A Warning and or Operating error message will only be displayed once If the fault is still found to be present during the next regular self test the message will not be displayed again Messages are only displayed when a fault is first detected If the fault corrects itself and then is later found to be faulty the message will be displayed again It is therefore important to note the message before pressing the button which will cause the error message to be removed from the display Although the message is removed from the screen any gas measurements performed while the fault is still present will be marked with an asterisk By pressing when such a measurement is displayed the Common mark O and or W and in some cases the Gas Mark F and Gas Mark A will be Shown on the display On the following pages all possible Warning messages are listed all possible Operating errors messages are listed and all possible Interface error messages are listed There is a description of each fault as well
241. rking Memory will be the same as those found in Source Memory 5 4 Configuring the Monitor 5 4 1 Setting the Clock Before dispatch from the factory the internal clock of the Monitor is set to the correct local Danish time The current date is entered as Year Month Day for example the 24 of July 2004 is entered as 2004 07 24 The current time is entered as the time on the 24 hour clock for example 14 05 is five minutes after two in the afternoon Table 5 2 details the range of acceptable values and the default value of the date and time Table 5 2 The range of acceptable values and the default value of the date and time Display Text Acceptable Values Default Value ENTER CURRENT DATE 0000 01 0000 01 01 to 9999 1988 01 01 01 12 31 ENTER CURRENT TIME 12 47 00 00 to 23 59 12 00 If the Monitor is to be used as a stand alone instrument then the clock can be adjusted to your local time using the following instructions 1 Press SET UP Refer to the Set Up Tree diagram so that you can follow your progress through the various branches of this set up 2i Press S3 S1 S1 Sil The following screen picture appears CURRENT DATE 2004 06 13 PRESS ENTER TO CHANGE VALUE BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 83 of 280 Chapter 5 5 4 2 BE6011 16 cr To change the date press A 4 Use the direction push buttons to enter the co
242. rrect date If you make a mistake press S14 to revert back to the original date oF Press to accept the date This causes the text on the display screen to change to the following CURRENT TIME 12 00 PRESS ENTER TO CHANGE VALUE 6 To change the time press Mi ve Use the direction push buttons to enter the correct time If you make a mistake in entering the correct date just press S1 and start again 8 Press to accept the time When Step 8 has been completed the display then moves to the previous head of the set up tree 9 Press A three times The screen display shows the following text SELECT SET UP BRANCH MEASUREMENT FORMAT CONFIGURATION 10 Press SET UP to exit the set up function Adjusting the Sound Level During certain operations or for example when an incorrect push button is pressed the Monitor emits a beep You choose the volume of the Monitor s beep The volume of the beep is expressed on a scale from O no beep to 3 loudest beep Table 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 84 of 280 Chapter 5 5 3 provides details of the available choices and the default value of this parameter Table 5 3 The available choices and the default value of the Monitor s beep Available Choices Default Value ENTER SOUND VOLUME 0 ee To set the volume 1 Press SET UP 2 Pr
243. rrect value BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 97 of 280 Chapter 7 When step 7 is completed the display returns to the top of the Units branch Press A to go to the top of the Set Up Tree or press SET UP to exit the set up mode 7 2 the Measurement Parameters The list of parameters to be defined is long To help show where these parameters appear in the Gas Monitoring software 7304 the parameters are grouped under their index card name The information about the parameters and the ranges shown is also valid for those of you setting up the Monitor using the front panel push buttons Sampling index card Sampling mode the manner in which the gases are sampled There are two possibilities here Continuous sampling once the monitor is finished measuring it starts again making the next measurement for a full explanation see section 4 1 2 Interval Sampling this is the time from the start of one measurement cycle to the start of the next one for a full explanation see section 4 1 2 Table 7 3 The range of acceptable values and the default value for the Fixed interval sampling Acceptable Values Interval Defalut Value hours minutes hours minutes hours minutes 00 01 to 01 00 00 01 00 02 Flushing the length of time the monitor flushes the measurement chamber and the sample tubing between measurements There are two options here Auto
244. rrrerrnnen 158 TOGA ANGT OdUCUON drman AE A A AA 159 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 2 of 280 Index 1 052 BACKUP Databases iurien a AE E EE a wa vane ee enna olan hea w ae 159 TOUS Restore Datan ases a teieccuss con A e A uanlnna ae E E A A dd Ce wataaen edna 160 10 4 Delete Databases csssannicsncndniwnenined E manana annes brendan inet duneainenerinied ta ooramee inne 161 10 5 EXPOre DatapaS ES aina E E ee een aed Raa ia eee 162 Chapter 11 Storage of Data in the Monitor s MEMOLy cccceee cece cece eeeeeee eee eeeeeeeeeeaeaeeeeeeeenes 163 11 1 Types of Memory in the Monitor cccccccccssssseeeeeeceesenseeeeeteeeseeegseaatteesesseguuaanneeeengs 164 11 2 StOrage of Measurement RESUITS siaunaseiree x saniexaanerseetaannnrastisniaie a 173 11 3 Management of Data in Background MEMOL Y cccceeeee cece rece eeeeeeeeeeeeeeeeeeaeeeeeeeeeeenes 176 Chapter 12 Using a Printer with the Monitor ciorraim ori rra aA AE A NA a 179 i ea te a el oye Scio g Rerenr ne ar ete net A cere A E O ert 180 IAZ PRIN Geli Can CS stansaespicecusenaaynesense ni aian eine erates meiasaaunbeenusetaad aie eiaseiag nataaesateemanaebeen 180 1223 Setting up Communication Parameters ccrois eleresies be E E EEA AAEN 181 IAA Additional Parameters Regue dinarna a a cedar aamerae cata 184 123 Data LOGGING PUNCUION sesionit torien E a EN 185 12 6 Error LOGGING F
245. ructions are presented is shown below SELECT SET UP BRANCH MEASUREMENT FORMAT CONFIGURATION The display above is used continuously through out this manual It assists you displaying the text on screen and by indicating which of the push buttons can and should be pressed In general the push buttons shown above are used to navigate through the various modes possible within the 1314 1412 but are described in more detail below SI S2 S3 These push buttons are illustrated as S1 S2 and S3 The numbers are only present on the front of the 1314 instrument For 1412 they correspond to the key and their position on the instrument These select push buttons enable you to select one of the options displayed This group of 5 push buttons are referred to in this manual collectively as the direction keys The symbols below are used to simplify the instruction in this manual 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 10 of 280 Chapter 1 A amp V enable you to increase amp decrease numbers respectively or to go to the Previous amp Next Displays respectively lt amp gt enable you to move across number fields or go to the Previous amp Next gases respectively I depending on the situations acts as an Enter or Go To Head key Memory Function push buttons are always represented with the name of the push button enclosed in a box which is sh
246. ry the parameters in this block are given factory set values These are the values obtained for a parameter when the button is pressed Working Memory RAM The Working Memory is a volatile memory that is data will be lost from it if electric power is removed from the Monitor When the Monitor is not connected to a mains power supply a lithium battery in the Monitor provides a back up power supply to protect the data in this memory When this battery is no longer providing enough power a warning BACK UP BATTERY TOO LOW will appear on the Monitor s display to indicate that the battery needs to be replaced by a new one 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 167 of 280 Chapter 11 There are four different blocks of data in the Working Memory see Fig 11 1 Block 1 contains only calibration factors and 3 optical filter parameters from each of the active Filter Banks Block 2 contains 2 of the 5 optical filter parameters with values which are the same as those found in Block 2 of the Source Memory Block 3 contains all other set up parameters i e excluding the optical filter parameters with active set up values Block 4 this block contains measurement data which was copied into it from the Display Memory This block is called Background Memory because the data stored in it cannot be accidentally deleted Block 5 contains data collecte
247. s A amp V have two uses to increase amp decrease numbers respectively or to go to the Previous amp Next Displays respectively The number increase and decrease functions are used whenever values which can be changed manually are displayed on screen for example changing a parameter such as the length of sampling tube The Previous Display and Next Display functions are used when you want to view the previous or next screen texts This can be useful when setting up the monitor By using these push buttons you can scroll quickly through a branch of the Set Up Tree These push buttons can also be useful when viewing measurement data for example if you are looking at gas A s measurement result no 3 by pressing A gas A s measurement result no 2 will be shown on the screen By pressing W gas A s measurement result no 4 will appear on the display screen lt amp gt enable you to move across number fields or go to the Previous amp Next gases respectively When you are entering values or names in the monitor for example when setting up the monitor you can use these push buttons to move the cursor across the entry fields Previous Gas amp Next Gas functions are used primarily when viewing measurement data The display screen only displays the measurement data for one gas at a time out of 5 gases and water vapour These push buttons allow you to look at the measurement data for any one of
248. s L and use the direction keys to change the monitoring task number to 1 Then press di again to accept the task number The following text appears on the display screen ACTIVE TASK MONITORING TASK NUMBER 1 START TASK DELAYED TASK CHANGE TASK 5 Press S1 to start the monitoring task The following warning then appears on the display WARNING DISPLAY MEMORY WILL BE DELETED PROCEED STOP Display Memory is where the Monitor stores the results of all measurements while it is performing a monitoring task If the monitoring task is stopped and then started again all the data already collected will be deleted from Display Memory However the data in Display Memory can be copied into and stored in the Monitor s Background Memory This operation is described in section 11 2 6 Press Sil The following text then appears on the screen MEASUREMENT IN PROGRESS RESULTS NOT YET AVAILABLE 7 When the first measurement cycle is complete the Monitor will automatically display the results and update them every time a new measurement cycle is completed An example is shown below 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 63 of 280 Chapter 4 4 4 7 A 84 5 E 00 DE This display gives the overview of the gas vapour concentrations last measured in this case the concentration of gas A and humidity of the water vapour are in the units that were selecte
249. s activates the error logging function 12 7 Printing out Data from the Monitor Before data can be printed out from the Monitor the communication parameters must be checked changed This is explained in section 12 3 1 for RS 232 communication and section 12 3 2 for IEEE communication The text line terminator must be set see section 12 4 before printing can proceed BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 185 of 280 Chapter 12 It is also necessary to define the averaging period if the AVERAGE option only valid for 1412 is selected Setting the Data Logging function is described in section 12 5 12 7 1 Starting a Print out Press and then one of select push buttons S1 52 or 53 depending on which data block you wish to print out 12 7 2 Stopping a Print out which is in Progress If a print out is in progress and you wish to stop it then the following steps need to be followed 1 Press the PRINT button on the Monitor s front panel The following text will appear on the display PRINT ABORTING PLEASE WAIT The printer will stop printing data 2 Use the Line Feed function on the printer if the paper is not ejected automatically BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 186 of 280 Chapter 13 Chapter 13 Maintenance of the 1314 1412 July 2009 BE6011 16 1314 Pho
250. s carousel UA numbers of the filters and e Where they have been installed position A E of the carousel see section 14 3 3 This information allows the Monitor to read the correct optical filter factors from its ROM memory when the filter is installed As these factors are used in the calculation of calibration factors it is vitally important that this information is correctly entered before calibration is performed 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 164 of 280 Chapter 11 11 1 2 Source Memory EEPROM The data stored in Source Memory is not lost if A C mains power is removed from the Monitor There are three blocks of data in the Source Memory see Fig 11 1 Block 1 contains calibration factors and 3 optical filter parameters Block 2 contains 3 of the 6 set up parameters found under the Filters branch of the set up tree Block 3 contains all other parameters in the Set Up Tree Block 1 Calibration Factors and 3 Optical filter Parameters BE6011 16 There are six different data files in this block Each data file is denoted by a letter which indicates the position a particular optical filter occupies in the Monitor s carousel Each file A to E is divided into five sections called Filter Banks which are numbered from 1 to 5 The water vapour filter is only capable of measuring water vapour and t
251. s entered in the Monitor set up Monitor wishes to send data print data log or error log but after the start of data transmission the device stops receiving data 1412 Photoacoustic Field Gas Monitor There are no other controllers on the IEEE bus so the Monitor should be made the controller The Monitor and RS232 device printer do not agree about which handshake signal they should use Perhaps the wrong interface cable has been used No device is con nected to the Monitor The device address has been entered in correctly in the Monitor s set up The device is off line it can not receive data The device is not able to receive data fast enough The device is no longer connected to Monitor LumaSense Technologies A S Page 279 of 280 1314 1412 LumaSense Technologies A S Tel 45 44 20 01 00 LUMASENSE Energivej 30 Fax 45 44 20 01 01 TECHNOLOGIES DK 2750 Ballerup Denmark http www lumasense dk
252. screens of the PC and the Monitor It is also the unit when print outs of monitoring task data are made from the Monitor However the user can express the measured gas concentrations in ppm 1 Press 53 52 53 and then SET UP 2 Use WV to scroll through the results of the monitoring task no 1 displayed on the screen Notice that the gas concentration units have been changed to ppm In a similar way the humidity unit for water vapour and the pressure unit can be changed 4 4 11 Changing the Humidity Unit after a Monitoring Task BE6011 16 1 Press SET UP s3 52 and then W to reach the following display HUMIDITY UNIT Tdew PRESS ENTER TO CHANGE VALUE 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 72 of 280 Chapter 4 2 Press and use the direction keys to display ppm 3 Press E to accept the unit of ppm 4 Press SET UP Use W to scroll through the results of the monitoring task no 1 displayed on the screen Notice that the water vapour unit has been changed to ppm 4 4 12 Changing the Pressure Unit after a Monitoring Task L Press 53 52 and then V to reach the following display SELECT PRESSURE UNIT kPa mBar mmHg 2 Press 53 to accept the unit of mmHg 3 Press SET UP Use W to scroll through the results of the monitoring task no 1 displayed on the screen Notice that the Pressure unit has been changed to mmHg BE6011 16 131
253. selected a delayed start the following text is displayed START TIME 1 00 00 PRESS ENTER TO CHANGE VALUE Pm P N P P N Use the direction push buttons to enter the desired date and start time e g 10 16 25 The following text is displayed BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 115 of 280 Chapter 7 ACTIVE TASK MONITORING TASK NUMBER 1 TASK WILL START AT 10 16 25 TIME 16 00 When the monitoring task starts the screen will change and display the same messages as those displayed when a monitoring task starts immediately Immediate Start If you selected an immediate start the following text appears on the screen MEASUREMENT IN PROGRESS RESULTS NOT YET AVAILABLE 7 When the first measurement cycle is complete the Monitor will automatically display the results and update them every time a new measurement cycle is completed An example is shown below A 4 52 E 01 Da W 8 33 E 00 This display gives the overview of the gas vapour concentrations last measured in this case the concentration of gas A and humidity of the water vapour are in the units that were selected that is mg m for gas A and Tdew for water vapour see section 4 3 2 If no pre set monitoring period is defined then to stop the monitoring task press and 53 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoa
254. sured during the Zero point Calibration of each filter A supply of dry zero gas is attached to the air inlet of the Monitor and the signal in the cell is measured with each installed optical filter A to E This signal is called the concentration offset factor for the filter Whenever the filter is used this signal is subtracted from the total measured signal as it is not related to the concentration of any gas Presence of Water Vapour BE6011 16 Water vapour is nearly always present in ambient air and it absorbs infra red light to a greater or lesser extent at nearly all wavelengths see Fig 14 1 This means that no matter which optical filter is transmitting light into the cell the water vapour in the cell will absorb some of this light and create a signal This signal is said to interfere with the signal produced by the gas we wish to measure with this filter Fig 14 2 Schematic diagram showing the relative absorption of water vapour by different optical filters Wave number cm 3500 2000 1500 1000 Water vapour filter a 3 S se Z Ta lt Filter A FilterC Filter D 2 3 5 6 7 8 9 10 11 12 13 Wavelength m 893309e How is this interference measured A water vapour optical filter which transmits light with a wavelength which is absorbed by very few gases except water vapour is always installed in position W of the filter carousel Using this filter water vapour s interferenc
255. surement results for water vapour are displayed on the screen then by using gt you can read the statistical analysis of the measurement results for gas A B C etc and then go back to the original display see Fig 9 1 EVENT only valid for 1412 This push button can be used pressed to mark the measurement being performed at the time at which a special event occurred during a monitoring task Any such measurement will appear on the display with an asterisk alongside it By pressing INFO when such a display is seen you can display what the asterisk indicates Section 9 2 2 shows the display which appears when INFO is pressed and explains all the symbols used Marked events are also shown on print outs and of monitoring task data see section 9 2 3 Vv This push button allows the user to scroll vertically downwards through the list of measurement results see Fig 9 1 A This push button allows the user to scroll vertically upwards through the list of measurement results The measurement list is a closed loop The push buttons A and WV have a repetitive function which means that if they are pressed continuously they will allow the user to scroll very quickly through a list Processing Measurement Data Gas measurement data stored in Display Memory can be processed in the following way e It can be processed to produce Time weighted Average TWA concentrations of gases over any user defined period of time Obtai
256. t Graphic Window 1 _ 18 x A Carbon monoxide Vv B T VOC ref Methane p W Water Vapour u Calibration Sequence Settings Sequence F P Calibration Gas Sampling Calibration Type Current Air Pressure C Zero Point Calibration All Filters C Humidity Calibration H 1001 30 mBar Gas Span Calibration Calibration Parameters Active Filter aaa RMIT ano ae I Perform Two Point Calibration Gas Concentration E 15 00 ppm Cursor Values Graphic Window 1 Left Cursor 376 Right Cursor 391 Minimum Average A Carbon monoxide uv 5 322 5 399 B TVOC ref Methane p 301 920 302 394 W Water Vapour p 6 748 6 963 T Temperature C 48 100 48 137 C Nf a Type in the concentration of the calibration gas to be measured b If a cross interference calibration is necessary tick the check box If you have not already set the S I T values click on the Gas index card and go to step 13 If you have set all the parameters on the Gas index card return to the basic set up instructions section 14 5 1 and continue from step 11 5 Click in the Perform Two point Calibration check box 6 Click on either the High Gas Conc or Low Gas Conc radio button 7 Type in the correct gas concentration 8 If you require a cross interference calibration click in this check box when the High Gas Conc radio button is selected 9 Repeat steps 6 to 8 selecting
257. t is presented in a different format An example of a monitoring task data print out is shown in Fig 9 3 Chapter 12 describes how this is done 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 152 of 280 Chapter 9 9 2 1 BE6011 16 Fig 9 3 Print out of monitoring task data 1412 Measurement Data 1412 Settings Compensate for Water Vap Interference Compensate for Cross Interference Sample Continuously Pre set Monitoring Period Store Measurement History Measure Gas A Carbon monoxide Gas B TVOC ref Methane Water Vapour Flushing Mode Sampling Tube Length Normalization Temperature Sample Integration Time Filter A Filter B Filter W General Information Start Time 2004 06 11 14 27 Stop Time 2004 06 11 14 30 Results Not Averaged Number of Event Marks Number of Recorded Samples Alarm 1 Alarm 2 86E 03 220E 03 329E 03 94 3E 03 3 18E 00 3 13E 00 3 08E 00 36 7E 03 13 8E 00 13 8E 00 13 8E 00 13 3E 03 Statistical Analysis Terms In the statistical analysis of the measurement results for each gas see in Fig 9 1 the following statistics appear The Mean Value u this is the linear average of all measurements of a gas taken during the total monitoring period The calculation of the mean value can be expressed mathematically as follows The Mean Value ae Where N measurement cycles performed during the monitoring
258. t open you must open one before continuing Pull down the Sequence menu Click on Start and the Start measurement Sequence dialogue is displayed see Fig 4 7 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 47 of 280 Chapter 4 4 3 5 BE6011 16 ime H 14 53 26 ate H 04 06 02 ime H 15 53 26 ate H 04 06 02 Nmf Click in the Enter sequence description field and type in the desired name This name enables you to have many measurement sequences stored under the same monitoring task name In order for the measurement to start immediately select Now in the Start Time field and None in the Stop Time field by clicking on the radio push buttons Click on OK to start a monitoring task Displaying Measurement Results while a Monitoring Task is in Progress Measurement data is displayed on screen as soon as it is available from the monitor The data can be displayed in both a graphic window and a numeric window simultaneously The graphic window can display all the measured gas concentrations and the measured atmospheric pressure as graphs simultaneously The concentration curves can be allocated to either of the two axes The scale and concentration units of these axes can be set individually to suit the concentration of the parameters displayed on them The number of curves displayed their colour and their style are defined by you Measurement data can be displ
259. t the correct gas Repeat steps 10 amp 11 until all the filters which are required for the measurements are selected and the correct names are displayed Click in the Sample Integration Time field and select the desired option 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 103 of 280 Chapter 7 14 Advanced settings only Note that a new field has appeared to the right of the gas names Click in the field and define the times for the selected filters Alarms index card L5 16 17 18 19 20 21 22 23 Click on the Alarms index card Click in the Select gas field to display the list of gas names Click on the desired gas name Click in the Select Limit field and type in the desired concentration Online Only Click on the High Alarm Limit 1 or 2 radio push button Online Only Click on the Instantaneous or Rolling Average radio push button If you select Rolling Average click in the field to the right and define the averaging interval for the alarm Online Only Click in the desired Action check boxes Click on Add New or Insert Before if you want to insert the new entry at the top of the list Repeat steps 16 to 22 until all the required alarms are set Note if you wish to remove an alarm select the gas in the Alarms field and click on Remove If you are using the Offline program go to step 24 If
260. t value of the alarm limit for the gases Display Text Acceptable Values Default Value GAS A HIGH ALARM LIMIT 0 1000000ppm Blank 1 n PPM GAS A HIGH ALARM LIMIT Depends on the Blank 1 molecular weight of n the gas Instantaneous Rolling Average PC use Online only these are toggle functions only one of these can be selected The Rolling Average option enables you to prevent the alarm being triggered by sudden small fluctuation in the gas concentrations by using values which are averaged over a defined period of time The averaging time is defined in minutes The acceptable values are 1 to 999 mins and the default value is 10 mins Action this provides you with 4 ways to trigger the alarm One or more of the options can be selected simultaneously PC Beep PC use Online only when an alarm is triggered the PC makes a beeping noise Monitor Beep when an alarm is triggered the monitor makes a beeping noise Monitor Relay 1 amp Monitor Relay 2 selecting these options enable you to connect the alarms to a variety of either audio for example a siren and or visual for example a flashing light alarm systems Active Alarms only the gases which you have selected and activated are shown in this field 7 2 1 Measurement Set up PC Use If you are using the Online program follow the instructions below If you are using the Offline program go directly to step 5 1 Pull down the Task menu Click on New if you
261. task in progress by pressing S1 2 Press S53 to stop the task The text which appears briefly on the screen indicates that the Monitor is aborting the monitoring task and a summary of the monitoring task will appear on the display as soon as the Monitor has aborted the task For example DATA IN DISPLAY MEMORY RECORDED FROM 2004 01 16 09 50 TO 2004 01 16 10 04 4 4 9 Scrolling through Measurement Results after Completion of a Monitoring Task BE6011 16 All measurement data collected during a monitoring task is stored in Display Memory together with the parameters which describe the task a description of the task is given in section 4 4 3 Using the direction push buttons you can scroll through the set up parameters as well as the individual gas concentration measurements results as explained in section 4 3 7 The organisation of data collected during a monitoring task is illustrated in Fig 4 9 This illustration also shows the function of the various direction keys For example enables you to move from the measurement results of one gas to the measurement results of another 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 68 of 280 Chapter 4 Fig 4 9Organisation of the data displayed on the Monitors screen after completion of a monitoring task EB Identification of measurements DATA IN DISPLAY MEMORY RECORDED FROM stored in Display Memory 2004 06 10 08 57 T
262. tected or a warning was given during the measurement The accuracy of the measurement cannot be guaranteed Gas Marks apply to individual filters The Monitor was incapable of calculating this gas concentration After this measurement the filter carousel was found to be out of alignment If the misalignment is only slight then accuracy of the measurement has not been affected but the accuracy of such a measurement can not be guaranteed y The gas concentration measured during this measurement cycle exceeded the user defined alarm limit resulting in an alarm being triggered To see which gas the Common Mark adheres to open a numeric window 8 3 Numeric Window This window can display all the measurement data simultaneously Gas Measurement data can be displayed as instantaneous values or as average values This window also displays several MARKS These appear if something happens during the measurement or an alarm is triggered If any events have been added during the monitoring task these are also displayed here These marks and events are always displayed with the Online program but can be hidden with the Presentation program See Events index card in section 8 2 1 and section 8 3 1 When using the Online program the latest measurement results are always displayed at the bottom of the column Previous measurement results roll upwards disappearing from view at the top of the column when the defined int
263. ted out using the button Data can be printed out in three different blocks 1 Measurement this block contains the measurement data displayed on the Monitor screen during the printing operation it also provides the set up parameters for the displayed monitoring task see section 9 2 2 Set Up this block contains active set up parameters 3 Calibration this block contains the optical filter factors calibration factors and all other information related to the calibration of the optical filters installed in the Monitor Note if you want to use the interface ports for data transfer other than to a printer or a PC equipped with the Gas Monitoring Software 7304 an Interface Manual which explains the protocol messages in details is available Printer Cables To connect the cables 1 Ensure that both the Monitor and the printer are switched off at the mains Failure to do so may result in your equipment being damaged 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 180 of 280 Chapter 12 12 3 12 3 1 2 Locate the desired port at the back of the monitor The ports are labelled RS 232 and IEEE 3 Push the cable connector on to the correct socket and secure it firmly using the securing screws 4 Locate the input port on the printer 5 Push the connector at the other end of the cable on to this socket and secure it firmly using the securing sc
264. tep 13 and 14 to enter the desired alarm levels 19 Press L this returns you to the top of the Configuration Set up Tree 14 3 4 Setting up the Monitor to Print a Data Log This is only necessary for those of you who do not use the Gas Monitoring Software 7304 to calibrate the Monitor During calibration the calibration gas is drawn into the cell and the microphones measure the signal produced by the gas s absorption of light from the infra red light source AS soon as a measurement is made it is displayed on the Monitor s screen Measurement results are constantly updated on the display but only one set of meas urement results are displayed at a time and no scrolling facility is available to look at previously displayed results Therefore your Monitor should be set up to print a Data log This is described fully in section 12 5 14 3 5 Warming Up the Monitor BE6011 16 The infra red light source is very hot and the temperature in the analysis cell thus increases as calibration measurements proceed Conditions within the cell tend to stabilise more quickly once the temperature inside the analysis cell is 15 C above the ambient room temperature We therefore suggest that you set up the Monitor to Sample continuously for a period of 30 40 min to warm up the analysis cell before a calibration task is started This will reduce the time required for calibration To warm up the Monitor you need to set up a monitoring task
265. ter B is chosen which transmits light with a wavelength which is most strongly absorbed by gas B and less strongly by gas A this is illustrated by the lower absorption spectrum shown in Fig 14 3 During cross interference calibration two sets of measurements are performed BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 201 of 280 Chapter 14 14 3 14 3 1 Monitor PC Use 1 The signal in the cell is measured using filter A and the filter B when a known concentration of gas A is in the analysis cell The ratio of these two signals is directly related to gas A s relative absorption of light at these two wavelengths upper spectrum in Fig 14 3 This ratio is a constant and is a measure of Gas A s Interference on filter B 2 The signal in the cell is measured using filter A and filter B when a known concentration of gas B is in the cell The ratio of these two signals is directly related to gas B s relative absorption of light at these two wavelengths lower spectrum in Fig 14 3 This ratio is a constant and is a measure of Gas B s Interference on filter A By measuring the ratios described above the Monitor is able to compensate any measurement made with filter A for any interference signal produced by the presence of gas B in the cell and vice versa This procedure is known as cross compensation Tasks Bef
266. ters which are available for gas names Characters available for Gas Names AaBbCcDdEeFfGgHhIiJjkkLIMmNnOoPpQqRrSs TtUUVVXxXYyZz 2 0 P lt bI lt gt 123456789 AaBbCc etc Pre defined you are able to select a parameter using the select push buttons when there are three or less options or by scrolling through a pre defined list using the direction push keys The parameters in the lists are given in more detail in the relevant sec tions of this manual Current Time in the monitor is synchronized to match the time and date of the internal clock in the PC when the two are connected together However it is possible to adjust the monitors date and time using the front panel push buttons This is described in full in section 5 4 1 6 2 Choosing Parameters PC Use Parameters can be set in three ways Using the numbers illustrated in Fig 6 1 BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 89 of 280 Chapter 6 Parameters in a Select Field By clicking in the field a list of pre defined options appear By scrolling through this list the desired parameter can be selected Fig 6 2 Illustration of the different parameters la x Task Sequence Edit View Window About Djs S S Fl elute csc Ae ala el ER 8 Sampling Gas Alarms Select gas Carbon monoxide 7 Limit Carbon monoxide Select limit Water Vapour
267. tic Field Gas Monitor Page 46 of 280 Chapter 4 Fig 4 6 The Sequence Settings dialogue 18 x Task Sequence Edit View Window About Dis Bl S FY l El Ue Slo el Ea 2 Graphic Window 1 Sequence Settings Sequence G Sampling Gas Alarms Sampling Mode F Gas Monitor Display es Conti ee Fann ee I Average HH MM Sampling Interval H w0 HE 2 min t f Current Air Pressure a 96 12 31 96 12 31 96 12 31 96 12 31 G 1020 40 mBar 23 00 00 23 10 00 23 20 00 23 30 00 Tube Length oa C Fixed Time Chamber H Bs Tube H 3s Compensation IV Water Interference I Cross Interference num Alarm index card 4 3 4 BE6011 16 7A Select the Alarm index card Ensure that no alarms are selected in the Alarm box If any alarms are selected click on the name and then click on Remove 8 When all the settings are correct click on OK The monitoring task is now set up This information is not transferred to the monitor until you start monitoring Starting a Monitoring Task Note before a monitoring task can be started the Monitoring Task Settings must be defined see section 4 3 3 This section will explain how to perform a monitoring task for example monitoring task number 1 which was set up in section AC oF If you have just set up the monitoring task using the On line option and the monitoring task is still open proceed from step 1 If the monitoring task is no
268. tion factor The concentration offset factors calculated during zero point calibration of the filters are related to the cell noise measured in the cell when each of the filters is being used If any calibration data is uncertain or unacceptable an error message marked by an asterisk will appear on the screen after the calibration factors have been calculated Whenever an asterisk is shown on the screen further information about the condition of the Monitor can be obtained by pressing INFO Chapter 16 lists all the error messages connected with uncertain calibration results and gives an explanation of their significance so that the user can ascertain what action to take if such messages are displayed after calibration Humidity Calibrations PC Use The water vapour filter has two different functions Its most important function is to enable any measured signal to be compensated for water vapour interference Its other function is to measure the absolute concentration of water vapour in air samples If you only wish to use the water vapour filter to compensate for water vapour interference then it only has to be zero point calibrated If you wish to use it to measure the absolute 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 230 of 280 Chapter 14 concentration of water vapour in air samples then it has to be zero point calibrated and span calibrated When the Humidity C
269. toacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor BE6011 16 Chapter 14 e It allows you to have a visually check that there is a net flow of gas out of the teflon tube attached to it during the whole calibration procedure The flow ball can be seen to be bouncing on the upward flow of air out of the meter If the pressure of the gas from the cylinder is too low at any time then the flow ball will just remain seated at the bottom of its tube This condition must be avoided because atmospheric air will be drawn into the teflon tube system via the flow meter and cause dilution of the calibration gas This will affect the accuracy of your calibration e It functions as an escape valve When the pressure of the gas in the tubing becomes greater than atmospheric pressure gas flows out to the atmosphere via the flow meter This ensures that the gas entering the analysis cell is as close to atmospheric pressure as possible and this prevents damage to the very sensitive microphones in the analysis cell WARNING The analysis cell of the monitor is equipped with sensitive microphones and therefore NO direct connection between the Monitor s air inlet and the pressure valve on a gas cylinder is allowed Under NO circumstances should the pressure of the air in the analysis cell be allowed to exceed 0 1 bar above the ambient pressure 1 Attach the teflon tubing to the Air Inlet Filter at the back of the monitor This
270. toacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 187 of 280 Chapter 13 The only regular maintenance required for the 1314 1412 is Calibration approximately every 3 months see Chapter 14 Changing the fine air filter paper in the internal and external air filtration units see section 13 1 Cleaning of the filter in the ventilation unit see section 13 2 13 1 Changing the Fine Alr filters The monitor is equipped with an tnternal filtration unit The internal unit is mounted on the air inlet on the back panel This is shown in Fig 13 1 Fig 13 1 The internal air filtration unit mounted on the back panel of the monitor The internal air filtration unit can be removed simply by unscrewing the unit by hand The unit is shown in Fig 13 2 Fig 13 2 The internal air filtration unit BE6011 16 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 188 of 280 Chapter 13 BE6011 16 Inside the unit a fine 10um filter paper removes fine dust particles and other suspended matter from air samples before they reach the measurement chamber of the Monitor Whenever the Monitor needs to be calibrated we recommend that the fine filter paper in the internal air filtration unit is changed before you calibrate The fine filter paper in the internal air filtration unit must be changed at least twice a year and more frequently if
271. toms you will find the calibration data for the different set ups filter configurations Calibration 710 002 Task Sequence Values Bank Edit View Window About les 25 8 Ol i Be a ah slal el E el C Graphic Window 1 iol x A Carbon dioxide uv T Temperature C E Sulphur Hexaflouride p W Water Vapour pY Download Banks to Gas Monitor 18 06 04 710 0024 04 710 18 06 04 710 0028 Your Gas Monitoring software 7304 is now loaded with the calibration data and is now ready for use Change of the configuration set up of optical filters can only be performed from the front panel of the instrument 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 31 of 280 Chapter 2 If the filter configuration has been changed after the back up was performed the following message will appear on the screen Calibration x AN Filter configuration has changed in Sas Monitor Reloading Filter info now Select OK Filter info is retrieved from the instrument Before using Download Banks to the Gas Monitor it is necessary to set up the right configuration in the Gas Monitor from the front panel see section 14 3 3 If there is a conflict between the set up of optical filters in the monitor and the calibration data in the Back up file the following warning appears Calibration A Current filter configuration is differ
272. troduction When the monitor is started up in the normal way that is by switching on the AC Mains power switch on the back panel the monitor responds by performing a partial reset A partial reset is also performed if during operation the monitor is switched off and is re started in any of the following ways e If the Monitor stops operating due to an AC mains power failure and then re starts itself automatically when power is restored to it e If the user stops operating the Monitor by switching it off using the AC mains power switch on the back panel and then re starts it by using the same switch Users can also partially reset the Monitor by using the RESET push button on the front panel see section 5 2 3 A Partial Reset of the Monitor When the Monitor performs a partial reset a number of self tests are automatically performed The types of tests performed depend only upon the time which has elapsed since the Monitor was last Switched on e If more than 10 mins have elapsed since the Monitor was Switched on it will perform the software data integrity and hardware tests when switched on again e If less than 10 mins have elapsed since the Monitor was switched on it will perform only the data integrity tests when switched on again There are essentially 3 types of self tests which can be performed during a partial reset a software test a data integrity test and a hardware test It takes the Monitor only
273. ub on the back panel of the Monitor Push one end of the Teflon tubing through the non threaded end of the nut Hold the end of the tubing between the fingers and gently push the tubing over the end of the Monitor s air inlet stub as far as it will go Note if the tubing is bent broken during this procedure remove the tubing from the stub and repeat this step using an undamaged length of tubing Screw the threaded nut firmly onto the end of the air inlet stub Fig 4 3 Attaching tubing to the air inlet stub and the external filter Purge TELL P A p Ne J Char regul Do not touch inside of air filtration unit Use tweezers and gloves when changing filter paper 3 Attach the other end of the sampling tube to the external air filter which is provided as an optional accessory 1314 Photoacoustic Multi gas Monitor 1412 Photoacoustic Field Gas Monitor LumaSense Technologies A S Page 42 of 280 Chapter 4 4 3 Familiarization with the Monitor using Gas Monitoring Software 7304 4 3 1 4 3 2 BE6011 16 Setting the Internal Clock The internal clock is set automatically when the monitor is connected to a PC and the Gas Monitoring Software 7304 is started The internal clock in the monitor is synchronised with the time and date from the PC clock If either of these entries is incorrect then they must be corrected via the PC using standard Windows procedures Setting Units A
274. ult values An error has been detected in the Monitor s Background Memory so the Monitor automatically deletes all data stored in this Memory An error has been detected in the Monitor s Display Memory so the Monitor automatically delete all data stored in this memory An error has been found in the data stored in the Monitor s internal memory data stored in this memory cannot be read or altered by the user so the Monitor automatically corrects any errors found in this memory An error has been found in the data stored in the Monitor s source memory so the Monitor automatically give stored parameters default values An error has been found in the value parameters stored in the Configuration and or Format branches of the Monitor s set up tree and therefore the Monitor has automatically given these parameters default values An error has been found in the value parameter stored in the Monitoring Task branch of the Monitor s set up tree and has automatically given these parameters default values 1412 Photoacoustic Field Gas Monitor A new battery has been installed dy 2 A defective back up battery A defective Working Memory RAM or Source Memory EEPROM A Software fault A defective back up battery A defective Working memory RAM A software fault A defective back up battery A defective Working Memory RAM A software fault A defective back up battery A defective Working
275. und memory This push button has two functions It allows you to perform the following two functions e Acknowledge any message which may appear on the display screen during operation of the Monitor e Obtain more detailed information about the condition of the Monitor at any particular moment of time if such information exists By pressing this push button measurement results in the Display memory of the Monitor can be printed out The lamp above this push button is lit while measurements are being printed and the display will show PRINTING MEASUREMENT DATA until all data has been printed out In this mode you are able to enter the Set Up Tree of the Monitor In set up mode the user is able to program the Monitor to perform almost any kind of measurement and amongst other things enter data about the optical filter s which are installed in the Monitor select different measurement parameters choose how measurement re sults should be formatted in print outs choose the interface and communication codes which are necessary 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 78 of 280 Chapter 5 to print data set the internal clock of the Monitor and choose the self tests the Monitor should perform When the Talk Listen LED is lit this means that there is activity on one of the interfaces 5 3 Starting up or Restarting the Monitor oe Pe 5 3 2 BE6011 16 In
276. ur filter is only necessary if you wish to measure the absolute concentration of water vapour in air samples If the water vapour filter is not span calibrated you will not be able to measure the concentration of water vapour in gas samples during a monitoring task 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 253 of 280 Chapter 14 BE6011 16 Before the water vapour filter can be span calibrated it has to be zero point calibrated that is a concentration offset factor for the water vapour filter must be stored in the Monitor s calibration data block During span calibration of the water vapour filter it is necessary to attach a supply of zero gas containing a known concentration of water vapour to the Monitor As explained in the Humidity interference Calibration Section 14 9 2 it is important to use water vapour whose concentration is below the saturated vapour pressure of water vapour at the temperature of the room where calibration is to be performed otherwise water vapour will condense out in the analysis cell and damage it Before setting up the span calibration of the water vapour filter go into Set Up mode and select Tdew as a humidity unit Then when you have to enter the concentration of the water vapour you will use during calibration Always use water concentrations at least 2 C below the ambient room temperature For example if the ambient room temper
277. ured gas concentration stored in Display Memory when Store Measurement History is selected a statistical analysis is performed which provides a summary of the stored measurement results The MAX maximum MIN minimum gas concentrations are displayed and the u Mean or Linear Average and o Standard Deviation values are calculated and displayed A description of these statistical terms can be found in section 9 2 1 During the performance of a monitoring task the statistical analysis is updated constantly List of Individual Measurement Results Each of these displays provide the date and time each measurement cycle was performed and the concentration of the gas whose name appears on the screen In some cases an asterisk will be shown 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 147 of 280 Chapter 9 BE6011 16 alongside the gas vapour concentration When such an asterisk is shown press the button Text will appear on the screen to indicate why this particular measurement has been marked The number which is shown on the display between time and concentration is only filled in after completion of a monitoring task The number indicates the order in which the measurements were made The oldest stored measurement is always given the number 1 and the following measurements are numbered se quentially Overview of the Monitoring Task These displays prov
278. urement result is available the screen text illustrated above is replaced by a screen displaying the measurement results for example the following W wu 11 3uV o V 1 38 6 C PRESS ENTER WHEN RESULTS ARE STABLE As soon as measurement results are available they not only appear on the display see Fig 14 17 but are automatically printed out on the printer if the Monitor has been set up to print a data log see section 12 5 Remember to turn off the data log when the calibration is complete Fig 14 17 Example of data displayed during a calibration the text below the display describes the displayed data W XXXnV XXX X C This is the temperature in the analysis cell during the measurement This is position This is the of the optical standard deviation of n measurements filter whose results are displayed This is the number of measurements This is the average of the last n measurements stored by the made during monitor this calibration 893261 le Each time a sample of gas is drawn into the analysis cell the Signal is measured using all the installed optical filters and the water vapour filter W but due to lack of space on the display the Monitor only displays the signal measured using the water vapour filter You cannot scroll through the measurements The data log print out however shows the signal measured using all installed filters as well as the water vapour filter A maximum of 6 me
279. urements are still stored When 8 measurements have been completed the number n will also show 6 because the results of the first and second measurements have been overwritten by the 7 and 8 measurement results and so on 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 248 of 280 Chapter 14 14 11 4 BE6011 16 2 Let the Monitor continue measuring the span gas A until the temperature is stable Look at the print put of the average and standard deviation measurements for 1 the water vapour and 2 the filter A When these values have stabilised for both filters span calibration measurements do not need to continue 3 Press M This causes the following text to appear on the screen A p 123 8 uV o 617 nV 6 40 4 C PRESS ENTER WHEN RESULTS ARE STABLE These results have been shown on the data log print out If they have stabilised continue to the next Step 4 Press Ei The text CALCULATING CALIBRATION FACTORS PLEASE WAIT appears on the screen The Monitor only uses the last six measurement results when calculating any calibration factor The conversion factor in mg m3 per volt which is calculated during a span calibration is the factor which allows the Monitor to relate the signal produced by the gas to the concentration of gas in the cell The cross interference factors which are calculated during cross compensation calibration are those fa
280. y Let us suppose that we STORE the data in location 2 of Background Memory This means that Background Memory is now 50 full see Fig 11 5 Task No 3 The data occupies 40 of the total capacity of the Display Memory Let us suppose that we STORE the data from this task in location 3 of Background Memory Background Memory is now 90 full see Fig 11 5 Task No 4 The data occupies 10 of the total capacity of the Display Memory Let us suppose that we STORE the data from this task in the Background Memory let us say it is stored in location 4 Background Memory is now 100 full see Fig 11 5 The Background Memory has now been filled up by the data from the four monitoring tasks described above even though location nos 5 10 inclusive have not been used The user will not be able to STORE any more data in Background Memory because there is no Space available for it Data in Background Memory can however be deleted to make space for the storage of new measurement results see section 11 3 3 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 174 of 280 Chapter 11 Fig 11 5 Storing data from 4 different consecutive measurement tasks in the Background Memory Monitoring Task No 1 20 DISPLAY MEMORY Monitoring Task No 2 30 0 Monitoring Task No 3 40 Monitoring Task No 4 STORE 1 30 20 BACKGROUND MEMORY LOCATIONS S USED 20 OF MEMORY US
281. you are using the Online program and you have completed all the steps click on OK the system is now ready to start measuring see section 7 4 1 Up Download index card Offline Only BE6011 16 24 25 26 Click on the Up Download index card Click on the Download Settings softkey This will download the settings in the Sequence Settings dialogue to the monitor When the transfer is complete Click on the Close softkey to exit the Offline program 1314 Photoacoustic Multi gas Monitor LumaSense Technologies A S 1412 Photoacoustic Field Gas Monitor Page 104 of 280 Chapter 7 7 2 2 You are now ready to start measuring see section 7 4 2 Measurement Set up Stand alone Use The philosophy of the instructions is described in Chapter 3 To enter the Set Up Tree press SET UP and the monitor displays the following screen text SELECT SET_UP BRANCH MEASUREMENT mel N AE CONFIGURATION 1 Press S1 to enter the MEASUREMENT branch The new text displays two branches Monitoring Task branch BE6011 16 2 Press S1 to enter the Monitoring Task branch The following text is displayed MONITORING TASK SET UP NUMBER 1 PRESS ENTER TO CHANGE VALUE 3 Up to 10 different monitoring tasks can be defined here These are labelled from 1 to 10 Use the direction push buttons to select the desired set up number and move on to the next display 4 Use the select push buttons to define if you want to sample conti

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