CID 3002-1101 2C Operators manual.book
Contents
1. Start LDS 3000 instrument Press F1 Start LDS 3000 instrument A new window is now displayed Passuordt FC Tine until start LOSSk LC Siemens Laser Analytics 37 BIT Protected Mode Edition Enter the first character in your password within five seconds otherwise the system automatically starts up at the lowest level You have 10 sec onds to enter the password Information about user levels can be found in User level on page 15 Press F1 Quick start The system will start at the lowest user level At this level you do not have the possibility to change any setting Press F2 to cancel the start up 13 More options Press F2 More Options to enter the following window The functions under More Options are used in association with Siemens Laser Analyt ics AB 2002 04 24 16 30 07 PBS bb gt 3000 Ammonia NH Cy a Weight 17 032 Hore Options Exit H nd go te pos omand Prompt Press F1 to run a single session of the measurement program in LDS 3000 This is used when Press F3 Exit Menu and go to DOS Command Prompt if you need to access the file structure in LDS 3000 This requires an external keyboard Return to the start up window by pressing 1 followed by return at the DOS promt C Press F2 and the following window will appear 2007 04 74 16 30 38 Tine 16 30 ET ook and Date Bret uncrestore Here you can set the system clock You also make backup on pres2. Siemens Laser Analytics m Siemens Laser Analytics AB Oct 2001 LDS 3000 Operators manual Document number CID 3002 1101 Rev 2C Compatible with software LDSSK ver 5 3 Content Introduction Overview 2 1 Central unit CU 3000 2 2 Hybrid Cable FC 3000 2 3 sensor CD 3002 Measurement principle Basic functions 4 1 The built in keyboard 4 2 The screen 4 3 Start LDS 3000 4 4 User level 4 5 Turn off LDS 3000 4 6 Display modes 4 7 Main window 4 8 Settings window 4 9 Alarm table Calibration 5 1 Calibration procedure Alarm 6 1 Alarm indications in LDS 3000 6 2 Set the alarm limits for the relay modules 6 3 Calibrate transmission level 6 4 View connected I O modules 6 5 View I O configurations 6 6 Status line and alarm table 6 7 Viewing temperature from input modules External connections Communication 8 1 The communication window in LDS 3000 8 2 status messages on LDS 3000 8 3 System reboot by a connected user Service mot Ge 10 10 12 LS 16 16 21 22 24 21 27 29 29 ol 32 33 36 36 39 4 43 43 47 48 49 LDS 3000 Operators manual Introduction The LDS 3000 is a system for on line gas analysis providing continuous presentation of accurate measurements The gas concentration is measured using line absorption spectroscopy Cross sensitivities to other gases are eliminated in the measurements due to the spatial purity of the laser enabling sele
3. 4 20 mA output on pins 5 and 6 in the same way as the primary gas It is possible to activate optional output inputs The following table de scribes optional connections ONoaohKWNE 41 Parameter Hotte output Trans RMS The optical transmission in Analog output 0 200 the optical path can be monitored The 100 is set at cali transmission level must first be cali bration of transmis brated and then a 4 20 mA output is sion available Measurement path temperature When Analog input standard is 4 20 mA the temperature in the measurement vol Lan O a here ume is varying within large limits it is possible to compensate for this Measurement path temperature In some Analog output Fin to Tmax applications LDS 3000 can derive the temperature in the process gas from the spectroscopic data This temp signal will then be delivered as a 4 20 mA signal Transmission alarm Digital output Gas concentration alarm Digital output Gas concentration alarm secondary gas Digital output There is a limited number of I O connections and LDS 3000 can only be equipped with as many I O s as there are connections available However with 30 connections Note available there is normally no shortage of I O connections especially not in a system with less than three channels Communication This chapter describes the remote communication with LDS 3000 The remote system calling LDS 3000 can be a standard PC running t
4. accordingly calibration value path length concentration in the calibra tion cell or the path length is set to 1 meter during calibration It is important that appropriate values for temperature and pressure are used 2 The measured value is observed and when it is stable press the func tion key labelled Calibrate 3 Press the function key labelled Calibrate gas conc followed by the function key Calibrate gas conc channel where the appropriate channel number should be used 4 The new calibration state will be permanent when the function key labelled Save Settings is pressed The new parameters will then be saved on disk 5 Return to the Main window by pressing F6 The calibration is now completed The time and the result of the calibra tion are stored in the log file in the system Alarm This chapter describes all available alarms and diagnostics methods of the LDS 3000 system This includes all settings and configuration possi bilities Alarm indications in LDS 3000 Summary alarm L1 The summary alarm is controlled by a number of conditions When all conditions are fulfilled the relay will be closed and the I O ports activated No measurement values is valid when L1 is active Users with the lowest user level can only use the function Reset Alarm Main window Alarm Table Alarm table The L1 relay output will always have the same state for all channels since it reflects the operating conditi
5. and should only be performed by personnel from Siemens Laser Analytics AB or by certified personnel at site Calibration procedure The calibration procedure is self explanatory All relevant parameters like the concentration of calibration gas etc are entered This function is only available for operators with the user level Normal or higher Main window Calibration Ocha Channel2 MN Channel3 ee o au E e Se ee status Calibration window If an external calibration cell is used the settings for path length temper ature and pressure must be changed to appropriate values for the exter nal calibration cell When the calibration is completed these settings must be restored 1 The calibration is carried out by flushing the calibration gas in the measurement path or by placing the calibration cell in the measure ment path The calibration cell is marked with a number referencing 27 28 its calibration protocol which includes concentration and calibration date If a calibration cell is used please note that the fibre has to be connected to the cali bration unit located in the receiver of the sensor unit and that the detector must be ED moved to the calibration unit and attached properly Also please note that this cali bration cell is calibrated assuming a 1 meter path length If the instrument is set up using a different path length the calibration concentration entered above must be changed
6. instrument These inputs are all equipped with EMC filters to assure stable operation of LDS 3000 in electrically difficult environments Connecting thermocouples directly on the input module in side CU 3000 can induce severe drift problems 39 LDS 3000 Operators manual External connections There are provisions for a large number of external connections LDS 3000 is by default equipped with a 4 20 mA output for each gas val ue measured Also an alarm output for the optical transmission level in the measurement channel is provided in the standard configuration As an instrument alarm the 4 20 mA outputs for gas concentration are all at Q mA when the system is not working properly or when it is shut down All outputs inputs are EMC protected The I O ports are located on the rear of LDS 3000 on 10 screw joints per channel maximum 3 1234567 8 910 RER 12345 6 7 8 910 BREE EEEE HE 1234567 8 910 RER External connections The following connections are active for each channel by default Gas conc same range as the horizontal bar graph in LDS 3000 Gas conc Transmission OK relay open Common Gas conc for second gas or temperature when applicable Gas conc Transmission level in measurement channel Transmission level 9 4 20 mA input for instance temperature in measurement path 10 4 20 mA input If LDS 3000 is configured to measure two gases the second gas will have a
7. nax The input current range of the analog modules for temperature measure ments connected to LDS 3000 is set here The usual setting is 0 20 mA or 4 20 mA but it can have any range InRange The type of the input modules connected to LDS 3000 must be config ured at start up This pop up menu contains the types supported by LDS 3000 and the proper choice must be made here OutRange The type of the output modules connected to LDS 3000 must be config ured at start up This pop up menu contains the types supported by LDS 3000 and the proper choice must be made here ModSelect This parameter is not yet implemented Exchanging data with other sensors In many cases the calculation of a concentration value depends on other parameters such as temperature pressure concentration of other gases like water etc These parameters can be transferred to LDS 3000 via 4 20 mA modules The other sensor can be another LDS 3000 measuring for instance water or it can be a thermocouple delivering a temperature value The ranges and limits for these parameters are set here Chan The settings under Ranges and Limits are channel specific and the ap propriate channel is selected here 1 through 3 Ranges C Lo and C Hi This is the lower and upper range limits for the incoming or outgoing concentration values When two LDS 3000 are interconnected these set tings must coincide LDS 3000 can not act as a receiver and transmitter at
8. specific measurement channel such as low transmission etc is not reported here since these type of alarms are no summary alarm Function keys Reset alarm Pressing F1 resets the alarm Relay status Pressing F2 brings up a window that shows what LDS 3000 is currently sending out to the I O modules Not available in the user level Quick Start I O modules Pressing F3 shows information on connected I O modules See the Ref erence Manual Not available in the user level Quick Start I O Addresses Pressing F4 shows information on all I O modules possible to connect to LDS 3000 See the Reference Manual Not available in the user level Quick Start Back Pressing F6 you return to the Main window 25 Basic functions LDS 3000 operators manual Calibration LDS 3000 is calibrated before delivery Due to the measurement principle and the continuous on line calibration control no further calibration is normally necessary However if for some reason the instrument needs to be recalibrated it can easily be done on site i e with a calibration cell located in the receiver of the sensor head Compensation parameters for pressure and temperature are stored in LDS 3000 before installation and after discussions with the customer If temperature vary significantly it can be measured and fed into LDS 3000 using an optional analog input This option is not available for pressure The calibration procedure is critical
9. the same time Valid interval is O to 100 000 ppm Limits These settings are used as a quality check of the incoming parameters If for instance a thermocouple fails the signal will fall outside these limits and the measured value will be replaced with a default value represent ing an educated guess of the actual value TL Lo and TL Hi This is the lower and upper range limits for the incoming temperature values CL Lo and CL Hi This is the lower and upper range limits for the incoming concentration 39 values View I O configurations This feature is available for users who configure the system s I O mod ules The following list shows the different I O modules that can be at tached to the system and how the modules should be configured Main window Alarm table I O Addresses 1 0 MODULE SETTINGS ETES HuDanm Fr 36 Show Setup Of Complete I O list window The following is shown in this window 1 The module s addresses hexadecimal ranging between 01 and 73 2 The module type The following types are currently available Analog Output Used for concentration temperature transmission levels Digital Output Used for alarms relays Analog Input Commonly used for temperature input 3 The module usage field explains for what the individual modules are intended The following module functions are currently available Gas Conc Alarm Level Temperature Transmission Water Conc exten
10. very bright and has a viewing angle of more than 160 The outline of the screen is shown below Main screen system time Window name User on line status line Message line Screen outline Main screen Here is where text input and measurement values are presented There are several different appearances on this part of the screen System time Current time is displayed This is the time that will be stored in the sys tem log every time an event is stored Window name The name of the actual window Use this when you consult the manual User on line This text line continuously shows the name of any externally logged on user Status line Here the systems reports the status of the measurements Here you can see errors alarms etc For more information on status codes see Status messages on LDS 3000 on page 47 Message line In this line you see a number of different messages from LDS 3000 You se for instance system responses on illegal key sequences activity on the serial port etc The table below shows the different messages 11 Adaptive key labels 12 mme O No Session User of LDS 3000 is trying to communicate with a remote user when no one is connected No Modem LDS 3000 fails to initialize the modem Response Indicates that an external user logged on User LogOff Indicates that an external user logged off SMS Success LDS 3000 informs that a SMS message was successfully trans fully Sent mitte
11. L User Interface DLL 2 0 6475 Hardware DLL 1 9 60351 Settings scripts DLL 7 0 8084 Mi gr Te fl gr Ji i fl zl pF f fl ui DOS Ha jor Hinor Oo on pli cpi THT Hajor Hinor HS Major Minor YCPI Major Hinor TPU Ver Rew DA Hodule Type CPUINFO Ha jor Minor o o System information Service F5 The Service window is for service purposes only and is described in the Reference Manual 20 Back F6 Return to the Main window Main window The Main window is the normal overview window and shows the meas ured values numerically and as a horizontal bar graph The bar graph has the same range scaling as the 4 20 mA current output Main window Function keys Alarm table When you press F1 the alarm table is accessed In the alarm table you find information on alarms that have occurred You can also reset the ta ble Display modes Users Language About Service When you press F2 you can select one of two possible alternative dis play modes Numeric Display and Graphic Display Furthermore you can select your user level Settings When you press F3 you enter the window for changing the measure ment parameters See the section Settings Calibrate With the function key F4 labelled Calibration you display the Settings window with a button set for calibration See the chapter Calibration Not available in the user levels Quick Start and Ba
12. Settings to store these levels View connected I O modules When the LDS 3000 starts up it connects all available modules in the I O network automatically The list of connected system modules can be viewed in the I O modules window It takes a few seconds after start up before the system has located all connectable I O modules 33 Main window Alarm Table I O modules dan HuDanm Show List Of Connected I O modules window The list contains information about every module The normal user can only view these parameters For a user with system user level it is possi ble to change the parameters in the I O modules such as communica tion port module types and scaling I O module settings Changes here should only be performed by certified personnel COM Port This is the port used for the RS 485 transferring between LDS 3000 and the I O modules The system supports two ports and the default setting does normally not need to be changed IRO Vector The request for interrupt setting only needs to be changed when the com port is altered The following IRO s should be used COM1 IRO4 COM2 IRO3 In Tin and In Tax The input temperature range of the analog modules for temperature measurements connected to LDS 3000 can be set corresponding to the transducers in the process The lower setting 0 1999 degrees must not be higher than the upper setting 1 2000 degrees 34 In Anin and In A
13. a necessity and the cross duct sensor seen below is a suitable sensor The standard sensor is CD 3002 and it consists of a transmitter and a re ceiver intended to work Cross Duct In the transmitter there are provi sions for connection of a fibre optic connector and in the receiver there are a photo detector and some electronics The sensor is also available in an EX version Normally the sensor optics needs to be protected from the measurement environment There is a number of ways to accomplish this The stand ard approach is to use pressurized instrument air at a flow of up to ap proximately 120 ltr min The sensor can be equipped with a number of options such as heater for the instrument air in line calibration path fan purging steam purging etc If the sensor needs maintenance it is easily removed from its flange by means of a quick connect The removal and relocation of the sensor does not require realignment Thus the sensor optics can very easily be cleaned if needed For more information on the sensor delivered with this instrument see the separate Sensor Manual Cross duct sensor CD 3002 1 0 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 Measurement principle The LDS 3000 measures the gas concentration by using line absorption spectroscopy lf the absorption of a gas mixture is plotted versus the wavelength it can be seen that absorption only takes place at certain wavelengths in the spectr
14. age was successfully sent from LDS 3000 to the external client Message not sent Your message was not sent at this time because of ongoing communica tion Try later Executing The host is running an executable batch file on LDS 3000 his message 4 48 flashes until the task is completed Receiving file The host is sending a file to LDS 3000 his message flashes until the task is completed Sending file LDS 3000 is sending a file to the host This message flashes until the task is completed Transfer stopped Transfer of the file was stopped The reason can either be that the host cancelled the operation or that a file storage error occurred System reboot by a connected user Reboot message It is possible for users in the remote system with sufficient privileges to perform a reboot of the system for instance when an upgrade of the soft ware has been done The operator of LDS 3000 will be informed about the reboot A user connected to LDS 3000 has selected to reboot the system in order to be able to update the software Please select Override if you wish to cancel this operation This enables you to delay the reboot to a more convenient time Service During normal use of LDS 3000 the central unit needs no service The sensors and their optical surfaces will need regular maintenance De pending on application and purging method the interval may be be tween 1 and 12 months Cross duct s
15. al region These extremely narrow absorption peaks are referred to as absorption lines see figure below H 0 154 7 1 543 1 5435 1 544 1 5445 1 545 1 5455 1 546 Absorption lines The measured gas here ammonia is identified by comparing with the spectrum from a built in reference cell To perform line absorption spec troscopy the LDS 3000 uses a diode laser as light source since its spec tral width is much narrower than the width of the absorption line Furthermore the wavelength of the laser can be selected to be near one absorption line of the gas to be measured By varying the current and temperature the laser wavelength is tuned to cover the required narrow spectral range which includes the absorption line When tuning the laser light over the absorption line it is partially absorbed From the received laser signal the area beneath the absorption line can be extracted which is a measure of the gas concentration The light emitted from the laser is split into three beams The first beam passes through a reference gas and is then detected This reference sig nalis used for continuous self calibration and zero point determination of the system taking temperature and pressure into account The second beam is used for measuring the intensity of the laser and provides the control unit with information relating to the state of the laser The third beam is conducted via the optical fibre with the E2000 connectors to the sensor head wher
16. al state is Yes It s state is not reflected on any relay I O Modules OK Is activated if any I O module fails to respond Normal state is Yes Channel x 1 3 ADR xx The hexadecimal number attached with each module when being ad dressed by the software Low Transm Alarm L2 This field shows Yes when the transmission level goes below the alarm limit The normal state is No This limit is set in the Settings window High Conc Alarm L3 This field shows Yes when the measured primary gas concentration level exceeds the alarm limit Normal state is No This limit is set in the settings window DeltaP High Detected Normal state is No The DeltaP High indication is not assigned to any relays and will only be shown on the status line alarm table and within these fields High Water c L4 only in a two gas instrument This field shows Yes when a second usually water gas type concen tration level exceeds the alarm limit Normal state is No Other options for this alarm function may exist in special applications The high water L4 field is only shown when the system is set up to measure a second gas type commonly water The limit is set in the settings window Set the alarm limits for the relay modules The alarm limits for the relay modules are set in the Settings window Here we only describe the alarm parameters For information about the other parameters and function keys see the sectio
17. be obtained With a PC running Windows 95 98 ME or Windows NT 2000 LDS 3000 can also be operated remotely via the serial port either directly local mode or via modem This requires the optional software LDSComm in stalled on the remote computer All aspects of LDS 3000 can be controlled in this way An interface to LabView National Instruments is also available Introduction LDS 3000 operators manual Overview The LDS 3000 consists of a central unit CU 3000 hybrid cables and a sen sor The hybrid cable contains optical fibres and a low voltage electrical cable 24 V and connects the different types of sensors available with the central unit System setup with cross duct sensors Central unit CU 3000 CU 3000 incorporates a control panel with display built in keyboard control computer laser reference cell control electronics for the laser and slots for up to three receiver channels A PC card PCMCIA card is used hold the software and necessary files for the operation This simpli fies the software updating which is done remotely through the serial port ore simply just be changing PC card No moving media like hard drives are used LASER GAS ANALYZER LDS 3000 SIEMENS Central unit CU 3000 The control computer an industrial X86 PC is mounted in a computer housing together with a display driver a data acquisition card and a TPU Time Processing Unit The last two units are handling the timing an
18. ctive detection of indi vidual absorption lines The LDS 3000 consists of a sensor pair measuring head and a central unit connected using optical fibre cables The central unit and the sensor can be installed several hundred meters apart The light source is a diode laser whose wavelength can be tuned within a narrow spectral range An optical fibre guides the light from the central unit to the sensor where it is directed into the measuring section The laser beam passes through the gas in the measuring section and is par tially absorbed there The light attenuated in this way is detected by the receiver and is returned to the central unit The variation in the intensity of the laser light in the vicinity of the absorption line is measured and the concentration of the gas being measured is calculated using the second harmonic of the detected signal The LDS 3000 can measure at up to three measurement locations simul taneously To extend the number of measurement points an extra receiv er board in the central unit extra I O modules and an extra sensor with cabling is added per channel The LDS 3000 operates as an independent unit An 85 264 VAC main power supply is all that is required The gas concentration and instru ment status are indicated on the graphical display The gas concentra tion is also continuously given as an analog 4 20 mA output As options several other parameters such as transmission level and different alarms can
19. d Not Allowed User of LDS 3000 is trying to send a text message when the serial line is busy Try again later Packet Csum LDS 3000 received a packet with a check sum error This can Error indicate a bad phone line LDS 3000 informs that a text message was successfully trans mitted Receiving File LDS 3000 informs that a file presently is being received sending File LDS 3000 informs that a file presently is being transmitted Transfer Stopped The transfer was stopped by the external user Incoming text Incoming text messages can be shown here if this option is message chosen by the external user Message A text message has been received from an external user and is Received available in the communication window Got Unknown LDS 3000 received a packet that was unknown This could be a Packet compatibility problem Adapting key labels There are six function keys immediately to the left of the screen These keys change function depending on what the operator is working with at the moment This function is labelled on the adapting key labels Start LDS 3000 After installation the power to LDS 3000 is turned on with the main pow er switch at the rear After power up which takes about 30 seconds the start up window is displayed 2002 04 24 15 34 42 tart LOS 3000 nstrunent LDS 3000 Ammonia NH Hore Options iy Weight 17 032 Start up window In the start up window you have two alternatives
20. d acquisition of data In a fully equipped system the control computer measures at three points at a speed of 24 times second Depending on the measurement situation a response time down to 0 1 s is achievable The central unit also handles a large number of I O units for 4 20 mA in put output and relay output The I O setup is completely flexible and can be configured to the customers specification As an example LDS 3000 can present concentration and transmission values 4 20 mA give alarms on system fault summary alarm and transmission drop relay and read process temperature 4 20 mA It is also possible to connect to the serial port on LDS 3000 either directly or via modem With sufficient privileges all aspects of LDS 3000 can be controlled this way This option is preferably used before service visits to diagnose the status of LDS 3000 Hybrid Cable FC 3000 The hybrid cable is constructed for very harsh environments and con sists of two optical fibres one for transmission of the laser light to the measurement volume and one for the return of the detected signal Two electrical wires are used for powering the electronics in the sensor 24 VDC Electrical wires Multi mode fibre Single mode fibre Hybrid cable FC 3000 Sensor CD 3002 There are several sensor designs available for the LDS 3000 system The choice of sensor depends on the measuring situation For reactive gases such as ammonia in situ measurement is
21. ded O Temperature Status line and alarm table On the status line alarm codes concerning the current system status are displayed It is also possible to obtain a more detailed description about the alarm in the alarm table where you will find information about the date and time of the occurrence Different types of messages have differ ent duration period depending on the message s nature and the degree of importance Each displayed message also has a delay while it is in the background until it can occur again The following table describes the U CR ct er U ct O x ct Minimum Alarm duration sec as Meaning comment The momentary analog data conversion was invalid and could not be used for measurement System may require restart gt J Q Q AP 1 3 There is currently a gas concentration alarm on the given channel primary gas type and the L3 relay for this channel is now closed This alarm is not displayed in the alarm table AS 1 3 There is currently a concentration analysis alarm on the given channel second gas analysis type and the L4 relay is now closed This alarm is not displayed in the alarm table AT 1 3 The transmission level for the given channel is below the accepted level L3 relay is closed in the digital out put module associated with the channel This alarm is not displayed in the alarm table TRM The reference channel s transmission level has gone below t
22. e amount of times the alarm has occurred Many messages will also contain information about probable causes and the eventual action needed Notice that the order of the message does not say anything about their importance neither does the time of its lat est occurrence Main window Alarm Table 38 Alarm Table Use the F1 key to reset alarm Most of the displayed messages are also appended to a log file which will be viewable when using the communi cation software LDS Communication Client LDSComm The log file only contains brief and shortened text entries of the occurred system events Viewing temperature from input modules Some systems are supplied with a temperature analog input module ac cepting an input of 4 20 mA If LDS 3000 is configured to measure only one gas it is possible to activate a second bar graphs for each active channel in the Main window showing the process temperature in C This temperature reading is also available as an analog output if an ap propriate output module is connected and configured The temperature value is also available in the Settings window as usual This option only applies to one gas systems since only two bar graphs can be dis played simultaneously Configuring the system can only be done by trained person nel with the highest privileges The input modules are mounted on the door in CU 3000 However the connection must always be done via the inputs on the back of the
23. e it enters the measuring section When the laser light passes through the gas in the measuring section it is partially absorbed The light is detected by the receiver and after signal conditioning the signal is converted to an optical signal and returned to the central unit using the multimode optical fibre with the SMA connectors A block diagram of LDS 3000 is shown below Central unit mums Laser light 9 Electrical signals as Return LED light CPU and Laser presentation control Signal Diode processing laser Optical Py coupler R A Reference cell Hybrid cable Measurement path Smoke stack J Block diagram of LDS 3000 The concentration of the measured gas is calculated from the absorption spectrum for the measurement channel P Any change in the meas urement conditions for example as a result of a higher dust load in the flue gas or contamination of the optical components is compensated for automatically to guarantee accuracy of the measurement results under a wide range of operating conditions Basic functions The system software is built up as a hierarchy structure Normally the in strument is operated from the Main window The Main window is the top level in the structure From here you use the function keys FT to F6 to reach the other windows levels in the structure The top level can be reached from the other windows using the lowest funct
24. efault setting is 9600 and is acceptable in most sit uations Com type Off In this position you cannot logg on Incoming calls are ignored This is the preferred setting when no modem line or phone line is connected Local In this mode it is possible to access LDS 3000 via a null modem cable if the client system is located close to LDS 3000 The only signals that need to be connected in the cable are RX amp TX CTS RTS shall not be con nected in this cable External modem The system is connected to an external modem on one of the dedicated communication ports The modem modem settings must comply with the following e Baud rates up to 38 400 bps e Compatibility with Hayes AT industry standard e Handle hardware controlled flow control and error correction External GSM modem The system is connected to an external modem on one of the dedicated communication ports The modem modem settings must comply with the following e Baud rates up to 38 400 bps e Compatibility with Hayes AT industry standard e Handle hardware controlled flow control and error correction 45 46 Init String At start up any modem connected to LDS 3000 is initiated with one or more init strings that are passed to the modem The commands in the default init strings complies to the Hayes standard The modem is also re initiated after shout down and also every 10 seconds if the modem is in the idle state se table above The defaul
25. ensor If the transmission in a channel drops below the level set by the user the sensor in this channel needs to be serviced cleaning of the optical sur faces or realigning of the optical path The procedure for this is de scribed in the sensor manual Semi extractive in situ sensor If the flow rate of the gas drops below the level set by the user the sin tered steel filter needs to be cleaned or replaced All other types of service must be carried out by authorized personnel on ly For more detailed information about the different sensors refer to the manual for the respective sensors Calibration check Using the optional calibration cell CC 3000 the calibration can be checked at any time Normally the LDS 3000 does not have to be calibrat ed but due to local regulations the calibration has to be checked with reg ular intervals The calibration procedure is critical and should only be performed by personnel from Siemens Laser Analytics AB or by certified personnel at site 49 LDS 3000 Operators manual
26. ent sys 14 tem parameters settings in this window If an old setting needs to be re stored this is also done in this window User level If you started at the lowest user level you can set your privileges at run time You must navigate to Display Mode F2 Users Window F3 and User Level F3 Enter the appropriate password and press Enter The fol lowing parameters can also be set in this window Screen saver Sets the time in minutes from the last key operation until the screen sav er becomes active When in screen saver mode press any key to activate the display Language Select language for the menus The language is changed immediately and the action will blank the display for a couple of seconds Main window Display Mode User Level ENTER PASSHORD 0 DISABLES PRIVILEGES There are five different user levels and they are described in the table be low A user with higher privileges has access to all functionality at the level below To disable privileges Level 1 enter 0 and press Ent Quick start User can view the main window the settings win dow the alarm table and the about window Basic 2 User can view the service window the I O module windows and the communication window 19 16 RC PE Normal User can modify settings in the settings window and can perform calibrations Service User can modify settings in the settings window and can communicate with connected clients Use
27. he appli cation LDS Communication Client LDSComm under Windows 95 98 or Windows NT with a modem installed and configured One important feature of LDSComm is its possibility of logging measurement data onto the client hard drive LDSComm is optional software and is described in detail in a separate Manual LDS 3000 creates a record of all communica tion activities on the PC card The related settings are described below This menu is not available for user level Quick Start The actions in the communication window normally requires a standard PC keyboard connected to LDS 3000 by opening the back door and con necting it in the appropriate connector The following describes the functions available when using LDSComm The communication window in LDS 3000 The basic setting i e Com type and communication with the client is done in the Communication window Ifa text message is received from the remote system it is shown with the preamble Text message in the Status line It is also possible for the sender to force the message to show on LDS 3000 automatically Then the Communication window will auto matically appear and to continue where you were you must press the key Resume Activity Main window Communication window Communication window 43 Function key Resume Activity F1 Return to the window displayed when the message was received Parameter settings F2 Brings up keys that allows you to mod
28. he set limit and the L1 relays on all digital out put modules are now closed The laser current has given an incorrect reading dur ing a non accepted period of time When not in privi leged mode this will normally cause the software to restart MXX A previously connected I O module has stopped responding and has been disconnected from the net work XX is the module hexadecimal address MO MU ZD An internal mathematical error has occurred in the software Measurement is currently invalid The con nections should be verified Reference channel s position is not accepted L1 is closed may be temporary Reference channel s amplitude is not accepted L1 is closed may be temporary This alarm is specific for the oxygen temperature measurement Math domain error Fine Scan Mode started False Beer Lambert calibration constant Max transmission level reached Monitor level deviates from normal 3 Minimum duration Meaning comment Reference Delta Phase level exceeds maximum level Delta Phase level for measurement channel exceeds maximum level No pattern detected fatal Transmission in reference channel deviates more than 30 from normal Alarm Table The alarm table contains a table presenting a history of the last four alarms that have occurred of different types The user resets the alarms in this window Any status message presented keeps information about occurrence date time and th
29. he system ID and the system configuration may also be found 19 Main window Display Modes About LDS 3000 gt System Identification SyotemHanme Location GasTypets Serial Ho fl Altoptronic Hot specif ied lt unset gt 08 license Ho DEH CRC 16 Checksum Structure Version Software Version Optocard Revision Optocard Serial TT i 7 5 wI u t v or fl 3 m m Gas ptonodule Comment ia ft 5 System identification Main window Display Modes About LDS 3000 System Information CPU Speed Hornmalized SEC 3x56 PentiumProtR td 0EM CPU IEH Conp z 7 u E lt ololz ee alee g TEIR MERE mt m 5 it 5 al w Fr i 3 z Intel Clone RAM Capacity 397 756 KE Henory Load 44 Free RAM Total 239436 KE Total Disk Space 976 590 ME Used Disk Space 0 00 HE Free Disk Space 976 50 ME 100 00 x uI of vit rio Jz J gr g fe 5 er m J 2 J F Ca g gr c ha M gr T j 4 Ji Enh Virtual 8086 mode Support I O Breskp support Time Stamp Cnt TSC Support Rentium Styrle HSRS Support Machine Check Except Support CPU has Local APIC Pentium 34 Motherboard rchitechture HS memory Present J N ji M X EF ii T T a er gr Ta Ji Free Disk Space Ji nf i J 4 B235 1 7 8049 1 9 804 7 Main Progran Build Adam DLL 1 0 GasCalc DL
30. ify the parameters on this window Main window gt Communication window Parameter settings 4h Parameter settings Parameter settings COMM INFORMATION User Identifies the connected user This user must be stored on the systems PC card Level This shows the privilege level of the connected user se User level on page 15 Transfer status Shows the present activity on the serial port Message Meaning Idle waiting LDS 3000 is ready and waits for an external user to con nect mita LDS 3000 is initializing the modem and or the serial port Text Mode LDS 3000 is in text transfer mode Binary Mode LDS 3000 is in binary transfer mode ee OOO sending SMS LDS 3000 is sending a SMS message to a mobile phone or to an email account Hanging up Comm Err Connection error LDS 3000 is trying to disconnect LabView Bin LDS 3000 is connected to LDSComm in LabView mode and transfer is progressing Preparing LDS 3000 is preparing to send or receive a file Done XX File transfer is ready to XX Hanging up The external user has requested LogOff which now is in action Executing LDS 3000 is executing a DOS command on request from the external user Baud rate sets the baud rate for the external connection In local mode this can be set to 5 600 The connected user and the system must be set to the same baud rate The accepted baud rate depends on the quality of the tele phone line used The d
31. in C This can be set manually if no temperature signal is provided by the process If an external temper ature signal is connected the actual temperature value will be displayed Pressure The actual absolute pressure in the measuring path in mbar Transm Non normalized transmission in actual channel Measured gas Presents the actual measured gas concentration Resp time The system response time can be set from 0 1 sec up to 24 hours The fastest practical response time is determined by the actual operating conditions Using a short response time in a measuring situation with large and rapid transmission variations e g caused by a heavy dust load will result in a noisy concentration signal Each installation needs testing to work out the proper response time Unit selects the unit for the measured gas ppm percent mg Nm EU or mg Nm US Lower The lower limit for the bar graph presentation and 4 20 mA output Upper The upper limit for the bar graph presentation and 4 20 mA output Calibration gas sets the concentration of the calibration gas Purge C Sets the content of measured gas in the purging gas normally zero This parameter is important when oxygen is measured with regular instru ment alr purging Alarm settings Transm Sets the limit a percentage of the RMS parameter below which the transmission alarm is activated Gas concentration limit sets the limit above which the co
32. ion key which is labelled Return to Main window The following figure shows the menu structure available for the operator However some windows are not available for low level users The figures in this chapter are taken from a system with the user level Normal All levels in the system are described in the Reference Manual Main window Alarm table Display settings Calibration Communi stop Exit modes window window cation measuring window program Parameter Message settings window Numeric display Graphic User level About Service display LDS 3000 window I O module System System configuration identification information Acknowledge Relay Connected alarm window I O modules Menu tree 10 The built in keyboard Function keys Numerical keys Delete key e Start key 4 6 Stop key Ka 0 Ent Keyboard Function keys The function keys are mainly used to enter the different windows levels in the menu structure Numerical keys The numerical keys are used to enter values in a menu or dialogue field Delete key The delete key is used to delete entered characters When numerical fields are cleared they will be set to the previous value Start key Starts the measuring program Stop key stops the measuring program and exits to the Start up window Enter key The enter key is used to confirm settings made The screen LDS 3000 is equipped with an 11 plasma VGA screen It is
33. n Basic functions on page oF 31 Main window gt Settings window 32 Settings window Alarms Transm A value in percent showing the transmission level where the transm alarm is activated The value can be set between 0 0 and 100 0 and is relative to the calibrated transmission level Primary gas concentration This value field has the same name as the primary gas type e g ammo nia The value is expressed in the same unit as the primary gas concen tration presented in the Main window either ppm mg Nm EU mg Nm US or percent The value can be set within the following ranges For units ppm and mg Nm 0 0 to 1000000 0 For unit percent 0 0 to 100 0 Second gas concentration alarm limit This field is only visible if a second gas type is measured or when some other application specific alarm is active such as temperature The val ue can be set as above Calibrate transmission level The user must calibrate the transmission when the system operates un der standard conditions clean and well aligned sensors and normal dust load The system will use this calibration to determine the value of trans mission degradation You are allowed to calibrate the transmission for one channel at a time Main window Calibration window Calibrate Transmission Store Normal value for Transm RMS window Press the function key for the channel you wish to calibrate nominal transmission levels for Press Save
34. ncentration level alarm is activated Function keys Prev Field With the function key F2 labelled Previous you move the cursor to the previous entry field Next Field With the function key F1 labelled Next you move the cursor to the next entry field 23 Increase With the function key F3 labelled Increase you increment the value in the current entry field with 1 in the least significant figure Decrease With the function key F4 labelled Decrease you decrement the value in the current entry field with 1 in the least significant figure Save settings With the function key F5 labelled Save settings the parameters changes made are saved to disk Back With the function key F6 labelled Return you return to the Main win dow Alarm table Alarm table shows information on the four last types of system alarms that have occurred Main window Alarm Table 24 ee Alarm table This window contains detailed information about alarms that have oc curred since the last alarm reset A new alarm is put at the top of the list The alarm text explains the cause of the error and recommended action Alarms of the same type are only displayed once However you can see how many times each alarm has occurred and the time of its last occur rence The present alarm codes are displayed in the status line at the bot tom of the window The alarm codes are described in Alarm on page 29 Please observe that alarms related to a
35. on of the central unit and not the sensors The conditions for L1 are displayed in the Relay window This window displays the status of the relay modules and a diagram showing the gas absorption lines for all active channels 29 Main window Alarm Table gt Relay Status L4 Alarns Li larns L3 larns 30 Relay status Function key Back F6 Return to the Alarm Table Parameters The dialogue at the top of the window contains the conditions for L1 Reference Shape Accepted The amplitude of the reference channel must be visible in the graph and settled within its boundaries for acceptance during a sufficient period of time depends on the temporal temperature characteristics of the laser heat sink typically 1 to 10 min Normal state is Yes Reference Conc Within Normal The amplitude of the reference absorption line must not go outside 30 of the nominal levels Normal state is Yes Reference RMS Within Range The transmission RMS level of the reference channel must not go outside 30 of the nominal levels or exceed maximum limits Normal state is Yes Mon RMS Within Range The transmission RMS levels from the laser itself must not exceed the preset hardware limitation level varies from system to system or go out side 30 of the nominal levels Normal state is Yes DeltaPH Within Range The Delta Phase is an internal parameter important for the signal condi tioning Norm
36. r can also modify I O module configurations Advanced User can add and remove users in the priority list He can also access and modify settings in all pos sible windows This is the priority level when Sie mens Laser Analytics is logged in to the system After finished operating the system at a higher user level please disable privileges to avoid unauthorized personal manipulating the instrument Turn off LDS 3000 LDS 3000 is turned off by pressing the F6 key labelled Stop in the Main window or by pressing the Stop key You have to confirm the stop by pressing yes F5 or press no F6 to cancel the stop procedure Now it is safe to turn off the power with the power switch at the rear If the measuring program in LDS 3000 is terminated in any other way like in a tem porarily power failure it will automatically restart if the power is turned back on A Note ter it has been off Display modes The Main window is the normal overview window Here the measured values are displayed in a horizontal bar graph and with large numerals including unit The scaling is the same as the 4 20 mA output Also on display here is the Rms parameter which is a measure of the optical transmission level in the measurement path It is always calibrated to 100 during installation and further measurements are thus referenced to this time The measured gas will also be displayed here Status line At the bottom of the screen a status line i
37. s always visible which shows the status of the LDS 3000 For more information se Status messages on LDS 3000 on page 47 Main window Channel 1 02 4 o Ammonia I Beale 105 Channel 3 0 AMMONIA If you press the key Display Mode Users F2 a new button set will ap pear From this you can select three display modes overview windows Numeric Display and Graphic Display Main window Display Mode 16 46 39 Channel 1 02 4 Rms 100 7 oO AMMONIA I P s00 Channel 2 105 Rns 100 0 AMMONIA P s00 Channel 3 o AMMONIS Display mode 17 Large numerals F1 Main window Display Mode Numeric Display 14 33 38 Large Numerals 1 Kanal 1 Annonia pph Select Channel with keys 123 User Siemens Onlin restarting from the Graph Bar graph F2 This mode displays the absorption line from the selected channel thin curve and from the reference channel bold curve Main window Display Mode Graphic Display 14 36 18 Graphic Display 1 Kanal 1 AMMONia 92 4 ppr Select Channel with keys 123 User Sienens Onlin Graphic display About LDS 3000 F4 Pressing this button will display an information window Here you will find information about the program version the name and addresses of Siemens Laser Analytics AB the supplier of LDS 3000 Main window Display Modes About LDS 3000 LDS 3000 mue trornation About LDS 3000 Here the information about t
38. sic 21 Communication Pressing F5 shows the Communication window See Communication on page 43 This item is not available in the user level Ouick Start Stop When you press F6 you stop the measurements and leave the system This action needs confirmation The Start up window is shown Settings window In the Settings window the measuring parameters e g scaling of the 4 20 mA analog output response time and the length of the measurement path is set The settings can t be changed if the operator has logged in with a lower user level than normal Main window gt Settings window BRETON Channel MN Chanel Gas Temp 23 C Gas Temp 23 C Gas Temp 23 C Pressure 1013 mbar Pressure 1013 mbar Pressure 1013 mbar Transm 2084 Transm 1787 Transm 1555 Unit ppm unit ppm Unit ppm SCALING SCALING SCALING Lover 0 Lower tower O __CALIBRATIONS ___ CALIBRATIONS CALIBRATIONS Ammonia 924 Ammonia 195 0 _ Ammonia 38 0 Purge C 0 000 Purgec o0 0 Purge O00 nn 22 status ooN Settings window Parameter settings Channel 1 The name tag of the channel max 12 characters If no keyboard is at hand the characters are entered by first entering a number and then pressing the Increase Decrease and Next Previous keys The Del key removes characters Path Len The length of the measuring path 0 100 m Gas temp The temperature of the measured gas
39. so stored on the log file resident on the PC card in LDS 3000 Status messages on LDS 3000 During communication with a user certain messages can be shown for approximately three seconds in the status line in the lower right corner of the display All of these messages are stored in the system log file The abbreviations shown in the status line are listed below User logged on This indicates that a user has logged on with the correct password The name of the logged on user is displayed User logged off The user has logged off in a correct way Lost contact Contact with the connected user was prematurely terminated A reason for this could be a bad telephone connection If this occurs frequently the modem connection phone plug etc should be checked Hanging up Com error When this happens LDS 3000 has broken the connection because no handshaking has occurred for more than one minute Unknown packet A corrupt data package has been detected A low priority message with a very low occurrence rate Checksum error Not very serious if it happens on rare occasions It means that some of the information during transfer from the host to LDS 3000 was lost A rea son might be a noisy line causing bit errors Text message A text message was sent from the client If the client did not automati cally change the window to the Communication window you must do so manually to read the message Message sent Confirmation that a mess
40. t init string is optimized for the modem type selected under Com type above Some modems for instance if it does not comply to the Hayes standard may require a mod ified init string The modification is done by moving the cursor to the field with the init string and modifying it This operation requires a standard PC keyboard connected to the instrument If the change is per manent the setting must be saved Write Message F3 Brings up keys that allows you to exchange text messages with a con nected user Main window Communication window Write message COMM INFORMATION Messages If a standard keyboard is connected to LDS 3000 it is possible to com pose text messages in the text frame labelled Outgoing text messages and to send them to the connected user When the message is written the function key labelled Send message F1 must be pressed and the message will be sent if it is allowed You will be denied if there is traffic on the connection at the moment just try later Confirmation is shown on the system status line in the lower right corner of the display Each time anew message is written the preceding message can be erased by pressing the function key labelled Clear message F2 Disconnect User F4 Disconnect the modem connection Connected users You can continuously see on bottom left on the screen if someone is logged on and if so who is logged on This information is al
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