Home

MiniRAE Plus - Industry Surplus Australia

1. A 1 APPENDIX B FLOW CHART OF SURVEY MODE B 1 APPENDIX C RESPONSE INFORMATION 000 cece eeeeeteeneeeee C 1 APPENDIX D QUICK REFERENCE GUIDE D 1 THIS DEVICE IS NOT INTENDED TO DETECT COMBUSTIBLE LEVELS OF GASES THIS DEVICE IS CLASSIFIED FOR USE IN ATMOSPHERES CONTAINING COMBUSTIBLE LEVELS OF GASES CET APPAREIL CEST NE PAS INTENDER POUR DETECTER DES NIVEAUX DE COMBUSTION DES GAZ CET APPAREIL EST CLASSIFIE POUR USAGE MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL DANS DES ATMOSPHERES CONTENANT DES NIVEAUX DE COMBUSTION DES GAZ MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL WARNING DO NOT PROCEED BEFORE READING THIS MANUAL MUST BE CAREFULLY READ BY ALL INDIVIDUALS WHO HAVE OR WILL HAVE THE RESPONSIBILITY FOR USING MAINTAINING OR SERVICING THIS PRODUCT The product will perform as designed only 1f it is used maintained and serviced in accordance with the manufacturer s instructions CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK TURN OFF POWER BEFORE REMOVING THE SENSOR CAP FOR SERVICE THE SENSOR CAP PROVIDES AN ELECTROSTATIC SHIELD NEVER OPERATE THE UNIT WHILE THE CAP IS REMOVED TO REDUCE THE RISK OF IGNITION OF HAZARDOUS ATMOSPHERES RECHARGE BATTERY ONLY IN AN AREA KNOWN TO BE NON HAZARDOUS NE CHARGER LES BATTERIES QUE DANS EMPLACEMENTS DESIGNES NON DANGEREUX vi MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL THE MODEL PGM 76 EQUIPMEN
2. 000000 4 10 4 7 1 Zero Gas Calibration 4 11 4 7 2 Enter Standard Calibration GaS V alU srann an annn 4 14 4 7 3 Standard Reference Gas Calibration c ccccccecsesseceeeeeees 4 16 4 7 4 Alternative Calibration Method Seemann 4 20 4 7 5 Calibration for Other Gases 4 22 4 8 Clear Datta scccccsccscssssssesncrsesscssesssnees 4 25 4 9 Set Hour and Minute cccccceceeeeeees 4 26 4 10 Set Month and Date cccecccccceceeeees 4 27 4 11 Set Security Level reunis gests Gy 4 28 4 12 Change Password 4 30 5 0 PROGRAMMING IN SURVEY MODE 5 1 5 1 Menu Options sxc 23 iene eseevee ee ee 5 2 5 2 Keys for Programming Task 0e 5 4 5 3 Entering into Programming Task 5 5 5 4 Select Site Numbet cccccccessesseeees 5 6 MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL 5 5 Select Calibration Data 0 eceeeereees 5 7 5 6 Calibration of MiniRAE Plus 5 8 5 7 Set Sampling Period ee eeeeeeeeseeeeeteee 5 9 5 8 Clear D ta nnsa o AE 5 10 5 9 Set Low Alarm Limit cc eeceeeerees 5 11 5 10 Set High Alarm Limit 0 ceeeeseeeteeee 5 12 5 11 Set Hour and Minute 0 ccceeeeeeeeee 5 13 5 12 Set Month and Date ccccccceeeeennees 5 13 5 13 Select Datalog Option cee eeeeeeeeeee 5 14 5 14 Select Data Type Option eee eee 5 16 6 0 COMPUTER INTERFA
3. 1 manual sampling option in this option users have to press enter key to start each sampling period When a sampling period is completed the datalogging operation will stop 2 continuous sampling option in this option users press enter key once to start the first sampling period At the end of each sampling period next sampling period will start automatically The datalogging operation will not stop until another enter key is pressed This option is very useful for un attended data sampling operation The datalog option has to be set up by ProRAE 76 software in PC See section 6 for details on how to install the ProRAE 76 software on PC how to interface the MiniRAE Plus instrument to PC and how to select datalog option from PC Here is a brief summary on how to select datalog option in PC SECTION 5 PROGRAMMING IN SURVEY MODE Step 1 From the main menu of the ProRAE 76 software Open the Survey Mode configuration file survey CFG from the File sub menu then choose Instrument Setup function from the Options sub menu The PC display will show a dialog box as shown in Screen 6 10 Step 2 Move cursor to the datalog option section of the menu and choose one of the two options by clicking the mouse on one of the two radio buttons Step 3 After the instrument configuration is completed send it to the instrument as described in section 6 9 The appropriate datalog option will be setup correctly in the instrument now
4. Note if the security level of the unit is set to no change allowed level 0 step 2 will not have any effect on the current hour and minute Users can view the time but can not alter the time SECTION 4 PROGRAMMING IN HYGIENE MODE 4 10 Set Month and Date In Hygiene Mode users are allowed to change the month and date of the built in real time clock if Set month and date option is the 10th menu option in Table 4 1 Display shows dA mm dd with the left most digit flashing where mm is the current month and dd is current date To modify this date starting from the left most digit use up or down arrow key to change the digit value and enter key to confirm the digit the flashing digit will then move on to next digit to its right Repeat this process until all 4 digits of the new month and date is entered To preserve the current month and date press menu key at step 1 or in the middle of step 2 the unit will abort the month and date entry and exit the programming task Note if the security level of the unit is set to no change allowed level 0 step 2 will not have any effect on the current month and date Users can view the date but can not alter the date SECTION 4 PROGRAMMING IN HYGIENE MODE 4 11 Set Security Level In Hygiene Mode authorized users are allowed to set the security level from the PC so that three levels of different data protection can be setup for the operato
5. SECTION5 PROGRAMMING IN SURVEY MODE 5 14 Select Data Type Option In Survey Mode authorized users are allowed to select one of the following two different data type to be stored from the PC 1 peak data option in this option the peak value during each sampling period is stored For example if the sampling period is set to be 60 seconds then the maximum reading during each 60 seconds sampling period will be stored 2 average data option in this option the average value during each sampling period is stored For example if the sampling period is set to be 60 seconds then the average value of 60 readings during each 60 seconds sampling period will be stored The data type option has to be set up by ProRAE 76 software in PC See section 6 for details on how to install the ProRAE 76 software on PC how to interface the MiniRAE Plus instrument to PC and how to select datalog option from PC Here is a brief summary on how to select data type option in PC Step 1 From the main menu of the ProRAE 76 software Open the Survey Mode configuration file survey CFG from the File sub menu then choose Instrument Setup function from the Options sub menu The PC display will show a dialog box as shown in Screen 6 10 5 16 SECTION 5 PROGRAMMING IN SURVEY MODE Step 2 Move cursor to the data type option section of the menu and choose one of the two data type options by clicking the mouse on one of the two radio buttons Ste
6. message to indicate that all the data is being cleared SECTION 2 OPERATION OF MINIRAE PLUS 2 12 Diagnostic Power on Sequence The MiniRAE Plus Professional PID Unit offers a special diagnostic power on sequence to allow user to read raw or un calibrated instrument readings during zero gas calibration procedure This feature can provides additional information to users regarding the sensor performance This is accomplished by pressing up key first holding it down and then pressing on key to turn on power Note using the special diagnostic power on sequence the unit will perform normally except during zero gas calibration procedure see section 4 7 1 The display will show a raw reading instead of the ppm reading Typically the reading should be between 330 0 to 370 0 When exposed to a calibration gas the reading should go down quickly The reading can be anywhere between 0 0 to 300 0 If the reading does not change when exposed to a calibration gas then it is an indication that the lamp is very weak or the sensor module is defective SECTION 2 OPERATION OF MINIRAE PLUS 2 13 Disconnect Battery The MiniRAE Plus Professional PID Unit provides a mechanical switch to allow user to disconnect the battery from the unit This is to prevent the battery from being deeply discharged when the unit is placed on the shelf or during shipment To disconnect the battery open the rubber cover at the rear side of
7. Professional PID Unit SECTION 7 THEORY OF OPERATION A sampling pump continuously draws air sample into the ionization chamber The ionization chamber for the MiniRAE Plus Professional PID unit is constructed as a small cavity in front of the UV lamp The electrode is made of wired mesh so that the high energy UV light can shine through the mesh and excite the gas molecules when they across the face of the UV window The ions collected on the electrode are measured by an electrometer A single chip microcomputer is used to control the operation of the lamp alarm buzzer LED sampling pump power supply and the electrometer It measures the electrometer readings and calculates the gas concentrations based on calibration to a known reference gas A 7 digit LCD display is used to show the readings The user interacts with the unit through 5 keys on the front panel The unit is powered by a rechargeable lead acid batteries A built in charging circuit allows the batteries to be charged directly from a 12 VDC source SECTION 8 MAINTENANCE 8 0 MAINTENANCE As shown in Figure 8 1 the major items of MiniRAE Plus Professional PID Unit that require periodic maintenance are e Battery e Probe Assembly e Sensor module Lamp Figure 8 1 Main components of MiniRAE Plus Professional PID SECTION 8 MAINTENANCE 8 1 Battery Charging and Replacement When the display flashes bAt message the battery requires recharging The batter
8. different readings instantaneous gas concentration STEL TWA peak and battery voltage Here is a brief explanation of each reading 1 The instantaneous reading is the gas concentration in parts per million ppm The reading is updated once a second and is shown as xxx x in the LCD display without any arrow cursor or character display Note in Survey Mode a two digit site number will also be displayed together with the instantaneous reading as 00 xxx x The site number starts from 00 and ends at 49 2 The STEL reading is the last 15 minute average reading of the gas concentration The reading is updated once a minute and is shown as xxx x with a small arrow cursor pointing to the STEL label on the LCD window 3 The TWA reading in Hygiene mode is the accumulated reading of the gas concentration divided by 8 hours since the data was cleared last time The reading is updated once a minute and is shown as xxx x with a small arrow cursor pointing to the TWA label on the LCD window In Survey mode the TWA reading is the average gas reading during the previous sampling period 4 The peak reading in Hygiene mode is the maximum reading of the gas concentration since the data was cleared last time SECTION 2 OPERATION OF MINIRAE PLUS The reading is updated at one second interval and is shown as Xxx X with a small arrow cursor pointing to the PEAK label on the LCD window In Survey mode the peak reading is the peak
9. k STEL TWA PEAK A Vv Figure 2 2 Key pad and display of MiniRAE Plus SECTION 2 OPERATION OF MINIRAE PLUS Table 2 1 Function in Normal Operation on Toggle on off the power up Toggle on off the back light down Choose display readings enter Confirm to turn off the power menu Enter into programming task Caution entering programming task will interrupt normal gas monitoring operation of the unit Note enter key is also used to tum off buzzer during Hygiene Mode operation and to start stop datalogging operation in Survey Mode see section 2 8 and 2 9 for details _ menu Key is also used in conjunction with the on key to clear previously saved data in Hygiene Mode during a special power on sequence see section 2 11 for details SECTION 2 OPERATION OF MINIRAE PLUS The MiniRAE Plus Professional PID includes a 7 digit LCD display with 4 labels of STEL TWA PEAK and PPM marked on the window as shown in Figure 2 2 The display will show the following five types of readings Real time gas concentration in ppm Short term exposure level STEL of the gas Time weighted average TWA value of the gas concentration in ppm Peak gas concentration in ppm Battery voltage in volt from 5 3 to 6 4 V Note the 15 minute STEL reading is only available in Hygiene Mode operation _ the TWA reading is based on fixed 8 hours average value define by OSHA in Hyg
10. most digit flashing where xxx x is the previously stored high alarm limit 2 To modify this limit starting from the left most digit use up or down arrow key to change the digit value and enter key to confirm the digit the flashing digit will then move on to next digit to its nght Repeat this process until all 4 digits of the new high alarm limit are entered Note if the high alarm limit is lower then the low alarm limit the data entry is aborted and the previously stored high alarm limit will be restored 3 To preserve the previously stored high alarm limit press menu key at step 1 or in the middle of step 2 the unit will abort the high alarm limit entry and move to the next menu option SECTION 5 PROGRAMMING IN SURVEY MODE 5 11 Set Hour and Minute In Survey Mode users are allowed to set the hour and minute value of the real time clock The procedures for setting the hour and minute value are identical to that of Hygiene Mode Please refer to section 4 9 for operation details 5 12 Set Month and Date In Survey Mode users are allowed to set the month and date value of the real time clock The procedure for setting the month and date value is identical to that of Hygiene Mode Please refer to section 4 10 for operation details SECTION5 PROGRAMMING IN SURVEY MODE 5 13 Select Datalog Option In Survey Mode authorized users are allowed to select one of the following two different datalog options from the PC
11. 9 pi Note 1 xxxx is the previously stored data SECTION5 PROGRAMMING IN SURVEY MODE 5 2 Keys for Programming Task The operation of the five keys during the programming task in Survey Mode is identical to that of Hygiene Mode Table 5 2 Function in Programming Task on This key does not function during programming task up Increment numerical value for data entry down Decrement numerical value for data entry enter Confirm menu selection menu Exit current menu selection and go to next menu option SECTION 5 PROGRAMMING IN SURVEY MODE 5 3 Entering into Programming Task CAUTION Do not perform programming task in the potentially hazardous environments that require continuous protection The real time monitoring of gas concentration will be interrupted during programming task 1 The MiniRAE Plus Professional PID Unit should already be turned on already before entering the programming task If it is not on refer to section 2 4 for power on procedure 2 Press menu key to enter programming menu 3 Note if the unit is in the middle of datalog a d will be displayed next to site number it will not respond to the menu key This is to prevent entering the programming task while the datalog operation has not been completed Wait for the datalog operation to complete or force the datalog operation to stop by pressing enter key then enter programming task again SECTION
12. Clean lamp sensor module Replace new lamp Calibration Reasons No standard gas input error message Low sensitivity to cal gas Solutions Make sure standard gas flows into inlet probe Change cal gas APPENDIX A FLOW CHART OF HYGIENE MODE OPERATION APPENDIX A FLOW CHART OF HYGIENE MODE OPERATION NORMAL OPERATION real OFF light on STEL passwordturn off G buzzer light off TWA a unit off N T Program peak Task 2 Z Q E A 1 APPENDIX A FLOW CHART OF HYGIENE MODE OPERATION APPENDIX A FLOW CHART OF HYGIENE MODE OPERATION PROGRAMMING TASK STEL limit TWA limit menu peak limit menu zero gas cal menu enter std value menu std gas cal menu clear all data menu change time menu change date menu A 2 enter enter enter enter enter enter enter enter enter SA XXxX x A XXxX x PA Xxx x CO xxx x Clu xxx x Cl xxx x Clr All Hr xx xx dA xx xx APPENDIX B FLOW CHART OF SURVEY MODE OPERATION APPENDIX B FLOW CHART OF SURVEY MODE OPERATION NORMAL OPERATION real ao OFF lighton TWA start dlog D o Q light off peak Program stop dlo a unit off N S battery real APPENDIX B FLOW CHART OF SURVEY MODE OPERATION APPENDIX B FLOW CHART OF SURVEY MODE OPERATION PROGRAMMING TASK select site SItE xx menu select cal da
13. Hygiene Mode 50 site readings in Survey Mode 100 to 40 C 14 to 104 F 0 to 100 relative humidity non condensing SECTION 1 GENERAL INFORMATION This page is intentionally left blank SECTION 2 OPERATION OF MINIRAE PLUS 2 0 OPERATION OF MINIRAE PLUS The MiniRAE Plus Professional PID Unit is a portable organic vapor monitor sampler It gives the real time measurements and activates alarm signals whenever the exposure exceeds preset limits Prior to factory shipment the MiniRAE Plus is preset with default alarm limits and the sensor is pre calibrated with 100 ppm Isobutylene gas After receiving the unit first turn on the battery switch on the back of the unit Then charge the unit for at least 24 hours to fully charge the battery The unit is ready for immediate operation SECTION 2 OPERATION OF MINIRAE PLUS 2 1 Physical Description Figure 2 1 shows the main components of the MiniRAE Plus Professional PID Unit which includes 5 keys for user to interact with the unit power key and 2 operation keys for normal operation two programming keys for setting up the unit LCD display with back light to show real time and calculated measurements Buzzer and red LED for alarm signal whenever the exposures exceed preset limits Probe assembly including gas inlet tube and sensor cap to draw air sample Battery charging jack for connection to AC or DC charging adapter and a battery switch to disconnect batt
14. IN HYGIENE MODE 4 7 1 Zero Gas Calibration The organic vapor zeroing kit see Figure 4 1 is supplied to perform zero gas calibration This kit consists of e Calibration adapter to link up with the gas inlet tube of the Professional PID Unit e Charcoal filter to exclude any organic gas Figure 4 1 Zero gas calibration setup SECTION 4 PROGRAMMING IN HYGIENE MODE Zero Gas Calibration Procedure 1 Zero gas calibration option is the 5th menu option in Table 4 1 Display shows CO xxx x where xxx X is the gas reading based on current calibration of the instrument Note this reading may not be zero due to back ground gas concentration dirty charcoal filter or instrument drift 2 Insert the zero gas adapter into the gas inlet tube of the Personal PID Unit as shown in Fig 4 1 3 The sampling pump draws air sample into the sensor chamber through the charcoal filter of the organic zeroing kit The air entering the sensor chamber should be free of any organic vapors Display then shows the reading of the gas free of organic vapor Again this reading may not be zero due to dirty charcoal filter or instrument drift SECTION 4 PROGRAMMING IN HYGIENE MODE 4 If this reading is not zero press enter key to zero it If the reading still shows a small value after a few seconds press enter key again to zero it Repeat this process until the reading is stabilized around zero or 0 1 ppm This completes the zero gas
15. a new start or stop hour for viewing which is outside the actual datalog start and stop time an error message will appear Users should always set the start and stop hour for viewing to be within the actual datalog start and stop hour Users also can choose the Select Plot Type function from the Options sub menu to change the type of graphic display Screen 6 5 shows the dialog box for selecting plot type The default plot type is Area plot Screen 6 5 Select Plot Type Dialog Box SECTION 6 COMPUTER INTERFACE FOR MINIRAE Select Plot Type Line plot symbol Area plot 3D Area plot Note in Survey mode the x axis of the graphic data display may not reflect the actual time if the data was not collected in a continuous sampling mode The graphic data is plotted based on the assumption that the first data point is the starting time and each subsequent data point is collected after one sampling period SECTION 6 COMPUTER INTERFACE FOR MINIRAE Users can select the Data function from Viewsub menu to see a text display of the data file Screen 6 6 Text Data in Text Window Serial Number 660600000 Operator ID Site Date 22 Month 3 Year Data type Peak value Sampling interval 66 second Alarm limits High limits 166 0 ppm Low limits 16 6 ppm Local Concentration Alarm a ow m O O AI OTA N ENESE a a al el The text data is displayed in a text window Screen 6 6 shows a typical text dat
16. calibration procedure Press menu key to exit zero gas calibration and move on to next menu item 5 Remove the zero gas calibration adapter from the Personal PID unit 6 One may press menu key before pressing enter key in step 4 to skip the zero gas calibration In this case the previously stored zero gas calibration data is not changed Note even if the reading shows a zero during step 4 it is recommended to press enter key at least once to ensure that the zero gas calibration is updated properly SECTION 4 PROGRAMMING IN HYGIENE MODE 4 7 2 Enter Standard Calibration Gas Value 1 Enter standard gas value option is the 6th menu option in Table 4 1 Display shows Clu xxx x where xxx x is the previously stored standard calibration gas value For example Clu 100 0 will be shown when the unit is first shipped from the factory because it is calibrated using 100 ppm isobutylene gas as standard calibration gas 2 If the concentration of the standard calibration gas to be used is the same as the displayed value press enter key 4 times to accept the displayed calibration value one digit at a time and move to step 4 3 If the concentration of the standard calibration gas to be used is different from the displayed value user needs to enter the new value Starting from the left most digit of the displayed value use up or down arrow key to change the digit value and enter key to confirm the digit the fla
17. case SECTION 1 GENERAL INFORMATION 1 1 General Specifications Table 1 1 Professional PID Unit Specification Size 7 1 Lx 2 7 W x 1 8 H 18 0 cm x 6 9 cmx 4 6 cm Weight 18 oz with battery 0 510 kg Detector Interchangeable 10 6eV or 11 7eV electrodeless ultraviolet discharge lamp with Teflon stainless steel chamber Operating Hours 10 hours continuous operation Battery Two rechargeable 6V 500 mAh sealed lead acid Field replaceable Gas Sampling Piston pump with gt 400 ml min intake flow rate Gas Inlet Probe 6 flexible 5 32 tube Gas Outlet 5 32 diameter barb fitting Attachment wrist strap Display 7 digit LCD with LED back light Analog Output Otol V Range 0 999 0 ppm with 0 1 ppm resolution 1000 1999 ppm with 1 ppm resolution continued continued SECTION 1 GENERAL INFORMATION 2 ppm or 10 of reading calibrated to 100 ppm Isobutylene lt 3 seconds to reach 90 of exposed concentration 2 operation keys 2 programming keys and an ON OFF key Separate alarm limit settings for TWA STEL and Peak in Hygiene Mode low and high alarm limits for Survey Mode Alarm 95 dB buzzer and flashing red LED to indicate exceeded preset limits low battery or lamp failure Calibration Two points field calibration for zero gas and standard gas Protection Password protected calibration settings alarm limits and data in Hygiene Mode 48 STEL readings 15 minutes interval in
18. cover Open the rubber cover and connect the AC adapter or the automotive DC charging adapter depending on the power source to the charging jack There is a bi colored LED inside the LED window which will provide an indication of the charging status Red battery is being charged Green charging is completed No Light bad connection or defective battery Plug in the AC or DC adapter which will turn on the red charge status LED first If the battery is fully charged it will turn to green quickly A completely discharged battery will be charged to its full capacity within 10 hours WARNING TO REDUCE THE RISK OF IGNITION OF HAZARDOUS ATMOSPHERES RECHARGE BATTERY ONLY IN AREA KNOWN TO BE NON HAZARDOUS REMOVE AND REPLACE BATTERY ONLY IN AREA KNOWN TO BE NON HAZARDOUS Note the factory supplied battery is designed to last 10 hours of normal operation for a new battery under the best conditions SECTION 3 OPERATION OF ACCESSORIES As the battery becomes older or operated under adverse conditions the battery capacity will be reduced significantly The battery of the MiniRAE Plus unit will be drained slowly even if the unit is turned off If the unit has not been charged for 4 5 days the battery voltage will be low The charging circuit is designed to prevent over charging Therefore it is a good practice to always leave the unit in the charger when it is not used so that it is fully charged and ready for immediate us
19. into the A drive Note do not use B drive for installation From the Program Manager of Window pull down the File sub menu Select Run from the sub menu A dialog box will appear as shown in Screen 6 1 Screen 6 1 Run Menu of Window Command Line a setup Cancel CI Run Minimized Browse Type in a setup in the command line box then depress enter key on the keyboard or click OK button on the menu The ProRAE 76 software package will be installed automatically under a newly created directory called ProRAE76 After the software is installed successfully a RAE logo icon will appear in the ProORAE 76 Application Program Group SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 2 Connecting MiniRAE Plus to PC The basic kit of MiniRAE Plus Professional PID unit is supplied with a PC interface adapter cable Connect the round 8 pin plug at one end of the cable to the multi interface jack at the rear side of the PID unit Connect the DB 25 connector at the other end of the cable to the parallel printer port of the PC Note do not connect to the serial port of the PC by mistake The parallel port is usually a 25 pin female D connector on the back of the PC the serial port is usually a 25 or 9 pin male D connector Caution Before connecting the cable to the MiniRAE Plus unit make sure that the power on both the PID unit and PC are turned off After the cable is connected turn on the power to the PC During the communi
20. linite High limits 2180 8 ppn Lov linite 30 6 ppa Local Tine Concentration Alera Status C pon igh lov a 88 59 23 7 L 1 3 0L 619 7 H L 2 01 70 6 L 3 3 01 35 9 L 4 6L 338 9 H L 5S LH J 31 8 L 6 8 03 63 9 L 7 1 04 30 4 L 8 03 0 38 2 L 4 18 69 1939 0 H L 10 10 09 37 4 L 11 19 89 1999 6 H L This text window shows the data just received from the MiniRAE Plus Use up and down arrow keys or page up and page down key to browse through the data file Users can not modify the data at this point Depress esc key to exit the text display window and return to the main menu Edit data file The data file is saved as a text file in ASCII format under the name that users have specified Users can invoke any text editor to review or modify the data file For example user can type edit survey txt to invoke the text editor come with DOS Users can also import the data file into a spread sheet or graph program for further data processing and data analysis Print data file Users can print the data file directly to a printer using print command from DOS prompt SECTION 6 COMPUTER INTERFACE FOR MINIRAE C PRORAE gt print survey txt enter Remember to disconnect the MiniRAE Plus unit from the printer port of the PC and connect a parallel printer to it before printing A simple A B switch box is recommended to allow users to switch between MiniRAE Plus unit and the printer conveniently 4 Quit
21. mixing ratio Routine maintenance for dilution probe 1 Replace membrane filter The membrane filter needs to be replaced every 3 4 weeks or when it is dirty The membrane filter is located inside the cavity on the front of the probe where the Teflon tube is connected to the body of the probe Use a pliers to unscrew the tube 3 12 SECTION 3 OPERATION OF ACCESSORIES adapter from the body Replace the membrane filter Make sure that the Teflon washer remains inside the cavity Replace the tube adapter 2 Replace charcoal filter The charcoal filter needs to be replaced every six months or sooner Use a screw driver to remove the two screws that hold the front piece with a set screw from the body of the probe Replace the charcoal filter Make sure that the O ring inside the front piece remain inside the hole Re attach the front piece to the body by two screws After replacing membrane filter or charcoal filter always re calibrate the probe 3 8 UV Attenuator Ring An UV attenuator ring has been included inside the sensor block of the MiniRAE Plus Professional PID unit This ring is made of Teflon material with 0 5 outside diameter and 0 2 hole diameter This ring is to be put in front the lamp window against the sensor block This ring reduces the UV light intensity to about 16 of the original intensity from the lamp The purpose of this ring to allow the unit to use a stronger UV lamp The stronger UV lamp will prov
22. not in use and conveniently extended into a 4 ft long pointer to reach difficult to reach sampling space e g above a ceiling or inside a large container etc The other end of the Teflon tubing can be inserted directly into the gas inlet tube of the PID unit Note when the remote probe is used there will be an additional delay of about 2 3 seconds of the instrument response because the sample gas has to travel through the 8 ft tubing before it reaches the sensor module inside the unit The traveling speed of air sample inside the tubing is 3 ft per second The sampling pump can pull in sample gas from as far as 200 ft horizontally or 100 ft vertically SECTION 3 OPERATION OF ACCESSORIES 3 4 Audio Interface Adapter and Earphone On the rear side of the MiniRAE Plus Professional PID Unit there is an 8 pin round multi interface jack which is normally covered by a protective rubber cover An audio interface adapter cable and a small earphone is available as an optional accessory for the MiniRAE Plus Professional PID Unit Open the rubber cover and connect the interface cable to the jack The audio buzzer signal is brought out through this interface cable Plug the earphone into the mini RCA jack on the end of the interface cable Users can now hear the same alarm signal through the earphone WARNING TO REDUCE THE RISK OF IGNITION OF HAZARDOUS ATMOSPHERES DO NOT CONNECT THE EARPHONE OR EXTERNAL ALARM DEVICES TO MINIRAE PLUS IN A
23. of the PC as described in section 6 2 Step 2 start serial number program Type ser followed by enter key to start the program C PRORAE gt ser enter Users should see following main menu FKK K K ee ee ee K K K K K K 2K K K K K K FK 2K K FK K K K K 2K K FK 2K K K K K K K K K Rae System PGM 76 PID Serial Number Setup Program Feb 1995 7 FKK K K K K K K K K 3K K K K K K K 3K K K K K K K FK K K K K K K FK 2K K K K K K K 2K K FK 2K K FK K 2K K K K K UNIT SERIAL NUMBER IS XXXXXX IS THIS SERIAL NUMBER CORRECT Y N Step 3 enter serial number Type Y to quit the program if the number matches the number printed on the back label of the unit Type N if the number is incorrect The display will ask for a correct serial number PLEASE ENTER 6 DIGITS SERIAL NUMBER XXXXXX After the new serial number is accepted and sent to the unit the display will show SECTION 6 COMPUTER INTERFACE FOR MINIRAE SET UNIT SERIAL NUMBER XXXXXX VERIFICATION SUCCESSFUL The program will terminate automatically SECTION 7 THEORY OF OPERATION 7 0 THEORY OF OPERATION MiniRAE Plus Professional PID unit uses a newly developed Electrodeless discharge UV lamp as the high energy photon source for the PID instrument A special high efficiency lamp driver is developed to turn on the UV lamp see Figure 7 1 LCD display sensor buzzer electrometer Figure 7 1 Block Diagram of MiniRAE Plus
24. the clipboard Users can then paste the graphic image to other Windows programs such as word processing programs presentation graphic programs etc etc Please refer to the application program manuals for details on how to paste images 3 Enter Serial Number If the serial number printed on the datalog report does not match the number on the label on the back of the unit refer to section 6 12 3 to enter a correct serial number SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 12 DOS Version of ProRAE 76 A DOS version of the ProRAE 76 software is included in this package It can be installed on any PC compatible computers using DOS 5 0 and later version of DOS with 640 K byte memory and 1 M byte of hard disk space This DOS version software is provided for users who prefer to use DOS operating environment in their PC The DOS version of ProRAE 76 offers similar functionality available in the Windows version in which users are allowed to configure the MiniRAE Plus instrument to be in either Hygiene or Survey Mode Users can also set the security level and password in Hygiene Mode and select datalog options in Survey Mode In addition they can retrieve data from the MiniRAE Plus and place the data in a text file for data analysis or record keeping The following sections will describe how to install the DOS version of the ProORAE 76 software and how to operate it Note it is not necessary to install the DOS version of ProRAE 76 o
25. the regulator matches the flow rate of the sampling pump Again the adjustable flow regulator calibration method allows a better matching of the flow rate between the regulator and the sampling pump of MiniRAE Plus Therefore it should provide a slightly more accurate calibration result The disadvantage of this method is that the adjustable flow regulator is more expensive C Tee Connection method In order to match the flow rate between the fixed regulator and the sampling pump it is possible to insert a Tee connector between the regulator and the MiniRAE Plus unit The Tee connector will allow the excessive gas from the regulator to flow out through the third opening on the Tee connector This method will also improve the calibration result SECTION 4 PROGRAMMING IN HYGIENE MODE 4 7 5 Calibration for Other Gases It is often impractical to carry a range of different standard gases into the field for calibration If the type of the organic vapor to be measured in the field is known and the relative sensitivity of this gas compared to the standard reference gas such as 100 ppm isobutylene for the PID instrument is available then one can calibrate the instrument using a standard reference gas and then convert the instrument readings into actual ppm of a specific gas based on the relative sensitivity also known as calibration factor The calibration factor for a specific gas is defined as sensitivity to a standard gas Ca
26. the unit to gain access to the battery compartment 3 There are two batteries inside the unit Unplug one battery from the battery jack on the top cover of the unit Plug a fully charged battery into the jack After the first battery is 8 3 SECTION 8 MAINTENANCE replaced replace the second battery Note there is a real time clock inside the unit If both batteries are disconnected from the unit at the same time the real time clock will be disabled Users have to re program the real time clock after the batteries are installed see section 4 9 and 4 10 on how to program real time clock 4 Ensure the battery plug is securely connected to the MiniRAE Plus Professional PID unit 5 Close the MiniRAE Plus Professional PID unit covers and tighten screws 6 There is an optional battery charger accessory for the MiniRAE Plus Professional PID Unit This charger will allow users to charge a spare battery outside the unit Plug the battery to the jack on the back of the charger to charge the spare battery SECTION 8 MAINTENANCE 8 2 Filter Replacement During the course of normal operation dust and residual gas vapor may build up on the membrane filter The build up rate depends on the working environment and the concentration of the the vapors being sampled As a guide it is recommended to replace the membrane filter once a week or when the filter is dirty upon visual inspection 1 Turn off power of the MiniRAE Plus Professi
27. 5 PROGRAMMING IN SURVEY MODE 5 4 Select Site Number The first menu option item 1 in Table 5 1 is to allow users to select a new site number Display shows the following message SIE xx where xx is the current site number Press up key once to increase the site number by one Press down key once to decrease the site number by one By holding down the up or down key the site number will automatically advance to next number at approximately once every half second This allows users to advance to a new site number rapidly without repetitively pressing the keys When the site number reaches the maximum value of 49 it will automatically wrap around to zero When a desired new site number is reached press enter key will accept the new site number and move to next menu option If menu key is pressed in step 3 the previous site number will not be changed and the display will show next menu option SECTION 5 PROGRAMMING IN SURVEY MODE 5 5 Select Calibration Data In Survey Mode users are allowed to select anyone of the two previously stored gas calibration data to be used for current gas measurement These two gas calibration data are identified by a single digit gas number 1 or 2 1 Select Calibration Data is the 2nd menu option in Table 5 1 Display shows GAS x where x is 1 or 2 This indicates that the current calibration data selection is gas 1 or gas 2 For example gas 1 may be
28. CD display indicates the lamp or sensor failure condition A flashing message of bAt xxx x indicates the low battery voltage condition In addition there will be a single beep per minute to remind users that battery voltage is low SECTION 2 OPERATION OF MINIRAE PLUS 2 7 Preset Alarm Limits and Calibration The MiniRAE Plus Professional PID Unit is factory calibrated with standard isobutylene gas and is programmed with default alarm limits as listed below Refer to section 4 and 5 for programming procedures if new calibration or new alarm limits are required Table 2 2 Factory Calibration and Preset Alarm Limits Calibration Standard Gas 100 ppm isobutylene Hygiene Mode TWA Alarm Limit 10 ppm STEL Alarm Limit 25 ppm Peak Alarm Limit 50 ppm Survey Mode Low Alarm Limit 10 ppm High Alarm Limit 100 ppm Battery Low Level 5 5 volt Power Off Level 5 3 volt SECTION 2 OPERATION OF MINIRAE PLUS 2 8 Datalogging The MiniRAE Plus Professional PID Unit is capable of recording crucial data during normal operation The recorded data can be down loaded to Personal Computer later on for record keeping or report generation The data recorded in two operating modes are different Hygiene Mode In Hygiene Mode MiniRAE Plus Professional PID Unit calculates and stores the values of TWA STEL Peak concentration and 12 hours of STEL readings taken at 15 minutes interval a total of 51 readings In addition the time stamp
29. CE FOR MINIRAE PLUS sccccccesssssccesssneccsssseneece 6 1 6 1 Installation of ProRAE 76 000000000 6 3 6 2 Connecting MiniRAE Plus to PC 6 4 6 3 Starting PrORAE 76 ceeeeceeseeeteeees 6 5 6 4 Receive Data from MiniRAE Plus 6 7 G39 View Dataset elne cote e aes 6 8 6 6 Save Data File A TEN 6 13 6 7 Print Data File 25 wscsssntenset tidietecsactaraciacacaas 6 14 6 8 Configure MiniRAE Plus from PC 6 15 6 9 Send Configuration to MiniRAE Plus 6 20 6 10 Save Configuration File 0 00 ee eeeeeeeeeee 6 21 6 11 Other Functions of ProRAE 76 004 6 22 6 12 DOS Version of ProRAE 76 00006 6 23 6 12 1 Installation of ProRAE 76 f DOS 20s sa sei thietscncreeictiataacleay 6 24 6 12 2 Operation of ProRAE 76 fOr DOS Pena OnE H ERR RAR SS STE one RO 6 25 6 12 3 Enter Serial Number 0 6 34 ii MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL 7 0 THEORY OF OPERATION 7 1 8 0 MAINTENANCE ceeeeeeereeeens 8 1 8 1 Battery Charging and Replacement 8 2 8 2 Filter Replacement 42 nce cie tinted 8 5 8 3 Sensor Module Cleaning 0 cesses 8 6 8 4 Probe Assembly Cleaning e eee 8 10 8 5 Lamp Cleaning and Replacement 8 11 8 6 Pump Replacement ceeeeeeeeeeeeteees 8 13 9 0 TROUBLESHOOTING 000 0 eee eeeeee 9 1 APPENDIX A FLOW CHART OF HYGIENE MODE
30. DUCE THE RISK OF IGNITION OF HAZARDOUS ATMOSPHERES DO NOT CONNECT THE ANALOG INTERFACE CABLE TO MINIRAE PLUS IN AREA KNOWN TO BE HAZARDOUS Analog output signal Pin 1 of the multi interface jack carries the un calibrated analog signal directly from the PID sensor The output impedance of the signal is 3 5 k Ohm The range of the voltage output is from 0 to 1 Volt Note the analog signal output has a built in offset of about 160 170 mV When a 100 ppm Isobutylene gas is applied to the instrument the output signal will increase by about 20 30 mV SECTION 3 OPERATION OF ACCESSORIES Note in order to prevent overloading of the analog output signal when connecting to external device only high impedance inputs should be used Multi interface pin assignment The multi interface jack at the bottom of the unit is a circular DIN receptacle with 8 holes The signal assignment on this connector is shown in Figure 3 2 d analog output 2 reset fomPC 3 data input fromPC 4 R t S data output to PC fo clock to PC alarm output J e Rear View Figure 3 2 Pin diagram of the multi interface connector 3 6 Water Trap Disk SECTION 3 OPERATION OF ACCESSORIES A water trap disk device is offered as an accessory to the MiniRAE Plus Professional PID unit This device is constructed with a polypropylene housing and PTFE membrane filter This device is to be inserted into the front end of the gas inlet probe during o
31. E The MiniRAE Plus Professional PID Unit is built with a microcomputer to provide programming flexibility In Hygiene Mode operation authorized users can re calibrate the unit change the gas concentration alarm limits and set the date and time of the internal real time clock The programming is menu driven to provide intuitive end use operation The display shows the menu option and the keypad is used for the selection or data entry to each menu option Note in Hygiene Mode a 3 level security protection strategy is offered for programming flexibility security level protection 0 change not allowed 1 change allowed need password 2 change allowed no password The security level and password can be set up in the instrument configuration software ProRAE 76 that runs under PC Window 3 1 or DOS The security level and password are then downloaded into the instrument see section 4 11 and 4 12 for details SECTION 4 PROGRAMMING IN HYGIENE MODE 4 1 Menu Options The Hygiene Mode programming provides ten menu options as shown in Table 4 1 below The first menu option allow entry into the programming menu by keying a four digit password Note this menu option will be displayed for level 1 security only Once inside the programming menu menu option 2 to 10 can be selected by toggling the menu key through the list of menu options until the desired option is displayed Note At the end of last menu option the unit will aut
32. MiniRAE Plus PROFESSIONAL PID OPERATION AND MAINTENANCE MANUAL Document No 002 4001 Rev E CE RAE SYSTEMS INC 680 West Maude Avenue Suite 1 Sunnyvale CA 94086 July 1998 Y TEM RAE Systems Inc 680 West Maude Ave 1 Tel 408 481 4999 Sunnyvale CA 94086 Fax 408 481 4998 Limited Product Warranty RAE Systems RAE warrants the RAE products to the original owner purchased directly from RAE or an authorized RAE Reseller to be free of defects and workmanship for a period of one year from the date of original shipment to owner exclusive of consumable including batteries filters and calibration gases Pumps and 10 6 eV electrodeless discharge lamps are warranted for six months and 11 7 eV lamps for one month RAES obligation under this warranty is limited to replacing or repairing at RAE s option any defective part if returned to a RAE authorized factory repair center with shipping charges prepaid by the buyer and which upon inspection by RAE shall prove to have been defective in normal use and service To validate this warranty the original Warranty amp Registration Card supplied with the product must be completed and returned to RAE within 30 days of purchase To maintain warranty Purchaser must perform maintenance and calibration as prescribed in the Operation and Maintenance manual In the event of defect Purchaser will notify RAE designated factory repair center in advance and if troub
33. MiniRAE Plus interface cable from the parallel port and connect the printer to it before a hard copy can be made A convenient way to do so is to use a A B switch box which allows users to switch between the MiniRAE Plus and a parallel printer quickly SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 8 Configure MiniRAE Plus from PC The ProRAE 76 software allow users to configure the MiniRAE Plus Professional PID Unit for Hygiene or Survey Mode operation set alarm levels select security level and password for Hygiene Mode and select datalog options for Survey Mode from PC and send the configuration information to the unit when it is ready From the main menu of ProRAE 76 software select the Open function from the File sub menu or click the Open File icon an open folder A dialog box will appear as shown in Screen 6 8 Screen 6 8 File Opening Dialog Box File Name Directories hygiene cfg survey cfg List Files of Type Config Files cfg SECTION 6 COMPUTER INTERFACE FOR MINIRAE There should be two or more configuration files in the file list Each configuration file has a file extension of CFG There are two generic configuration files supplied with ProRAE 76 software HYGIENE CFG and SURVEY CFG Choose either the SURVEY CFG or HYGIENE CFG by highlighting the file name and depress Enter key or click OK button The title bar of the main menu will show ProRAE 76 c prorae76 hygiene cfg or ProRAE 76 c p
34. OS prompt C PRORAE gt hygiene enter or C PRORAE gt survey enter A generic default configuration will be sent to the unit respectively In this case users need to re calibrate and re enter the password serial number and real time clock information 3 Receive Data from MiniRAE Plus SECTION 6 COMPUTER INTERFACE FOR MINIRAE To receive data from MiniRAE Plus type 3 and followed by enter key The display will show Receiving Data From MiniRAE Plus EEPROM UTILITY for Xicor 24 L Cxx Calling format Burn sdt_xic LPT B filespec messagefilespec Read sdt_xic LPT R filespec messagefilespec Verify sdt_xic LPT V filespec messagefilespec Clear sdt_xic LPT C messagefilespec If messagefilespec not specified then output to SCREEN Legal values for LPT are 1 2 3 4 please wait It will take approximately 20 seconds to complete the data transfer from MiniRAE Plus to PC After the data is recerved successfully a message will be displayed gt task completed successfully Your need to specify a file to store the data e g survey txt Please enter an output file name Type any file name with up to 8 characters as file name and TXT as file extension For example survey TXT is a valid file name Following text window will be displayed SECTION 6 COMPUTER INTERFACE FOR MINIRAE Bata fron MiniRAE ees Jats 19 Mowth 12 Senpling interval 1 second Alara
35. REA KNOWN TO BE HAZARDOUS SECTION 3 OPERATION OF ACCESSORIES Audio alarm signal The audio alarm signal consists of a series of 2 kHz pulses appearing at pin 7 of the multi interface jack The duty cycle of the signal is 50 Figure 3 1 shows the specification and waveform of the alarm signal voltage 6 V peak to peak current 14mA max frequency 2 kHz duty cycle 50 square wave duration 50 milli seconds pin out Pin 7 signal Pin 8 ground 50 mili seconds Figure 3 1 Alarm signal waveform Note the audio interface can be connected an external alarm box which can amplify the alarm signal or produce a strong flash light signal if needed If users need to use their own earphones make sure that the earphones have at least 200 ohm impedance SECTION 3 OPERATION OF ACCESSORIES 3 5 Analog Interface Adapter An analog interface adapter cable is available as an optional accessory for the MiniRAE Plus Professional PID Unit Open the rubber cover and connect the interface cable to the multi interface jack The analog signal output from the sensor module 0 1V is brought out through this interface cable Connect the mini RCA plug on the other end of the interface cable to any external recording equipment such as a strip chart recorder or an analog datalogger Users can readily interface the MiniRAE Plus Professional Unit to external equipment for extended datalogging or other field applications WARNING TO RE
36. T IS SUITABLE FOR USE IN CLASS I DIVISION 2 GROUPS A B C D OR NON HAZARDOUS LOCATIONS ONLY THE MODEL PGM 76IS EQUIPMENT IS CLASSIFIED AS TO INTRINSIC SAFETY FOR USE IN CLASS I DIVISION 1 GROUPS A B C D OR NON HAZARDOUS LOCATIONS ONLY WARNING EXPLOSION HAZARD SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I DIV 2 AND CLASS I DIV 1 AVERTISSEMENT RISQUE D EXPLOSION LA SUBSTITUTION DE COMPOSANTS PEUT RENDRE CE MATERIEL INACCEPTABLE POUR LES EMPLACEMENTS DE CLASSE I DIVISION 2 CLASSE I DIVISION 1 MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL Special Note Ji When the MiniRAE Plus PGM 76 Professional PID is taken out from the transport case and turned on for the first time there may be some residual organic vapor trapped inside the ionization chamber The reading may therefore show a few ppm Connect the zero gas adapter supplied with the unit will clear the residual vapor and reduce the reading to zero quickly He ie The battery of the MiniRAE Plus unit drains slowly even when turned off If the unit has not been charged for 4 5 days the battery voltage will be low Therefore it is a good practice to leave the unit in the charger so that it is fully charged and ready for immediate use It is also recommended to fully charge the unit FOR AT LEAST 24 HOURS before using it If the unit is going to be put on the shelf for more than 4 5 days it is highly recommended to turn off the battery switch a
37. These methods are described briefly here A Sampling Bag Calibration method First fill a Tedlar sampling bag with the reference gas from a standard gas bottle The size of the Tedlar bag should be at least 1 liter or more Make sure that the bag is only partially inflated so that there will not be excessive pressure build up inside the bag Then connect the air intake probe of the MiniRAE Plus to the Tedlar bag and perform the gas calibration procedures as described in Section 4 7 3 In general the sampling bag calibration method will allow the air flow from the bag matches the flow rate of the sampling pump of each individual PID unit Therefore it should provide a slightly more accurate calibration result The disadvantage of the sampling bag calibration method is that it uses more gas for each calibration B Adjustable Flow Regulator method There is a new adjustable flow regulator in the market today This new regulator allows user to control the flow of the gas output from the standard gas bottle to match the flow rate of the sampling pump of each individual PID unit A small flow indicator a small steel ball inside a clear acrylic tube is included as part of the regulator Normally the ball sit on the bottom of the tube User can turn the knob of the regulator SECTION 4 PROGRAMMING IN HYGIENE MODE slowly to increase the gas flow from the bottle until the ball start to float up in the tube At this point the flow rate of
38. Unit 5 One may press menu key any time before pressing enter key in step 2 to abort the calibration In this case the previously stored calibration data is not changed Note 1 If enter key is pressed inadvertently during step 2 before the standard reference gas starts to flow an error message of CAL Err will be displayed Simply turn on the gas flow wait for it to stabilize and press the enter key This should allow the instrument to be calibrated In case user does not have a calibration gas then press menu key to exit step 2 A factory preset value will be used to calculate the standard gas calibration Note 2 The other possible cause for the CAL Err message to be displayed is that the instrument does not have enough sensitivity for the given calibration gas There are several reasons for low sensitivity First the instrument and lamp is not sensitive to the specific calibration gas In this case user needs to use a higher concentration of the given calibration gas as the calibration standard use a different calibration gas or use a 4 18 SECTION 4 PROGRAMMING IN HYGIENE MODE higher energy lamp The second reason is that the UV light intensity of the lamp is weak In this case replace the UV lamp with a newer and stronger one SECTION 4 PROGRAMMING IN HYGIENE MODE 4 7 4 Alternative Calibration Methods There are two alternative calibration methods of the reference gas which often are used by some users
39. View sub menu If the communication is not successful an error message will appear Check the cable to make sure that the connectors on both end of the cable are securely seated in the sockets Try to receive data again If the error message still appear after repeated attempts call authorized service center for help SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 5 View Data After the datalog results are transferred from MiniRAE Plus Professional PID Unit into PC users can view the data in graphic or text format From the main menu select Plot function from View sub menu for a graphic display of the data Screen 6 3 shows a typical graphic display The alarm limit is shown as a horizontal line Screen 6 3 Graphic Displa ProRae 76 Survey data just Received From Mini RAEBa eg File Communication Options View Te PAP A A S TT L Hlal RT T LLALL i CAs oom K A Ged KAZ 5G 6 Tiree Hears When viewing the graphic display of the data it may be necessary to adjust the horizontal scale time in hours or vertical scale gas concentration in ppm to get a better display Choose the Set View Range function from the Options sub menu to modify the viewing range as shown in Screen 6 4 SECTION 6 COMPUTER INTERFACE FOR MINIRAE Screen 6 4 Set View Range Dialog Box Set View Range Xx axis time Hour Minute Start e 32 emt 7 Y axis gas concentration 100 00 PPM Note if users enter
40. a displayed in a text window The text data for Hygiene Mode includes the start stop and elapse time of the PID unit It also includes the alarm limits and actual values of TWA STEL and Peak measurements The Peak time is the time when the Peak actually occurs The STEL values at every 15 minutes interval are displayed in chronological order The alarm status column will display a letter P S or T if Peak STEL or TWA limit is exceeded The text data for Survey Mode includes high low alarm limits sampling interval data type and gas concentration of 50 sites 6 11 SECTION 6 COMPUTER INTERFACE FOR MINIRAE The alarm status column will display a letter H or L if High or Low alarm limit is exceeded Note the text data can be saved as text file ASCII characters by high light the area of the text window and click the Copy to Clipboard button Then user can open another word processing program such as Word Word Perfect Notepad etc to paste in the text from the clipboard and save it as a text file Users can also print the text data using the Print button SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 6 Save Data File After viewing the data results it may be desirable to save the data file for future use Users have to select Save As function from the File sub menu or click the Save As icon a disk from the tool bar A dialog box will appear which is similar to Screen 6 7 File Name Directories
41. a type continuous sampling Peak value manual sampling Average value Rac Save calibration amp clock data Note the Operator ID Site Name and Year information is only used for reference purpose It is not sent to the MiniRAE Plus instrument SECTION 6 COMPUTER INTERFACE FOR MINIRAE Saving calibration and clock data In both Hygiene and Survey Mode configuration dialog box there is a check box at the bottom of the dialog box save calibration and clock data If this box is checked then the calibration data password and real time clock information will be preserved in the unit so that users do not need to re calibrate or re enter password and real time clock information after a new configuration information is sent to the unit If this box is not checked then all the configuration information except the serial number will be over written by the new configuration setup In this case users need to re calibrate and re enter the password and real time clock information SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 9 Send Configuration to MiniRAE Plus Tn order to send the configuration information to the MiniRAE Plus Professional PID Unit select the Send function from the Communication sub menu or click the Send icon right arrow with Send letters from the tool bar A message will appear Sending data please wait for about 40 Sec After the information is sent successfully a dialog box will app
42. adings In addition the time stamps which indicate when the unit was last turned on and off when the peak occurred and when the TWA alarm occurred if any will also be recorded These stored data can be cleared by selecting the clear data menu option 1 Clear data option is the 8th menu option in Table 4 1 Display shows a flashing Clr ALL message 2 Ifusers want to clear data press enter key to confirm the menu selection All 51 datalog values and time stamp numbers will be erased 3 Press menu key will move to the next menu option without clearing the data SECTION 4 PROGRAMMING IN HYGIENE MODE 4 9 Set Hour and Minute In Hygiene Mode users are allowed to change the hour and minute of the built in real time clock A 24 hour format is used for the hour value L Set hour and minute option is the 9th menu option in Table 4 1 Display shows Hr hh mm with the left most digit flashing where hh is the current hour and mm is current minute Tomodify this time starting from the left most digit use up or down arrow key to change the digit value and enter key to confirm the digit the flashing digit will then move on to next digit to its nght Repeat this process until all 4 digits of the new time are entered To preserve the current hour and minute press menu key at step 1 or in the middle of step 2 the unit will abort the hour and minute entry and move to the next menu option
43. an sensor module Clean probe assembly Replace membrane filter Use water trap disk Reasons Lamp dirty or weak Solutions Clean or replace lamp see section 8 4 Er XXX x Dirty sensor message during Weak or defective lamp operation Solutions Clean sensor Replace lamp filter Read a small Reasons There is actually a background background gas level value Instrument zero drift Solutions Do zero gas calibration see section 4 7 1 SECTION 9 TROUBLESHOOTING Possible Reasons amp Solutions Reading jump Reasons Incorrect gas calibration Low sensitivity to cal gas Solutions Re calibrate Use different cal gas Slow response Reasons Leakage in probe assembly to gas input or sensor module Solutions Tighten the probe assembly and sensor module No air draw at Reasons Defective pump or leakage gas inlet tube in probe assembly and sensor module Solutions Replace pump tighten the probe assembly and sensor module Lo bAt Reasons Discharged battery message at power on Solutions Recharge battery SECTION 9 TROUBLESHOOTING Possible Reasons amp Solutions Can not tum off Reasons Microprocessor hang up unit or corrupted Solutions Turn off then turn on characters in battery switch LCD display Reload software from PC Reasons Dirty or wet sensor Solutions Clean and dry sensor Use water trap disk to block out moisture Reasons Dirty lamp sensor module Weak lamp Solutions
44. calibrated using isobutylene gas while gas 2 may be calibrated using benzene gas or using calibration factor 2 To change the calibration data selection use up or down key to change the digit value from 1 to 2 or vice versa Note when the unit is first shipped from the factory gas 1 is calibrated using 100 ppm isobutylene gas 2 is un calibrated 3 Depress enter or menu Key after the selection is completed and move to the next menu option SECTION5 PROGRAMMING IN SURVEY MODE 5 6 Calibration of MiniRAE Plus In Survey Mode user is allowed to select one of two previously stored calibration data It is therefore also necessary to calibrate and store two sets of calibration data The calibration procedure for either one of the two gases is identical to that of the Hygiene Mode Please refer to section 4 7 for the detailed steps of calibration Note before starting any calibration procedure make sure that the correct gas number is selected first in the previous menu see section 5 5 After the calibration procedure is completed the calibration data will be automatically stored into the currently selected gas number SECTION 5 PROGRAMMING IN SURVEY MODE 5 7 Set Sampling Period Users are allowed to select a sampling period for the datalog operation This period can be between 1 second to 9999 seconds l Set Sampling Period option is the 6th menu option in Table 5 1 Display shows SP xxxx with the lef
45. cation session between PC and the PID unit PC will directly read and write to the memory of the PID unit Therefore it is important to turn off the power to the PID unit so that the memory content will not be disturbed during data transfer Note the real time clock in the MiniRAE Plus unit will be turned off while it is connected to the PC Therefore it is recommended to check and update the real time clock after connecting MiniRAE Plus to the PC to ensure the correct time and date information in the unit SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 3 Starting ProRAE 76 After the ProRAE 76 software is successfully installed there will be an application icon that shows a RAE logo inside the ProRAE 76 Application Program Group of the Program Manager To start the ProORAE 76 program double click the RAE logo icon The main menu of ProRAE 76 software will appear in a new window as shown in Screen 6 2 Screen 6 2 Main Menu of ProRAE 76 ProRae 76 File Communication Options View The software functions of ProRAE 76 are organized into four sub menus inside the menu bar File manipulate the data or configuration files Communication communicate with the MiniRAE Plus Options configure instrument or viewing options View display text or graphic data 6 5 SECTION 6 COMPUTER INTERFACE FOR MINIRAE To invoke a function within a sub menu position the mouse cursor at the title of each sub menu and click the left button of the
46. demo dat c prorae76 Save File as Type Config Files cfg Type in a desired file name in the file name box Choose any 8 character as file name Always use DAT as file name extension Click OK button or depress Enter key to save the file Once the data file is saved on disk users can open it at a later time for further analysis or report generation Note the data file saved in this manner with DAT extension is a secure format which users can not modify or temper with easily 6 7 Print Data File 6 13 SECTION 6 COMPUTER INTERFACE FOR MINIRAE After viewing the data results it is possible to print the data to a printer in order to obtain a hard copy of the text or graphic data report To print the graphic data choose the Plot function form the Viewsub menu first The graphic data will be displayed Users need to select Print function from the File sub menu or click the Print icon a printer from the tool bar to print the graphic data To print the text data choose the Data function form the Viewsub menu first The text data will be displayed in a browse window Then click Print button to print the text data A printer setup dialog box will appear before the printing starts so that the paper size orientation printer type etc can be configured correctly Note the MiniRAE Plus to PC interface uses parallel port on the PC If the printer also uses the parallel port on the PC it is necessary to disconnect the
47. e There is an optional single station battery charger accessory for the MiniRAE Plus Professional PID Unit This charger will allow users to charge a spare battery outside the unit Plug the battery to the jack on the back of the charger to charge the spare battery There is also an optional automotive charging adapter cable which allows user to charge the MiniRAE Plus unit directly from the 12 V cigarette lighter socket inside a car SECTION 3 OPERATION OF ACCESSORIES 3 2 Sample Gas Collection On the right side of the MiniRAE Plus Professional PID Unit there is a gas outlet port where the gas sample can be collected after going through the sensor module and pump unit A gas outlet port adapter with 2 ft Tygon tubing is supplied with the basic kit Insert the threaded end of the adapter into the gas outlet port and turn clock wise to tighten the adapter The open end of the Tygon tubing can be connected to a sample gas collection bag A complete gas collection kit which includes a gas outlet adapter 2 ft Tygon tubing and a three liter Tedlar sample collection bag is also available as an accessory SECTION 3 OPERATION OF ACCESSORIES 3 3 Remote Access Probe A remote access probe is available as an optional accessory for the MiniRAE Plus Professional PID Unit This probe is constructed with an aluminum telescoping pointer and 6 5 ft Teflon tubing The telescoping pointer allows the probe unit to be stored in a compact space when
48. e the membrane filter and small O ring which are held together inside the round hole on the front cover Note the sensor block is hold together by another 4 hex nuts at the back of the sensor block Itis not recommended to remove these 4 inner hex nuts and completely disassemble the sensor block for cleaning Simply loosen these 4 inner hex nuts for cleaning This way all the individual pieces of the sensor block can be cleaned easily without the hassle of disassembling and assembling the entire sensor block Clean the sensor block using GC grade methanol followed by water to rinse the sensor block thoroughly Itis highly recommended that a ultrasound bath to be used to clean the sensor block for at least 3 minutes Make sure the sensor block is fully dried before it is reassembled A damp sensor block will cause excessive 8 7 SECTION 8 MAINTENANCE leakage and sensor failure It is recommended to blow dry the sensor block or bake it at 75 C for 5 to 10 minutes to ensure it is fully dried 6 Replace the membrane filter and small O ring into the front hole of the sensor block 7 Refer to Figure 8 2 insert the lamp into the large O ring first Then push the lamp and O ring into the lamp house attach the cleaned sensor block to the lamp house by 4 hex nuts Make sure that the 4 inner hex nuts are tight before putting on the 4 outer hex nuts Note tighten these nuts by hand using a nut driver while using a screw driver on the f
49. ear to indicate that the Send Process is completed Click the OK button or depress the Enter key and the screen will return to main menu If the communication is not successful an error message will appear Check the cable to make sure that the connectors on both end of the cable are securely seated in the sockets Try to send information again If the error message still appear after repeated attempts call authorized service center for help SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 10 Save Configuration File In order to save the configuration information for future use users can select Save As function from the File sub menu or click the Save As icon a disk from the tool bar A dialog box will appear similar to Screen 6 7 Type in a desired file name in the file name box Users can choose any 8 character as file name with CFG as file name extension Avoid using HYGIENE CFG or SURVEY CFG as file name because these two files are reserved for the generic configuration files Once the configuration file is save on disk users can open it at a later time for further modification or send it to MmiRAE Plus SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 11 Other Functions of ProRAE 76 1 Exit ProRAE 76 Program To exit the ProRAE 76 program choose Exit function from the File sub menu 2 Copy to Clipboard Choose Copy to Clipboard function from the Options sub menu This will allow the graphic image to be copied onto
50. ed The datalogging can be initiated manually event driven or the unit can perform continuous sampling automatic Up to 50 SECTION 2 OPERATION OF MINIRAE PLUS sets of sample readings with 24 hour time stamps can be recorded in this mode Selection of Operation Mode Users can configure the instrument to be in either one of the two operating modes using a software package ProRAE 76 which is supplied with the Basic Kit of MiniRAE Plus This software runs on any Personal Computer PC under Window 3 1 or DOS environment Please refer to section 6 on how to install this software package how to interface MiniRAE Plus instrument to PC and how to configure the instrument for either Hygiene or Survey Mode After the configuration is downloaded to the instrument as described in section 6 the instrument will be setup to operate in the appropriate mode Indication of Current Operation Mode When the MiniRAE Plus Professional Unit is first turned on a software version message will appear in the LCD display If the unit is configured for Hygiene Mode the message will be HG x xx If itis configured for Survey Mode the message will be Su x xx where x xx is the version number of each operating software SECTION 2 OPERATION OF MINIRAE PLUS 2 3 Keys and Display Figure 2 2 shows the LCD display and the keypad on the front panel of the unit The function of the 5 keys during normal operation are summarized bellow
51. ery from the unit Gas outlet port for connection to sample collection bag Multi interface jack for connection to PC audio interface or analog output SECTION 2 OPERATION OF MINIRAE PLUS The operation details are explained in the following sections Figure 2 1 Major parts of the MiniRAE Plus SECTION 2 OPERATION OF MINIRAE PLUS 2 2 Two Modes of Operation The MiniRAE Plus PGM 76 Profession PID unit offers two different operating modes 1 Industrial Hygiene Mode simplified as Hygiene Mode In this mode of operation the unit measures the air sample once each second and compares it with a preset peak alarm limit These same measurements are also averaged over one minute intervals with the resulting value used to compute Time Weighted Average TWA and Short Term Exposure Level STEL values which are themselves compared to preset alarm In addition the STEL values are captured and recorded every 15 minutes for up to 12 hours A time stamp indicates when the unit was last turned on and off 2 Site Survey Leak Detection Mode simplified as Survey Mode In this mode of operation the unit measures air sample once each second and compares it with a preset low alarm limit A variable frequency alarm signal is generated in proportion to the magnitude of the measurement When datalog is enabled the average value or the peak value over a sampling period which can be programmed from 1 second to 9999 seconds 166 hours is stor
52. fessional PID Unit 2 Remove the probe assembly Use a small tweezers to remove the steel wool inside the cavity Insert a new one into the cavity Make sure that it stays snugly fit inside the cavity 3 Replace the probe assembly 4 Tum on the MiniRAE Plus Unit Wait for the pump to come on Check to see if air is drawn into the gas inlet probe If the probe is air tight when the gas inlet is blocked by a finger the pump noise should change and a strong suction force will be felt SECTION 8 MAINTENANCE 8 5 Lamp Cleaning and Replacement If the lamp does not turn on or there is excessive film build up on the lamp window the unit will display a message of Err Xxx X to indicate that a cleaning or replacement of the lamp may be required Periodic cleaning of the lamp window will also remove film deposits and restore lamp sensitivity Care must be exercised when cleaning the window so that window surface is not damaged 1 Turn off power of MiniRAE Plus Professional PID Unit 2 Refer to Figure 8 1 unscrew the probe assembly remove four screws and open the PID covers Remove the sensor module from the PCB Disassemble the sensor block from the lamp house as described in section 8 2 3 Gently pull out the lamp avoiding contact with the flat window surface 4 Clean or replace a new lamp avoiding contact with the flat window surface 5 Assemble the sensor block and the lamp house Put back the sensor module C
53. fferences between ProRAE 75 and ProRAE 76 SECTION 6 COMPUTER INTERFACE FOR MINIRAE Due to hardware differences between MiniRAE model PGM 75 and MiniRAE Plus model PGM 76IS and PGM 76 the ProRAE 76 software package is not compatible with the existing ProRAE 75 software package The ProRAE 76 will only work with MiniRAE Plus product line while the ProRAE 75 will only work with MiniRAE product line All the major features are identical between these two versions of software packages The only differences in ProRAE 76 are summarized bellow 1 A text browse window is used to display text data instead of using the Notepad program from Windows This will eliminate some confusion 2 The data file will always be saved in binary format with cfg file extension User does not need to deal with two type of data files binary and text file as in ProRAE 75 software 3 The Survey mode data can also be displayed in graphic format as with the Hygiene mode data However the graphic data is only meaningful when the data is collected in continuous sampling mode See Section 5 13 for details of datalog mode SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 1 Installation of ProRAE 76 ProRAE 76 software package is supplied with the MiniRAE Plus Professional PID Basic Kit This software package is available in 3 5 diskette call factory for a 5 25 diskette if necessary To install the ProRAE 76 for Window version insert the diskette
54. following four operations 1 Configure for Survey Mode To configure the MiniRAE Plus 76 to be in Survey Mode type Ja 1b Ic or 1d based on the choice of the datalog option and followed by enter key Type la manual sampling datalog peak lb manual sampling datalog average lc continuous sampling datalog peak ld continuous sampling datalog average See sections 5 13 5 14 for a detailed description of these two datalog options in Survey Mode Note the factory default setup is for manual sampling datalog peak value la Users will see the following display Reading Information from PID Unit 6 26 SECTION 6 COMPUTER INTERFACE FOR MINIRAE EEPROM UTILITY for Xicor 24 L Cxx Calling format Burn sdt_xic LPT B filespec messagefilespec Read sdt_xic LPT R filespec messagefilespec Verify sdt_xic LPT V filespec messagefilespec Clear sdt_xic LPT C messagefilespec If messagefilespec not specified then output to SCREEN Legal values for LPT are 1 2 3 4 please wait After about 20 seconds if the transfer is successful the display will change to Sending Manual Survey Mode Configuration Event Datalogging EEPROM UTILITY for Xicor 24 L Cxx Calling format Burn sdt_xic LPT B filespec messagefilespec Read sdt_xic LPT R filespec messagefilespec Verify sdt_xic LPT V filespec messagefilespec Clear sdt_xic LPT C messagefilespec If messa
55. g where xxx x is the previously stored Peak alarm limit 2 To modify this limit starting from the left most digit use up or down arrow key to change the digit value and enter key to confirm the digit the flashing digit will move on to next digit to its right Repeat this process until all 4 digits of the new Peak alarm limit are entered 3 To preserve the previously stored Peak alarm limit press menu key at step or in the middle of step 2 the unit will abort the Peak alarm limit entry and move to the next menu option 4 Note if the security level of the unit is set to no change allowed level 0 step 2 will not have any effect on the previously stored alarm limits Users can only view the limit but can not alter the limit SECTION 4 PROGRAMMING IN HYGIENE MODE 4 7 Calibration of MiniRAE Plus In the Hygiene Mode the user may re calibrate the MiniRAE Plus Professional PID Unit This is a two point calibration process using zero gas and standard reference gas First a zero gas which contains no detectable organic vapors is used to set the zero point CO Then a standard reference gas which contains a known concentration of a specific gas is used to set the second point of reference C1 The calibration procedures are detailed below Note if the security level of the unit is set to no change allowed level 0 both zero gas and standard gas calibration menu will not be displayed SECTION 4 PROGRAMMING
56. gas reading during the previous sampling period 5 The battery voltage reading is the current battery voltage in volt The reading is updated once a minute and is shown as pAt xxx x in the LCD window Choose a reading The five readings are arranged in a round robin order instantaneous gt STEL gt TWA gt Peak gt battery voltage gt instantaneous To choose a specific reading press the down key one or more times in normal operation mode until the desired reading shows For example to display STEL reading press down once To display TWA reading press down key twice and so on the STEL value is not displayed in Survey Mode SECTION 2 OPERATION OF MINIRAE PLUS 2 6 Alarm Signal The built in microcomputer constantly updates and monitors real time gas concentration and compares it with the programmed alarm limits TWA STEL and peak limits for Hygiene Mode low and high limits for Survey Mode Whenever the concentration exceeds any of the preset limits the alarm buzzer and red flashing LED will be activated immediately to war user of the alarm condition Note a fully charged battery should show 6 3 volt or higher Whenever the battery voltage falls bellow 5 5 volt or the UV lamp or sensor module fails the unit will also activate the buzzer and red LED alarm signal When the low battery alarm occurs there will be about 20 30 minutes operating time left from the battery When the battery voltage fal
57. gefilespec not specified then output to SCREEN Legal values for LPT are 1 2 3 4 please wait It will take approximately 40 seconds to complete the transfer of information from PC to MiniRAE Plus After the information is sent successfully a message will be displayed 6 27 SECTION 6 COMPUTER INTERFACE FOR MINIRAE gt task completed successfully type any key to continue Type any key the screen will return to main menu Disconnect the interface cable the MiniRAE Plus is now ready for Survey Mode operation If there is any problem during the communication there will be an error message Error 8 gt Target board not connected to the selected LPT or Error 3 gt Verification negative Check the cable to make sure that the connectors on both end of the cable are securely seated in the sockets Try to send information again If after repeated tries the error messages still persist call authorized service center for customer support SECTION 6 COMPUTER INTERFACE FOR MINIRAE 2 Configure for Hygiene Mode To configure the MiniRAE Plus 76 to be in Hygiene Mode type 2a 2b or 2c depending on the choice of the security level and followed by enter key Type 2a level 0 security no change allowed 2b level 1 security change allowed need to enter a password 2c level 2 security change allowed no need to enter a password See section 4 0 for a detailed description of the securit
58. ide better stability and a 3 13 SECTION 3 OPERATION OF ACCESSORIES longer operating life However such a strong lamp may cause the sensor to saturate when high concentration of vapor is measured When to use the Attenuator Ring When high concentration of vapor greater than 500 ppm is expected during normal operation SECTION 3 OPERATION OF ACCESSORIES Installation of the Attenuator Ring To install the ring open the sensor block from the lamp housing put the ring on the 0 5 hole opening on the sensor block Then close the lamp housing making sure that the lamp window is pressed against the ring After the ring is installed go through normal calibration procedures and the unit is ready to operate Removal of the Attenuator Ring 1 When the vapor concentration of interests are usually small less than 500 ppm or 2 When the 11 7 eV lamp is used or 3 When the UV lamp has been used for a long period of time over 6 months and the UV light intensity is low This condition can be detected if you get an Sensor Error message or Calibration Error message from time to time during regular operation In this case removing the Attenuator Ring will increase the light intensity by about 3 times and prolong the usage of the lamp before needing to replace with a new one SECTION 3 OPERATION OF ACCESSORIES This page is intentionally left blank SECTION 4 PROGRAMMING IN HYGIENE MODE 4 0 PROGRAMMING IN HYGIENE MOD
59. iene Mode operation In Survey Mode the TWA reading is the average value over each sampling period concentration in ppm SECTION 2 OPERATION OF MINIRAE PLUS 2 4 Power On Off To turn on the MiniRAE Plus Professional PID Unit press on key The audio buzzer will beep once and the display will show HG x xx or Su x xx to indicate the operating mode and software version number The unit will then go through a self diagnostic routine to check the key components of the unit A dIAG message will be displayed with red back light turned on while the self diagnostic routine is executing The red LED and back light will flash once and buzzer beep once to ensure that they are functional The sampling pump will be turned on and start to draw air sample After about 30 seconds the display will change to instantaneous reading of the gas concentration in ppm if the unit passes diagnostics tests If there is any problem with the unit an error message will be displayed Refer to section 9 for troubleshooting of the particular error condition To turn off the MiniRAE Plus Professional PID Unit press on key The message Off will flash on the LCD display If users really want to turn off the unit press enter key to confirm and the unit will be turned off Press any other key will return the unit to normal operation SECTION 2 OPERATION OF MINIRAE PLUS 2 5 Display Readings The MiniRAE Plus Professional PID Unit can display five
60. iod At the end of each sampling period next sampling period will start automatically The datalogging operation will not stop until another enter key is pressed Note in either option the datalogging operation will stop when enter key is pressed any time during a sampling period User is also allowed to choose to datalog the average value or the peak value of each sampling period see section 5 14 for details The site number will automatically advance to next one when a sampling period is over Users can use select site number menu in programming task to change to a different site number see section 5 4 for details SECTION 2 OPERATION OF MINIRAE PLUS When datalogging is in progress during a sampling period the unit will not respond to menu key input to prevent disruption of the datalogging operation A small letter d will also flash next to the site number to indicate that the datalogging is in progress When the data memory is full 48 readings the unit will start to over write old data Default sampling period The default sampling period for Survey Mode is set to 1 second With this setup every time the enter key is pressed a single reading will be recorded This is particularly convenient for leak detection applications SECTION 2 OPERATION OF MINIRAE PLUS 2 9 Turn Off Buzzer In Hygiene Mode the alarm buzzer can be turned off for 60 seconds by pressing enter key After the 60 second time inte
61. larm limit ppm MENU HA 100 0 Set high alarm limit ppm MENU Hr 00 00 Set hour and minute MENU dA 01 01 Set month and date Key Function in Programming Mode does not function in programming mode increment numerical value for data entry Vv decrement numerical value for data entry ENTER confirm menu selection or accept data entry MENU exit current menu selection go to next menu
62. le diagnosis procedures are unable to determine and remedy the condition a Return Material Authorization RMA will be issued to assure proper repair and logistics tracking Warranty does not extend to any equipment malfunction or damage which results from alteration accident theft misuse abuse abnormal use improper or unauthorized repairs or improper maintenance RAE neither assumes nor authorizes any other firm or person to assume on RAE s behalf any liability in any way connected with the sale of RAE products THIS EXPRESS WARRANTY SHALL EXTEND TO BUYER OF RECORD ONLY AND NOT TO SALES MADE BY BUYER S CUSTOMERS EXCEPT FOR THE WARRANTY OF TITLE THE FOREGOING EXPRESS WARRANTY IS IN LIEU OF ANY AND ALL OTHER WARRANTIES WHETHER EXPRESSED OR IMPLIED INCLUDING THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY SELLER S LIABILITY UNDER THE WARRANTY PROVIDED HEREIN EXCLUSIVE OF INSURANCE PROCESS SHALL BE LIMITED TO A REFUND OF PURCHASE PRICE For technical support please call 408 481 4985 7 00 AM 5 00PM PST MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL Table of Contents 1 0 GENERAL INFORMATION 0 00 1 1 1 1 General Specifications eeeeeeseeeees 1 2 2 0 OPERATION OF MINIRAE PLUS 2 1 2 1 Physical Description ceeeeeeeseeeeeeee 2 2 2 2 Two Mode of Operation eee 2 4 2 3 ARCYS ANOS Dla owes a Caauiss e 2 6 2 4 Power On Off cst id cecesegleeesion acti
63. libration factor sensitivity to a specific gas For example when the PID sensor is exposed to 100 ppm isobutylene gas the instrument will measure say 10 mV from the sensor When exposed to 100 ppm benzene gas the instrument will measure say 17 5 mV Then the calibration factor for benzene relative to isobutylene is 10 mV 0 57 17 5 mV Appendix C contains a list of calibration factors for common organic vapors There are two ways to use these calibration factors to obtain a calculated concentration of another gas Calibration factor benzene SECTION 4 PROGRAMMING IN HYGIENE MODE 1 Direct reading of a specific gas in ppm step 1 Obtain the calibration factor of a given organic vapor For example benzene has a calibration factor of 0 57 relative to the standard 100 ppm isobutylene gas step 2 Multiply the standard calibration gas value such as 100 ppm of isobutylene by the calibration factor to obtain a compensated calibration standard value for the given gas i e cal factor x standard value compensated value 0 57 x 100 ppm 57 ppm for benzene step 3 Enter the compensated calibration standard value instead of the actual calibration standard value in step 3 of section 4 7 2 For example enter 57 ppm instead of 100 ppm in step 3 Continue to finish gas calibration using the standard calibration gas 100 ppm isobutylene After the calibration is completed the unit will give direc
64. lose the PID covers and replace screws Replace probe assembly SECTION 8 MAINTENANCE Lamp Window Cleaning Procedure For lamps with 10 6 eV or 11 7 eV windows clean the window surface with anhydrous methanol using a cotton swab Rub in a circular motion at moderate pressure After cleaning hold the lamp up to the light at an angle to detect any remaining film Repeat the process until the lamp window is clean Rinse thoroughly with anhydrous methanol to remove any residues on the window Never touch the window surface with fingers or anything which may leave a film CAUTION WATER WILL DEGRADE BOTH 10 6 OR 11 7 EV WINDOW SURFACES DO NOT USE WATER TO CLEAN THE LAMP WINDOW AT ANY TIME SECTION 8 MAINTENANCE 8 6 Pump Replacement The sampling pump is rated for 4000 5000 hours of continuous operation It will consume higher amount of energy and reduce its sample draw capability significantly when approaching the end of the specified life time of the pump As a guide it is recommended to replace the pump at six month intervals if the instrument is heavily utilized during the period 1 Tum off power of the MiniRAE Plus Professional PID Unit 2 Refer to Figure 8 1 unscrew the probe assembly remove four screws and open the Professional PID Unit 3 Refer to Figure 8 1 and carefully remove two screws that hold the pump to the top cover Disconnect two Tygon tubes connected to the pump Note which tube goes to the inlet ba
65. ls bellow 5 3 volt the unit will be tured off automatically Note in Hygiene Mode the alarm signal of the gas concentration exceeding preset limits is a two beeps and two flashes per second The lamp or sensor failure alarm signal is a single beep and a single flash per second The battery low alarm signal is a single flash per second A flashing message of Err xxx x in the LCD display indicates the lamp or sensor failure condition A flashing message of bAt xxx x indicates the low battery condition In addition there will be a single beep per minute to remind users that battery voltage is low Note it is extremely important that when the lamp or sensor failure alarm occurs users should stop the SECTION 2 OPERATION OF MINIRAE PLUS operation of the unit immediately and follow the troubleshooting guide in section 9 to diagnose the problem In Survey Mode the alarm signal is proportional to the magnitude of the gas concentration Therefore when gas concentration exceeds preset limits the alarm signal may vary from a single beep and a single flash per second to a rapid 7 beeps and 7 flashes per second when the high threshold level has been exceeded The higher frequency of alarm signal indicates higher gas concentration The lamp or sensor failure alarm signal is a single beep and a single flash per second The battery low alarm signal is a single flash per second A flashing message of Err xxx x in the L
66. lue Then press enter key to confirm the value Display then shows the actual digit entered and moves the flashing digit to the next digit to the right 4 Repeat step 3 until all four digits are entered 5 If the entered password is correct the unit shows the first programming menu The first menu option is to set STEL alarm limit The LCD display will show a message of SA Xxx x If the entered password is not correct the unit will display an error message and return to normal mode operation Should menu key be pressed prior to step 4 the unit will abort the password entry and return to normal mode operation Note if the security level of the unit is set to either no change allowed level 0 or change without password level 2 this password entry menu option will not be displayed SECTION 4 PROGRAMMING IN HYGIENE MODE 4 4 Set STEL Alarm Limit l Set STEL alarm limit option is the 2nd menu option in Table 4 1 Display shows SA xxx x with the left most digit flashing where xxx x is the previously stored STEL alarm limit To modify this limit starting from the left most digit use up or down arrow key to change the digit value and enter key to confirm the digit the flashing digit will move on to next digit to its right Repeat this process until all 4 digits of the new STEL alarm limit are entered To preserve the previously stored STEL alarm limit press menu key at step 1
67. mouse to pull down the sub menu Move the cursor to the desired function in the sub menu and click the left button of the mouse to activate the function There is also a tool bar beneath the menu bar The frequently used functions are represented in this tool bar in the form of a small icon For example the Send function in the Communication sub menu is represented as a small arrow with the letters SEND When the Mouse cursor a small arrow is positioned near each icon in the tool bar a short text will also appear at the bottom of the Window to describe the function of this icon This tool bar allows users to invoke a function conveniently by clicking on the icon without going through the sub menus SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 4 Receive Data from MiniRAE Plus In order to receive data from MiniRAE Plus users first have to connect the MiniRAE Plus unit to a PC as described in section 6 2 From the main menu of ProRAE 76 software select the Receive function from the Communication sub menu or click the Receive icon left arrow with Recv letters from the tool bar A message will appear Receiving data please wait for about 20 Sec After the data is received successfully a dialog box will be shown indicating that the Receiving Process is completed Click the OK button the data will be displayed in graphic form automatically Note the data can also be displayed in text format using the Data function from
68. nect the standard reference gas to the probe Turn on the gas press enter key on the MiniRAE Wait for about 30 seconds until the gas reading appear on the LCD SECTION 3 OPERATION OF ACCESSORIES display This reading should be very close to 1 10 of the actual gas value If the value is off a little bit use the Allen wrench to adjust the set screw Note user has to loosen the lock nut first then turn the set screw Turn set screw clock wise will decrease the ratio and increase the reading Turn set screw counter clock wise will increase the ratio and decrease the reading Step 4 After the exact ratio of 10 1 is achieved tighten the lock nut Press enter key to accept the value and turn off gas This complete the calibration procedure Now the dilution probe will always dilute the incoming sample by a ratio of 10 1 Special consideration for calibrating the dilution probe using Tedlar bag method When calibrating the dilution probe it is highly recommended that a Tedlar bag be used instead of using a fixed flow regulator with the gas bottle directly because the fixed flow regulator will try to force a fixed amount of gas sample into the probe while the clean air is sucked into the probe by the sampling pump of the MiniRAE This will create uneven pressure between the two passages inside the dilution probe and causes errors in the mixing ratio Using Tedlar bag method can avoid this uneven pressure problem and achieve more accurate
69. ns during the programming task as summarized below Table 4 2 Function in Programming Task on This key does not function during programming task up Increment numerical value for data entry down Decrement numerical value for data entry enter Confirm menu selection menu Exit current menu selection and go to next menu option SECTION 4 PROGRAMMING IN HYGIENE MODE 4 3 Entering into Programming Task CAUTION Do not operate programming task in the potentially hazardous environments that require continuous protection The real time monitoring of gas concentration will be interrupted during programming task 1 The Professional PID Unit should already be turned on before entering the programming task If it is not on refer to section 2 4 for the power on sequence 2 Press menu key to enter programming task Display then shows Pd 0000 with the left most digit the most significant digit flashing User should enter a password starting from this flashing digit Note 1 Prior to factory shipment the Professional PID unit was installed with 0000 as the default password Enter 0000 if the password has not been changed by an authorized users SECTION 4 PROGRAMMING IN HYGIENE MODE Note 2 For added security 0000 is always displayed instead the actual password at this step 3 Ifthe correct digit value is not 0 use up arrow key or down arrow key to increase or decrease the digit va
70. nto hard disk User can also run this program directly from the floppy disk See instruction in Section 6 12 2 on how to run the program directly from floppy disk SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 12 1 Installation of ProRAE 76 for DOS Insert the ProRAE 76 diskette supplied with the basic kit into the A drive This is the first disk drive on most PC which usually accept 3 5 diskette If the A drive accepts 5 25 floppy please call the factory for a free copy of the ProRAE 76 in 5 25 floppy format Do not use the second disk drive or B drive for installation Make sure that you select the correct disk format for A drive From the DOS prompt type a install followed by enter key C gt a install enter Note the bold face letter shows the keys to be entered by the user The talic letter shows the computer response The software will automatically install itself onto the C drive hard disk drive of the PC under a newly created directory called PRORAE After the software is successfully installed a message will be displayed to indicate that the installation is completed KOKK K K K K K K K K K K K K K K K K K K K K K K K K K K K K K K FK K K K K K K K K K Installation Completed To start type prorae and hit Enter KKK K K K K K K K K K K K K K K K K K K K K K K K K 2K K K K K K FK K K K K K K K K ok SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 12 2 Operation of ProRAE 76 for DOS Step 1
71. ntration alarm limits and change time and date of the real time clock The programming is menu driven to provide intuitive end use operation The display shows the menu option and the key pad is used for the menu selection or data entry to each menu option SECTION5 PROGRAMMING IN SURVEY MODE 5 1 Menu Options The programming menu for Survey Mode includes 11 menu options as shown in the Table 5 1 below User enters the programming menu by pressing menu key The first menu option will appear in the display User can use the other three keys to perform the desired programming tasks At the completion of each menu entry the display will automatically advance to next menu option Pressing the menu key will exit the current menu option and move to the next menu option After sequencing through all 11 menu options the unit will retum to normal operation Each option is explained in the following sections The flow chart of the programming task in Survey Mode is shown in Appendix B SECTION 5 PROGRAMMING IN SURVEY MODE Table 5 1 Menu Option Display Site selection SIE xx Select calibration data GAS x Zero gas calibration CO xxx x Enter standard gas value Clu xxx x Standard gas calibration Cl xxx x Set sampling period in seconds SP xxxx Clear all data Cir ALL Set low alarm limit LA xxx x Set high alarm limit HA Xxx x Change time hour and minute Hr xx xx Change date month and date dA xx xx 1 2 3 4 5 6 7 8
72. omatically exit the programming task and return to normal operation In order to return to programming task press menu key again During the programming task press menu key will abort and exit the current menu option and go on to the next menu option on the list At the completion of each menu setup entry the unit will automatically advance to next menu option Each option is explained in the following sections The flow chart of the Hygiene Mode programming task is shown in Appendix A Note the security level of the instrument determines which menu option will be displayed during programming task The security levels associated with each menu option is listed in Table 4 1 For example if an instrument is setup to have level 1 security then all ten menu options will be displayed during programming task If the security level is set to 0 then only five menu options will be displayed Table 4 1 Menu Option Display level 4 2 SECTION 4 PROGRAMMING IN HYGIENE MODE Verify password Pd 0000 Set STEL limit SA XXX x 01 2 Set TWA limit tA XXX X 01 2 Set Peak limit PA Xxx x 01 2 Zero gas calibration CO xxx x 1 2 Standard gas value Clu xxx x Standard gas calibration C1 xxx x Clear all data CLr ALL Change hour and minute Hr xx xx Change month and date dA Xx xx Note 1 xxxx is the previously stored data SECTION 4 PROGRAMMING IN HYGIENE MODE 4 2 Keys for Programming Task The five keys perform a different set of functio
73. onal PID Unit Remove the probe assembly 2 Use a tweezers to remove and replace the small O ring and the membrane filter from the round hole on the front of the sensor block Make sure that the O ring is seated correctly Otherwise the sampling probe will not be air tight 3 Attach the probe assembly Check for air leakage see section 8 4 SECTION 8 MAINTENANCE 8 3 Sensor Module Cleaning During the course of normal operation a film of gas vapor may build up inside the sensor module The rate at which the film develops depends on the type and concentration of the vapors being sampled As a guide it is recommended to clean the sensor module upon returning from field work The sensor module is made of four major components as shown in Figure 8 2 Moisture filter and O ring Sensor block Lamp house Lamp and O ring HEX NUT ALIGNNENT MARK LAMP HOUSE ORING 1 2 HEX HEAD SCREV Figure 8 2 Disassembly and Assembly of Sensor Module of Professional PID Unit SECTION 8 MAINTENANCE Sensor Module Cleaning Procedure l 2 Tum off power of the MiniRAE Plus Professional PID Unit Refer to Figure 8 1 unscrew the probe assembly remove four screws and open the MiniRAE Plus Professional PID Unit Remove the sensor module by gently pulling the module away from the PCB of the top cover Refer to Figure 8 2 and carefully remove 4 hex nuts from the back of the lamp house Remove the lamp and O ring Also remov
74. ons 2 9 2 5 Display Readings eeeceeeseceeeseeeeeeees 2 10 2 6 Alarm SASHA vies acdc iden das beitengescnesseaioane 2 12 2 7 Preset Alarm Limits and Calibration Data 0 00 ec eeeeeeeeeeeeeneeeeeeenes 2 14 2 0 Datalogging acc cecsssessseosevaieocaneaeteaanousees 2 15 2 9 Turn Off UZ ZL i a 2 18 210 Back LAB vis scenes niena AG iat aes 2 19 2 11 Special Power on Sequence ee eeeeee 2 20 2 12 Diagnostic Power on Sequence 0 2 21 2 13 Disconnect Battery sacs 5 ynesuaivesge sav inteeaays 3 22 3 0 OPERATION OF ACCESSORIES 3 1 3 1 Charging of MiniRAE Plus eee 3 2 3 2 Sample Gas Collection ceeeeeeeeeeeees 3 4 3 3 Remote Access Prove 7242 0 sss estve waveeavnens 3 5 3 4 Audio Interface Adapter and Earphone seniii aiii 3 6 3 5 Analog Signal Output eee eeeeeeeeeeees 3 8 3 6 Water Trap Disks Asch nccetimeieeiees 3 10 3 7 Dilution Probe 2 44 6ccsc xa ssaccssntiades eecdareasiaass 3 11 MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL 3 8 UV Attenuator Ring eee eeeeeeeteeeeeeeee 3 14 4 0 PROGRAMMING IN HYGIENE MODE 4 1 4 1 Menu OPM ONS 5225 35 oiecosces cass coasacevecsyees 4 2 4 2 Keys for Programming Task 0 ee 4 4 4 3 Entering into Programming Task 4 5 44 Set STEL Alarm Limit 000 cee 4 7 4 5 Set TWA Alarm Limit 0 ccc 4 8 4 6 Set Peak Alarm Limit 0 cc eeceeeee 4 9 4 7 Calibration of MiniRAE Plus
75. or in the middle of step 2 the unit will abort the STEL alarm limit entry and move to the next menu option Note if the security level of the unit is set to no change allowed level 0 step 2 will not have any effect on the previously stored alarm limits Users can view the limit but can not alter the limit SECTION 4 PROGRAMMING IN HYGIENE MODE 4 5 Set TWA Alarm Limit 1 Set TWA alarm limit option is the 3rd menu option in Table 4 1 Display shows tA xxx x with the left most digit flashing where xxx x is the previously stored TWA alarm limit 2 To modify this limit starting from the left most digit use up or down arrow key to change the digit value and enter key to confirm the digit the flashing digit will move on to next digit to its right Repeat this process until all 4 digits of the new TWA alarm limit are entered 3 To preserve the previously stored TWA alarm limit press menu key at step 1 or in the middle of step 2 the unit will abort the TWA alarm limit entry and move to the next menu option 4 Note if the security level of the unit is set to no change allowed level 0 step 2 will not have any effect on the previously stored alarm limits Users can view the limit but can not alter the limit SECTION 4 PROGRAMMING IN HYGIENE MODE 4 6 Set Peak Alarm Limit 1 Set Peak alarm limit option is the 4th menu option in Table 4 1 Display shows PA xxx x with the left most digit flashin
76. ow alarm limit When gas concentration is bellow this limit the alarm will not be activated The minimum value for this low limit is zero 1 Set low alarm limit option is the 8th menu option in Table 5 1 Display shows LA xxx x with the left most digit flashing where Xxx x is the previously stored low alarm limit 2 To modify this limit starting from the left most digit use up or down arrow key to change the digit value and enter key to confirm the digit the flashing digit will then move on to next digit to its nght Repeat this process until all 4 digits of the new low alarm limit are entered Note if the low alarm limit is higher then the high alarm limit the data entry will be aborted and the previously stored low alarm limit will be restored 3 To preserve the previously stored low alarm limit press menu key at step 1 or in the middle of step 2 the unit will abort the low alarm limit entry and move to the next menu option SECTION5 PROGRAMMING IN SURVEY MODE 5 10 Set High Alarm Limit In Survey Mode users are allowed to define a high alarm limit When gas concentration exceeds this limit the alarm will be activated at the highest frequency The high limit and low limit also define the range whereby the alarm signal will vary its frequency The maximum value allowed for high limit is 999 9 1 Set high alarm limit option is the 9th menu option in Table 5 1 Display shows HA xxx x with the left
77. p 3 After the instrument configuration is completed send it to the instrument as described in section 6 9 The appropriate data type option will be setup correctly in the instrument now SECTION5 PROGRAMMING IN SURVEY MODE This page is intentionally left blank SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 0 COMPUTER INTERFACE FOR MINIRAE PLUS Each MiniRAE Plus Professional PID kit is shipped with an integral software package called ProRAE 76 and a computer interface cable This software package offers additional capabilities to the basic MiniRAE Plus PID instrument to enhance its functionality This software package runs on any IBM compatible Personal Computer PC under Windows 3 1 and later environment It allows users to re configure the MiniRAE Plus Professional PID unit to either Hygiene or Survey Mode to set alarm levels to select security level and password for Hygiene Mode and to select datalog options for Survey Mode It also allows users to retrieve datalog results from the instrument in order to perform data analysis report generation or record keeping Installation and operation of this software package is described in following sections Note a DOS version with similar capabilities of the ProRAE 76 software is also included for users who prefer to use DOS operating environment in their PC See section 6 12 for details on installation and operation of the DOS version of ProRAE 76 software Compatibility and Di
78. p correctly in the instrument SECTION 4 PROGRAMMING IN HYGIENE MODE 4 12 Change Password In Hygiene Mode authorized users are allowed to set a password for the instrument so that when level 1 security is selected for the instrument users have to enter a valid password in order to enter the programming task The password has to be set up by ProRAE 76 software in PC See section 6 for details on how to install the ProORAE 76 software on PC how to interface the MiniRAE Plus instrument to PC and how to change password in PC A brief summary of the steps includes Step 1 From the main menu of the ProRAE software Open the Hygiene Mode configuration hygiene CFG file from the File sub menu then choose Instrument Setup function from the Options sub menu The PC display will show a dialog box as shown in Screen 6 9 Step 2 Move cursor to the password section of the menu and type in the 4 digit password Step 3 After the instrument configuration is completed send to the instrument as described in section 6 9 The new password will now take effect in the instrument SECTION 5 PROGRAMMING IN SURVEY MODE 5 0 PROGRAMMING IN SURVEY MODE The MiniRAE Plus Professional PID Unit is built with a microprocessor to provide programming flexibility In Survey Mode operation users can choose a new site number select one of two calibration data re calibrate the unit change the sampling period clear data memory change the gas conce
79. peration The water trap disk will prevent liquid to be suck into the PID unit by accident If water is suck into the disk the air flow will be reduced significantly and the pump will stall Users can stop the unit immediately when observing water inside the disk or hearing the pump stalling SECTION 3 OPERATION OF ACCESSORIES 3 7 Dilution Probe A dilution probe device is offered as an accessory to the MiniRAE Plus Professional PID unit This device mixes one part of incoming gas sample with 9 parts of clean air to dilute the concentration of the gas sample by 10 times The clean air is obtained through a charcoal filter Install dilution probe Remove the regular probe Make sure that O ring and a membrane filter remain inside the hole on the front of the sensor block Screw on the dilution probe Calibrate dilution probe In the factory the dilution probe is preset at approximately 10 1 ratio with about 5 10 error User can adjust the dilution probe during calibration using a 5 64 Allen wrench to achieve exact 10 1 ratio Here is how Step 1 Connect the Zero gas to the probe follow the instructions in section 4 8 1 to calibrate the zero gas Step 2 Follow the instruction in section 4 8 2 to enter the standard reference gas value Note enter only 1 10 of the actual value of the standard gas not the actual value For example if the calibration gas is 500 ppm enter 50 in this step do not enter 500 Step 3 Con
80. r of the instrument 1 level O security in this level users can view three alarm limits and the current time and date in programming task They are not allowed to make any changes 2 level 1 security in this level users have to enter a 4 digits password before they can enter the programming tasks Once in the programming task they are allowed to change all menu items 3 level 2 security in this level users are allowed to make any changes in programming task There is no need for a password to enter the programming task The security level has to be set up by ProRAE 76 software in PC See section 6 for details on how to install the ProRAE 76 software on PC how to interface the MiniRAE Plus instrument to PC and how to set up security levels in PC A brief summary on how to set up security level in PC includes Step 1 From the main menu of the ProRAE software Open the Hygiene Mode configuration hygiene CFG file from the 4 28 SECTION 4 PROGRAMMING IN HYGIENE MODE File sub menu then choose Instrument Setup function from the Options sub menu The PC display will show a dialog box as shown in Screen 6 9 Step 2 Move cursor to the security level section of the menu and choose one of the three security levels by clicking the mouse on one of the three radio buttons Step 3 After the instrument configuration is completed send it to the instrument as described in section 6 9 The security level should now be setu
81. r off Pd 000 0 verify password ENTER 4 times enter 4 digit password MENU SA 025 0 Set STEL limit ppm MENU tA 010 0 Set TWA limit ppm MENU PA 050 0 Set Peak limit ppm MENU CO 0 0 Zero gas reading ppm ENTER reset reading to zero MENU Clu 100 0 Enter standard gas value ENTER 4 times enter 4 digit 0 999 9 GAS On turn on gas bottle CAL calibration in progress C1 100 0 standard gas reading reset reading to std value Clr ALL Clear all data Y or N Hr 00 00 Set hour and minute dA 01 01 Set month and date General Message sensor or lamp failure low battery voltage clear data in progress calibration error SURVEY MODE Display Meaning Su X xx power on and version dIAg diagnostic in progress 00 0 0 site 00 and real time reading ppm v 0 0 TWA reading ppm 0 0 Peak reading ppm bAt 6 0 battery voltage V on off backlight 00d 0 0 start stop datalog Su X xx power on with diagnostics OFF 0 0 turn off power Y or N confirm power off SItE 00 enter site number 0 49 MENU GAS 1 select gas cal data 1 or 2 MENU CO 0 0 Zero gas reading ppm ENTER reset reading to zero MENU Clu 100 0 Enter standard gas value ENTER 4 times enter 4 digit 0 999 9 GAS On turn on gas bottle ENTER CAL calibration in progress C1 100 0 standard gas reading ENTER reset reading to std value MENU SP 0001 enter sample period sec MENU Clr ALL Clear all data Y or N MENU LA 010 0 Set low a
82. rb and which goes to the outlet barb of the pump Disconnect the electrical wire from the pump to PCB Remove the pump 4 Replace anew pump Connect the electric wire Connect two Tygon tubes to the pump and tighten the pump to the top cover with two screws Make sure that the two Tygon tubes are free of any kink and are not caught under the sensor module 5 Close the MiniRAE Plus Professional PID Unit covers and replace screws SECTION 8 MAINTENANCE 6 Replace the probe assembly 7 Turn on the MiniRAE Plus Unit Wait for the pump to come on Check to see if air is drawn into the gas inlet tube If the pump works correctly when the gas inlet is blocked by a finger the pump noise should change and a strong suction force will be felt SECTION 9 TROUBLESHOOTING 9 0 TROUBLESHOOTING Table 9 1 Can not turn on Reasons Bad battery connection Discharged battery Defective battery Microprocessor hang up Battery switch is off Solutions Check battery connection Charge or replace battery Reset microprocessor by turning off and then on battery switch no LED or Reasons Defective LED or LCD LCD back light back light Solutions Call authorized service center Buzzer Reasons Bad buzzer inoperative Solutions Call authorized service center SECTION 9 TROUBLESHOOTING Possible Reasons amp Solutions Reading Reasons Dirty or wet sensor abnormally Dirty probe assembly high Dirty membrane filter Solutions Cle
83. ront to hold the screw in place Do not over tighten these hex nuts because the soft Teflon parts can be damaged easily Make sure that the coaxial cable tan color with a lug is attached to the lower right screw opposite to the screw with yellow cable attached before putting on the nut Note it is easy to put the sensor block upside down Make sure that the sensor block with a slanted edge and an alignment mark is line up with lamp housing having a similar alignment mark on the edge If the sensor block is installed upside down the round hole on the front of the sensor block will not line up with the opening on the front of the unit housing 8 Referring to Fig 8 1 insert the sensor module into the three holes on the PCB Make sure that the two Tygon tubes are 8 8 SECTION 8 MAINTENANCE free of any kink and are not caught under the sensor module Close the MiniRAE Plus Professional PID Unit covers and replace probe assembly SECTION 8 MAINTENANCE 8 4 Probe Assembly Cleaning During the course of normal operation significant amount of dust and particles can be drawn into the sensor module A dust filter steel wool is inserted into the cavity at the base of the probe assembly to remove these dust and particles The rate at which the dust and particles accumulate depends on the working environment As a guide it is recommended to replace this dust filter once a week 1 Turn off power to the MiniRAE Plus Pro
84. rorae76 survey cfg when the corresponding file is opened If users do not need to modify the default instrument configuration from the generic CFG file skip the following steps and go to Section 6 9 directly If users need to modify the configuration choose the Instrument Configuration function from the Option sub menu or click the Configuration icon small boxes with CONF letters from the tool bar a dialog box will appear as shown in Screen 6 9 Hygiene Mode or Screen 6 10 Survey Mode SECTION 6 COMPUTER INTERFACE FOR MINIRAE Screen 6 9 Hygiene Mode Configuration Hygiene Mode Operator ID Site Name Year Password Alarm limits Peak limit T limit STEL limit Security level change not allowed change allowed need password change allowed no password J Save calibration amp clock data Users can now move the cursor to each data entry box to fill in the information such as Operator ID Site Name Alarm Limits etc User can also click on the radio button to choose security levels datalog options or data type etc After all the SECTION 6 COMPUTER INTERFACE FOR MINIRAE information are entered depress Enter key or click OK button Screen 6 10 Survey Mode Configuration Survey Mode Operator ID Site Name Year Password 0000 Alarm limits High limit 100 0 ppm Low limit hoo ppm Sample interval hoo second Datalog option Dat
85. rval expires the buzzer will resume if the alarm condition still exists Note this feature is not available in Survey Mode because the enter key is used to start and stop datalogging operation SECTION 2 OPERATION OF MINIRAE PLUS 2 10 Back Light The LCD display is equipped with a red LED back light to assist the readings under poor lighting conditions This back light can be turned on by pressing the up key When the back light is already on press up key will tum it off Note the LED back light consumes higher amount of energy from the battery and will shorten the operating time of the unit Therefore it is important to tum the back light off when it is not needed SECTION 2 OPERATION OF MINIRAE PLUS 2 11 Special Power on Sequence In MiniRAE Plus Professional PID Unit all data are automatically retained in non volatile memory even if the power is turned off Users can therefore turn off the unit and turn it back on to resume the operation without losing previously stored data during normal operation The MiniRAE Plus also provides a special power on sequence in Hygiene Mode to clear all data e the values of TWA STEL Peak concentrationand 48 STEL readings taken at 15 minutes interval and start recording new data at power on time This is accomplished by pressing menu key first holding it down and then pressing on key to turn on power Note during the special power on sequence the display will show a CLr
86. s which indicate when the unit was last turned on and off when the peak occurred and when the TWA alarm occurred if any will also be recorded In Hygiene Mode the datalogging operation is activated automatically when the unit is turned on When power is turned off the data will be retained in non volatile memory At each turn on time the previously stored data will not be cleared and the unit will continue to record data If users wish to clear the data at power on they need to follow the special power on sequence as described in section 2 11 When the data memory is full 12 hours of STEL readings the unit will stop recording new data and the previously stored data will not be over written Survey Mode SECTION 2 OPERATION OF MINIRAE PLUS In Survey Mode the MiniRAE Plus Professional Unit will allow users to record up to 50 readings of average or peak gas concentration over a specified sampling period In addition a time stamp and a site number will also be recorded together with each reading The sampling period can be programmed from 1 second up to 9999 seconds Users are allowed to select one of the following two different datalog options 1 manual sampling option in this option users have to press enter key to start each sampling period When a sampling period is over the datalogging operation will stop 2 continuous sampling option in this option users press enter key once to start the first sampling per
87. shing digit will move to next digit to its nght Repeat this process until all 4 digits are entered 4 Now the standard calibration gas value is entered Display shows a flashing message of SECTION 4 PROGRAMMING IN HYGIENE MODE GAS On to remind user to turn on the standard calibration gas bottle now After the gas bottle is turned on press enter key to continue the standard gas calibration procedure as described in section 4 7 3 5 Any time during step 2 or step 3 if the menu key is pressed the data entry operation will be aborted It is also assumed that user want to skip the standard gas calibration procedure and move on to the next menu item Therefore it is very important that all 4 digits are entered i e press enter key 4 times even if user does not want to change the standard calibration gas value in step 2 SECTION 4 PROGRAMMING IN HYGIENE MODE 4 7 3 Standard Reference Gas Calibration Figure 4 2 shows the typical installation of standard reference gas calibration It includes e Calibration adapter with flow controller e Reference gas bottle of 100 ppm isobutylene Figure 4 2 Standard reference gas calibration setup SECTION 4 PROGRAMMING IN HYGIENE MODE Standard Gas Calibration Procedure 1 Insert the calibration adapter into the gas inlet tube of the Personal PID Unit and connect the calibration adapter with the standard gas bottle as shown in Figure 4 2 2 Continue from the step 4 of
88. start ProRAE 76 for DOS program Type prorae followed by enter key to start the program C PRORAE gt prorae enter Users should see following main menu FKK K K K K K ee ee K K K K K 3K K K K K K K FK K K K FK K K FK 2K K 3K K K K K 2K K 3K K K ProRAE 76 DOS version for MiniRAE Plus Professional PID Unit V 2 30 Date 3 22 95 KK K K K K K K K K K K K K K K K 3K K K K K K K K K K K K K K FK 2K K FK K K K K K K K K K Menu Selection Configure MiniRAE Plus for Survey Mode la manual sampling datalog peak 1b manual sampling datalog average Ic continuous sampling datalog peak Id continuous sampling datalog average Configure MiniRAE Plus for Hygiene Mode 2a Level 0 security no change allowed 2b Level I security change allowed need password 2c Level 2 security change allowed no password 3 Read Data Back from MiniRAE Plus 4 Exit Enter SECTION 6 COMPUTER INTERFACE FOR MINIRAE To run the program directly from floppy drive place the diskette into A drive type C a enter A cd prorae enter A PRORAEX prorae enter Step 2 connect MiniRAE Plus Connect the MiniRAE Plus Professional PID unit to the parallel port of the PC as described in section 6 2 Note this step is a very important step If the unit is not connected correctly to PC there will be error messages during data transfer Step 3 choose menu operations From the main menu users can choose
89. t most digit flashing where xxxx is the previously stored sampling period in seconds To modify this period starting from the left most digit use up or down arrow key to change the digit value and enter key to confirm the digit the flashing digit will move to next digit to its right Repeat this process until all 4 digits of the new sampling period are entered Note If 0 second is entered the entry will be ignored and the previously stored sampling period will be used To preserve the previously stored sampling period press menu key at step 1 or in the middle of step 2 the unit will abort the data entry and move to the next menu option SECTION5 PROGRAMMING IN SURVEY MODE 5 8 Clear Data The Professional PID unit stores up to 50 single readings of the time weighted average of the gas concentration The time hour and minute at the end of each sampling period will also be recorded for each reading These stored data can be cleared by selecting the clear data menu option 1 Clear data option is the 7th menu option in Table 5 1 Display shows a flashing Clr ALL message 2 If users want to clear data press enter key to confirm the menu selection All 50 datalog values and time stamp numbers will be erased 3 Press menu key will move to the next menu option without clearing the data SECTION 5 PROGRAMMING IN SURVEY MODE 5 9 Set Low Alarm Limit In Survey Mode users are allowed to define a l
90. t reading in ppm when exposed to a specific gas In this example the instrument will display 100 ppm when exposed to 100 ppm benzene gas 2 Manual conversion of readings for a specific gas step 1 Calibrate the instrument using standard calibration gas as described in sections 4 7 2 4 7 3 step 2 Obtain the calibration factor of a given organic vapor see the list in Appendix C For example benzene has a calibration factor of 0 57 SECTION 4 PROGRAMMING IN HYGIENE MODE step 3 When exposed to a specific gas multiply the instrument reading by the calibration factor manually The result is the calculated value in ppm for the specific gas For example if the instrument is calibrated using isobutylene gas When exposed to 100 ppm benzene gas it reads 175 4 Multiply this value by the calibration factor of benzene 0 57 The result is 100 ppm which is the actual concentration of benzene Note the calibration factor is used to provide an approximate reading for a given gas while using another gas such as Isobutylene as reference gas during calibration The specified measurement accuracy of MiniRAE Plus Professional PID can be met only through using the actual gas directly during the calibration process SECTION 4 PROGRAMMING IN HYGIENE MODE 4 8 Clear Data The Professional PID unit calculates and stores the values of TWA STEL Peak concentration and 12 hours of STEL readings taken at 15 minutes interval a total of 51 re
91. t the back of the unit This will prevent the battery from being deeply discharged viii MINIRAE PLUS OPERATION AND MAINTENANCE MANUAL 3 The battery switch also serves as a reset switch for the microprocessor inside the MiniRAE Plus Professional PID unit If for some reasons the unit is hang up for example no response to key press or display funny characters on LCD display turn off the switch and then turn it on again should reset the microprocessor SECTION 1 GENERAL INFORMATION 1 0 GENERAL INFORMATION MiniRAE Plus is a Programmable Professional Photo Ionization Detector PID to measure organic vapors in hazardous or industrial environments It incorporates a sampling pump and data download capabilities for continuous toxic monitoring site survey and leak detection applications It can measure two classes of toxic gases 1 organic vapors with the supplied 10 6 eV gas discharge lamp and 2 chlorinated compounds with the interchangeable 11 7 eV lamp available as in optional accessory Features are e Lightweight and Compact 18 oz cellular phone size e Dependable and Accurate rugged design microprocessor control e User Friendly menu driven intuitive end use operation e Programmable Alarm Thresholds audio buzzer amp flashing display alarm MiniRAE Plus PGM 76K consists of a Professional PID unit AC charging adapter interface cable user manual calibration accessories and a hard transport
92. ta GAS x menu zero gas cal CO xxx x ti enter std value Clu xxx x menuj std gas cal C1 xxx x menu ti sample period SP xxxx clear all Clr ALL low limit LA Xxx x menu high limit HA xxx x menu change time Hr xx xx men change date dA xx xx B 2 APPENDIX C RESPONSE INFORMATION APPENDIX C RESPONSE INFORMATION Calibration factors for a number of commonly used organic vapor for 10 6 eV lamp is included in Table C 1 Table C 1 Correction Factors for the 10 6 eV lamp Factor Cyclohexene 090 Emwee 99 APPENDIX C RESPONSE INFORMATION sopropylalcohol 60 Methyl ethyl ketone 0 86 Methyl isobutyl ketone Methyl methacrylate 14 a a 0 58 A 2 4 8 af 8 0 58 Propylene 17 Tetrahydrofuran B The calibration factors in Table C 1 are measured relative to 100 ppm Isobutylene gas at 50 relative humidity and 250C These factors may change at higher concentration level or different temperature and humidity conditions 1 1 1 1 1 APPENDIX D QUICK REFERENCE GUIDE HYGIENE MODE Display HG xxx power on and version dIAg diagnostic in progress 0 0 real time reading ppm v 0 0 STEL reading ppm v 0 0 TWA reading ppm 0 0v Peak reading ppm bAt 6 0 battery voltage V on off backlight mute buzzer for 1 minute CLr power on and clear data HG xxx power on with diagnostics OFF 0 0 turn off power Y or N confirm powe
93. the ProRAE program From the main menu of ProRAE software type 4 to exit the program and return to DOS prompt Note if the ProRAE program is terminated abnormally due to communication errors or file name specification errors etc the main menu may not be displayed and the normal DOS prompt may not be shown Users should always type 4 or type Ctrl C hold Ctrl and C keys simultaneously to quit the program and return to normal DOS prompt SECTION 6 COMPUTER INTERFACE FOR MINIRAE 6 12 3 Enter Serial Number Each MiniRAE Plus Professional PID unit is assigned a unique 6 digits serial number in the factory This number is shown on the label on the back of the unit This same number is also stored in the computer memory so that during datalogging operation the serial number is printed on the data report The unique serial number is loaded into the non volatile memory of each unit in the factory It will not be erased even if the battery is removed A DOS program is provided to allow user to re enter the serial number into the unit if for some reasons that the serial number is altered or erased Note in some older units the serial number is not entered into the computer memory at the factory User need to enter the serial number SECTION 6 COMPUTER INTERFACE FOR MINIRAE Here is the procedure to enter the serial number Step 1 connect MiniRAE Plus Connect the MiniRAE Plus Professional PID unit to the parallel port
94. the previous section the display should show a flashing message of GAS On Turn the flow controller knob counter clockwise about half a turn to start the flow of gas then press enter key Display shows CAL for about 30 seconds while the instrument performs calibration Afterward the display shows C1 xxx x where C1 indicates that this is the standard calibration gas and xxx x is the actual gas reading in ppm based on new calibration data Note the reading should be very close to the value of the given calibration gas e g 100 0 ppm If the reading is higher or lower than the standard gas value and continues to rise slowly it means that the calibration gas has not been stabilized yet Wait a few more seconds until the reading is stabilized then press enter key again Every time the enter key is pressed the instrument measures the current gas concentration and calibrate accordingly The new reading should be closer to the standard gas value Repeat this process a few more times if necessary until the reading is stable and sufficiently close within 1 or 2 ppm to the 4 17 SECTION 4 PROGRAMMING IN HYGIENE MODE standard gas value This completes the standard gas calibration procedure 3 Press menu key to exit the standard gas calibration procedure and move to next menu item 4 Turn the flow controller knob fully clockwise to tum off the flow of gas Disconnect the calibration adapter from the Personal PID
95. the unit find a small switch between the battery charging jack and the multi interface jack Use a ball pen to move the switch to OFF position down When the switch is in OFF position the battery will retain 85 of its charge after 6 months Note when the battery is switched off the real time clock will stop However the calibration and datalog information will be preserved for at least 10 years Reset Microprocessor The battery switch also serves as a reset switch for the microprocessor inside the MiniRAE Plus Professional PID unit If for some reasons the unit is hung up no response to key press or display funny characters on LCD display turning off the switch and then turning it on again should reset the microprocessor SECTION 3 OPERATION OF ACCESSORIES 3 0 OPERATION OF ACCESSORIES There are a number of accessories for MiniRAE Plus Professional PID Unit 110 V AC charging adapter Gas outlet port adapter and sample collection Tedlar bag Remote access probe 8 ft Audio interface adapter cable and earphone Analog interface adapter cable Water trap disk Dilution probe UV attenuator ring The operation details of these accessories are explained in the following sections SECTION 3 OPERATION OF ACCESSORIES 3 1 Charging of the MiniRAE Plus On the rear side of the MiniRAE Plus Professional PID Unit there is a battery charging jack which is normally covered by a protective rubber
96. y level for Hygiene Mode operation The factory default setup for Hygiene Mode is level 1 security Note when option 2b is entered a new screen will be displayed to ask for a password YOUR CURRENT PASSWORD IS XXXX Please enter a new 4 digit password then press enter key if you type more than 4 digit number only the first 4 digits will be stored as new password Type in a four digits password here and followed by enter key It will take approximately 40 seconds to complete the transfer of information from PC to MiniRAE Plus After the information is sent successfully a message will be displayed 6 29 SECTION 6 COMPUTER INTERFACE FOR MINIRAE gt task completed successfully type any key to continue Type any key the screen will return to main menu Disconnect the interface cable the MiniRAE Plus is now ready for Hygiene Mode operation Save calibration and clock data After a new configuration is sent to the MiniRAE Plus the previously stored measurement data will all be erased and the default alarm limits will be used However the calibration data password serial number and real time clock information will be preserved in the unit so that users do not need to re calibrate or re enter password serial number and real time clock information To erase all data including calibration data password serial number and real time clock information type hygiene or survey followed by enter key from D
97. y may be replaced in the field if required It is recommended to recharge the MiniRAE Plus Professional PID unit upon returning from field work A fully charged battery powers MiniRAE Plus Professional PID unit for 10 hours continuous operation The charging time is less than 10 hours for a fully discharged battery The charging circuit uses a two step constant voltage charging method to prevent over charging WARNING TO REDUCE THE RISK OF IGNITION OF HAZARDOUS ATMOSPHERES RECHARGE BATTERY ONLY IN AREA KNOWN TO BE NON HAZARDOUS REMOVE AND REPLACE BATTERY ONLY IN AREA KNOWN TO BE NON HAZARDOUS SECTION 8 MAINTENANCE Recharging Professional PID Unit 1 Turn off power of the Professional PID unit 2 Open the rubber cover on the bottom side of the PID unit and connect the AC adapter or the automotive DC charging adapter depending on the power source to the power jack 3 There is a bi colored LED inside the LED window which will provide an indication of the charging status Red battery is being charged Green charging is completed No Light bad connection or defective battery 4 Make sure that the indicator LED turns red to indicate that the unit has made good contact and is being charged After the LED tums green the unit is fully charged Replacing Battery 1 Tum off power of the MiniRAE Plus Professional PID unit 2 Refer to Figure 8 1 unscrew the probe assembly remove four screws that hold the back cover of

MiniRAE Plus - Industry Surplus Australia

Contents

Download Pdf Manuals

Related Search

Related Contents