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Teledyne gfc 7000ta User's Manual

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1. 2 20 4 20 NOMINAL OUTPUT VALUES STEP CURRENT V 250 OHMS CURRENT V 250 OHMS 1 0 2mA 0 5V 4 1 2 20 5 6 1 4 7 2 1 8 3 40 9 2 2 3 10 4 2 6 4 60 12 8 3 2 13 6 3 4 5 80 16 4 4 1 16 8 4 2 6 100 20 5 20 5 Teledyne Analytical Instruments 247 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 5 8 4 Status Outputs The procedure below can be used to test the Status outputs 1 Connect a jumper between the D pin and the V pin on the status output connector 2 Connect a 1000 ohm resistor between the pin and the pin for the status output that is being tested 3 Connect a voltmeter between the V pin and the pin of the output being tested see table below Under the DIAG SIGNAL I O menu See Section 10 1 3 scroll through the inputs and outputs until you get to the output in question Alternately turn on and off the output noting the voltage on the voltmeter it should vary between 0 volts for ON and 5 volts for OFF Table 10 12 Status Outputs Check PIN LEFT TO RIGHT STATUS SYSTEM OK CONC VALID HIGH RANGE ZERO CAL SPAN CAL DIAG MODE ALRM1 ALRM2 DOIN OD a RR wo hyo 10 5 8 5 Control Inputs Remote Zero Span The control input bits can be tested by the following procedure 1 Connect a jumper from the 5 pin on the Status connector to the x5V on the Control In connector 2 Connect a second jumper f
2. GFC Wheel Housing GFC Motor EXHAUST GAS OUTLET SAMPLE CHAMBER A 1 Sample Gas Flow Pressure SAMPLE _ gt PRESSURE Flow Control Sensor PCA SENSOR Purge Gas Flow Control r Scrubber CO FLOW SENSOR External CO2 PURGE GAS INLET l 5 Purge Gas Pressure Control Figure 10 7 Internal Pneumatic Flow Ambient Zero Pressurized Span Valves Teledyne Analytical Instruments 230 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer SAMPLE GAS INLET Sample Cal PRESSURE Particulate SPAN INLET Filter VENT SPAN 5 og OUTLET x g 2 a Ww zv E a oa g ix os lt IZS INLET I eee O W Q EXHAUST GAS OUTLET oO B N E af n 05 Oi Sample Gas Flow Pressure SAMPLE 26 og Flow Control Sensor PCA SENSOR F 3 23 i 59 Z NO FLOW uw SENSOR PURGE GAS INLET l 5 Purge Gas Pressure Control Figure 10 8 Internal Pneumatic Flow Ambient Zero Ambient Span j Teledyne Analytical Instruments 231 Troubleshooting Model G
3. ID INET HEGN COM2 SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP X X HESSEN VARIATION TYPE 1 SET gt EXIT ENTR accepts the new settings SETUP X X HESSEN RESPONSE MODE CMD SECOND ARY SETUP MENU SETUP X X EXIT ignores the new settings SET gt EDIT EXIT Press to change response mode SETUP X X HESSEN RESPONSE MODE CMD BCC TEXT EDIT ENTR EXIT 6 15 4 6 Hessen Protocol Gas ID The Model GFC 7000TA Analyzer is a single gas instrument that measures CO As such it s default gas ID has already been set to 310 There is no need to change this setting Teledyne Analytical Instruments 157 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 15 4 7 Setting Hessen Protocol Status Flags Teledyne Instruments implementation of Hessen protocols includes a set of status bits that the instrument includes in responses to inform the host computer of its condition Each bit can be assigned to one operational and warning message flag The default settings for these bit flags are Table 6 31 Default Hessen Status Bit Assignments STATUS FLAG NAME DEFAULT BIT WARNING FLAGS ASSIGNMENT SAMPLE FLOW WARNING BENCH TEMP WARNING SOURCE WARNING BOX TEMP WARNING WHEEL TEMP WARNING SAMPLE TEMP WARNING SAMPLE PRESSURE WARNING INVALID CONC The Instrument s Front Panel Display Will Show The Concentration
4. ce eecceeeeeeeeeeeeneeeeeneeeeeeaaeeeseeeeeeeseaeeeeeeaeeeseneaeeesneeeeenaes 229 10 2 2 Typical Sample Gas Flow Problems 0 cee cceeeeeeeeeeeeeeeeeneeeceeeeeeeeaaeeeeeeaaeeeseeeaeeesneeeeeenaeeeseeeeeeneeeeneaaes 232 10 2 3 Poor or Stopped Flow of Purge Ga 0 eee ceeeseeeeeeeeeeeenneeeeeeeeeeeeneeeeeeaaeeeeeneeeeeeaeeeesenaeeeeeneeeeneeeeeeaaes 234 10 3 Calibration Problems aiie aa iare a e e E a A e o aeaa A aAa AE eRe Aee 235 Lo e B R nesese Ireo EE ET E T E T A TOTE 235 10 3 2 Non Repeatable Zero ANd SPan s snciirinariaidnni i E a 236 10 3 3 Inability to Span Touchscreen SPAN Button Not Visible ec ee eeeee cesses eeeneeeeeeenaeeeseeeeeeeenaeeeenaes 236 10 3 4 Inability to Zero Touchscreen ZERO Button Not Visible eee eeeeeeceeeeeeeeeeeeeeeeaeeeeeeeeeeesnaeeeenaaes 237 10 4 Other Performance Problem vrsi 4 exch coved aea e a aa E a Aa sh Genlacen O ia aaa 238 10 4 1 Temperature Proble mS a a a a rea e raa aea AE aae ren esaa oea da darea eaer PE ido aan Endene iaaa ii cide anis 238 10 4 2 Excessive N lSeiiinag ape a a ee eee ddan L EE AE E 240 10 5 Subsystem CHECKOUE nrs nuni pasiima ieoi i oer sive see a aedi aoe EE a oa 241 10 5 1 AC Mains Configuration siais ariig aa a a aA EnA Ee E nE AEA AANE KEE AEON E 241 10 5 2 DC Power SUPDIV sr enie eee ereda aeaa a ae aa a aaa a aaa A E a a AEE a Ra E AE 241 R AEO A E A E E ca OPO OPP 242 Teledyne Analytical Instruments xiii Tabl
5. Local Instrument at IDAS Configuration and Downloaded Data Configuration 3 I CONC ATIMER 800 Records Maximum A CONC1 PPM AVG Set 0 0 Records PNUMTC ATIMER 360 Records Maximum Send To Inst To Inst _ SMPFLW cc m AVG Set 0 0 Record dat a SMPPRS InHg AVG Set 0 0 Records Load Config Auto On Off C CALDAT SLPCHG 200 Records Maximum SLOPE1 INST Set 0 0 Records C OFSET1 INST Set 0 0 Records ZSCNC1 PPM INST Set 0 0 Records iDAS Channel Properties BZRO EXITZA 200 Records Maximum T STABIL PPM INST Set 0 0 Records DETMES mV INST Set 0 0 Records RATIO INST Set 0 0 Records STBSPN EXITSP 200 Records Maximum DETMES mV INST Set 0 0 Records RATIO INST Set 0 0 Records TEMP ATIMER 400 Records Maxamum a TT OBITCMD Maat AVI CaN N Daaa i wo a4 Basc Advanced Basic Settings Channel Name Number of Records Trigger Event ATIMER Z Enable Channel C Hold off C Print Reports iDAS Parameter Properties sania de Parameter CARENE v Automatic Timer Setting Start Date 17 3 2011 v Start Tane 120000 AM Sample Mode INST x pen Seenple Period 0 0 5 DDD HH MM Precision 0 Report Penod 0 5 0 DDD HH MM Store number of samples in aver
6. 2 gt SAMPLE RANGE 500 000PPM_ CO2 387 499 PPMI4 1 l lt TST TST gt CAL SETUP 1 Figure 3 3 Display Touch Control Screen Mapped to Menu Charts Teledyne Analytical Instruments 14 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 3 Rear Panel Cooling Purge Exhaust Sample Serial I O Status Analog Digital Control Ethernet Analog Inputs Fan In Port Port LEDs Outputs Outputs Inputs Port j aA lm Sy E TTT 123456780 MODEL T09 SM 51 Pre orenowo YEAR 7010 PWR 100 129 V 60Hz 20A RANGES STANDARD OPTIONS 50A 470 CCNY mo E mE mo 1e m E E o E E A x Seay rr h SS SS E SS E ey AC Power Vent Span IZS RS232 com2 Model Label USB Connector ji Comm 1 port Comm2 port with Volt Freq Information Comm Port RS232 only RS232 or RS485 Span2 Vent DCE DTE Concentration Port Switch Alarm Relay Figure 3 4 Rear Panel Layout Table 3 2 provides a description of each component on the rear panel Teledyne Analytical Instruments 15 Getting Started Model GFC7000TA Carbon Dioxide Analyzer Table 3 2 Rear Panel Description Component Function cooling fan Pulls ambient air into chassis through side vents and exhausts through rear AC power Connector for three prong cord to apply AC power to the analyzer el n CAUTION The cord s power specifications specs MUST comply
7. SETUP C 4 RANGE TO CAL LOW lt SET EDIT SETUP C 4 RANGE TO CAL LOW LOW HIGH ENTR SETUP SETUP C 4 RANGE TO CAL HIGH lt SET EXIT ee ol SETUP C 4 SEQ 2 ZERO SPAN 2 00 30 PREV NEXT SET EXIT _ gt EXIT returns to the PRIMARY SETUP Menu In order to automatically calibrate both the HIGH and LOW ranges you must set NOTE up a separate sequence for each 7 7 Calibration Quality After completing one of the calibration procedures described above it is important to evaluate the analyzer s calibration SLOPE and OFFSET parameters These values describe the linear response curve of the analyzer The values for these terms both individually and relative to each other indicate the quality of the calibration To perform this quality evaluation you will need to record the values of both test functions Section 6 2 1 or Appendix A 3 all of which are automatically stored in the DAS channel CALDAT for data analysis documentation and archival Make sure that these parameters are within the limits listed in Table 7 3 and frequently compare them to those values on the Final Test and Checkout Sheet that came attached to your manual which should not be significantly different If they are refer to the troubleshooting Section 11 Table 7 3 Calibration Data Quality Evaluation FUNCTION MINIMUM VALUE OPTIMUM VALUE MAXIMUM VALUE SLOPE 0 700 1 000 1 300 OFFS 0 500 0 000 0 500 trou
8. Teledyne Analytical Instruments 118 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To access and navigate the VARS menu use the following touchscreen button sequence SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP X X SECONDARY SETUP MENU COMM VARS DIAG ALRM SAMPLE ENTER SETUP PASS 818 EXIT ignores the new setting ENTR ENTR accepts the new setting SETUP X X 0 DAS_HOLD_OFF 15 0 Minutes SETUP X X 0 DAS_HOLD_OFF 15 0 Minutes NEXT JUMP EDIT PRNT EXIT ENTR EXIT SETUP X X 1 CONC_PRECUISION 3 SETUP X X 1 CONC_PRECUISION 3 PREV NEXT JUMP EDIT PRNT EXIT AUTO ENTR EXIT 3 DYN_ZERO ON Toggle each button to change setting SETUP X X 3 DYN_ZERO ON PREV NEXT JUMP EDIT PRNT EXIT ON ENTR EXIT 4 DYN_SPAN ON Toggle to change setting i PREV NEXT JUMP EDIT PRNT EXIT SETUP X X 4 DYN_SPAN ON ON ENTR EXIT Toggle to change setting SETUP X X 5 CLOCK_ADJ 0 Sec Day SETUP X X 5 CLOCK_ADJ 0 Sec Day PREV NEXT JUMP EDIT PRNT EXIT ENTR EXIT Toggle to change setting Teledyne Analytical Instruments 119 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 13 SETUP gt MORE gt DIAG Using the Diagnostics Functions A series of diagnostic tools is grouped together under the SETUP gt MORE DIAG menu As these parameters are dependent on firmware revision s
9. Teledyne Analytical Instruments 79 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 2 5 Editing DAS Parameters Data channels can be edited individually from the front panel without affecting other data channels However when editing a data channel such as during adding deleting or editing parameters all data for that particular channel will be lost because the DAS can store only data of one format number of parameter columns etc for any given channel In addition an DAS configuration can only be uploaded remotely as an entire set of channels Hence remote update of the DAS will always delete all current channels and stored data To modify add or delete a parameter follow the instruction shown in Section 6 7 2 2 then press From the DATA ACQUISITION menu see Section 6 7 2 2 Edit Data Channel Menu SETUP X X 0 CONC ATIMER 1 900 Exits to the main PREV NEXT INS DEL EDIT PRNT EXIT es SETUP X X NAME CONC lt SET SET gt EDIT PRINT Press SET gt button until SETUP X X PARAMETERS 1 lt SET SET gt EDIT PRINT YES will delete SETUP X X EDIT PARAMS DELETE DATA all data in that entire channel NO returns to the previous YES NO menu and retains all data Edit Data Parameter Menu Moves the SETUP X X 0 PARAM CONC1 MODE AVG display between Exits to the main PREV NEXT INS DEL EDIT EXIT Data Acquisition menu existing Parameters Inserts a new Param
10. OFF ENTR EXIT Toggle to turn reporting ON or OFF 6 7 2 9 Compact Report When enabled this option avoids unnecessary line breaks on all RS 232 reports Instead of reporting each parameter in one channel on a separate line up to five parameters are reported in one line 6 7 2 10 Starting Date This option allows to specify a starting date for any given channel in case the user wants to start data acquisition only after a certain time and date If the Starting Date is in the past the DAS ignores this setting Teledyne Analytical Instruments 85 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 2 11 Disabling Enabling Data Channels Data channels can be temporarily disabled which can reduce the read write wear on the disk on chip The ALL_01 channel of the GFC 7000TA for example is disabled by default To disable a data channel follow the instruction shown in Section 6 7 2 2 then press From the DATA ACQUISITION menu see Section 6 7 2 2 SETUP X X 0 CONC ATIMER 1 900 7 3 Exits to the main PRNT EXIT Data Acquisition menu PREV NEXT NS DEL EDIT SETUP XX NAME CONC lt SET SET gt EDIT PRINT Press SET gt key until 7 SETUP X X CHANNEL ENABLE ON lt SET SET gt EDIT PRINT EXIT ENTR accepts the new setting and returns to the previous menu y EXIT ignores the new setting SETUP X X CHANNEL ENABLE ON and retums to the previous
11. SETUP X X CFG DAS RNGE PASS CLK MORE SETUP X X RANGE CONTROL MENU MODE SET UNIT SETUP X X RANGE MODE SNGL EXIT Returns to the Main ENTR EXIT SAMPLE Display SNGL DUAL AUTO Only one of the range modes may Go To Section 6 7 3 Go To Section 6 7 4 Go To Section 6 7 5 be active at any time NOTE Upper span limit setting for the individual range modes are shared Resetting the span limit in one mode also resets the span limit for the corresponding range in the other modes as follows SNGL DUAL AUTO Range lt gt Rangel lt gt Low Range Range2 lt gt High Range Teledyne Analytical Instruments 91 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 8 3 Single Range Mode SNGL This is the default reporting range mode for the analyzer In single range mode both A1 and A2 are set to the same reporting range This reporting range can be any value between 50 ppm and 2 000 ppm While the two outputs always have the same reporting range the span signal offset and scaling of their electronic signals may be configured for differently e g A1 0 10 V A2 0 0 1 V See Section 6 13 4 for instructions on adjusting these parameters To select SNGL range mode and to set the upper limit of the range press SAMPLE RANGE 500 000PPM__ CO2 X XXX SETUP C3 RANGE MODE SNGL lt TST TST gt CAL SETUP SNGL DUAL AUTO EN
12. p NOTE CO MEAS and CO REF will be artificially altered to enforce a CO reading of 40 0 ppm All other Test Functions will report the correct operational value Teledyne Analytical Instruments 136 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 13 6 Dark Calibration Test The dark calibration test interrupts the signal path between the IR photo detector and the remainder of the sync demod board circuitry This allows the instrument to compensate for any voltage levels inherent in the sync demod circuitry that might effect the calculation of CO2 concentration Performing this calibration returns two offset voltages One for CO MEAS and on for CO REF that are automatically added to the CPU s calculation routine The two offset voltages from the last calibration procedure may be reviewed by the user via the front panel display To activate the dark calibration procedure or review the results of a previous calibration press SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SIGNAL O SETUP X X SECONDARY SETUP MENU ALRM COMM VARS DIAG Repeat Pressing NEXT until DIAG DARK CALIBRATION SETUP X X ENTER DIAG PASS 818 ENTR EXIT PREV NEXT ENTR EXIT DIAG DARK CO2 DARK CALIBRATION Exit returns to the VIEW CAL EXIT previous menu Calibrat
13. 6 7 2 3 Editing DAS Data Channels DAS configuration is most conveniently done through the APICOM remote control program The following list of key strokes shows how to edit using the front panel SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU EXIT will return to the previous SAMPLE CFG DAS RNGE PASS CLK MORE display Main Data Acquisition Menu SETUP X X DATA ACQUISITION VIEW EDIT SAMPLE ENTER SETUP PASS 818 Edit Data Channel Menu Moves the display up amp SETUP X X 0 CONC ATIMER 1 900 Exits to the Main INS DEL EDIT PRNT EXIT Data Acquisition Menu down the list of Data Channels PREV NEXT Exports the configuration of all data channels to RS 232 interface Inserts a new Data Channel into the list BEFORE the Channel currently being displayed ee Deletes The Data Channel currently being displayed Moves the display between the PROPERTIES for this data channel SETUP X X NAME CONC Exits returns to the previous Menu lt SETSET gt EDIT PRNT EXIT Reports the configuration of current data channels to the RS 232 ports Allows to edit the channel name see next key sequence When editing the data channels the top line of the display indicates some of the configuration parameters For example the display line 0 CONC ATIMER 4 800 translates to
14. STORE NUM OFF stores only the average default SAMPLES ON stores the average and the number of samples in each average for a parameter This property is only useful when the AVG sample mode is used Note that the number of samples is the same for all parameters in one channel and needs to be specified only for one of the parameters in that channel Users can specify up to 50 parameters per data channel the GFC 7000TA provides about 30 parameters However the number of parameters and channels is ultimately limited by available memory Teledyne Analytical Instruments 73 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 1 3 DAS Triggering Events Triggering events define when and how the DAS records a measurement of any given data channel Triggering events are firmware specific and a complete list of Triggers for this model analyzer can be found in Appendix A 5 The most commonly used triggering events are e ATIMER Sampling at regular intervals specified by an automatic timer Most trending information is usually stored at such regular intervals which can be instantaneous or averaged e EXITZR EXITSP SLPCHG exit zero exit span slope change Sampling at the end of irregularly occurring calibrations or when the response slope changes These triggering events create instantaneous data points e g for the new slope and offset concentration response values at the end of a calibration Zero and
15. In AUTO Range mode the instrument reports the same data in the same range on both the A1 and A2 outputs and automatically switches both outputs between ranges as described above Also the RANGE test function displayed on the front panel will automatically switch to show which range is in effect The high low range status is also reported through the external digital status outputs Section 6 15 1 1 To set individual ranges press the following keystroke sequence SETUP X X RANGE MODE AUTO SNGL DUAL AUTO ENTR EXIT SAMPLE RANGE 500 000 PPM CO2 X XXX SETUP lt TST TST gt CAL SETUP X RANGE CONTROL MENU EXIT x 2 returns to the main MODE SET UNIT SAMPLE display SETUPXX PRIMARY SETUP MENU gt CFG DAS RNGE PASS CLK MORE EXIT n OO SETUPXX LOW RANGE 500 0 Cone SETUP X X RANGE CONTROL MENU Toggle the numeral 0 0 0 ENTR EXIT buttons to set the LOW and HIGH MODE SET UNIT EXIT range value ENTR accepts the new setting EXIT SETUP X X RANGE MODE SNGL SETUP X X HIGH RANGE 500 0 Conc IE in TEN SNGL DUAL AUTO ENTR EXIT 0 0 5 0 0 0 ENTR EXIT CAUTION In AUTO range mode the LOW and HIGH ranges have separate slopes and offsets for computing CO2 concentration The two ranges must be independently calibrated NOTE Avoid accidentally setting the low range of the instrument with a higher span limit than the high range This will cause the unit to stay in the l
16. MESSAGE is the message content that may contain warning messages test measurements DAS reports variable values etc lt CRLF gt is a carriage return line feed pair which terminates the message The uniform nature of the output messages makes it easy for a host computer to parse them into an easy structure Keep in mind that the front panel display does not give any information on the time a message was issued hence it is useful to log such messages for trouble shooting and reference purposes Teledyne Analytical Instruments 148 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Terminal emulation programs such as HyperTerminal can capture these messages to text files for later review Teledyne Analytical Instruments 149 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 15 2 6 Remote Access by Modem The GFC 7000TA can be connected to a modem for remote access This requires a cable between the analyzer s COM port and the modem typically a DB 9F to DB 25M cable available from Teledyne Instruments with part number WRO0000024 Once the cable has been connected check to make sure the DTE DCE is in the correct position Also make sure the GFC 7000TA COM port is set for a baud rate that is compatible with the modem which needs to operate with an 8 bit word length with one stop bit The first step is to turn on the MODEM ENABLE communication mode Mode 64 Section 6 11 5 Once this i
17. SET gt EDIT EXIT DIAG AIO XIN1 OFFSET 0 00V DIAG AIO XIN1 GAIN 1 00V V lt SET SET gt EDIT 0 0 1 0 0 ENTR EXIT DIAG AIO XIN1 UNITS V Press to change lt SET SET gt EDIT Gain value DIAG AIO XIN1 DISPLAY OFF Pressing ENTR records the new setting and returns to the previous menu Pressing EXIT ignores the new setting and returns to the previous menu lt SET EDIT Teledyne Analytical Instruments 135 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 13 5 Electric Test The electric test function substitutes simulated signals for CO MEAS and CO REF generated by circuitry on the sync demod board for the output of the IR photo detector While in this mode the user can also view the same test functions viewable from the main SAMPLE display When the test is running the concentration reported on the front panel display should be 40 0 ppm SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP XX SECONDARY SETUP MENU COMM VARS DIAG ALRM SETUP X X ENTER DIAG PASS 818 8 1 8 ENTR EXIT DIAG SIGNAL I O NEXT ENTR EXIT Repeat Pressing NEXT unti p DIAG ELECTRIC TEST PREV NEXT ENTR EXIT DIAG ELEC RANGE 50 000 PPM CO2 40 0 5 Exit returns to the lt TST TST gt EXIT DIAG Menu Press lt TST TST gt to view Test Functions
18. Teledyne Analytical Instruments 11 Getting Started Model GFC7000TA Carbon Dioxide Analyzer CO2 387 499 PPM voce SAMPLE l aa Figure 3 2 Display Screen and Touch Control CAUTION Avoid Damaging Touchscreen Do not use hard surfaced instruments such as pens to operate the touchscreen The front panel liquid crystal display includes touch control Upon analyzer start up the display shows a splash screen and other initialization indicators before the main display appears similar to Figure 3 2 above may or may not display a Fault alarm The LEDs on the display screen indicate the Sample Calibration and Fault states also on the screen is the gas concentration field Conc which displays real time readouts for the primary gas and for the secondary gas if installed The display screen also shows which mode the analyzer is currently in Mode field as well as messages and data Param field Along the bottom of the screen is a row of touch control buttons only those that are currently applicable will have a label Table 3 1 provides detailed information for each component of the screen Teledyne Analytical Instruments 12 Getting Started Model GFC7000TA Carbon Dioxide Analyzer Table 3 1 Display and Touchscreen Control Description ie Description Function Status LEDs indicating the states of Sample Calibration and Fault as follows Off Unit is not operating in sample mode DAS is disabl
19. DIAG I O 28 SAMPLE_PRESSURE 2540 MV 22 ON ON PRNT EXIT PREV PRNT EXIT PREV NEXT JUMP JUMP Toggles parameter ON OFF DIAG I O 22 PREV NEXT JUMP OFF PRNT EXIT Exit retums to DIAG display amp all values return to software control gt Figure 10 2 Example of Signal I O Function 10 1 4 Internal Electronic Status LEDs Several LED s are located inside the instrument to assist in determining if the analyzer s CPU I C bus and relay board GFC wheel and the sync demodulator board are functioning properly 10 1 4 1 CPU Status Indicator DS5 a red LED that is located on upper portion of the motherboard just to the right of the CPU board flashes when the CPU is running the main program loop After power up approximately 30 to 60 Teledyne Analytical Instruments 224 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer seconds DS5 should flash on and off If characters are written to the front panel display but DS5 does not flash then the program files have become corrupted If after 30 60 seconds neither the DS5 is flashing or no characters have been written to the front panel display then the CPU is bad and must be replaced CPU Status LED Figure 10 3 CPU Status Indicator 10 1 4 2 Sync Demodulator Status LED s Two LEDs located on the Sync Demod Board and are there to make it obvious that the GFC Wheel is spinning and the synchronization
20. ccccccccceececeeeeeeeeeceeaeaeeeeeeeeesenaeeeeeeeeesenecnieeeeeeeeeees 173 Calibration Data Quality Evaluation 0 cece einer ie erties ee reee erties ee neeeesneeeeseneeeene 176 GFC 7000TA Maintenance Schedule cceceeceeeeee entree erties ee ecneeeeeeteeeeetieeeeetiieeeeesieeeeesieeeee 181 GFC 7000TA Test Function Record sessiensisiesanra darnieri ania ENE NEA SEA EAEAN 182 Predictive uses for Test FUnCtiOnS 0 040 0iebe di deiidede dade dicho daaed sled ingvee aaieinandin 183 Sync Demod Status LED ACtiVity ec eeeeeeeeeeeeee taaa Arrin nr AEE ANNAE E ania aa TE i 204 Relay Board Status LED S inrsin ec tarai ANALE nie adh ide bees 206 Warning Messages Indicated Failures ccccceecseeeeeeeeeeeeceeeeeeeeeeeeeeeeeneeeeeseneaeeeseeeeaeeseeaeeeteeaaees 220 Test Functions Indicated Failures 0 c ec cececceeeceeneeeeeeeeeeeeeeeeeeeeseneaeeeeseneeeeeseneaeeeseneaeeeseeeaeeeeeeaaees 222 Sync Demod Board Status Failure Indications cece ee eeteee eee eee eetneeeeeeeeeeetineeeeetneeeee 225 I2C Status LED Failure Indications ec cccceeeeeeeeeee cece eee ee eeeaeeeeeeaeeeeeeaeeeseeaeeeseenaeeeeeeneeeeneaas 226 Relay Board Status LED Failure Indications 20 0 0 eccceeeeeeeeeeeenneeeeeeeeeeeeeaeeeeeeaeeeeeenaeeeeenneeeeeeaas 227 DC Power Test Point and Wiring Color CodeS eeeeccceeeeeneeeeeeeneeeeeeenieeeeeeneeeseeaeeeeesnaeeeeenneeeeseaas 241 DC Power Supply Acceptable Levels 0 cccc
21. lt SET SET gt EDIT EXIT Toggle this SETUP X X DHCP ON button to turn N EXIT DHCP ON 2 ENIR OFF SETUP X X DHCP OFF ENTR accepts OFF ENTR EXIT the new setting Ooo EXIT ignores the new setting Da Continue to the next step below Teledyne Analytical Instruments 111 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Next refer to Table 6 12 for the default Ethernet configuration settings and configure the INSTRUMENT IP addresses by pressing from preceding step INTERNET CONFIGURATIN KEYPAD FUNCTIONS BUTTON FUNCTION SETUP X X DHCP OFF A Press this u o nto cycle through the range of lt SET SET gt EDIT EXIT 0 numerals and available characters 09 amp lt CH CH gt Moves the cursor one character left or right DEL Deletes a character at the cursor location ENTR Accepts the new setting and returns to the previous SETUP X X INST IP 000 000 000 000 menu lt SET SET gt EDIT EXIT EXIT Ignores the new setting and returns to the previous Some buttons only appear as needed Input the new setting SETUP X X INST IP 0 00 000 000 000 lt CH CH gt DEL 7 ENTR EXIT ENTR accepts the new setting EXIT ignores the SETUP X X INST IP 000 000 000 000 new setting a lt SET SET gt EDIT EXIT SETUP X X GATEWAY IP 000 000 000 000 lt SET SET gt EDIT EXIT Input the new setting SETUP X X GATEWAY IP 0 00 000 000 000 E lt CH CH gt DEL 7 ENTR EXIT ENTR accepts the new s
22. 6 13 1 Accessing the Diagnostic F at reS iieiea iiie aaa e a oeaiei ee ia iea eiaeia iani 121 6 13 2 Sigrial Osc ops ache tastes sun edessssacds oborescteshes tenbaghs Gpeapecs cds o eneectushia de Gadascaseensgreatoeesaatasterts 121 6 13 3 Analog Output Step TESt rreri iet enee aa tiete aaea Eae aa Eae Ee ae EAE eaa E aa a ie iets 122 6 13 4 Analog I O Configuration ssis aii aa a adiis 123 0 13 95 Eleciie TES r r a T A sca E aE a a a eTa rA E aa A E AE EE aT na 136 6 13 6 D rk Calibration Testisi iia a e a R a a EE aA 137 6 13 7 Pressure Callilbration arre ae e a a e eE aa aae aa ae a aE e ea T raae aA e aee aiae E eean oea ia earna 138 6 13 8 Flow Calibration s c0 c c cece escent eis eee ae eee eee eset r ey a a E 139 6 13 9 Test Channel Output ssccccsccecdevececsles ooh so oevedshevvens r aae T AE e e aTi a 140 6 14 SETUP gt MORE gt ALRM Using the Gas Concentration AlarmS eeeeeeeeirrrrreerrireerirreersereen 141 6 14 1 Setting the Concentration Alarm Limits ccccccceceeseeceeeeeeeeeeeae cece eeeesenaaeaeeeeeeesecaeaeeeeeeseeaeeeeeeeeeeeeea 142 6 15 Remote Operation of the Analyzer oo ee eeeeseeeeeeeeeeenneeeeeeaeeeceeeeeeeeaeeeseeeaaeeeseeeeeeesneeeeeeaeeseeeeeeesneeeeneaaes 142 6 15 1 Remote Operation Using the External Digital VO ee ee eeneeeeenneeeeeeeeeeeenaeeeseeaeeeseeeeeeeenaeeeenenaes 142 6 15 2 Remote Operation Using the External Serial 1 0 eee eecceeeesneeeeeenneeeeeeneeeeesaeeeeeenaeeesnneee
23. AREA OF AREA OF LOW HIGH PRESSURE PRESSURE 1 hi Sonic Shockwave SPRING O RINGS FILTER Figure 9 8 Flow Control Assembly amp Critical Flow Orifice The actual flow rate of gas through the orifice volume of gas per unit of time depends on the size and shape of the aperture in the orifice The larger the hole the more gas molecules moving at the speed of sound pass through the orifice Because the flow rate of gas through the orifice is only related to the minimum 2 1 pressure differential and not absolute pressure the flow rate of the gas is also unaffected by degradations in pump efficiency due to age The critical flow orifice used in the Model GFC 7000TA is designed to provide a flow rate of 800 cm min Teledyne Analytical Instruments 195 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 2 3 Purge Gas Pressure Control In order to ensure that all of the ambient COz is purged from the GFC Wheel housing an adequate supply of dried air scrubbed of CO must be supplied to the PURGE AIR inlet at the back of the instrument e The minimum gas pressure of the source of purge air should be 7 5 psig e If the source of the purge air is shared by a Teledyne TAI s T700 as shown in figure 3 7 the minimum gas pressure should be 25 psig and should not exceed 35 psig In order to maintain the proper pressure differential between the inside of the GFC wheel housing and ambient air the GFC 7000T
24. Check to make sure the set up command is correct See Section 6 13 2 7 Verify that the Ready to Send RTS signal is at logic high The GFC 7000TA sets pin 7 RTS to greater than 3 volts to enable modem transmission Make sure the BAUD rate word length and stop bit settings between modem and analyzer match See Section 6 10 7 Use the RS 232 test function to send w characters to the modem terminal or computer See Section 6 10 8 Get your terminal modem or computer to transmit data to the analyzer holding down the space bar is one way the green LED should flicker as the instrument is receiving data Make sure that the communications software or terminal emulation software is functioning properly Further help with serial communications is available in a separate manual RS 232 Programming Notes Teledyne Instruments part number 013500000 Teledyne Analytical Instruments 250 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 6 Repair Procedures This contains procedures that might need to be performed on rare occasions when a major component of the analyzer requires repair or replacement 10 6 1 Repairing Sample Flow Control Assembly The critical flow orifice is housed in the flow control assembly Teledyne Instruments part number 001760400 located on the top of the optical bench A sintered filter protects the jewel orifice so it is unusual for the orifice to need replacing but if it does or
25. Failed bench temperature sensor Relay controlling the bench heater Failed relay board IC bus SOURCE Occurs when CO2 Ref is lt 1250 GFC wheel stopped WARNING mVDC or gt 4950 mVDC Failed sync demod board If status LED s on the sync demod board ARE flashing the Either of these conditions will result cause is most likely a failed in an invalid M R ratio IR source Relay board C bus IR photo detector SYSTEM RESET The computer has rebooted This message occurs at power on If you have not cycled the power on your instrument o Failed 5 VDC power o Fatal error caused software to restart o Loose connector wiring WHEEL TEMP The filter wheel temperature is Blocked cooling vents below GFC Assembly Make sure that WARNING controlled at 68 2 C adequate clear space beneath the analyzer Analyzer s top cover removed Wheel heater Wheel temperature sensor Relay controlling the wheel heater Entire relay board C bus FAULT CONDITION POSSIBLE CAUSES 10 1 2 Fault Diagnosis with TEST Functions Besides being useful as predictive diagnostic tools the test functions viewable from the front panel can be used to isolate and identify many operational problems when combined with a thorough understanding of the analyzer s theory of operation see Section 10 The acceptable ranges for these test functions are listed in the Nominal Range column of the analyzer Final Test and Validation Data Sheet p n 04307 shipped w
26. LIST of available parameters STARTING The starting date when a channel starts collecting 01 JAN 03 Any actual date in the past DATE data or future SAMPLE The amount of time between each data point that is 000 01 00 000 00 01 to 366 23 59 PERIOD averaged into one mean reported every REPORT Days Hours Minutes PERIOD REPORT The amount of time between each channel data 000 01 00 000 00 01 to PERIOD point 366 23 59 Days Hours Minutes NUMBER OF The number of reports that will be stored in the data 1 to 1 million limited by RECORDS file Once the specified limit has been exceeded available storage space the oldest data are over written to make space for OFF or ON RS 232 Enables the analyzer to automatically report channel OFF REPORT values to the RS 232 ports CHANNEL Enables or disables the channel Provides a OFF or ON ENABLED convenient means to temporarily disable a data channel CAL HOLD OFF Disables sampling of data parameters while OFF or ON instrument is in calibration mode Section 6 7 2 11 When enabled here there is also a length of the DAS HOLD OFF after calibration mode which is set in the VARS menu Teledyne Analytical Instruments 72 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 1 2 DAS Parameters Data parameters are types of data that may be measured and stored by the DAS For each Teledyne Instruments analyzer model the list of available data parameters is diff
27. Potentially damaging electro static discharges can occur e Anytime a charged surface including the human body discharges to a device Even simple contact of a finger to the leads of a sensitive device or assembly can allow enough discharge to cause damage A similar discharge can occur from a charged conductive object such as a metallic tool or fixture e When static charges accumulated on a sensitive device discharges from the device to another surface such as packaging materials work surfaces machine surfaces or other device In some cases charged device discharges can be the most destructive A typical example of this is the simple act of installing an electronic assembly into the connector or wiring harness of the equipment in which it is to function If the assembly is carrying a static charge as it is connected to ground a discharge will occur Teledyne Analytical Instruments 256 ESD Model GFC7000TA Carbon Dioxide Analyzer e Whenever a sensitive device is moved into the field of an existing electro static field a charge may be induced on the device in effect discharging the field onto the device If the device is then momentarily grounded while within the electrostatic field or removed from the region of the electrostatic field and grounded somewhere else a second discharge will occur as the charge is transferred from the device to ground 11 3 Common Myths About ESD Damage e didn t feel a shock so there was no
28. Toggle to turn menu channel ON or OFF OFF ENTR EXIT gt Teledyne Analytical Instruments 86 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 2 12 HOLDOFF Feature The DAS HOLDOFF feature allows to prevent data collection during calibrations and during the DAS_HOLDOFF period enabled and specified in the VARS Section 6 12 To enable or disable the HOLDOFF follow the instruction shown in Section 6 7 2 2 then press From the DATA ACQUISITION menu see Section 6 7 2 2 Edit Data Channel Menu SETUP X X 0 CONC ATIMER 1 900 Exits to the main Data Acquisition menu PREV NEXT NS DEL EDIT PRNT EXIT SETUP X X NAME CONC lt SET SET gt EDIT PRINT Press SET gt key until SETUP X X CAL HOLD OFF ON SET gt EDIT PRINT EXIT ENTR accepts the new setting and returns to the previous menu SETUP X X CAL HOLD OFF ON EXIT ignores the new setting and returns to the previous ON ENTR EXIT Toggle to turn HOLDOFF ON or OFF Teledyne Analytical Instruments 87 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 3 Remote DAS Configuration Editing channels parameters and triggering events as described in this can be performed via the APICOM remote control program using the graphic interface shown in Figure 6 5 Refer to Section 6 15 for details on remote access to the GFC 7000TA analyzer
29. Using Bottled Span Gas Teledyne Analytical Instruments 162 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Source of SAMPLE GAS Calibrated CO Gas at 100x span gas concentration Removed during calibration Model T700 gas Dilution Calibrator SAMPLE lt f Exhaust VENT SPAN I IzS PURGE LINE PRESSURE SPAN VENT here if input is pressurized gt Chassis Figure 7 2 STEP TWO Set the expected CO Span Gas concentration CO2 X XXX PLE RANGE 500 000 PPM TST TST gt CAL SETUP P CAL RANGE 500 00 PPM CO2 X XXX TST TST gt ZERO EXIT The CO span concentration values automatically default to 400 0 Conc M P CAL CO2 SPAN CONC 400 000 Conc To change this value to the actual concentration of the span gas enter the number by pressing the button under each digit until the expected value appears ENTR EXIT Pneumatic Connections Basic Configuration Using Gas Dilution Calibrator This sequence causes the analyzer to prompt for the expected CO span concentration EXIT ignores the new setting and returns to the previous display ENTR accepts the new setting and returns to the previous display NOTE Value of the SPAN gas For this Initial Calibration it is important to independently verify the PRECISE CO Concentration If the source of the Span Gas is from
30. analyzers monitors calibrators etc into one communications hub Contact Teledyne Instruments sales for more information on CAS systems 6 11 1 Analyzer ID Each type of Teledyne Instruments analyzer is configured with a default ID code The default ID code for all GFC 7000TA analyzers is 360 The ID number is only important if more than one analyzer is connected to the same communications channel such as when several analyzers are on the same Ethernet LAN See Section 6 11 6 in a RS 232 multidrop chain See Section 6 11 7 or operating over a RS 485 network If two analyzers of the same model type are used on one channel the ID codes of one or both of the instruments needs to be changed To edit the instrument s ID code press SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU SETUP X X COMMUNICATIONS MENU CFG DAS RNGE PASS CLK MORE EXIT Toggle these keys to cycle through the available character set 0 9 ENTR accepts the new SETUP X MACHINE ID 360 ID settings EXIT ignores the new ENTR EXIT settings The ID number is only important if more than one analyzer is connected to the same communications channel e g a multi drop setup Different models of Teledyne Instruments analyzers have different default ID numbers but if two analyzers of the same model type are used on one channel for example two GFC 7000TA s
31. the COMM VARS DIAG EXIT SETUP menu SETUP X X ENTER DIAG PASS 818 ENTR EXIT SIGNAL I O Adjust these values until the displayed flow rate equals the flow rate being measured by the Repeat Pressing NEXT until ind pendent flow meter DIAG FLOW CALIBRATION Exit returns to the ENTR EXIT previous menu PREV NEXT DIAG FCAL ACTUAL FLOW 654 CC M ENTR EXIT ENTR accepts the new value and returns to the previous menu EXIT ignores the new value and returns to the previous menu Teledyne Analytical Instruments 139 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 13 9 Test Channel Output When activated output channel A4 can be used to report one of the test functions viewable from the SAMPLE mode display To activate the A4 channel and select a test function follow this button sequence SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL ETUP SETUP X X PRIMARY SETUP MENU Continue to press NEXT until D CFG DAS RNGE PASS CLK MORE EXIT SETUP X X SECONDARY SETUP MENU DIAG TEST CHAN OUTPUT IM VARS COMM VARS DIAG FAIT PREV NEXT ENTR EXIT SETUP X X ENTER DIAG PASS 818 DIAG TCHN TEST CHANNEL NONE 8 1 8 ENTR EXIT p NEXT ENTR EXIT DIAG SIGNAL I O HEX RTE EME DIAG TCHN TEST CHANNEL CO2 MEASURE PREV NEXT ENTR EXIT DIAG ANALOG OUTPUT PREV NEXT ENT
32. 00 30 lt SET SET gt EDIT EXIT SETUPX X SEQ 2 ZERO SPAN 1 00 00 t PREV NEXT MODE SET EXIT SETUP X X DURATION 15 0 MINUTES e Toggle lt SET SET gt EDIT EXIT Default SETUP X X TIMER ENABLE ON fi mele te value is 4 ON SET gt EDIT EXIT duration for SETUP X X DURATION 15 0MINUTES iteration of the SETUP X X STARTING DATE 01 JAN 02 ee eer EMR EML ea Decimal lt SET SET gt EDIT EXIT minutes SETUP X X DURATION 30 0 MINUTES from Toggle 0 1 60 0 buttons to set lt SET SET gt EDIT EXIT day month amp SETUP X X STARTING DATE 01 JAN 02 gt Years 0 4 SEP 0 3 ENTR EXIT Format DD MON YY SETUP X X CALIBRATE OFF SETUP X X STARTING DATE 04 SEP 03 CSET SET AEDI ET lt SET SET gt EDIT EXIT Toggle SETUP X X CALIBRATE OFF button SETUPX X STARTING DATE 04 SEP 03 p between ON ENTR EXIT ne lt SET SET gt EDIT EXIT es Toggle buttons t SETUP X X CALIBRATE ON to set time SETUP X X STARTING TIME 00 00 Format HH MM lt SET SET gt EDIT EXIT This is a 24 hr lt SET SET gt EDIT EXIT clock Pareu are SETUPXX SEQ 2 ZERO SPAN 2 00 30 13 24 p 3 2 00 EXIT retums Example SETUPX X STARTING TIME 00 00 to the SETUP 14 PREV NEXT SET EXIT Menu eto NR te 1 4 1 5 ENTR EXIT Sequence Delta Time MODE Delta Days Teledyne Analytical Instruments 175 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer 7 6 1 AutoCal with Auto or Dual Reporting Ranges Modes Selected
33. 11 Ethernet Status Indicators oe eeee ee eeeeeee eee eenne ee eeee ater eeeaaeeeeeeaaeeeeeeaeeeeeeaeeeeeeeeeeeeeenaeeeseeneeeeeeaas 108 Table 6 12 LAN Internet Configuration Properties ec cencceeeeeeeeeeenneeeeeeaaeeeeeeaeeeeeeaeeeeeenaeeeeeeiaeeeeeenaneeeeeaas 109 Table 6 13 Internet Configuration Touchscreen FUNCTIONS 0 cccceeeeeeeeeeeneeeeeeeneeeeetaeeeeeeeaeeeeeenaeeeeeenneeeneaes 113 Teledyne Analytical Instruments xvi Table of Contents Model GFC7000TA Carbon Dioxide Analyzer Table 6 14 Table 6 15 Table 6 16 Table 6 17 Table 6 18 Table 6 19 Table 6 20 Table 6 21 Table 6 22 Table 6 23 Table 6 24 Table 6 25 Table 6 26 Table 6 27 Table 6 28 Table 6 29 Table 6 30 Table 6 31 Table 7 1 Table 7 2 Table 7 3 Table 8 1 Table 8 2 Table 8 3 Table 9 1 Table 9 2 Table 10 1 Table 10 2 Table 10 3 Table 10 4 Table 10 5 Table 10 6 Table 10 7 Table 10 8 Table 10 9 Table 10 10 Table 10 11 Table 10 12 Table 11 1 Table 11 2 Variable Names VARS Revision B 3 0 cc cceeeeeeeeeeeeeeeeeene eee eeeaeeeeeeaaeeeseeaeeeeeenaeeeeseeiaeeseeneeeeneaas 118 GFC 7000TA Diagnostic DIAG FUNCTIONS cee ee tteee teeter ee te eter eieee ee tieeeee seer enneeeeee 120 DIAG Analog JO sFUNnCUONS ernari tists dee erin deinen dee eee ee a 123 Analog Output Voltage Ranges 2 ci lesetesecqeecseredaeteseceaeeveeccesenetadaedeseccessusezadeenssenadedeendsevenectestveess 124 Ana
34. 13 Figure 3 14 Figure 3 15 Figure 3 16 Figure 5 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 5 5 Figure 5 6 Figure 6 1 Figure 6 2 Figure 6 3 Figure 6 4 Figure 6 5 Figure 6 6 Figure 6 7 Figure 6 8 Figure 6 9 Figure 6 10 Figure 6 11 Figure 6 12 Figure 6 13 Figure 6 14 Figure 6 15 Figure 7 1 Figure 7 2 Figure 7 3 Figure 7 4 Figure 7 5 Figure 7 6 Figure 8 1 Figure 9 1 Figure 9 2 Figure 9 3 Figure 9 4 Figure 9 5 Front Panel Layouts omrinne angheet ingecehinhedeeissagecl sabes siabeades camaedchsnieddelvindcen semen etedeeeivnns 11 Display Screen and Touch Control cccececeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeseenaeeeseeaees 12 Display Touch Control Screen Mapped to Menu Charts ececcececceeeeeeeeeeeecaeeeeeeeeeteenneaeeees 14 Rear Panel Layouts cescdicetiee cai dices aneo aa Nia NES ARANAN AE EA AENA AANA NAAA EA ENAA EEEE 15 Internal Chassis Layout ciiciecadecceveaideceivescdeee iadeccuvadececvelageadhvagedeccevndecesvensedcehendeadeheuaeeceense 17 Optical Bench Layout oeoo eines sl ined evade cosine ce eeulddesel sideaves ane NKEA AAA dee avons stag 18 GFC ZO00TA Internal Gas FOW iseni ea e aaae aaas tt a aE EEA 19 Analog IM COMMO COR eeii n tiaina iE i a A EAE i ONEA A Ees ra aea i aA 20 Pneumatic Connections Basic Configuration Using Bottled Span Gas eeeeeeeeeeeeee 27 Pneumatic Connections Basic Configuration
35. 3 Calibrate per Analog I O Configuration menu CPU Current Loop option 9 installed on J21 Example setup install jumper shunts for voltage output on J19 and J23 remove jumper shunts and install Current Loop option for current output on J21 Figure 5 1 Current Loop Option Installed on the Motherboard 5 2 1 Converting Current Loop Analog Outputs to Standard Voltage Outputs NOTE Servicing or handling of circuit components requires electrostatic discharge protection i e ESD grounding straps mats and containers Failure to use ESD protection when working with electronic assemblies will void the instrument warranty See Section 12 for more information on preventing ESD damage To convert an output configured for current loop operation to the standard 0 to 5 VDC output operation 1 Turn off power to the analyzer 2 Ifa recording device was connected to the output being modified disconnect it 3 Remove the top cover Teledyne Analytical Instruments 52 FAQ Model GFC7000TA Carbon Dioxide Analyzer e Remove the set screw located in the top center of the rear panel e Remove the screws fastening the top cover to the unit four per side e Slide the cover back and lift straight up 4 Disconnect the current loop option PCA from the appropriate connector on the motherboard see Figure 5 1 Place a shunt between the leftmost two pins of the connector see Figure 5 1 Reattach the top case to th
36. 3 Viewing and Clearing GFC 7000TA WARNING Messages 6 3 Calibration Mode Pressing the CAL key switches the GFC 7000TA into multi point calibration mode In this mode the user can calibrate the instrument or check the instruments calibration with the use of calibrated zero or span gases If the instrument includes either the zero span valve option or IZS option the display will also include CALZ and CALS keys Pressing either of these keys also puts the instrument into multipoint calibration mode e The CALZ key is used to initiate a calibration of the zero point e The CALS key is used to calibrate the span point of the analyzer It is recommended that this span calibration is performed at 90 of full scale of the analyzer s currently selected reporting range Because of their critical importance and complexity calibration operations are described in detail in Section 7 of this manual For more information concerning the zero span zero span and IZS valve options See Section 5 4 Teledyne Analytical Instruments 68 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 4 SETUP MODE The SETUP mode contains a variety of choices that are used to configure the analyzer s hardware and software features perform diagnostic procedures gather information on the instruments performance and configure or access data from the internal data acquisition system DAS For a visual representation of the software menu t
37. Analytical Instruments 31 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 6 3 Pneumatic Connections in Multipoint Calibration Applications Some applications may require multipoint calibration checks where span gas of several different concentrations is needed We recommend using high concentration certified calibration gas supplied to the analyzer through a Gas Dilution Calibrator such as a Teledyne Instruments Model T700 This type of calibrator precisely mixes Span Gas and Zero Air to produce any concentration level between 0 ppm and the concentration of the calibrated gas Figure 3 12 depicts the pneumatic set up in this sort of application of a Model GFC 7000TA CO Analyzer with ambient zero ambient span valve option 50A installed a common configuration for this type of application Source of VENT here if input SAMPLE GAS is pressurized Removed during calibration Calibrated CO Gas Model T700 gas at 100x span gas Dilution concentration Calibrator SAMPLE EXHAUST Gas Pressure VENT SPAN Should be Chassis Regulated at PRESSURE SPAN 30 35psig ps External Zero Air Scrubber IZS PURGE LINE Figure 3 15 Example of Pneumatic Set up for Multipoint Calibration 3 6 4 Setting the Internal Purge Air Pressure In order to maintain proper purge air flow though the GFC wheel housing a manually adjustable pressure regulator is provided see Figure 3 5 This regulator includes two output p
38. Analyzer Protective Mat D ree Ground Point Figure 11 2 Basic anti ESD Work Station For technicians that work in the field special lightweight and portable anti ESD kits are available from most suppliers of ESD protection gear These include everything needed to create a temporary anti ESD work area anywhere e Always wear an Anti ESD wrist strap when working on the electronic assemblies of your analyzer An anti ESD wrist strap keeps the person wearing it at or near the same potential as other grounded objects in the work area and allows static charges to dissipate before they can build to dangerous levels Anti ESD wrist straps terminated with alligator clips are available for use in work areas where there is no available grounded plug Also anti ESD wrist straps include a current limiting resistor usually around one meg ohm that protects you should you accidentally short yourself to the instrument s power supply e Simply touching a grounded piece of metal is insufficient While this may temporarily bleed off static charges present at the time once you stop touching the grounded metal new static charges will immediately begin to re build In some conditions a charge large enough to damage a component can rebuild in just a few seconds e Always store sensitive components and assemblies in anti ESD storage bags or bins Even when you are not working on them store all devices and assemblies in a
39. CALZ CALS SETUP This sequence causes the analyzer to prompt for the expected CO span concentration M P CAL RANGE 500 00 PPM CO2 X XXX lt TST TST gt ZERO EXIT The CO span concentration values automatically default to 400 0 Cone EXIT ignores the new setting M P CAL CO2 SPAN CONC 450 000 Conc and returns to the previous To change this value to f the actual concentration of display the span gas enterthe 0 ENTR EXIT ENTR accepts the new setting number by pressing the and returns to the button under each digit previous display until the expected value appears NOTE For this Initial Calibration it is important to independently verify the PRECISE CO Concentration Value of the SPAN gas If the source of the Span Gas is from a Calibrated Bottle use the exact concentration value printed on the bottle STEP THREE Perform the zero span calibration Zero and span checks using the zero span valve option are similar to that described in Section 7 2 except that zero air and span gas is supplied to the analyzer through the zero span valves rather than through the sample inlet port The zero and cal operations are initiated directly and independently with dedicated buttons CALZ amp CALS Teledyne Analytical Instruments 169 Calibration Procedures The SPAN button now appears during the transition from zero to span If either the ZERO or SPAN buttons fail to appear see Section 11 for troublesho
40. CONC_OUT_2 RANGE 5V Ke Snal g menu EXIT ignores the new output channel setting and returns to the SET gt only previous menu Now the analog output channels should either be automatically calibrated or they should be set to manual calibration which is described next 6 13 4 3 Manual Analog Output Calibration and Voltage Adjustment For highest accuracy the voltages of the analog outputs can be manually calibrated Calibration is done through the instrument software with a voltmeter connected across the output terminals Figure 6 15 Adjustments are made using the touchscreen buttons by setting the zero point first and then the span point Table 6 20 The software allows this adjustment to be made in 100 10 or 1 count increments Table 6 20 Voltage Tolerances for Analog Output Calibration NOTE Outputs configured for 0 1V full scale should always be calibrated manually Teledyne Analytical Instruments 129 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Ey K A e See Table 3 1 for pin assignments v of Analog Out connector on the rear panel Recording ANALYZER Device Figure 6 11 Setup for Calibrating Analog Voltage Outputs To make these adjustments the AOUT auto calibration feature must be turned off Section 6 13 4 2 Activate the ANALOG I O CONFIGURATION MENU See Section 6 13 1 then press Teledyne Analytical Instruments 13
41. DB9 connectors on the analyzer s back panel are needed to construct the multidrop chain COM2 is no longer available for separate RS 232 or RS 485 operation however the USB com port is available Multi drop LVDS board Figure 6 9 Multidrop LVDS PCA Seated on CPU Each analyzer in the multidrop chain must have e One Teledyne Instruments option 62 installed e One 6 straight through DB9 male gt DB9 Female cable Teledyne Instruments P N WRO0000101 is required for each analyzer To set up the network for each analyzer 1 With NO power to the instrument open the rear panel and locate the CPU 2 Onthe LVDS card disconnect the cable that s connected to J1 and remove the LVDS card from the CPU card 3 Mount the Multidrop LVDS card onto the CPU and reconnect the LVDS cable to J1 Teledyne Analytical Instruments 114 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 4 Connect a cable between the Multidrop LVDS card J4 and the motherboard P12 5 Connect a cable between the Multidrop LVDS card J3 and the CPU COM1 connector 6 Close the instrument 7 Using straight through DB9 male gt DB9 Female cable interconnect the host and the analyzers as shown in Figure 6 14 8 BEFORE communicating from the host power on the instruments and check that the Machine ID code is unique for each see Section Analyzer ID On the front panel menu use SETUP gt MORE gt COMMS gt ID Note that the default ID i
42. Demodulator 03632 A PCA 03631 0 20mA driver 04003 N PCA 04003 Pressure Flow Transducer Interface 04089 A PCA 04088 Opto Pickup Interface 04136 B PCA 04135 Rev A Relay 04468 B PCA 04467 Analog Output Series Res 05803 B SCH PCA 05802 MOTHERBOARD GEN 5 06698 D SCH PCA 06697 INTRFC LCD TCH SCRN 06882 B SCH LVDS TRANSMITTER BOARD 06731 A SCH AUXILLIARY I O BOARD NOTE Please read this manual in its entirety before operating the instrument Teledyne Analytical Instruments Manual Information Model GFC7000TA Carbon Dioxide Analyzer This page intentionally left blank Teledyne Analytical Instruments Table of Contents Model GFC7000TA Carbon Dioxide Analyzer TABLE OF CONTENTS SAFETY MESSAGES viritati a conch aap hoewu aa aar cet bekt bpdebe aaa apean Aaen rakter NTE Ei v CONSIGNES D S C UR T e r tans oe a ced tas E Laat Ee aaaea a sith ed E Aeee EEE ee he Sagas vi ABOUT this MANUAL viren ioiii ietie i atei eaae iaia uee da Nerdee edadia di aaa deaa ix TABLE ORF CONTENT O wpe ois T aE be ee aa ee holga aM pled oh aA a a alle aaa E oR xi Te INTRODUCTION aaeeei sonat checks Hace cccete gic ceietcevecdennet Sia cecanugesaueadueeecteue ars sonhado centadencse chads codugdentstdvare dedsuaeveutevucuesecltetndies 1 TeV FOATUCES E cute tyes cosets ccna E E at ba ybauceeita seventy E E E E te aSbadte adh uotenaventeass 1 1 2 Using This Manual tecc sccs eects eae cae seed
43. Department of the most commonly asked questions relating to the Model CO Analyzer Q How do get the instrument to zero Why is the zero key not displayed A See Section 11 3 4 Inability to zero Q How do get the instrument to span Why is the span key not displayed A See Section 11 3 3 Inability to span Q Why does the ENTR key sometimes disappear on the Front Panel Display A During certain types of adjustments or configuration operations the ENTR key will disappear if you select a setting that is nonsensical such as trying to set the 24 hour clock to 25 00 00 or out of the allowable range for that parameter such as selecting a DAS Holdoff period of more than 20 minutes Once you adjust the setting in question to an allowable value the ENTR key will re appear Q Is there an optional midpoint calibration A There is an optional mid point linearity adjustment however midpoint adjustment is applicable only to applications where CO measurements are expected above 100 ppm Call Teledyne Instruments Service Department for more information on this topic Q How do I make the display and data logger analog input agree A This most commonly occurs when an independent metering device is used besides the data logger recorded to determine gas concentration levels while calibrating the analyzer These disagreements result from the analyzer the metering device and the data logger having slightly different ground levels Both the
44. Dioxide Analyzer Sample Gas Outlet Sample Gas Flow fitting Sensor ae QD Sample Chamber X E Sync Demod PCA Housing Pressure Sensor s Bench Temperature Thermistor Shock Absorbing Mounting Bracket Opto Pickup PCA Purge Gas Pressure Regulator IR Source Heat Sync m GFC Wheel Motor GFC Temperature Sensor Purge Gas Inlet GFC Heater Figure 3 6 Optical Bench Layout Teledyne Analytical Instruments 18 Getting Started Model GFC7000TA Carbon Dioxide Analyzer SAMPLE GAS INLET 3 ge l oc lt 2 e l Lu g Os a ome L Lr ot EXHAUST lt z GAS OUTLET O uj l Oo An 2 ani l SE SAMPLE 5 Flow Pressure PA ORE ae Sensor PCA SENSOR P gt 0 l S 03 FLOW l SENSOR l l l Sample Gas m Flow Control PURGE GAS INLET l a 1 Purge Gas Pressure Control Figure 3 7 GFC 7000TA Internal Gas Flow 3 5 Electrical Connections WARNING Never disconnect PCAs wiring harnesses or electronic subassemblies while the instrument is under power NOTE To maintain compliance with EMC standards it is required that the cable length be no greater than 3 meters for all I O connections which include Analog In Analog Out Status Out Control In Eth
45. Gate J Logic Device Reference Gate M R Sensor Phase Lock Warning Segment Sensor eae l Segment Clock E Test Control X1 Reference ey VZ VZ i 10 Dark Switch A O a X10 Clock Segment M R Phase Lock Status LED Status LED Figure 9 13 GFC 7000TA Sync Demod Block Diagram 9 3 4 2 Signal Synchronization and Demodulation The signal emitted by the IR photo detector goes through several stages of amplification before it can be accurately demodulated The first is a pre amplification stage that raises the signal to levels readable by the rest of the synch demod board circuitry The second is a variable amplification stage that is adjusted at the factory to compensate for performance variations of mirrors detectors and other components of the optical bench from instrument to instrument The workhorses of the sync demod board are the four sample and hold circuits that capture various voltage levels found in the amplified detector signal needed to determine the value of CO2 MEAS and CO2 REF They are activated by logic signals under the control of a compact programmable logic device PLD which in turn responds to the output of the Segment Sensor and M R Sensor described in Figure 10 11 Teledyne Analytical Instruments 203 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer The four sample and hold circuits are DESIGNATION ACTIVE WHEN SEGMENT SENSOR PULSE IS Measure Gate HIGH Mea
46. General RS 232 Troubleshooting Teledyne Instruments analyzers use the RS 232 communications protocol to allow the instrument to be connected to a variety of computer based equipment RS 232 has been used for many years and as equipment has become more advanced connections between various types of hardware have become increasingly difficult Generally every manufacturer observes the signal and timing requirements of the protocol very carefully Problems with RS 232 connections usually center around 4 general areas 1 Incorrect cabling and connectors See Section 6 11 2 for connector and pin out information 2 The BAUD rate and protocol are incorrectly configured See Section 6 10 7 3 Ifa modem is being used additional configuration and wiring rules must be observed See Section 6 13 2 6 4 Incorrect setting of the DTE DCE Switch is set correctly See Section 6 10 5 5 Verify that cable 03596 that connects the serial COM ports of the CPU to J12 of the motherboard is properly seated Teledyne Analytical Instruments 249 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 5 10 2 Troubleshooting Analyzer Modem or Terminal Operation These are the general steps for troubleshooting problems with a modem connected to a Teledyne Instruments analyzer 1 2 Check cables for proper connection to the modem terminal or computer Check to make sure the DTE DCE is in the correct position as described in Section 6 10 5
47. IR affected by CO2 in Reference Cell with no interfering gas in the Sample Chamber IR shinning through Measurement Cell of the GFC Wheel is reduced by additional CO in the Sample Chamber 0 Ah M R is reduced IR shining through Reference Cell is also reduced by additional CO in the Sample Chamber but to a lesser extent Figure 9 4 Affect of CO2 in the Sample on CO2 MEAS amp CO2 REF Once the Model GFC 7000TA has computed this ratio a look up table is used with interpolation to linearize the response of the instrument This linearized concentration value is combined with calibration SLOPE and OFFSET values to produce the CO concentration which is then normalized for changes in sample pressure 9 1 4 Interference and Signal to Noise Rejection If an interfering gas such as H20 vapor is introduced into the sample chamber the spectrum of the IR beam is changed in a way that is identical for both the reference and the measurement cells but without changing the ratio between the peak heights of CO2 MEAS and CO2 REF In effect the difference between the peak heights remains the same Teledyne Analytical Instruments 190 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer is Shifted IR shining through both cells is effected equally by interfering gas in the Sample Chamber Figure 9 5 Effects of Interfering Gas on CO2 MEAS amp CO2 REF Thus the difference in the peak heights and the resulting M
48. Model GFC7000TA Carbon Dioxide Analyzer 11 4 2 5 Packing Components for Return to Teledyne Instruments Customer Service Always pack electronic components and assemblies to be sent to Teledyne Instruments Customer Service in anti ESD bins tubes or bags WARNING e DO NOT use pink poly bags e NEVER allow any standard plastic packaging materials to touch the electronic component assembly directly e This includes but is not limited to plastic bubble pack Styrofoam peanuts open cell foam closed cell foam and adhesive tape e DO NOT use standard adhesive tape as a sealer Use ONLY anti ESD tape 1 Never carry the component or assembly without placing it in an anti ESD bag or bin 2 Before using the bag or container allow any surface charges on it to dissipate e If you are at the instrument rack hold the bag in one hand while your wrist strap is connected to a ground point e If you are at an anti ESD workbench lay the container down on the conductive work surface e In either case wait several seconds Place the item in the container 4 Seal the container If using a bag fold the end over and fastening it with anti ESD tape e Folding the open end over isolates the component s inside from the effects of static fields e Leaving the bag open or simply stapling it shut without folding it closed prevents the bag from forming a complete protective envelope around the device NOTE If you do not already h
49. NIST To ensure NIST traceability we recommend acquiring cylinders of working gas that are certified to be traceable to NIST Standard Reference Materials SRM These are available from a variety of commercial sources 7 1 3 Data Recording Devices A strip chart recorder data acquisition system or digital data acquisition system should be used to record data from the GFC 7000TA s serial or analog outputs If analog readings are used the response of the recording system should be checked against a NIST traceable voltage source or meter Data recording device should be capable of bi polar operation so that negative readings can be recorded For electronic data recording the GFC 7000TA provides an internal data acquisition system DAS which is described in detail in Section 6 7 7 2 Manual Calibration without Zero Span Valves This is the basic method for manually calibrating the Model GFC 7000TA CO Analyzer without functioning zero span valve options It is identical to the method described in the GETTING STARTED Section 3 of this manual and is repeated her for you convenience STEP ONE Connect the Sources of Zero Air and Span Gas as shown below Source of VENT here if input z ized SAMPLE GAS _ _ ps leah Calibrated Removed during g CO Gas calibration at span gas concentration EXHAUST VENT SPAN Chassis PRESSURE SPAN IZS PURGE LINE Figure 7 1 Pneumatic Connections Basic Configuration
50. NO2 NO nitrogen oxides often called odd nitrogen the sum of NOx plus other compounds such as HNOs definitions vary widely and may include nitrate NO3 PAN N20 and other compounds as well NH3 ammonia O2 molecular oxygen O3 ozone SO2 sulfur dioxide cm metric abbreviation for cubic centimeter replaces the obsolete abbreviation cc CPU Central Processing Unit DAC Digital to Analog Converter DAS Data Acquisition System DCE Data Communication Equipment DFU Dry Filter Unit DHCP Dynamic Host Configuration Protocol A protocol used by LAN or Internet servers to automatically set up the interface protocols between themselves and any other addressable device connected to the network DIAG Diagnostics the diagnostic settings of the analyzer DOM Disk On Module a 44 pin IDE flash drive with up to 128MB storage capacity for instrument s firmware configuration settings and data DOS Disk Operating System DRAM Dynamic Random Access Memory DR DOS Digital Research DOS DTE Data Terminal Equipment EEPROM Electrically Erasable Programmable Read Only Memory also referred to as a FLASH chip or drive ESD Electro Static Discharge ETEST Electrical Test Ethernet a standardized IEEE 802 3 computer networking technology for local area networks LANs facilitating communication and sharing resources FEP Fluorinated Ethylene Propylene polymer one of the polymers that Du Pont markets as Teflon Flash non volatile solid state memory FPI Fabry Perot
51. Noise lt 1 of reading RMS Lower Detectable Limit lt 0 4 ppm Zero Drift 24 hours lt 0 5 ppm Span Drift 24 hours lt 0 5 of reading Lag Time 10 seconds Rise Fall Time lt 60 seconds to 95 Linearity 1 of full scale Precision 0 5 of reading Sample Flow Rate Temperature Coefficient 800cm min 10 Oz Sensor option adds 110 cm min 20 to total flow though when installed lt 0 1 of Full Scale per C or 0 1 ppm per C whichever is greater Voltage Coefficient lt 0 05 of Full Scale per V AC Power Requirements 100V 120V 220V 240V 50 60 Hz Analog Output Ranges 10V 5V 1V 0 1V Recorder Offset 10 Analog Output Resolution 1 part in 4096 of selected full scale voltage Standard I O 1 Ethernet 10 100Base T 2 RS232 300 115 200 baud 2 USB device ports 8 Status opto isolated digital status outputs 6 Opto isolated digital control inputs 3 defined 3 spare 4 Analog outputs Optional I O 1 USB com port 1 RS485 8 Analog inputs 0 10V 12 bit 4 Digital alarm outputs Multidrop RS232 3 4 20mA current outputs Operating Temperature Range 5 40 C Humidity Range 0 95 RH non condensing Dimensions H x W x D Weight Environmental 7 x 17 x 23 5 178 mm x 432 mm x 597 mm 40 Ibs 18 1 kg Installation category over voltage category Il Pollution degree 2 Teledyne Analytical Instrum
52. SAMPLE XX XX OFFSET 0 000 SAMPLE XX XX TIME 16 23 34 SAMPLE XX XX SLOPE 1 000 9 5 3 Measurement Algorithm Once the IR photo detector is signal is demodulated into CO2 MEAS and CO2 REF by the sync demod board and converted to digital data by the motherboard the GFC 7000TA analytical software calculates the ratio between CO2 MEAS and CO2 REF This value is compared to a look up table is used with interpolation to linearize the response of the instrument The linearized concentration value is combined with calibration slope and offset values then normalized for changes in sample gas pressure to produce the final CO concentration This is the value that is displayed on the instrument front panel display and is stored in memory by the analyzer s DAS system Teledyne Analytical Instruments 214 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 5 4 Temperature and Pressure Compensation Changes in pressure can have a noticeable effect on the CO2 concentration calculation To account for this the Model GFC 7000TA software includes a feature which allows the instrument to compensation of the CO calculations based on changes in ambient pressure The TPC feature multiplies the analyzer s CO2 concentration by a factor which is based on the difference between the ambient pressure of the sample gas normalized to standard atmospheric pressure As ambient pressure increases the compen
53. TST gt CAL SETUP SETUP X X CFG DAS PASS CLK MORE EXIT SETUP X X RANGE CONTROL MENU MODE SET UNIT EXIT Press this button to set Press this button to select the the analyzer for SNGL concentration units of measure DUAL or AUTO ranges PPB PPM UGM MGM SETUP X X RANGE 500 000 CONC g 0 a e 0 0 ENTR EXT EXIT ignores the new setting and To change the value of the returns to the RANGE CONTROL rar ale irae aa ENTR Senie atom setting and number by pressing the key under SETUP X X RANGE em e 000 Conc each digit until the expected value returns to the appears RANGE CONTROL MENU 0 0 0 5 0 0 ENTR EXIT Teledyne Analytical Instruments 37 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 2 Set the expected CO span gas concentration SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP This sequence causes the analyzer to prompt for the expected CO span concentration M P CAL RANGE 500 00 PPM CO2 X XXX lt TST TST gt ZERO The CO span concentration values automatically default to 400 0 Conc EXIT EXIT ignores the new setting M P CAL CO2 SPAN CONC 400 000 Conc To change this value to and returns to the previous the actual concentration of display the span gas enter the ENTR EXIT ENTR accepts the new setting number by pressing the and returns to the button under each digit previous display unti
54. along the lt CH CH gt 0 ENTR EXI EXIT ignores the new bit string settings Pressthe key repeatedly to cycle through the available character set 0 9 Note Values of A F can also be set but are meaningless 6 15 4 8 Instrument ID Code Each instrument on a Hessen Protocol network must have a unique ID code The GFC 7000TA is programmed with a default ID code of 360 To change this code See Section 6 11 1 Teledyne Analytical Instruments 159 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer 7 CALIBRATION PROCEDURES This contains a variety of information regarding the various methods for calibrating a Model GFC 7000TA CO Analyzer as well as other supporting information NOTE The procedures in this assume that the calibration password feature is disabled the instruments default state If it is enabled a password prompt screen See Section 6 9 will appear after the CAL CALZ or CALS buttons are pushed but before the instrument enters the associated calibration mode 7 1 Before Calibration The calibration procedures in this assume that the Range Type Range Span and units of measure have already been selected for the analyzer If this has not been done please do so before continuing See Section 6 8 for instructions All Gas lines should be PTFE Teflon FEP glass stainless steel or brass NOTE If any problems occur while performing the following calibration procedures re
55. analog output signals accessible through a connector on the rear panel ANALOG OUT CO concentration outputs Test Channel Not Used 4 LOW range wh n DUAL HIGH range when DUAL mode is selected mode is selected Figure 6 6 Analog Output Connector Pin Out All three outputs can be configured either at the factory or by the user for full scale outputs of 0 1 VDC 1VDC 5VDC or 10VDC Additionally A1 and A2 may be equipped with optional 0 20 mADC current loop drivers and configured for any current output within that range e g 0 20 2 20 4 20 etc The user may also adjust the signal level and scaling of the actual output voltage or current to match the input requirements of the recorder or data logger See Section 6 13 4 The A1 and A2 channels output a signal that is proportional to the CO concentration of the sample gas Several modes are available which allow them to operate independently or be slaved together See Section 6 7 The user may also select between a variety of reporting range spans See Sections 6 8 3 6 8 4 and 6 8 5 EXAMPLE A1 OUTPUT Output Signal 0 5 VDC representing 0 1000 ppm concentration values A2 OUTPUT Output Signal 0 10 VDC representing 0 500 ppm concentration values Output A3 is only active if the O2 sensor option is installed In this case a signal representing the currently measured O concentration is output on this channel The output labeled A4 is special It c
56. and send data when requested This option is of particular use for instruments connected to multidrop or Hessen protocol networks 5 7 3 Second Language Switch TAI s instruments can be equipped with switch that activates an alternate set of display message in a language other than the instruments default language When present the switch accessed by opening the hinged front panel and is located on the rearward facing side of the display touchscreen driver PCA on the right side To activate this feature the instrument must also have a specially programmed Disk on Chip containing the second language Teledyne Analytical Instruments 61 FAQ Model GFC7000TA Carbon Dioxide Analyzer This page intentionally left blank Teledyne Analytical Instruments 62 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 OPERATING INSTRUCTIONS To assist in navigating the analyzer s software a series of menu trees can be found in Appendix A 1 of this manual NOTES The flow charts appearing in this contain typical representations of the analyzer s display during the various operations being described These representations may differ slightly from the actual display of your instrument The ENTR button may disappear if you select a setting that is invalid or out of the allowable range for that parameter such as trying to set the 24 hour clock to 25 00 00 Once you adjust the setting to an allowable va
57. and setting up this option See Section 6 11 7 Teledyne Analytical Instruments 57 FAQ Model GFC7000TA Carbon Dioxide Analyzer Multi drop LVDS board po Po po P o po po po P o pP o po P o pP o pP o pP o p o po p o Figure 5 4 Multi drop LVDS PCA Seated on CPU 5 6 Oxygen Sensor OPT 65 5 6 1 Theory of Operation 5 6 1 1 Paramagnetic measurement of O2 The oxygen sensor used in the GFC 7000TA analyzer utilizes the fact that oxygen is attracted into strong magnetic field most other gases are not to obtain fast accurate oxygen measurements The sensor s core is made up of two nitrogen filled glass spheres which are mounted on a rotating suspension within a magnetic field Figure 5 7 A mirror is mounted centrally on the suspension and light is shone onto the mirror that reflects the light onto a pair of photocells The signal generated by the photocells is passed to a feedback loop which outputs a current to a wire winding in effect a small DC electric motor mounted on the suspended mirror Oxygen from the sample stream is attracted into the magnetic field displacing the nitrogen filled spheres and causing the suspended mirror to rotate This changes the amount of light reflected onto the photocells and therefore the output levels of the photocells The feedback loop increases the amount of current fed into the winding in order to move the mirror back into its original position The more O2 prese
58. at dissipating static charges and isolating their contents from field effects and discharges e Never use ordinary plastic adhesive tape near an ESD sensitive device or to close an anti ESD bag The act of pulling a piece of standard plastic adhesive tape such as Scotch tape from its roll will generate a static charge of several thousand or even tens of thousands of volts on the tape itself and an associated field effect that can discharge through or be induced upon items up to a foot away Teledyne Analytical Instruments 258 ESD Model GFC7000TA Carbon Dioxide Analyzer 11 4 2 Basic anti ESD Procedures for Analyzer Repair and Maintenance 11 4 2 1 Working at the Instrument Rack When working on the analyzer while it is in the instrument rack and plugged into a properly grounded power supply 1 Attach your anti ESD wrist strap to ground before doing anything else e Use awrist strap terminated with an alligator clip and attach it to a bare metal portion of the instrument chassis This will safely connect you to the same ground level to which the instrument and all of its components are connected 2 Pause for a second or two to allow any static charges to bleed away 3 Open the casing of the analyzer and begin work Up to this point the closed metal casing of your analyzer has isolated the components and assemblies inside from any conducted or induced static charges 4 If you must remove a component from the instrument
59. before addressing the specific warning messages The analyzer will alert the user that a Warning message is active by flashing the FAULT LED and displaying the Warning message in the Param field along with the CLR button press to clear Warning message The MSG button displays if there is more than one warning in queue or if you are in the TEST menu and have not yet cleared the message The following display touchscreen examples provide an illustration of each 387 499 PPM The analyzer will also alert the user via the Serial I O COM port s and cause the FAULT LED on the front panel to blink Teledyne Analytical Instruments 218 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer To view or clear the various warning messages press SAMPLE WHEEL TEMP WARNING CO2 XX XX TEST deactivates Warning Messages until New warning s TEST CAL MSG CLR SETUP are activated SAMPLE RANGE 500 00 PPM CO2 XX XX MSGracivates Warning Messages lt TST TST gt CAL MSG CLR SETUP 4 lt TST TST gt keys replaced with TEST key SAMPLE WHEEL TEMP WARNING CO2 XX XX Press CLR to clear the lt TST TST gt CAL MSG CLR SETUP message currently being Displayed If more than one warning is active the next message will Make sure warning messages take its place are not due to Once the last warning has been PA cleared the analyzer returns to legitimate problems SAMPLE Mode
60. brass fitting Unplug the connector labeled Sample and measure the resistance of the thermistor at room temperature 25 C it should be 30K Ohms at operating temperature 48 C it should be 12K Ohms 10 4 1 2 Bench Temperature There are three possible failures that could cause the Bench temperature to be incorrect 1 The heater mounted to the bottom of the Absorption bench is electrically shorted or open Check the resistance of the two heater elements by measuring between pin 2 and 4 76 Ohms and pin 3 and 4 330 Ohms of the white five pin connector just below the sample temperature sensor on the Bench pin 1 is the pointed end 2 Assuming that the IC bus is working and that there is no other failure with the relay board the solid state relay K2 on the relay board may have failed Using the BENCH_HEATER parameter under the signal I O function as described above turn on and off K2 D3 on the relay board should illuminate as the heater is turned on Check the AC voltage present between pin 2 and 4 for a 100 or 115 VAC model and pins 3 and 4 for a 220 240 VAC model WARNING HAZARDOUS VOLTAGES ARE PRESENT DURING THIS TEST j Teledyne Analytical Instruments 238 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 3 Ifthe relay has failed there should be no change in the voltage across pins 2 and 4 or 3 and 4 NOTE K2 is in a socket for easy replacement 4 If K2 checks out OK the therm
61. by others bear the warranty of their manufacturer This warranty does not cover defects caused by wear accident misuse neglect or repairs other than those performed by Teledyne or an authorized service center We assume no liability for direct or indirect damages of any kind and the purchaser by the acceptance of the equipment will assume all liability for any damage which may result from its use or misuse We reserve the right to employ any suitable material in the manufacture of our apparatus and to make any alterations in the dimensions shape or weight of any parts in so far as such alterations do not adversely affect our warranty Important Notice This instrument provides measurement readings to its user and serves as a tool by which valuable data can be gathered The information provided by the instrument may assist the user in eliminating potential hazards caused by his process however it is essential that all personnel involved in the use of the instrument or its interface be properly trained in the process being measured as well as all instrumentation related to it The safety of personnel is ultimately the responsibility of those who control process conditions While this instrument may be able to provide early warning of imminent danger it has no control over process conditions and it can be misused In particular any alarm or control systems installed must be tested and understood both as to how they operate and as to how they
62. can be defeated Any safeguards required such as locks labels or redundancy must be provided by the user or specifically requested of Teledyne at the time the order is placed Therefore the purchaser must be aware of the hazardous process conditions The purchaser is responsible for the training of personnel for providing hazard warning methods and instrumentation per the appropriate standards and for ensuring that hazard warning devices and instrumentation are maintained and operated properly Teledyne Analytical Instruments the manufacturer of this instrument cannot accept responsibility for conditions beyond its knowledge and control No statement expressed or implied by this document or any information disseminated by the manufacturer or its agents is to be construed as a warranty of adequate safety control under the user s process conditions Trademarks All trademarks registered trademarks brand names or product names appearing in this document are the property of their respective owners and are used herein for identification purposes only Teledyne Analytical Instruments i Model GFC7000TA Carbon Dioxide Analyzer This page intentionally left blank Teledyne Analytical Instruments Safety Messages Model GFC7000TA Carbon Dioxide Analyzer SAFETY MESSAGES Important safety messages are provided throughout this manual for the purpose of avoiding personal injury or instrument damage Please read these messages c
63. detector is lowered by the two stage thermo electric cooler increasing the detectors resistance and raising the output voltage 9 3 4 Synchronous Demodulator Sync Demod Assembly 9 3 4 1 Overview While the photo detector converts fluctuations of the IR beam into electronic signals the Sync Demod Board amplifies these signals and converts them into usable information Initially the output by the photo detector is a complex and continuously changing waveform made up of Measure and Reference pulses The sync demod board demodulates this waveform and outputs two analog DC voltage signals corresponding to the peak values of these pulses CO2 MEAS and CO2 REF are converted into digital signals by circuitry on the motherboard then used by the CPU to calculate the CO concentration of the sample gas Additionally the synch demod board contains circuitry that controls the photo detector s thermoelectric cooler as well as circuitry for performing certain diagnostic tests on the analyzer Teledyne Analytical Instruments 202 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 56V Bias CO MEAS Sample amp Photo Signal detector Hold Conditioner Circuits TEC Contrl f Ff PHT DRIVE a E3 CO Reference Signal Conditioner Cooler Control Circuit l l l Thermo Electric I l l E Test A Gate E Test B Gate Compact Measure Gate td He Ss a eae I Prog rammable Measure Dark
64. electro static discharge The human nervous system isn t able to feel a static discharge of less than 3500 volts Most devices are damaged by discharge levels much lower than that e didn t touch it so there was no electro static discharge Electro static charges are fields whose lines of force can extend several inches or sometimes even feet away from the surface bearing the charge e It still works so there was no damage Sometimes the damaged caused by electro static discharge can completely sever a circuit trace causing the device to fail immediately More likely the trace will be only partially occluded by the damage causing degraded performance of the device or worse weakening the trace This weakened circuit may seem to function fine for a short time but even the very low voltage and current levels of the device s normal operating levels will eat away at the defect over time causing the device to fail well before its designed lifetime is reached These latent failures are often the most costly since the failure of the equipment in which the damaged device is installed causes down time lost data lost productivity as well as possible failure and damage to other pieces of equipment or property e Static Charges can t build up on a conductive surface There are two errors in this statement Conductive devices can build static charges if they are not grounded The charge will be equalized across the entire device but without ac
65. electronic scale and offset of the analog outputs can be adjusted see Section 6 13 4 3 Alternately use the data logger itself as the metering device during calibrations procedures Q How do perform a leak check A See Section 9 3 3 Q How do measure the sample flow A Sample flow is measured by attaching a calibrated rotameter wet test meter or other flow measuring device to the sample inlet port when the instrument is operating The sample flow should be 800 cm min 10 See Section 9 3 4 Q How long does the IR source last A Typical lifetime is about 2 3 years Teledyne Analytical Instruments 45 FAQ Model GFC7000TA Carbon Dioxide Analyzer Q Where is the sintered filter sample flow control orifice A These components are located inside the flow control assembly that is attached to the inlet side of the sample pump see Figure 3 3 See Section 11 6 1 for instructions on disassembly and replacement Q How do set up a SEQUENCE to run a nightly calibration check A The setup of this option is located in Section 7 6 Q How do set the analog output signal range and offset A Instructions for this can be found in Section 6 13 4 which describes analog I O configuration Q What is the averaging time for an GFC 7000TA A The default averaging time optimized for ambient pollution monitoring is 150 seconds for stable concentrations and 10 seconds for rapidly changing concentrations See Section10 5 1 for mo
66. for the O2 measurement Press EXIT to leave the calibration unchanged and return to the previous M P CAL 02 STB X XX CO2 XXXX lt TST TST gt ZERO CONC EXIT M P CAL O2 STB X XX CO2 XXXX lt TST TST gt ENTR CONC EXIT Wait until 02 STB falls below 0 1 This may take several minutes SAMPLE 02 STB X XX CO2 XXXX lt TST TST gt CAL SETUP GAS TO CAL CO2 Press ENTR to changes the OFFSET amp SLOPE values for the O2 measurement M P CAL O2 STB X XX CO2 XXXX lt TST TST gt ZERO SPAN CONC EXIT Press EXIT to leave the calibration unchanged and M P CAL O2 STB X XX CO2 XXXX return to the previous lt TST TST gt ENTR CONC EXIT M P CAL O2 STB X XX CO2 XXXX EXIT at this point lt TST TST gt ENTR CONC EXIT returns to the SAMPLE menu The Model GFC 7000TA Analyzer is now ready for operation Teledyne Analytical Instruments 43 Getting Started Model GFC7000TA Carbon Dioxide Analyzer NOTE Once you have completed the above set up procedures please fill out the Quality Questionnaire that was shipped with your unit and return it to Teledyne Instruments This information is vital to our efforts in continuously improving our service and our products THANK YOU Teledyne Analytical Instruments 44 FAQ Model GFC7000TA Carbon Dioxide Analyzer 4 FREQUENTLY ASKED QUESTIONS 4 1 FAQ s The following is a list from the Teledyne Instruments Customer Service
67. in Section 9 3 4 is essential If this test shows the flow to be correct check the pressure sensors as described in Section 11 5 6 5 The flow diagrams provided in this manual depicting the GFC 7000TA in its standard configuration and with options installed can help in trouble shooting flow problems For your convenience they are collected here Teledyne Analytical Instruments 228 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 2 1 GFC 7000TA Internal Gas Flow Diagrams SAMPLE GAS INLET Particulate Filter o o o c l oc 2 Ea wi o a EXHAUST m og og GAS OUTLET Lr ox 1 oT lt x bo ees oO Lu are a faba lt x e Sample Gas Flow Control SAMPLE PRESSURE SENSOR Flow Pressure Sensor PCA Purge Gas Flow Control NO2 FLOW SENSOR PURGE GAS INLET me Purge Gas Pressure Control Figure 10 6 GFC 7000TA Basic Internal Gas Flow j Teledyne Analytical Instruments 229 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer SAMPLE GAS INLET PRESSURE m4 SPAN INLET VENT SPAN OUTLET IZS INLET Shutoff Valve Sample Cal Particulate Filter Heat Sync
68. initiate the ELECTRICAL TEST and DARK CALIBRATION procedures Likewise the synch demod board uses this interface to send the SYNC warning signal to the CPU See Sections 6 9 5 6 9 6 and 11 1 1 Teledyne Analytical Instruments 209 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 3 6 6 External Digital I O This External Digital I O performs two functions status outputs and control inputs Status Outputs Logic Level voltages are output through an optically isolated 8 pin connector located on the rear panel of the analyzer These outputs convey good bad and on off information about certain analyzer conditions They can be used to interface with certain types of programmable devices See Section 6 13 1 1 Control Inputs By applying 5VDC power supplied from an external source such as a PLC or Data logger See Section 6 13 1 2 Zero and Span calibrations can be initiated by contact closures on the rear panel 9 3 7 C Data Bus An I C data bus is used to communicate data and commands between the CPU and the touchscreen display interface and the relay board IC is a two wire clocked digital serial I O bus that is used widely in commercial and consumer electronic systems A transceiver on the motherboard converts data and control signals from the PC 104 bus to IC The data is then fed to the touchscreen display interface and finally onto the relay board Interface circuits on the touchscreen display interface and
69. input voltage range for each analog input is 0 10 VDC ANALOG IN Figure 3 8 Analog In Connector Teledyne Analytical Instruments 20 Getting Started Model GFC7000TA Carbon Dioxide Analyzer Pin assignments for the Analog In connector are presented in Table 3 3 Table 3 3 Analog Input Pin Assignments PIN DESCRIPTION DAS PARAMETER 1 Analog input 1 AIN 1 2 Analog input 2 AIN 2 3 Analog input 3 AIN 3 4 Analog input 4 AIN 4 5 Analog input 5 AIN 5 6 Analog input 6 AIN 6 7 Analog input 7 AIN 7 8 Analog input 8 AIN 8 GND Analog input Ground N A 1 See Section 6 7 for details on setting up the DAS 3 5 3 Connecting Analog Outputs The GFC 7000TA is equipped with several analog output channels accessible through a connector on the back panel of the instrument The standard configuration for these outputs is mVDC An optional current loop output is available for each When the instrument is in its default configuration channels A1 and A2 output a signal that is proportional to the CO concentration of the sample gas Either can be used for connecting the analog output signal to a chart recorder or for interfacing with a data logger Output A3 is only used if the optional O2 sensor is installed Channel A4 is special It can be set by the user see Section 6 13 9 to output any one of the parameters accessible through the lt TST TST gt keys of the units sampl
70. is the request for the help screen e The following messages will be returned at logon e LOGON SUCCESSFUL Correct password given e LOGON FAILED Password not given or incorrect e LOGOFF SUCCESSFUL Connection terminated successfully To log on to the Model GFC 7000TA analyzer with SECURITY MODE feature enabled type LOGON 940331 940331 is the default password To change the default password use the variable RS232_PASS issued as follows V RS232_PASS NNNNNN Teledyne Analytical Instruments 151 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Where N is any numeral between 0 and 9 6 15 2 8 APICOM Remote Control Program APICOM is an easy to use yet powerful interface program that allows accessing and controlling any of Teledyne Instruments main line of ambient and stack gas instruments from a remote connection through direct cable modem or Ethernet Running APICOM a user can Establish a link from a remote location to the GFC 7000TA through direct cable connection via RS 232 modem or Ethernet e View the instrument s front panel and remotely access all functions that could be accessed when standing in front of the instrument e Remotely edit system parameters and set points e Download view graph and save data for predictive diagnostics or data analysis e Retrieve view edit save and upload DAS configurations e Check on system parameters for trouble shooting and quality control APIC
71. methods for energizing the control inputs The internal 5V available from the pin labeled is the most convenient method However if full isolation is required an external 5 VDC power supply should be used CONTROL IN CONTROL IN A B C D E F4 U A B C D E FG U Z S LI Z S Ej P E P R A R A o N 0 N 5 VDC Power Supply Local Power Connections External Power Connections The pin assignments for the digital control inputs can be found in the table below Table 3 6 Control Input Pin outs STATUS INPUT DEFINITION ON CONDITION REMOTE ZERO The Analyzer is placed in Zero Calibration mode The mode field of CAL the display will read ZERO CAL R REMOTE The Analyzer is placed in Span Calibration mode The mode field of SPAN CAL the display will read SPAN CAL R a aa Digital Ground May be connected to the ground of the data logger recorder Input pin for 5 VDC required to activate pins A F This can be from an external source or from the pin of the instruments STATUS connector Internal 5V Internal source of 5V which can be used to actuate control inputs Supply when connected to the U pin Pull up supply for inputs Teledyne Analytical Instruments 24 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 5 6 Connecting the Communications Interfaces For RS 232 or RS 485 communications through the analyzer s serial interface com ports refer to Section
72. minimal number of simple procedures that when performed regularly will ensure that the analyzer continues to operate accurately and reliably over its lifetime Repairs and troubleshooting are covered in Section 11 of this manual 8 1 Maintenance Schedule Table 9 1 shows a typical maintenance schedule for the analyzer Please note that in certain environments i e dusty very high ambient pollutant levels some maintenance procedures may need to be performed more often than shown NOTE A Span and Zero Calibration Check see CAL CHECK REQ D Column of Table 9 1 must be performed following certain of the maintenance procedure listed below See Sections 7 3 7 5 and 7 6 for instructions on performing checks CAUTION Risk of electrical shock Disconnect power before performing any of the following operations that require entry into the interior of the analyzer NOTE The operations outlined in this section are to be performed by qualified maintenance personnel only Maintenance Model GFC7000TA Carbon Dioxide Analyzer Table 8 1 Particulate Filter Verify Test Functions Pump Diaphragm Perform Flow Check Perform Leak Check Pneumatic lines Cleaning GFC 7000TA Maintenance Schedule ACTION Record and analyze Check Flow Verify Leak Tight Examine and clean Weekly or as needed Yes Weekly or after any Maintenance or Repair No Annually Yes Annu
73. namely no DC output and noisy output To assist tracing DC Power Supply problems the wiring used to connect the various printed circuit assemblies and DC Powered components and the associated test points on the relay board follow a standard color coding scheme as defined in the following table Table 10 6 DC Power Test Point and Wiring Color Codes NAME TEST POINT TP AND WIRE COLOR Dgnd 1 Black 5V 2 Red Agnd 3 Green 15V 4 Blue 15V 5 Yellow 12R 6 Purple 12V 7 Orange Teledyne Analytical Instruments 241 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer A voltmeter should be used to verify that the DC voltages are correct per the values in the table below and an oscilloscope in AC mode with band limiting turned on can be used to evaluate if the supplies are producing excessive noise gt 100 mV p p Table 10 7 DC Power Supply Acceptable Levels POWER CHECK RELAY BOARD TEST POINTS Ps2 19 wave e na 7 ns 12s Ps2 ooa Hvr 6 ooa 1 005 o0 10 5 3 I C Bus Operation of the I C bus can be verified by observing the behavior of D1 on the Relay PCA amp D2 on the Valve Driver PCA Assuming that the DC power supplies are operating properly the I C bus is operating properly if D1 on the relay PCA and D2 of the Valve Driver PCA are flashing There is a problem with the IC bus if both D1 on the relay PCA and D2 of the Valve Driver PCA are ON OFF const
74. panel display Also flowcharts in this manual contain typical representations of the analyzer s display during the various operations being described These representations are not intended to be exact and may differ slightly from the actual display of your instrument Teledyne Analytical Instruments 2 Introduction Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments Specifications Model GFC7000TA Carbon Dioxide Analyzer 2 SPECIFICATIONS AND APPROVALS 2 1 Specifications Table 2 1 Model GFC 7000TA Basic Unit Specifications GFC 7000TA Parameter GFC 7000TA Specification Ranges Physical Analog Output Measurement Units Min 0 2 ppm Full scale Max 0 2 000 ppm Full scale Selectable dual ranges and auto ranging supported ppb ppm ug m mg m user selectable Zero Noise lt 0 1 ppm RMS Span Noise lt 1 of reading RMS Lower Detectable Limit lt 0 2 ppm Zero Drift 24 hours lt 0 25 ppm Span Drift 24 hours lt 0 5 of reading Lag Time 10 seconds Rise Fall Time lt 60 seconds to 95 Linearity 1 of full scale Precision 0 5 of reading Sample Flow Rate 800cm min 10 O2 Sensor option adds 110 cm min 20 to total flow through when installed Temperature Coefficient lt 0 1 of Full Scale per C Voltage Coefficient AC Power Rating Analog Output Ranges lt 0 05 of Full Scale per V 1
75. rear panel to switch it between DTE and DCE modes See Section 6 11 4 If both LEDs are still not illuminated check the cable for proper wiring Teledyne Analytical Instruments 104 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 3 RS 485 Configuration of COM2 As delivered from the factory COM2 is configured for RS 232 communications To configure this port for RS 485 communication please contact the factory If COM2 is configured for RS 485 the USB com port is no longer enabled 6 11 4 DTE and DCE Communication RS 232 was developed for allowing communications between data terminal equipment DTE and data communication equipment DCE Basic terminals always fall into the DTE category whereas modems are always considered DCE devices The difference between the two is the pin assignment of the Data Receive and Data Transmit functions DTE devices receive data on pin 2 and transmit data on pin 3 DCE devices receive data on pin 3 and transmit data on pin 2 To allow the analyzer to be used with terminals DTE modems DCE and computers which can be either a switch mounted below the serial ports on the rear panel allows the user to switch between the two functions Teledyne Analytical Instruments 105 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 5 COM Port Communication Modes Each of the analyzer s serial ports can be configured to operate in a number of diff
76. relay boards convert the C data to parallel inputs and outputs An additional interrupt line from the touchscreen to the motherboard allows the CPU to recognize and service button presses on the touchscreen Power up Circuit This circuit monitors the 5V power supply during start up and sets the Analog outputs external digital I O ports and C circuitry to specific values until the CPU boots and the instrument software can establish control Teledyne Analytical Instruments 210 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 3 8 Power Supply Circuit Breaker The analyzer operates on 100 VAC 115 VAC or 230 VAC power at either 50Hz or 60Hz Individual units are set up at the factory to accept any combination of these five attributes As illustrated in Figure 10 15 power enters the analyzer through a standard IEC 320 power receptacle located on the rear panel of the instrument From there it is routed through the On Off switch located in the lower right corner of the Front Panel A 6 75 Amp circuit breaker is built into the ON OFF Switch AC power is distributed directly to the sample gas pump The bench and GFC wheel heaters as well as the GFC wheel receive AC power via the relay board AC Line power is converted stepped down and converted to DC power by two DC power supplies One supplies 12 VDC for valves and the IR source while a second supply provides 5 VDC and 15 VDC for logic and analog circuitry All D
77. response time e Temperature amp Pressure compensation e internal data logging with 1 min to 24 hour averages 1 2 Using This Manual This manual has the following data structures 1 TABLE OF CONTENTS Outlines the contents of the manual in the order the information is presented This is a good overview of the topics covered in the manual There is also a list of tables a list of figures and a list of appendices 2 SPECIFICATIONS This section contains a list of the analyzer s performance specifications Teledyne Analytical Instruments 1 Introduction Model GFC7000TA Carbon Dioxide Analyzer 3 GETTING STARTED Instructions for setting up installing and performing a functional check and initial calibration 4 FAQ Answers to the most frequently asked questions about operating the analyzer 5 OPTIONAL HARDWARE amp SOFTWARE A description of optional equipment to add functionality to your analyzer 6 OPERATION INSTRUCTIONS This section includes step by step instructions for operating the analyzer and using its various features and functions 7 CALIBRATION PROCEDURES General information and step by step instructions for calibrating your analyzer 8 EPA PROTOCOL CALIBRATION Because COQ is not declared a criteria air pollutant by the US EPA EPA equivalency is not required for this type of analyzer Therefore no special calibration methods are needed to satisfy EPA requirements 9 INSTRUMENT MAINTENANCE Des
78. sent to two different recording devices While the names imply that one should be used for sending data to a chart recorder and the other for interfacing with a data logger either can be used for both applications Both of these channels output a signal that is proportional to the CO concentration of the sample gas The A1 and A2 outputs can be slaved together or set up to operated independently A variety of scaling factors are available See Section 6 13 4 for information on setting the range type and scaling factors for these output channels A3 Output Analog output channel A3 is only active when the Oz sensor option is installed in the GFC 7000TA In this case the currently measured O concentration is output Test Function Output The fourth analog output labeled A4 is special It can be set by the user See Section 6 9 9 to carry the current signal level of any one of the parameters accessible through the SETUP gt MORE gt DIAG gt TEST CHAN OUTPUT submenu See Section 6 13 9 of the unit s software Output Loop back All four analog outputs are connected back to the A D converter through a Loop back circuit This permits the voltage outputs to be calibrated by the CPU without need for any additional tools or fixtures 9 3 6 5 Internal Digital I O This channel is used to communicate digital status and control signals about the operation of key components of the Optical Bench The CPU sends signals to the synch demod board that
79. slope values are valuable to monitor response drift and to document when the instrument was calibrated e WARNINGS Some data may be useful when stored if one of several warning messages appears such as WTEMPW GFC wheel temperature warning or PPRESW purge pressure warning This is helpful for trouble shooting by monitoring when a particular warning occurred 6 7 2 Default DAS Channels A set of default Data Channels has been included in the analyzer s software for logging CO2 concentration and certain predictive diagnostic data These default channels include but are not limited to CONC Samples CO concentration at one minute intervals and stores an average every hour with a time and date stamp Readings during calibration and calibration hold off are not included in the data By default the last 800 hourly averages are stored PNUMTC Collects sample flow and sample pressure data at five minute intervals and stores an average once a day with a time and date stamp This data is useful for monitoring the condition of the pump and critical flow orifice sample flow and the sample filter clogging indicated by a drop in sample pressure over time to predict when maintenance will be required The last 360 daily averages about 1 year are stored CALDAT Logs new slope and offset every time a zero or span calibration is performed This Data Channel also records the instrument readings just prior to performing a calibration This informati
80. that converts the light signal into a modulated voltage signal representing the attenuated intensity of the beam Photo Detector IR Beam Figure 9 1 Measurement Fundamentals 9 1 3 Gas Filter Correlation Unfortunately water vapor absorbs light at 4 3 um too To overcome the interfering effects of water vapor the Model GFC 7000TA adds another component to the IR light path called a gas filter correlation GFC wheel see Figure 10 2 Measurement Cell Pure N3 Reference Cell N2 with CO3 Figure 9 2 GFC Wheel 9 1 3 1 The GFC Wheel A GFC wheel is a metallic wheel into which two chambers are carved The chambers are sealed on both sides with material transparent to 4 3 um IR radiation creating two airtight cavities Each cavity is filled with specially composed gases One cell is filled with pure No the measure cell The other is filled with a combination of Nz and a high concentration of CO the reference cell Teledyne Analytical Instruments 188 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer IR unaffected by N2 in Measurement Cell IR IS affected by COz in Reference Cell IR Source Photo Detector GFC Wheel Figure 9 3 Measurement Fundamentals with GFC Wheel As the GFC wheel spins the IR light alternately passes through the two cavities When the beam is exposed to the reference cell the CO in the gas filter wheel strips the beam of most of the IR at 4 3m When t
81. the ID of one instrument needs to be changed Teledyne Analytical Instruments 101 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer The ID can also be used for to identify any one of several analyzers attached to the same network but situated in different physical locations 6 11 2 COM Port Default Settings Received from the factory the analyzer is set up to emulate a DCE or modem with pin 3 of the DB 9 connector designated for receiving data and pin 2 designated for sending data e COM1 RS 232 fixed DB 9 male connector o Baud rate 19200 bits per second baud o Data Bits 8 data bits with 1 stop bit o Parity None e COM2 RS 232 configurable DB 9 female connector o Baud rate 115000 bits per second baud o Data Bits 8 data bits with 1 stop bit o Parity None NOTE Cables that appear to be compatible because of matching connectors may incorporate internal wiring that make the link inoperable Check cables acquired from sources other than Teledyne Instruments for pin assignments before using In its default configuration the GFC 7000TA analyzer has two available RS 232 Com ports accessible via 2 DB 9 connectors on the back panel of the instrument The COM1 connector is a male DB 9 connector and the COM2 is a female DB9 connector Teledyne Analytical Instruments 102 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Male DB 9 RS 232 As seen from outside
82. the communication ports DAS data are defined by the PARAMETER type and are stored through different triggering EVENTS in data CHANNELS which relate triggering events to data parameters and define certain operational functions related to the recording and reporting of the data 6 7 1 1 DAS Channels The key to the flexibility of the DAS is its ability to store a large number of combinations of triggering events and data parameters in the form of data channels Users may create up to 20 data channels and each channel can contain one or more parameters For each channel one triggering event is selected and up to 50 data parameters which can be the same or different between channels Each data channel has several properties that define the structure of the channel and allow the user to make operational decisions regarding the channel Table 6 7 Table 6 7 DAS Data Channel Properties PROPERTY DESCRIPTION DEFAULT SETTING RANGE The name of the data channel Up to 6 letters and digits more with APICOM but only the first six are displayed on the front panel TRIGGERING The event that triggers the data channel to measure ATIMER See Appendix A 5 For a EVENT and store its data parameters See APPENDIX A 5 for a list of available triggering events NUMBER amp A user configurable list of data types to be recorded 1 DETMES See Appendix A 5 For a PARAMETER in any given channel See APPENDIX A 5 for a list complete list complete list
83. the filter needs replacement please use the following procedure see the Spare Parts list in Appendix B for part numbers and kits 1 Turn off power to the analyzer Locate the assembly attached to the sample pump see Figure 3 3 Disconnect the pneumatic connection from the flow assembly and the assembly from the pump Remove the fitting and the components as shown in the exploded view in Figure 11 6 Replace the o rings p n OR000001 and the sintered filter p n FLOO0001 If replacing the critical flow orifice itself P N 00094100 make sure that the side with the colored window usually red is facing upstream to the flow gas flow Oy Ot oS N Apply new Teflon tape to the male connector threads Re assemble in reverse order After reconnecting the power and pneumatic lines flow check the instrument as described in Section 9 3 4 DQ Pneumatic Connector Male 1 8 ey P N FT_70 Sprin 2 P N HW_20 Sintered Filter gt P N FL_01 7 Critical Flow Orifice P N 00094100 Make sure it is placed with the jewel down O Ring mp CG P N OR_01 7 Purge Housing P N 000850000 Figure 10 10 Critical Flow Restrictor Assembly Disassembly j Teledyne Analytical Instruments 251 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 6 2 Removing Replacing the GFC Wheel When removing or replacing the GFC Wheel it is important to perform the disassembly in the following order
84. the following configuration Channel No 0 NAME CONC TRIGGER EVENT ATIMER PARAMETERS Four parameters are included in this channel EVENT This channel is set up to record 800 data points Teledyne Analytical Instruments Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To edit the name of a data channel follow the above touchscreen button sequence and then press From the end of the previous button sequence SETUP XX NAME CONC lt SET SET gt EDIT PRINT SETUP XX NAME CONC ENTR accepts the new string and returns to the previous C oO N Cc menu EXIT ignores the new string and returns to the previous menu Press each button repeatedly to cycle through the available character set 0 9 A Z space amp _ lt gt 5 6 7 2 4 Trigger Events To edit the list of data parameters associated with a specific data channel press From the DATA ACQUISITION menu see Section 6 7 2 2 Edit Data Channel Menu SETUP X X 0 CONC ATIMER 1 Exits to the Main PREV NEXT INS DEL EDT PRNT Pata ae SETUP X X NAME CONC lt SET SET gt EDIT PRINT SETUP X X EVENT ATIMER lt SET SET gt EDIT PRINT SETUPXX EVENT ATIMER ENTR accepts the new string and returns to the previous lt PREV NEXT gt menu EXIT ignores the new string and returns to the previous menu Press each button repeatedly to cycle through the list of available trigger events ao
85. up on the bag or bin during travel to dissipate e Connect your wrist strap to ground e If you are at the instrument rack hold the bag in one hand while your wrist strap is connected to a ground point e If you are at a anti ESD work bench lay the container down on the conductive work surface e In either case wait several seconds 7 Open the container 11 4 2 4 Opening Shipments from Teledyne Instruments Customer Service Packing materials such as bubble pack and Styrofoam pellets are extremely efficient generators of static electric charges To prevent damage from ESD Teledyne Instruments ships all electronic components and assemblies in properly sealed anti ESD containers Static charges will build up on the outer surface of the anti ESD container during shipping as the packing materials vibrate and rub against each other To prevent these static charges from damaging the components or assemblies being shipped make sure that you always unpack shipments from Teledyne Instruments Customer Service by 1 Opening the outer shipping box away from the anti ESD work area 2 Carry the still sealed ant ESD bag tube or bin to the anti ESD work area Follow steps 6 and 7 of Section 11 4 2 3 above when opening the anti ESD container at the work station 4 Reserve the anti ESD container or bag to use when packing electronic components or assemblies to be returned to Teledyne Instruments Teledyne Analytical Instruments 260 ESD
86. which sample readings are taken and permanently recorded e SAMPLE PERIOD Determines how often DAS temporarily records a sample reading of the parameter in volatile memory The SAMPLE PERIOD is set to one minute by default and generally cannot be accessed from the standard DAS front panel menu but is available via the instruments communication ports by using APICOM or the analyzer s standard serial data protocol SAMPLE PERIOD is only used when the DAS parameter s sample mode is set for AVG MIN or MAX e REPORT PERIOD Sets how often the sample readings stored in volatile memory are processed e g average minimum or maximum are calculated and the results stored permanently in the instruments Disk on Chip as well as transmitted via the analyzer s communication ports The REPORT PERIOD may be set from the front panel If the INST sample mode is selected the instrument stores and reports an instantaneous reading of the selected parameter at the end of the chosen REPORT PERIOD In AVG MIN or MAX sample modes the settings for the SAMPLE PERIOD and the REPORT PERIOD determine the number of data points used each time the average minimum or maximum is calculated stored and reported to the com ports The actual sample readings are not stored past the end of the of the chosen REPORT PERIOD Also the SAMPLE PERIOD and REPORT PERIOD intervals are synchronized to the beginning and end of the appropriate interval of the instruments internal
87. 0 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer FROM ANALOG I O CONFIGURATION MENU DIAG ANALOG I O CONHGURATION DIAG AIO CONC_OUT_1 RANGE 5V SET gt EDIT PREV NEXT ENTR EXIT DIAG AIO CONC_OUT_1 REC OFS 0 mV DIAG AIO AOUTS CALIBRATED NO EDIT EXIT lt SET SET gt lt SET SET gt CAL If AutoCal is ON go to Section 6 7 3 DIAG AIO CONC_OUT_1 AUTO CAL OFF Press SET gt to select the analog output channel to be configured lt SET SET gt DISPLAYED AS CHANNEL CONC_OUT_1 A1 CONC_OUT 2 A2 DIAG AIO CONC_OUT_2 CALIBRATED NO TEST OUTPUT A4 lt SET CAL DIAG AIO CONC_OUT_1 5V NO CAL lt SET SET gt EDIT DIAGAIO CONC_OUT_1 VOLT Z 0 mV U100 UP10 UP DOWN DN10 D100 ENTR EXIT Press to increase decrease the analog output by 100 10 or 1 counts EXIT ignores the DIAG AIO CONC_OUT_1 VOLT S 4500 mV new setting ENTR accepts the U100 UP10 UP DOWN DN10 D100 ENTR EXIT new setting Continue adjustments until the voltage measured at the output of the analyzer and or the input of the recording device matches the value in the upper right hand corner of the display to the tolerance listed in Table 6 20 The concentration display will not change Only the voltage reading of your voltmeter will change DIAG AIO CONC_OUT_1 CALIBRATED YES lt SET CAL EXIT 6 13 4 4 Current Loop Outp
88. 0 RS 232 REPORT OFF PARAMETER RATIO CHANNEL ENABLED ON MODE INST CAL HOLD OFF OFF PRECISION 3 STORE NUM SAMPLES OFF PARAMETER CONC1 PARAMETER OFSET1 MODE INST PRECISION 1 STORE NUM SAMPLES OFF PARAMETER DETMES MODE INST PRECISION 1 STORE NUM SAMPLES OFF PARAMETER BNTEMP MODE AVG PRECISION 1 STORE NUM SAMPLES OFF NAME TEMP EVENT ATIMER REPORT PERIOD 000 06 00 NO OF RECORDS 400 RS 232 REPORT OFF CHANNEL ENABLED ON CAL HOLD OFF OFF PARAMETER BOXTMP MODE AVG PRECISION 1 STORE NUM SAMPLES OFF PARAMETER PHTDRV MODE AVG PRECISION 1 STORE NUM SAMPLES OFF Figure 6 4 Default DAS Channels Setup Teledyne Analytical Instruments 75 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer These default Data Channels can be used as they are or they can be customized from the front panel to fit a specific application They can also be deleted to make room for custom user programmed Data Channels Appendix A 5 lists the firmware specific DAS configuration in plain text format This text file can either be loaded into APICOM and then modified and uploaded to the instrument or can be copied and pasted into a terminal program to be sent to the analyzer NOTE Sending an DAS configuration to the analyzer through its COM ports will replace the existing configuration and will delete all stored data Back up any existing data and the DAS configuration before u
89. 00TA Carbon Dioxide Analyzer 6 Install the new Disk on Module making sure the notch at the end of the chip matches the notch in the socket 7 It may be necessary to straighten the pins somewhat to fit them into the socket Press the chip all the way in 8 Close the rear panel and turn on power to the machine 9 Ifthe replacement DOM carries a firmware revision re enter all of the setup information Teledyne Analytical Instruments 254 ESD Model GFC7000TA Carbon Dioxide Analyzer 11 A PRIMER ON ELECTRO STATIC DISCHARGE Teledyne Instruments considers the prevention of damage caused by the discharge of static electricity to be extremely important part of making sure that your analyzer continues to provide reliable service for a long time This section describes how static electricity occurs why it is so dangerous to electronic components and assemblies as well as how to prevent that damage from occurring 11 1 How Static Charges are Created Modern electronic devices such as the types used in the various electronic assemblies of your analyzer are very small require very little power and operate very quickly Unfortunately the same characteristics that allow them to do these things also make them very susceptible to damage from the discharge of static electricity Controlling electrostatic discharge begins with understanding how electro static charges occur in the first place Static electricity is the result of someth
90. 00V 120V 220V 240 V 50 60 Hz 10V 5V 1V 0 1V selectable Analog Output Resolution 1 part in 4096 of selected full scale voltage Recorder Offset 10 Standard I O 1 Ethernet 10 100Base T 2 RS 232 300 115 200 baud 2 USB device ports 8 opto isolated digital status outputs 6 opto isolated digital control inputs 3 defined 3 spare 4 analog outputs Optional I O 1 USB com port 1 RS485 8 analog inputs 0 10V 12 bit 4 digital alarm outputs Multidrop RS232 3 4 20mA current outputs Environmental Temperature Range Humidity Range Installation category over voltage category II Pollution degree 2 5 40 C 0 95 RH non condensing Dimensions H x W x D 7 x 17 x 23 5 178 mm x 432 mm x 597 mm Teledyne Analytical Instruments Specifications Model GFC7000TA Carbon Dioxide Analyzer GFC 7000TA Parameter GFC 7000TA Specification Weight AO Ibs 18 1 kg Certifications CE EN61010 1 90 A1 92 A2 95 EN61326 Class A 1 At constant temperature and voltage Table 2 2 Model GFC 7000TM Basic Unit Specifications GFC 7000TM Parameter GFC 7000TM Specification Ranges Physical Analog Output Min 0 4 ppm Full scale Max 0 4000 ppm Full scale Selectable dual ranges and auto ranging supported Measurement Units ppb ppm pg m mg m selectable Zero Noise lt 0 2 ppm RMS Span
91. 1 Ps a u l SAMPLE p TEMP coz cof 1 Sam RELAY P ple Flow r S M R eee amp Pressure BOARD i 8 E E e Bigs Sensors eae A F I tatus oF s e A LED BENCH 2 TEMP a 2 Cc TEC Control 5 IR 0p Source WHEEL SYNC PHT Photo Wi TEMP Drive H Detector Output GFC Oz SENSOR nea i TEMP i EE Optical optional 4 chmi p U eae Bench Segment Sensor Bench Heat Figure 9 9 GFC 7000TA Electronic Block Diagram j Teledyne Analytical Instruments 198 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 3 2 CPU The units CPU card installed on the motherboard inside the rear panel is a low power 5 VDC 720mA max high performance Vortex 86SX based microcomputer running Windows CE Its operation and assembly conform to the PC 104 specification Disk on Module LVDS DOM transmitter board LEDs located on CPU below LVDS transmitter board IDE active green Power active d red CPU oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo oo RS 485 COM1 J11 J15 USB Tr RS 232 only COM2 J12 J2 for LCD RS 232 or screen RS 485 Figure 9 10 CPU Board The CPU includes two types of non volatile data storage a Disk on Module DOM and an embedded flash chip 9 3 2 1 Disk On Module DOM The DOM is a 44 pin IDE flash chip with storage capacity to 129 MB It is used to store the operating system the Teledyne firmware and most of the operational dat
92. 30 Performing Leak Checks ssc az cevevels exh esee can tas E a tes cedecgeddasb yas Gs dade ebdace oes E aa aaia 185 8 3 4 Performing a Sample Flow Che CK issie eececceceeeeeeeeeeneeeseeaeeeeeneeeeesaeeeeeeaaeeeseeeeeeesaeeeeesaeeesneeesenateeeeeaaes 186 8 3 5 Cleaning the Optical BENCH incirin rrna neie n na Aaa A a aE deca E Naana ER aA EEE 186 8 3 6 Cleaning Exterior Surfaces of the GFC 7000 A sseesiesiiiissiissrrresiiiresiinneiisntiirnsiinnennrinntrnrenentt 186 9 THEORY OF OPERATION a tiecccescetececedescectecesaccdebicecssececdtssestivetueteacustcenicesaesctssytcenSeesstaucsatpsuseessdeesdutesekessaudteuurets 187 9 1 Measu urement Method a otor innoe esenea eeaeee aaaea a aaa Ea aeoe ae Eea oiea tagdeedacbedsFacdecseudacebee 187 QV 1e Beers LaWeriniinei n a thle L laced aa A Ea sts aai E Eaa radai 187 9 1 2 Measurement Fundamentals a ierieinarntne ike ai n e eia a Aan EEEE a Ani SEE naaa aE Eaa 187 9 1 3 Gas Filter Corelationy sc 3 5 ctecspesticctes e eaae aa e E a eea AAA e E A ARS 188 9 1 4 Interference and Signal to Noise Rejection eee sceeeeseeeeeneeeceenneeeceeeeeeseeeeeeenaeeeeseneaeeeseeeesnaeeeennaeees 190 9 2 Pneumatic Operations Anccen Sei se aie ei ie a ans eA ees aun 193 9 2 1 Sample Gas FlOW sace rriet nein es ei a aaar E a oa od aoa rhe Maen pa ose 194 9 22 Flow Rate Control s r T aE a ce eesunteesaanataedebd ae E a aa a a E n N 194 9 2 3 Purge G s Pressure Control isisi iiini a e a Aa aai aa Aie 196 924
93. 5 C Zero Air can be purchased in pressurized canisters 9 Attach an exhaust line to the exhaust outlet port e The exhaust from the pump and vent lines should be vented to atmospheric pressure using maximum of 10 meters of 1 4 PTEF tubing CAUTION Venting should be outside the shelter or immediate area surrounding the instrument j Teledyne Analytical Instruments 28 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 10 Attach a source of dried air scrubbed of CO to the purge inlet port NOTE The minimum gas pressure of the source of purge air should be 7 5 psig If the source of the purge air is shared by a Teledyne Instruments T700 as shown in figure 3 7 the minimum gas pressure should be 25 psig and should not exceed 35 psig 11 Once the appropriate pneumatic connections have been made check all pneumatic fittings for leaks using a procedure similar to that defined in Section 9 3 3 Teledyne Analytical Instruments 29 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 6 2 Connections with Internal Valve Options Installed Figure 3 11 and Figure 3 12 show the pneumatic connections for the ambient zero and ambient span valve option Option 50A Source of SAMPLE GAS Removed during Ba calibration VENT here if input is pressurized Calibrated CO Gas Model T700 gas at 100x span gas Dilution concentration Calibrator SAMPLE EXHAUST Figu
94. 5 5 Status LEDs Eight LEDs are located on the analyzer s relay board to show the current status on the various control functions performed by the relay board see Figure 10 14 They are Table 9 2 Relay Board Status LED s LED COLOR FUNCTION STATUS WHEN LIT STATUS WHEN UNLIT D1 RED Watchdog Circuit Cycles On Off Every 3 Seconds under direct control of the analyzer s CPU D2 YELLOW Wheel Heater HEATING NOT HEATING D3 YELLOW Bench Heater HEATING NOT HEATING D4 YELLOW Spare N A N A D5 GREEN Sample Cal Gas Valve Open to CAL GAS Valve Open to SAMPLE GAS Valve Option FLOW FLOW D6 GREEN Zero Span Gas Valve Open to SPAN GAS Valve Open to ZERO GAS FLOW Valve Option FLOW D7 GREEN Shutoff Valve Valve Open to CAL GAS Valve CLOSED to CAL GAS Option FLOW FLOW D8 GREEN IR SOURCE Source ON Source OFF Teledyne Analytical Instruments 206 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer DC VOLTAGE TEST POINTS a a STATUS LED s Figure 9 15 Location of relay board Status LED s 9 3 5 6 C Watch Dog Circuitry Special circuitry on the relay board monitors the activity on the C bus and drives LED D1 Should this LED ever stay ON or OFF for 30 seconds the watchdog circuit will automatically shut of all valves as well as turn off the IR Source and all heaters The GFC wheel motor will still be running as will the Sample Pump which is not controlled by th
95. 6 11 of this manual for instructions on their configuration and usage 3 5 6 1 Connecting to a LAN or the Internet For network or Internet communication with the analyzer connect an Ethernet cable from the analyzer s rear panel Ethernet interface connector to an Ethernet access port NOTE The GFC 7000TA firmware supports dynamic IP addressing or DHCP If your network also supports DHCP the analyzer will automatically configure its LAN connection appropriately If your network does not support DHCP see Section 6 11 6 3 for instructions on manually configuring the LAN connection 3 5 6 2 Connecting to a Personal Computer PC If the analyzer is configured with the USB com option connect a USB cable between the USB ports of the analyzer s rear panel and a desktop or laptop PC for direct communication between the two Their baud rates must match see Section 6 11 8 3 5 6 3 Connecting to a Multidrop Network If your unit has a Teledyne Instruments RS 232 multidrop card Option 62 see Section 6 11 7 for instructions on setting it up 3 6 Pneumatic Connections CAUTION Do not operate this instrument until you ve removed dust plugs from SAMPLE and EXHAUST ports on the rear panel Teledyne Analytical Instruments 25 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 6 1 Basic Pneumatic Connections NOTE In order to prevent dust from getting into the gas flow ch
96. 626 961 2538 Web www teledyne ai com 5 1 Rack Mount Kits Options 20A 20B 21 and 23 OPTION NUMBER DESCRIPTION 20A Rack mount brackets with 26 in chassis slides 20B Rack mount brackets with 24 in chassis slides 21 Rack mount brackets only 23 Rack Mount for External Pump Pack No Slides Each of these options permits the Analyzer to be mounted in a standard 19 x 30 RETMA rack 5 2 Current Loop Analog Outputs Option 41 This option adds isolated voltage to current conversion circuitry to the analyzer s analog outputs This option may be ordered separately for any of the analog outputs it can be installed at the factory or added later Call TAI sales for pricing and availability The current loop option can be configured for any output range between O and 20 mA Figure 5 1 provides installation instructions and illustrates a sample combination of one current output and two voltage outputs configuration Information on calibrating or adjusting these outputs can be found in Section 6 13 4 4 Teledyne Analytical Instruments 51 FAQ Model GFC7000TA Carbon Dioxide Analyzer J19 J21 J23 Analog Output Setup For voltage output of any one two or all 1 Jumper two leftmost pins 2 Jumper next two leftmost pins 3 Calibrate per Analog I O Configuration menu J19 J21 J23 For current output of any one two or all 1 Remove jumper shunts 2 Install Current Loop option
97. A design includes a manually adjustable pressure regulator see Figure 3 5 and Figure 3 6 for Purge Gas Pressure Regulator that maintains the pressure of the purge air feed at 7 5 psig 9 2 4 Particulate Filter The Model GFC 7000TA Analyzer comes equipped with a 47 mm diameter Teflon particulate filter with a 5 micron pore size The filter is accessible through the front panel which folds down to allow access and should be changed according to the suggested maintenance schedule described in Table 9 1 9 2 5 Pneumatic Sensors 9 2 5 1 Sample Pressure Sensor An absolute value pressure transducer plumbed to the outlet of the sample chamber is used to measure sample pressure The output of the sensor is used to compensate the concentration measurement for changes in air pressure This sensor is mounted to a printed circuit board with the sample flow sensor on the sample chamber see the following section and Figure 3 3 9 2 5 2 Sample Flow Sensor A thermal mass flow sensor is used to measure the sample flow through the analyzer The sensor is calibrated at the factory with ambient air or N2 but can be calibrated to operate with samples consisting of other gases such as COz See Section 9 3 4 This sensor is mounted to a printed circuit board with the Sample Pressure sensor on the sample chamber see the previous section and Figure 3 3 Teledyne Analytical Instruments 196 Theory of Operation Model GFC7000TA Carbon Dioxide Analyz
98. AMPLE ENTER SETUP PASS 818 Use these buttons See Table 6 19 to edit HOSTNAME HOSTNAME T360 FIELD1 6 INET 0 gt INITIALIZING INET 100 INITIALIZATION SUCCEEDED INITIALIZATION FAILED ENTR SETUP XX COMMUNICATIONS MENU Contact your IT Network Administrator ID INET Table 6 13 Internet Configuration Touchscreen Functions BUTTON FUNCTION Moves the cursor one character to the left Moves the cursor one character to the right Inserts a character before the cursor location Deletes a character at the cursor location Press this button to cycle through the range of numerals and characters available for insertion 0 9 A Z space O O amp _ lt gt 7 Accepts the new setting and returns to the previous menu Ignores the new setting and returns to the previous menu Some buttons only appear as applicable Teledyne Analytical Instruments 113 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 7 Multidrop RS 232 Set Up The RS 232 multidrop consists of a printed circuit assembly that is seated on the analyzer s CPU card see Figures 6 10 and 6 13 and is connected to the CPU and the motherboard This PCA includes all circuitry required to enable your analyzer for multidrop operation It converts the instrument s RS232 port to multidrop configuration allowing up to eight analyzers to be connected the same I O port of the host computer Because both of the
99. AUTION The operations outlined in this section are to be performed by qualified maintenance personnel only CAUTION Risk of electrical shock Disconnect power before performing the following operations 10 1 General Troubleshooting Hints The analyzer has been designed so that problems can be rapidly detected evaluated and repaired During operation the analyzer continuously performs self check diagnostics and provides the ability to monitor the key operating parameters of the instrument without disturbing monitoring operations A systematic approach to troubleshooting will generally consist of the following four steps 1 Note any WARNING MESSAGES and take corrective action as required 2 Examine the values of all TEST functions and compare to factory values Note any major deviations from the factory values and take correction action as required 3 Use the internal electronic status LED s to determine whether the CPU and I C buses are running and if the sync demodulator and relay board are operating properly Verify that the DC power supplies are operating properly by checking the voltage test points on the relay board Please note that the analyzers DC power wiring is color coded and these colors match the color of the corresponding test points on the relay board 4 SUSPECT A LEAK FIRST Data from Teledyne Instruments service department indicates that 50 of all problems are eventually traced to leaks i
100. As XXXX OPERATIONAL FLAGS Instrument Off 0100 In Manual Calibration Mode 0200 0001 0002 0004 0008 0010 0020 0040 0080 In Zero Calibration Mode 0400 In Span Calibration Mode 0800 UNITS OF MEASURE FLAGS 0000 4000 6000 Rear Board Not Detected NOTES It is possible to assign more than one flag to the same Hessen status bit This allows the grouping of similar flags such as all temperature warnings under the same status bit Be careful not to assign conflicting flags to the same bit as each status bit will be triggered if any of the assigned flags is active Teledyne Analytical Instruments 158 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To assign or reset the status flag bit assignments press SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP X X SECONDARY SETUP MENU co SETUP X X COMMUNICATIONS MENU ID INET HESN COM2 Repeat pressing SET gt until SETUP X HESSEN STATUS FLAGS SET gt EDIT SETUP X SYNC WARNING 0000 PREV NEXT EDIT Repeat pressing NEXT or PREV until the desired message flag is displayed See Table 6 27 For xxample SETUP X SYSTEM RESET 0000 PREV NEXT EDIT CH and CH cciond i SETUP X SYSTEM RESET 0 000 ENTR accepts the new cursor left and settings right
101. C between digital ground and TP 5 on the sync demod board If not then check the wiring between the sync demod and opto pickup assembly see interconnect drawing 04216 If good then the sync demod board is bad 2 Verify that the IR source is operating Section 10 5 7 4 3 With the analyzer connected to zero air measure between TP11 measure and analog ground and TP12 reference and analog ground e If they are similar to values recorded on the factory data sheet then there is likely a problem with the wiring or the A D converter Teledyne Analytical Instruments 243 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer e If they are not then either the sync demodulator board or the IR photodetector are bad See Section 10 4 1 4 for problems with the IR photodetector TEC drive 10 5 7 2 Opto Pickup Assembly Operation of the opto pickup PCA 04088 can be verified with a voltmeter Measure the AC and DC voltage between digital ground on the relay board or touchscreen and TP1 and TP2 on the sync pickup PCA For a working board with the GFC motor spinning they should read 2 4 0 1 VAC and 2 5 0 15 VDC Further confirmation that the pickups and motor are operating properly can be obtained by measuring the frequency at TP1 and TP2 using a frequency counter a digital volt meter with a frequency counter or an oscilloscope per the table below Table 10 9 Opto Pickup Board Nominal Output Frequencies NOMINAL M
102. C voltages are distributed via the relay board CAUTION Should the AC power circuit breaker trip investigate and correct the condition causing this situation before turning the analyzer back on ON OFF T h SWITCH ouchscreen AC POWER Pressure ENTRANCE Display Sensors ico LVDS transmittedr board t PS 1 5 VDC 15 VDC RELAY BOARD KEY Mother AC POWER a Board r PS 2 12 VDC DC POWER q Sync Demod IR Source Cooling Fan GFC Wheel Motor MR amp Valve Options Segment Sensors Heaters Figure 9 16 Power Distribution Block Diagram j Teledyne Analytical Instruments 211 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 4 Front Panel Touchscreen Display Interface Users can input data and receive information directly through the front panel touchscreen display The LCD display is controlled directly by the CPU board The touchscreen is interfaced to the CPU by means of a touchscreen controller that connects to the CPU via the internal USB bus and emulates a computer mouse Back Light Supply PAM TFT BIAS Supply 10 4 7 0 16 4V LVDS Transmitter Board Touch Screen Controller Remote R Utility ene Sy Controller USB2 HUB Front Panel Interface PCA Powered LAN COM4 USB4 ISB Master E
103. CAL or CALS button prior to introducing span gas into the analyzer Teledyne Analytical Instruments 141 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 14 1 Setting the Concentration Alarm Limits To enable either of the CO concentration alarms and set the Limit points press CO2 X XXX SAMPLE RANGE 500 000 PPM lt TST TST gt CAL SETUP SETUP XX ALARM MENU SETUP X X PRIMARY SETUP MENU ALM1 ALM2 CFG DAS RNGE PASS CLK MORE SETUP X ALARM 1 LIMIT OFF SETUP XX SECONDARY SETUP MENU OFF ALRM SETUP X ALARM 1 LIMIT ON Toggle these buttons to scroll through the available character set SETUP X 0 9 ALARM 1 LIMIT 200 00 PPM ENTR 6 15 Remote Operation of the Analyzer 6 15 1 Remote Operation Using the External Digital I O 6 15 1 1 Status Outputs ENTR accepts the new settings EXIT ignores the new settings The status outputs report analyzer conditions via optically isolated NPN transistors which sink up to 50 mA of DC current These outputs can be used interface with devices that accept logic level digital inputs such as programmable logic controllers PLC s Each Status bit is an open collector output that can withstand up to 40 VDC All of the emitters of these transistors are tied together and available at D NOTE Most PLC s have internal provisions fo
104. CONCENTRATION Set the expected O span gas concentration This should be equal to the percent concentration of the O span gas of the selected reporting range default factory setting 20 8 the approximate O content of ambient air Teledyne Analytical Instruments 40 Getting Started Model GFC7000TA Carbon Dioxide Analyzer SAMPLE RANGE 500 000 PPM CO2 XXX X lt TST TST gt CAL SETUP GAS TO CAL CO2 ENTR EXIT M P CAL A1 NXCNC1 100PPM NOX X XXX lt TST TST gt ZERO SPAN CONC EXIT GAS TO CAL 02 ENTR EXIT M P CAL O2 SPAN CONC 20 8 EXIT ignores the new setting and returns to the previous display 0 0 8 0 ENTR EXIT ENTR accepts the new setting and returns to the previous menu The Oz span concentration value automatically defaults to 20 8 If this is not the the concentration of the span gas being used toggle these buttons to set the correct concentration of the O2 calibration gases STEP 2 ACTIVATE O SENSOR STABILITY FUNCTION To change the stability test function from NO concentration to the O sensor output press Teledyne Analytical Instruments 41 Getting Started Model GFC7000TA Carbon Dioxide Analyzer SAMPLE RANGE 500 000 PPM CO2 XXX X SETUP X X 0 DAS_HOLD_OFF 15 0 Minutes lt TST TST gt CAL SETUP lt PREV NEXT gt JUMP EDIT PRNT EXIT SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT Con
105. EASURED FREQUENCY AC MAINS FREQ TP1 TP2 50 Hz 25 300 60 Hz 30 360 10 5 7 3 GFC Wheel Drive If the D1 and D2 on the sync demodulator board are not flashing then 1 Check for power to the motor by measuring between pins 1 and 3 on the connector feeding the motor For instruments configured for 120 or 220 240VAC there should be approximately 88 VAC for instruments configured for 100VAC it should be the voltage of the AC mains approximately 100VAC 2 Verify that the frequency select jumper JP4 is properly set on the Relay Board For 50 Hz operation it should be installed For 60 Hz operation may either be missing or installed in a vertical orientation 3 If there is power to the motor and the frequency select jumper is properly set then the motor is likely bad See Section 10 6 2 for instructions on removing and replacing the GFC assembly that the motor is bolted to 10 5 7 4 IR Source The IR source can be checked using the following procedure 1 Disconnect the source and check its resistance when cold When new the source should have a cold resistance of more than 1 5 Ohms but less than 3 5 Ohms If not then the source is bad 2 With the source disconnected energize the analyzer and wait for it to start operating Measure the drive Voltage between pins 1 and 2 on the jack that the source is normally connected to it should be 11 5 0 25 VDC If not then there is a problem with either the wiring the Relay Boa
106. ENU lt TST TST gt CAL SETUP MODE SET UNIT EXIT SETUP X X PRIMARY SETUP MENU SETUP X X LOW RANGE 500 0 Conc CFG DAS RNGE PASS CLK MORE EXIT 0 0 1 a 0 O ENTR EXIT Toggle the numeral buttons to set the upper limit of each SETUP X X RANGE CONTROL MENU SETUP X X HIGH RANGE 500 0 Conc range MODE SET UNIT EXIT 0 o 5 0 o 0 ENTR EXIT SETUPXX RANGE MODE SNGL SETUP X X RANGE CONTROL MENU EXIT Returns to the Main SNGL DUAL AUTO ENTR EXIT MODE SET UNIT EXIT SAMPLE Display oa When the instrument s range mode is set to DUAL the concentration field in the upper right hand corner of the display alternates between displaying the low range value and the high range value The concentration currently being displayed is identified as follows C1 Low or A1 and C2 High or A2 NOTE In DUAL range mode the LOW and HIGH ranges have separate slopes and offsets for computing CO concentration The two ranges must be independently calibrated Teledyne Analytical Instruments 93 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 8 5 Auto Range Mode AUTO In AUTO range mode the analyzer automatically switches the reporting range between two user defined ranges low and high The unit will switch from low range to high range when the CO concentration exceeds 98 of the low range span The unit will return from high range back to low range once both the CO concentration falls below 75 of the low range span
107. EQ1 SEQ2 and SEQ3 Each sequence can operate in one of 3 Modes or be disabled Table 7 1 AUTOCAL Modes DISABLED Disables the Sequence ZERO Causes the Sequence to perform a zero calibration check ZERO SPAN Causes the Sequence to perform a zero and span concentration calibration check Causes the Sequence to perform a span concentration calibration check For each mode there are seven parameters that control operational details of the SEQUENCE They are Table 7 2 AutoCal ATTRIBUTE Setup Parameters Teledyne Analytical Instruments 173 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer The following example sets Sequence 2 to do a Zero Span Calibration every other day starting at 1 am on September 4 2001 lasting 15 minutes without calibration This will start 2 hour later each iteration fp sewn 2 Dene Sequence w2 Mode ZEROSPAN Select Zero and Span Mode Timer Enable ON Enablethetmer U U UO Starting Time oroo First Spanstaris atoom C Detadays 2 Do Sequence 2 everyotherday DeltaTime 00 30 O Do Sequence 2 1 2 hr later each day O Durin s0 Operate Span valvefor 15min Calibrate no Donotcatibrate at end of Sequence NOTE The programmed STARTING_TIME must be a minimum of 5 minutes later than the real time clock See Section 6 10 for setting real time clock NOTE Avoid setting two or more sequences at the same time
108. EXT ENTR EXIT Continue pressing SET until DIAG AIO AIN CALIBRATED NO lt SET SET gt CAL EXIT Instrument DIAG AlO lt CALIBRATING A D ZERO 5 calibrates automatically CALIBRATING A D SPAN DIAG AIO AIN CALIBRATED YES Exit to return to the ANALOG I O CONFIGURATION lt SET SET gt CAL EXIT MENU 6 13 4 6 Configuring Analog Inputs Option Channels To configure the analyzer s external analog inputs option define for each channel e gain number of units represented by 1 volt e offset volts e engineering units to be represented in volts each press of the touchscreen button scrolls the list of alphanumeric characters from A Z and 0 9 e whether to display the channel in the Test functions To access and adjust settings for the external Analog Inputs option channels press Teledyne Analytical Instruments 134 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer DIAG ANALOG O CONFIGURATION ENTR PREV NEXT AOUTS CALIBRATED NO DIAG AIO Press SET gt to scroll to the first channel Continue pressing SET gt to view each of 8 channels lt SET SET gt CAL DIAG AIO XIN1 1 00 0 00 V OFF Press EDIT at any channel to to change Gain Offset Units and whether to display the channel in the Test functions OFF ON lt SET SET gt EDIT DIAG AIO XIN1 GAIN 1 00V V
109. Een 4 Figure 10 1 Viewing and Clearing Warning Messages Teledyne Analytical Instruments 219 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Table 10 1 Warning Messages Indicated Failures WARNING MESSAGE FAULT CONDITION POSSIBLE CAUSES Bad bench heater BENCH TEMP The optical bench temp is ie ae EPEE y controlling the bench heater WARNING controlled at 48 2 C Entire relay board is malfunctioning 1 C bus malfunction NOTE Box temperature typically runs 7 c warmer than ambient temperature ARNIN 3 5 Vi ee Poor blocked ventilation to the analyzer Stopped exhaust fan Ambient temperature outside of specified range CANNOT DYN D icS tion failed Measured concentration value is too high or low SPAN yoan SPAN ocr Concentration slope value to high or too low CANNOT DYN D icZ tion failed Measured concentration value is too high ZERO er ee ere Concentration offset value to high CONFIG Configuration and Calibration data Failed disk on chip INITIALIZED reset to original Factory state User erased data Concentration alarm 1 is enabled TO AER a 1 and the measured CO level is the set point Concentration alarm 2 is enabled ANING 2 and the measured COz level is the set point Failed disk on chip DATA INITIALIZED Data Storage in DAS was erased User cleared data Failed IR photo detector PHOTO TEMP PHT DRIVE is Failed sync demod board WARNING gt 4800 mVDC IR photo detect
110. F is OK o Failed multiplexer on the mother board o Failed sync demod board CO2 MEAS o Loose connector or wiring on sync demod board amp Flow of purge gas to the GFC wheel housing may have stopped CO2 REF If the value displayed is too low or constantly changing and the CO2 REF is BAD o GFC wheel stopped or rotation is too slow o Failed sync demod board IR source o Failed IR source o Failed relay board o Failed IC bus o Failed IR photo detector When the analyzer is sampling zero air and the ratio is too low o The reference cell of the GFC wheel is contaminated or leaking o The alignment between the GFC wheel and the segment sensor the M R sensor or both is incorrect MR RATIO o Failed sync demod board o Flow of purge gas to the GFC wheel housing may have stopped When the analyzer is sampling zero air and the ratio is too high o Zero air is contaminated o Failed IR photo detector PRES See Table 11 1 for SAMPLE PRES WARN SAMPLE FL_ Check for gas flow problems see Section 11 1 6 SAMPLE SAMPLE TEMP should be close to BENCH TEMP Temperatures outside of the specified range or TEMP oscillating temperatures are cause for concern BENCH TEMP Bench temp control improves instrument noise stability and drift Temperatures outside of the specified range or oscillating temperatures are cause for concern See Table 11 1 for BENCH TEMP WARNING WHEEL TEMP Wheel temp control improves instrument noise stability and drift Outside of set point or oscillatin
111. FC7000TA Carbon Dioxide Analyzer SAMPLE GAS INLET v l 3 ge oc 2 30 EXHAUST TT o Oh GAS OUTLET mM os L Zz 57 iz lt x i E a ul Ww a O Sensor Flow Control on Flow Pressure SAMPLE PRESSURE Sensor PCA SENSOR Purge Gas Flow Control NO FLOW SENSOR PURGE GAS INLET Purge Gas Pressure Control gt Figure 10 9 GFC 7000TA Internal Pneumatics with O2 Sensor Option 65A 10 2 2 Typical Sample Gas Flow Problems 10 2 2 1 Flow is Zero The unit displays a SAMPLE FLOW warning message on the front panel display or the SAMPLE FLOW test function reports a zero or very low flow rate Confirm that the sample pump is operating turning If not use an AC voltmeter to make sure that power is being supplied to the pump If no power is present at the electrical leads of the pump 1 If AC power is being supplied to the pump but it is not turning replace the pump 2 Ifthe pump is operating but the unit reports no gas flow perform a flow check as described in Section 9 3 4 3 If no independent flow meter is available e Disconnect the gas lines from both the sample inlet and the exhaust outlet on the rear panel of the instrument e Make sure that the unit is in basic SAMPLE M
112. Flashes On Off when adaptive filter is active The instrument s calibration is not enabled The analyzer is warming up and hence out of specification Fault Blinking for a fault free reading Various warning messages appear in the Param field 3 7 3 Warning Messages Because internal temperatures and other conditions may be outside be specified limits during the analyzer s warm up period the software will suppress most warning conditions for 30 minutes after power up If warning messages persist after the 30 minutes warm up period is over investigate their cause using the troubleshooting guidelines in Section 11 of this manual To view and clear warning messages press SAMPLE HVPS WARNING CO2 0 00 TEST deactivates warning messages gt 2 CAL MSG CLR SETUP SAMPLE RANGE 500 000 PPM C0O2 0 00 MSG actiyates Warning messages lt TST TST gt CAL MSG CLR SETUP KISI SE u S with SAMPLE HVPS WARNING CO2 0 00 Press CLR to clear the current TEST CAL MSG CLR SETUP eee NOTE If more than one warning is active the If the warning message persists after several attempts to clear it gt next message will take its place the message may indicate a Once the last warning has been real problem and not an artifact Make sure warning messages are cleared mh cae returns to of the warm up period not due to real problems S mode Table 3 6 lists brief descriptions of the war
113. GE PASS CLK MORE DIL only appears SETUP C 3 RANGE CONTROL MENU if the dilution ratio option has been MODE SET UNIT DIL installed EXIT ignores the new setting SETUP C 3 Toggle these buttons to set the ENTR accepts the dilution factor new setting This is the number by which the analyzer will multiply the CO2 concentrations of the gas passing SETUP C 3 DIL FACTOR 20 0 GAIN through the reaction cell ENTR The analyzer multiplies the measured gas concentrations with this dilution factor and displays the result NOTE Once the above settings have been entered the instrument needs to be recalibrated using one of the methods discussed in Section 7 Teledyne Analytical Instruments Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 9 SETUP gt PASS Password Feature The GFC 7000TA provides password protection of the calibration and setup functions to prevent unauthorized adjustments When the passwords have been enabled in the PASS menu item the system will prompt the user for a password anytime a password protected function is requested There are three levels of password protection which correspond to operator maintenance and configuration functions Each level allows access to all of the functions in the previous level Table 6 9 Password Levels PASSWORD LEVEL MENU ACCESS ALLOWED Configuration SETUP VARS DIAG To enable or disable passwords press the following key
114. ION Always use a separate calibrated flow meter capable of measuring flows in the 0 1000 cc min range to measure the gas flow rate though the analyzer DO NOT use the built in flow measurement viewable from the Front Panel of the instrument This measurement is only for detecting major flow interruptions such as clogged or plugged gas lines See Figure 3 4 for SAMPLE port location 1 Attach the Flow Meter to the sample inlet port on the rear panel Ensure that the inlet to the Flow Meter is at atmospheric f Sample flow should be 800 cc min 10 Once an accurate measurement has been recorded by the method described above adjust the analyzer s internal flow sensors See Section 6 13 8 Low flows indicate blockage somewhere in the pneumatic pathway typically a plugged sintered filter or critical flow orifice in one of the analyzer s flow control assemblies High flows indicate leaks downstream of the Flow Control Assembly 8 3 5 Cleaning the Optical Bench The GFC 7000TA sensor assembly and optical bench is complex and delicate Disassembly and cleaning is not recommended Please check with the factory before disassembling the optical bench 8 3 6 Cleaning Exterior Surfaces of the GFC 7000TA If necessary the exterior surfaces of the GFC 7000TA can be cleaned with a clean damp cloth Do not submerge any part of the instrument in water or cleaning solution Teledyne Analytical Instruments 186 Theory of
115. ISION SAMPLE displ TBRARY REVISION CFG DAS RNGE PASS CLK MORE EXIT gt ISR ay iCHIP SOFTWARE REVISION HESSEN PROTOCOL REVISION ACTIVE SPECIAL SOFTWARE OPTIONS e CPU TYPE e DATE FACTORY CONFIGURATION NEXT PREV EXIT SAVED T360 CO2 ANALYZER Press EXIT at any time to return to SETUP menu Only appears if relevant option of Feature is active 6 6 SETUP gt ACAL Automatic Calibration Instruments with one of the internal valve options installed can be set to automatically run calibration procedures and calibration checks These automatic procedures are programmed using the submenus and functions found under the ACAL menu A menu tree showing the ACAL menu s entire structure can be found in Appendix A 1 of this manual Instructions for using the ACAL feature are located in the Section 7 6 of this manual along with all other information related to calibrating the analyzer Teledyne Analytical Instruments 70 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 SETUP gt DAS Using the Data Acquisition System DAS The GFC 7000TA analyzer contains a flexible and powerful internal data acquisition system DAS that enables the analyzer to store concentration and calibration data as well as a host of diagnostic parameters The DAS of the GFC 7000TA can store up to about one million data points which can depending on individual configurations
116. Instruments 170 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer 7 5 Manual Calibration Checks with Zero Span Valves Zero and span checks using the VARIOUS zero span valve options available for the GFC 7000TA are similar to that described in Section 7 3 except that the zero and calibration operations are initiated directly and independently with dedicated buttons CALZ and CALS To perform a manual calibration check of an analyzer with a valve option installed use the following method STEP ONE Connect the sources of Zero Air and Span Gas as shown in Figures 7 3 through 7 6 STEP TWO Perform the zero span check SAMPLE RANGE 500 000PPM CO2 X XXX eral 1 tne STABIL pet lt TST TST gt CALZ SETUP SAMPLE STABIL XXX X PPM CO2 X XXX Wait until STABIL falls below 1 0 ppm This may take several minutes lt TST TST gt CAL CALZ CALS SETUP ACTION Record the CO readings presented in the upper right corner of the display ZERO CAL M CO2 X XXX lt TST TST gt ZERO EXIT SAMPLE CO2 X XXX ACTION Record the CO2 readings presented in the upper right corner of the display The value of STABIL may jump significantly Wait until STABIL falls below 1 0 ppm This may take several minutes lt TST TST gt CAL SETUP SPAN CAL M EXIT returns to the main lt TST TST gt SAMPLE display Teledyne Analytical Instru
117. Interface a special light filter typically made of a transparent plate with two reflecting surfaces or two parallel highly reflective mirrors Teledyne Analytical Instruments 47 FAQ Model GFC7000TA Carbon Dioxide Analyzer Term Description Definition GFC Gas Filter Correlation IC bus a clocked bi directional serial bus for communication between individual analyzer components IC Integrated Circuit a modern semi conductor circuit that can contain many basic components such as resistors transistors capacitors etc in a miniaturized package used in electronic assemblies IP Internet Protocol IZS Internal Zero Span LAN Local Area Network LCD Liquid Crystal Display LED Light Emitting Diode LPM Liters Per Minute MFC Mass Flow Controller M R Measure Reference MOLAR MASS the mass expressed in grams of 1 mole of a specific substance Conversely one mole is the amount of the substance needed for the molar mass to be the same number in grams as the atomic mass of that substance EXAMPLE The atomic weight of Carbon is 12 therefore the molar mass of Carbon is 12 grams Conversely one mole of carbon equals the amount of carbon atoms that weighs 12 grams Atomic weights can be found on any Periodic Table of Elements NDIR Non Dispersive Infrared NIST SRM National Institute of Standards and Technology Standard Reference Mater
118. MODEL GFC 7000TA CARBON DIOXIDE ANALYZER Operation Manual Also supports operation of GFC 7000T CO Analyzer when used in conjunction with GFC 7000T Addendum PN 07273 P N M07272 DATE 06 04 13 TELEDYNE ELECTRONIC TECHNOLOGIES Analytical Instruments 16830 Chestnut Street City of Industry CA 91748 Telephone 626 934 1500 Fax 626 961 2538 Web www teledyne ai com Teledyne Analytical Instruments Model GFC7000TA Carbon Dioxide Analyzer Copyright 2013 Teledyne Analytical Instruments All Rights Reserved No part of this manual may be reproduced transmitted transcribed stored in a retrieval system or translated into any other language or computer language in whole or in part in any form or by any means whether it be electronic mechanical magnetic optical manual or otherwise without the prior written consent of Teledyne Analytical Instruments 16830 Chestnut Street City of Industry CA 91748 Warranty This equipment is sold subject to the mutual agreement that it is warranted by us free from defects of material and of construction and that our liability shall be limited to replacing or repairing at our factory without charge except for transportation or at customer plant at our option any material or construction in which defects become apparent within one year from the date of shipment except in cases where quotations or acknowledgements provide for a shorter period Components manufactured
119. Model GFC7000TA Carbon Dioxide Analyzer includes by default the last 48 samples approximately 10 seconds of data to allow the analyzer to more quickly respond If necessary these boxcar lengths can be changed between 1 and 1000 samples but with corresponding tradeoffs in rise time and signal to noise ratio contact customer service for more information Two conditions must be simultaneously met to switch to the short filter First the instantaneous concentration must exceed the average in the long filter by a fixed amount Second the instantaneous concentration must exceed the average in the long filter by a portion or percentage of the average in the long filter 9 5 2 Calibration Slope and Offset Calibration of the analyzer is performed exclusively in software During instrument calibration see Section 7 the user enters expected values for zero and span via the front panel touchscreen and commands the instrument to make readings of calibrated sample gases for both levels The readings taken are adjusted linearized and compared to the expected values With this information the software computes values for instrument slope and offset and stores these values in memory for use in calculating the CO2 concentration of the sample gas The instrument slope and offset values recorded during the last calibration can be viewed by pressing the following touchscreen button sequence SAMPLE XX XX RANGE 50 0 MGM
120. Model GFC7000TA Carbon Dioxide Analyzer Poly bag picked up from bench 1 200V 20 000V Moving around in a chair padded 1 500V 18 000V with urethane foam 11 2 How Electro Static Charges Cause Damage Damage to components occurs when these static charges come into contact with an electronic device Current flows as the charge moves along the conductive circuitry of the device and the typically very high voltage levels of the charge overheat the delicate traces of the integrated circuits melting them or even vaporizing parts of them When examined by microscope the damage caused by electro static discharge looks a lot like tiny bomb craters littered across the landscape of the component s circuitry A quick comparison of the values in Table 12 1 with the those shown in the Table 12 2 listing device susceptibility levels shows why Semiconductor Reliability News estimates that approximately 60 of device failures are the result of damage due to electro static discharge Table 11 2 Sensitivity of Electronic Devices to Damage by ESD DAMAGE SUSCEPTIBILITY VOLTAGE DEVICE BENGE DAMAGE BEGINS CATASTROPHIC OCCURRING AT DAMAGE AT MOSFET 10 100 VMOS 30 1800 NMOS 60 100 GaAsFET 60 2000 EPROM 100 100 JFET 140 7000 SAW 150 500 Op AMP 190 2500 CMOS 200 3000 Schottky Diodes 300 2500 Film Resistors 300 3000 This Film Resistors 300 7000 ECL 500 500 SCR 500 1000 Schottky TTL 500 2500
121. NCH TEMP functions WHEEL TEMP BOX TEMP PHT DRIVE SLOPE OFFSET TEST TIME Only appears instrument is set for DUAL or AUTO reporting range modes Only appears if O Sensor Option is installed If your network is running a dynamic host configuration protocol DHCP software package the Ethernet feature will automatically configure its interface with your LAN See Section 6 11 6 2 This configuration is useful for quickly getting an instrument up and running on a network However for permanent Ethernet connections a static IP address should be used See Section 6 11 6 3 Teledyne Analytical Instruments 36 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 8 Initial Calibration Procedure The next task is to calibrate the analyzer To perform the following calibration you must have sources for zero air and span gas available for input into the sample port on the back of the analyzer See Section 3 1 3 for instructions for connecting these gas sources While it is possible to perform this procedure with any range setting we recommend that you perform this initial checkout using the 500 ppm range NOTE The following procedure assumes that the instrument does not have any of the available Zero Span Valve Options installed See Section 7 4 for instructions for calibrating instruments possessing Z S valve options 1 Set the Analog Output Range SAMPLE RANGE 500 000 PPM X XXX lt TST
122. OM is very helpful for initial setup data analysis maintenance and trouble shooting Figure 6 5 shows an example of APICOM being used to remotely configuration the instruments DAS feature Figure 6 19 shows examples of APICOM s main interface which emulates the look and functionality of the instruments actual front panel ApiComm Remote Interface Local Instrument E Conc CO2 387 499 PPM 4 TELEDYNE ADVANCED POLLUTION INSTRUMENTATION A Teledyne Technologies Company Figure 6 15 APICOM Remote Control Program Interface Teledyne Analytical Instruments 152 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer APICOM is included free of cost with the analyzer and the latest versions can also be downloaded for free at http www teledyne api com software apicom 6 15 3 Additional Communications Documentation Table 6 28 Serial Interface Documents INTERFACE TOOL DOCUMENT TITLE PART AVAILABLE ONLINE NUMBER APICOM APICOM User Manual 039450000 YES DAS Manual Detailed description of the DAS 028370000 YES These documents can be downloaded at http www teledyne api com manuals 6 15 4 Using the GFC 7000TA with a Hessen Protocol Network 6 15 4 1 General Overview of Hessen Protocol The Hessen protocol is a multidrop protocol in which several remote instruments are connected via a common communications channel to a host computer The remote instruments are regarded as slaves of th
123. Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To initialize the modem press SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X COM1 MODE 0 SET gt EDIT SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP X X COM1 BAUD RATE 19200 EXIT returns to the previous lt SET SET gt EDIT meant SETPP X X SECONDARY SETUP MENU EXIT SETUP X X SETUP X X COMMUNICATIONS MENU lt SET SET gt EXIT ID INET COM1 COM2 SETUP X X COM1 INITIALIZE MODEM lt SET SET gt INIT EXIT SETUP X X INITIALIZING MODEM lt SET SET gt INIT EXIT EXIT returns to the Communications Menu 6 15 2 7 COM Port Password Security In order to provide security for remote access of the GFC 7000TA a LOGON feature can be enabled to require a password before the instrument will accept commands This is done by turning on the SECURITY MODE Mode 4 Section 6 11 5 Once the SECURITY MODE is enabled the following items apply e A password is required before the port will respond or pass on commands e If the port is inactive for one hour it will automatically logoff which can also be achieved with the LOGOFF command e Three unsuccessful attempts to log on with an incorrect password will cause subsequent logins to be disabled for 1 hour even if the correct password is used e f not logged on the only active command
124. Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To view the above properties press SAMPLE RANGE 500 000 PPM CO2 X XXX DHCP ON lt TST TST gt CAL SETUP INST IP 0 0 0 0 SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE GATEWAY IP 0 0 0 0 SETUP X X SECONDARY SETUP MENU EDIT Key Disabled COMM SUBNET MASK 0 0 0 0 SETUP X X COMMUNICATIONS MENU SET gt ID INET SAMPLE ENTER SETUP PASS 818 lt SET SET gt 8 1 8 ENTR From this point on HOSTNAME T360 EXIT returns to COMMUNICATIONS MENU Do not alter unless directed to by Teledyne Instruments Customer Service personnel Teledyne Analytical Instruments 110 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 6 2 Manually Configuring the Ethernet Static IP Address To configure Ethernet communication manually 1 Connect a cable from the analyzer s Ethernet port to a Local Area Network LAN or Internet port 2 From the analyzer s front panel touchscreen access the Communications Menu as shown below turning DHCP mode to OFF RANGE 50 0 PPM CO2 lt IST_TST gt CAL SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT SETUP X X SECONDARY SETUP MENU COMM VARS DIAG EXIT SETUP X X COMMUNICATIONS MENU ID INET COM1 COM2 EXIT SETUP X X ENTER PASSWORD 818 8 1 8 ENTR EXIT SETUP X X DHCP ON
125. Operation Model GFC7000TA Carbon Dioxide Analyzer 9 THEORY OF OPERATION The Model GFC 7000TA Gas Filter Correlation Carbon Dioxide Analyzer is a microprocessor controlled analyzer that determines the concentration of carbon dioxide CO3 in a sample gas drawn through the instrument It requires that sample and calibration gasses be supplied at ambient atmospheric pressure in order to establish a stable gas flow through the sample chamber where the gases ability to absorb infrared radiation is measured Calibration of the instrument is performed in software and does not require physical adjustments to the instrument During calibration the microprocessor measures the current state of the IR Sensor output and various other physical parameters of the instrument and stores them in memory The microprocessor uses these calibration values the IR absorption measurements made on the sample gas along with data regarding the current temperature and pressure of the gas to calculate a final co concentration This concentration value and the original information from which it was calculated are stored in one of the unit s internal data acquisition system DAS See Sections 6 7 as well as reported to the user via a vacuum florescent display or a variety of digital and analog signal outputs 9 1 Measurement Method 9 1 1 Beer s Law The basic principle by which the analyzer works is called Beer s Law It defines the how light of a specific
126. Output Step Test This test can be used to check the accuracy and proper operation of the analog outputs The test forces all four analog output channels to produce signals ranging from 0 to 100 of the full scale range in 20 increments This test is useful to verify the operation of the data logging recording devices attached to the analyzer Teledyne Analytical Instruments 122 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To begin the Analog Output Step Test press SAMPLE RANGE 500 000 PPM CO2 X XXX SIGNAL I O lt TST TST gt CAL SETUP ENTR EXIT SETUP X X PRIMARY SETUP MENU ANALOG OUTPUT CFG DAS RNGE PASS CLK M RE EXIT ENTR EXIT SETUP X X SECONDARY SETUP MENU DIAG AOUT ANALOG OUTPUT Performs analog output step test COMM VARS DIAG ALRM EXIT 0 100 Exit Exit SETUP X X ENTER DIAG PASS 818 DIAG AOUT ANALOG OUTPUT returns to the DIAG menu 8 1 8 ENTR EXIT 02 Pressing the 0 button while performing the test will pause the test at that level Brackets will appear around the value example 20 Pressing the same button again will resume the test 6 13 4 Analog I O Configuration The analog I O functions that are available in the GFC 7000TA are Table 6 16 DIAG Analog I O Functions Sub Menu Function AOUTS CALIBRATED Shows the status of the analog output calibration YES NO and initiates a calibration of all analog output cha
127. Particulate Filter a a a a a a Aae aar aa A deae Ea EE aAa sastdeckeneicbes adhentares 196 9 29 Pneumatic SONSOFrS itis vee aga E EE de eee E AE A A de 196 9 3 Electronic Operatii sinong re deeds a aa Beep alte aa aa a a N a oe aA 197 92321 OVEIVIOW E E E E E E E E T 197 EES VAR CPU E A A A E EE ads nes 199 9 3 3 Optical Bench amp GFC Wheel sist eireiiie iain iiaeaae a adia Eia iaaa ddaa adaa TE iiaa eTEN 200 9 3 4 Synchronous Demodulator Sync Demod Assembly eeececeeeseececeeeeeeeeeneeeeeenaeeeseeeaeeeenneeeeeenaeeeeneaees 202 9 3 5 Relay BOard sisscicsise i i e norere dbovavtoes evtensesdon bel Jena repeee ebanuenerses syen Breda oe ea ees 205 9 3 6 Mother B rd aiiken at anant apat aeaaea apaatia aineart 207 9 3 7 VO Data BUS Pane ai tesa a R RT e E R a cae ean alten a 210 9 3 8 Power Supply Circuit Breakef sis isciininseiin dienei daciei iee tieidet iet ddeiet lesii iaaiiai 211 9 4 Front Panel Touchscreen Display Interface 00 2 eee ceeceeeeeeenneeeeeeeeeeesaeeeceeeaeeeseaeeeeeeaaeeeeeeaeeesneeeeenaeeeeenaeees 212 9 4 1 LVDS Transmitter Board kaiii aa a e a a a aae A 212 9 4 2 Front Panel Touchscreen Display Interface PCA ee ceeeeceeeeeeneeeeeeneeeeeeaeeeeeeaaeeeceneeeeesnaeeeenenaeeeeeeeeeees 212 9 5 Software Operatore e ee aeaee s desece ety e ia aa ea eehehdu des dabgdden ctads pede Gus ch odeaedgdtea stadecbede Vac cueseuds apts 213 9 5 4 Adaptive Filters c ccc cecssnedtaseceteteescece tee cteusecec
128. R EXIT Press PREV or NEXT Press ENTR to select to move through the the displayed Press EXIT to list of available parameter activating return to the parameters the test channel DIAG menu Table 6 13 Table 6 22 Test Parameters Available for Analog Output A4 TestcHanner zero FULLScaLE won OO e US Teledyne Analytical Instruments 140 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer This refers to the internal voltage level of the function NOT the output signal level of the Test channel itself 6 14 SETUP gt MORE gt ALRM Using the Gas Concentration Alarms The Model GFC 7000TA includes two CO concentration alarms Each alarm has a user settable limit and is associated with an opto isolated TTL relay accessible via the status output connector on the instrument s back panel See Section 6 15 1 1 If the CO concentration measured by the instrument rises above that limit the alarm s status output relay is closed The default settings for ALM1 and ALM2 are Table 6 23 CO Concentration Alarm Default Settings ALARM STATUS LIMIT SET POINT Disabled 300 ppm set points listed are for PPM Should the reporting range units of measure be changed See Section 6 7 6 the analyzer will automatically scale the set points to match the new range unit setting Note To prevent the concentration alarms from activating during span calibration operations make sure to press
129. R OA RIE Ea OA EARR 213 Figure 10 1 Viewing and Clearing Warning Messages cccceeeereeeeneeeeeeeeeaeeeeeeaeeeeeeaeeeeeeaeeeeeetneeeeseaes 219 Figure 10 2 Example of Signal I O FONCION aseesinaine tE E A AERA E RA E E 224 Figure 10 3 CPE Statis Mococa n a T A E AT O Aa 225 Figure 10 4 Sync Demod Board Status LED Locations eeesseesisriieerriesiirecesriesiinnssnernndiinnsedetnteaiinaeineanaaia 226 Figure 10 5 Relay Board Status LEDS nior riar A E AE TOE AO 226 Figure 10 6 GFC 7000TA Basic Internal Gas FOW asseeseesssseesirreserrnsssinnesennnestrnnssstnnndattanedennnaatinnsaneanaana 229 Figure 10 7 Internal Pneumatic Flow Ambient Zero Pressurized Span Valves 230 Figure 10 8 Internal Pneumatic Flow Ambient Zero Ambient Span 0 0 0 eceecceceeeeeeeeeeeeneeeeeeneeeeeeenceeeeeeaes 231 Figure 10 9 GFC 7000TA Internal Pneumatics with O2 Sensor Option 65A 0 eeeeeeeeeeeeteeeeeeenteeeeeene 232 Figure 10 10 Critical Flow Restrictor Assembly Disassembly cccceeeceeeeeee eters ee eeneeeeeseeeeeesneeeeeeeneeeeneae 251 Figure 10 11 Opening the GFC Wheel HouSing cccecceeeeeeteee seen eter eene ee ee tneee eee teeeeeeeeesesieeeeenieeeene 252 Figure 10 12 Removing the GFG Wheel t cciede de dae iia ees ANSE aAa 253 Figure 11 1 Triboelectric Charging cs cccecisiaeeetedie duane eeii iaeia tetas N AEAN dundee adc i AAEE NENANA EEN 255 Figure 11 2 Basic anti ESD Work Station oasen aiia aa idae aas
130. R ratio is only due to CO3 and not to interfering gases In this way Gas filter correlation rejects the effects of interfering gases and so that the analyzer responds only to the presence of CO To improve the signal to noise performance of the IR photo detector the GFC wheel also incorporates an optical mask that chops the IR beam into alternating pulses of light and dark at six times the frequency of the measure reference signal This limits the detection bandwidth helping to reject interfering signals from outside this bandwidth improving the signal to noise ratio The IR Signal as the Photo Detector sees it after being chopped by the GFC Wheel Screen CO REF l Figure 9 6 Chopped IR Signal Teledyne Analytical Instruments 191 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 1 4 1 Ambient CO Interference Rejection CO absorbs IR light very well So well that even the narrow volume of ambient air between the IR source and the sample chamber is enough to alter the analyzer s measured concentration of CO2 Also ambient air which averages around 350 ppm to 400 ppm will vary significantly over the course of the day The ambient CO concentration can rise as high as 1 000 ppm during the time of the day when people are present It can fluctuate 300 ppm as the photosynthesis of plant life in the nearby area increases during the day and decreases at night The basic design of the GFC 7000TA rejects most of thi
131. Ratio MR Ratio primary value used to compute CO2 concentration The value displayed is not linearized Sample Pressure The absolute pressure of the Sample gas as measured by a PRES In Hg A ah pressure sensor located inside the sample chamber Sample Flow Sample mass flow rate This is computed from the differential SAMPLE FL cc min between the pressures measured up stream and down stream of the sample critical flow orifice pressures Sample By RE Temperature SAMP TEMP C The temperature of the gas inside the sample chamber Bench 3 Temperature BENCH TEMP C Optical bench temperature Wheel WHEEL TEMP C Filter wheel temperature Temperature Box Temperature BOX TEMP C The temperature inside the analyzer chassis Oz Cell O2 CELL 5 Temperature TEMP C Oz sensor cell temperature Prigte dele The drive voltage being supplied to the thermoelectric coolers of the Temp Control PHT DRIVE mV 9 9 Supp IR photo detector by the sync demod Board Voltage Slope The sensitivity of the instrument as calculated during the last SLOPE calibration activity The SLOPE parameter is used to set the span calibration point of the analyzer Offset The overall offset of the instrument as calculated during the last OFFSET calibration activity The OFFSET parameter is used to set the zero point of the analyzer response O2 Sensor Slope O2 SLOPE O2 slope computed during zero span calibration O2 Sensor Offset O02 OFFSET O2 offset computed during zero span
132. S 232 Communication Parameters for Hessen Protocol To change the rest of the com port parameters See Section 6 11 5 To change the baud rate of the GFC 7000TA s com ports See Section 6 11 8 NOTE Make sure that the communication parameters of the host computer are also properly set Also the instrument software has a 200 ms Latency before it responds to commands issued by the host computer This latency should present no problems but you should be aware of it and not issue commands to the instrument too frequently Teledyne Analytical Instruments 154 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 15 4 3 Activating Hessen Protocol The first step in configuring the GFC 7000TA to operate over a Hessen protocol network is to activate the Hessen mode for com ports and configure the communication parameters for the port s appropriately Press SAMPLE RANGE 500 000 PPM CO2 X XXX SETUP X X COM1 QUIET MODE OFF Repeat the entire process to set up lt TST TST gt CAL SETUP Ni ENTR EXIT the COM2 port Y SETUP X X PRIMARY SETUP MENU C Continue pressing next until 7 CFG DAS RNGE PASS CLK MORE EXIT SETUP X X COM1 HESSEN PROTOCOL OFF SETUP XX SECONDARY SETUP MENU OFF COMM EXIT Select which COMM SETUP XX COMMUNICATIONS MENU port to configure we ID INET COM1 COM2 EXIT The sum of the mode IDs of the selected modes is displaye
133. SS 818 ENTR EXIT DIAG SIGNAL 1 0 NEXT ENTR EXIT Repeat Pressing NEXT until ENTR accepts the new value and DIAG PCAL ACTUAL PRESS 27 20 IN HG A returns to the previous menu ENTR EXIT EXIT ignores the new value and returns to the previous menu Adjust these values until the displayed pressure equals the pressure measured by the independent pressure meter Teledyne Analytical Instruments 138 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 13 8 Flow Calibration The flow calibration allows the user to adjust the values of the sample flow rates as they are displayed on the front panel and reported through COM ports to match the actual flow rate measured at the sample inlet This does not change the hardware measurement of the flow sensors only the software calculated values To carry out this adjustment connect an external sufficiently accurate flow meter to the sample inlet see Section 11 for more details Once the flow meter is attached and is measuring actual gas flow press Adjust these values until the displayed flow rate equals the flow rate being measured by the independent flow meter SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG ACAL DAS RNGE PASS CLK MORE EXIT Exit at any time SETUP X X SECONDARY SETUP MENU aremm
134. STABIL is below 1 0 ppm This may take several minutes ACTION SAMPLE CO2 X XXX Recordth CO concentration reading lt TST TST gt SETUP The value of ACTION STABIL may jump Supply span gas to the instrument significantly Wait until it falls below 1 0 ppm This may take several minutes ACTION SAMPLE Record the CO concentration reading lt TST TST gt The SPAN key appears during the transition from zero to span You may see both SPAN and ZERO buttons Teledyne Analytical Instruments 165 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer 7 4 Manual Calibration with Zero Span Valves There are four different zero span valve option configurations See Section 5 4 They all operate identically differing only in the method used to supply calibration gas to the Analyzer STEP ONE Connect the sources of Zero Air and Span Gas as shown below Figures 7 3 through 7 6 show the proper pneumatic connections for GFC 7000TAs with various optional internal valve sets installed Source of VENT here if input SAMPLE GAS is pressurized Removed during calibration SAMPLE Calibrated CO Gas EXHAUST at span gas concentration VENT SPAN Chassis PRESSURE SPAN IZS PURGE LINE Figure 7 3 Pneumatic Connections Ambient Zero Pressurized Span Valves Teledyne Analytical Instruments 166 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyz
135. T gt CAL SETUP Moves to the next Parameter Moves to the previous Parameter SETUP X X PRIMARY SETUP MENU NX10 Moves the view forward 10 data points channels CFG DAS RNGE PASS CLK MORE EXIT NEXT Moves to the next data point channel SETUP X X DATA ACQUISITION PREV Moves to the previous data point channel Vi EDIT EXIT PV10 Moves the view back 10 data points channels Buttons only appear when applicable SETUP X X CONC DATA AVAILABLE NEXT VIEW EXIT SETUP X X 00 00 00 NXCNC1 0 0 PPM PV10 PREV EXIT NEXT NX10 SETUP X X PNUMTC DATA AVAILABLE PREV NEXT VIEW EXIT l SETUP X X 00 00 00 SMPFLW 000 0 cc m PRM gt EXIT SETUP X X CALDAT DATA AVAILABLE PREV NEXT VIEW EXIT SETUP X X 00 00 00 NXSLP1 0 000 PRM gt PV10 PREV EXIT lt PRM SETUP X X STBZRO DATA AVAILABLE PREV NEXT VIEW EXIT SETUP X X 00 00 00 STABIL 0 000 PRM gt EXIT PV10 PREV lt PRM SETUP X X STBSPN DATA AVAILABLE EXIT SETUP X X PREV NEXT VIEW 00 00 00 DETMES 0 000 PV10 PREV lt PRM PRM gt EXIT SETUP X X TEMP DATA AVAILABLE PREV NEXT VIEW EXIT SETUP X X 00 00 00 BOXTMP 0 000 PV10 PREV lt PRM PRM gt EXIT Teledyne Analytical Instruments Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer
136. TR EXIT SETUP f RANGE CONTROL MENU MODE SET UNIT PRIMARY SETUP MENU SETUP C 3 EXIT CFG DAS RNGE PASS CLK MORE RANGE CONTROL MENU SETUP C 3 RANGE 500 0 Conc SETUP C 3 MODE SET UNIT 0 0 0 ENTR EXIT SETUP C 3 RANGE MODE SNGL SETUP C 3 RANGE CONTROL MENU EXIT x 2 returns to the main SAMPLE display SNGL DUAL AUTO ENTR EXIT MODE SET UNIT Teledyne Analytical Instruments 92 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 8 4 Dual Range Mode DUAL Selecting Dual Range mode allows the A1 and A2 outputs to be configured with different reporting ranges The analyzer software calls these two ranges low and high The low range setting corresponds with the analog output labeled A1 on the Rear Panel of the instrument The high Range Setting corresponds with the A2 output While the software names these two ranges low and high they do not have to be configured that way For example The low range can be set for a span of 0 1000 ppm while the high range is set for 0 500 ppm In DUAL range mode the RANGE test function displayed on the front panel will be replaced by two separate functions e RANGE1 The range setting for the A1 output e RANGE2 The range setting for the A2 output To set the ranges press following keystroke sequence SETUP X X RANGE MODE DUAL SNGL DUAL AUTO ENTR EXIT SAMPLE RANGE 500 000 PPM CO2 X XXX SETUP X X RANGE CONTROL M
137. This can be done automatically or manually for each channel see Section 6 13 4 2 and 6 13 4 3 e Adding a bipolar recorder offset to the signal if required Section 6 13 4 2 In its standard configuration the analyzer s outputs can be set for the following DC voltages Each range is usable from 5 to 5 of the nominal range Table 6 17 Analog Output Voltage Ranges RANGE MINIMUM OUTPUT MAXIMUM OUTPUT 0 0 1 V 5 mV 105 mV 0 1 V 0 05 V 1 05 V 0 5 V 0 25 V 5 25 V 0 10 V 0 5 V 10 5 V The default offset for all ranges is 0 VDC Teledyne Analytical Instruments 124 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer The following DC current output limits apply to the current loop modules Table 6 18 Analog Output Current Loop Range RANGE MINIMUM OUTPUT MAXIMUM OUTPUT 0 20 mA 0 mA 20 mA These are the physical limits of the current loop modules typical applications use 2 20 or 4 20 mA for the lower and upper limits Please specify desired range when ordering this option The default offset for all ranges is 0 mA Pin assignments for the output connector at the rear panel of the instrument are shown in Table 6 19 ANALOG OUT A1 A2 A3 A4 Table 6 19 Analog Output Pin Assignments PIN ANALOG VOLTAGE CURRENT OUTPUT SIGNAL SIGNAL V Out Out Ground Out V Out Out Ground Out V Out Out Ground Out V Out N
138. Using Gas Dilution Calibrator ee 27 Pneumatic Connections with Ambient Zero Ambient Span Valves OPT 50A eneee 30 Pneumatic Connections with Ambient Zero Ambient Span Valves Opt 50A and External Zero Alt Scrubber maeaea eea a dd denes amp saeeted need ial aaa a lagen 20D 30 Pneumatic Connections with Ambient Zero Pressurized Span Valves OPT 50B 008 31 Pneumatic Connections with Ambient Zero Pressurized Span Valves Opt 50B and Extemal Zero Alt SOUD OT e ae a a a aa laclendet cian habiataeedscecke laaetelandacdealeaad aeitha gee 31 Example of Pneumatic Set up for Multipoint Calibration cccecccceceeeeeeceeeeeceeeeeeeeetssneeeeees 32 O2 Sensor Calibration Set UDs mer es eea ne aa a a a label anecebawsbeesateads E ESEA 40 Current Loop Option Installed on the Motherboard cccceeeeeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeeee 52 Internal Pneumatic Flow Ambient Zero Pressurized Span Valves ccccceceeeeceeeeteeeeees 55 Internal Pneumatic Flow Ambient Zero Ambient Span cccccceeeeeeeeceeceeeeeeeteeeeenuaeeeeees 56 Multi drop LVDS PCA Seated On CPU ccceccececeeeeeeeeaececeeeeeeeceaeaeceeeeesesecececeeeeeeeeeeeeseaeees 58 Oxygen Sensor Principle Of Operation ce ceeececeeeeeeeeeeeeneeeeeeeeeeeeeaeeeseeaeeeseeneeeseeneeeeeenas 59 GFC 7000TA Internal Pneumatics with O2 Sensor Option 65 cccccceeceeeseceeeeeeeeeeeteeee 60 Front Pane
139. V NEXT ENTR EXIT DIAG FLOW CALIBRATION DIAG PREV TEST CHAN OUTPUT NEXT ENTR EXIT Any changes of signal I O settings will remain in effect only until the signal I O menu is exited Exceptions are the ozone generator override and the flow sensor calibration which remain as entered when exiting NOTE Teledyne Analytical Instruments 121 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To enter the signal I O test mode press DIAG SIGNALI O Use NEXT amp PREV to move between signal types SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP PREV NEXT JUMP ENTR EXIT DIAG 1 0 Test Signals Displayed Here Use JUMP to go directly to a specific signal location See Appendix A 4 for a complete list of available SIGNALS SETUP X X PRIMARY SETUP MENU PRNT EXIT CFG DAS RNGE PASS CLK MQRE PREV NEXT JUMP EXIT returns to the main EXAMPLE SAMPLE display lt gt SETUPXX SECONDARY SETUP MENU DIAG 1 0 JUMP TO 12 EXAMPLE 1 2 ENTR EXIT Enter 12 to Jump to COMM VARS DIAG 12 ST_CONC_VALID SAMPLE ENTER SETUP PASS 818 DIAG 1 0 ST_CONC_VALID ON Exit to return to the PREV NEXT JUMP ON PRNTEXIT gt D AG menu Pressing PRNT will send a formatted printout to the serial port and can be captured with a computer or other output device 6 13 3 Analog
140. X 1 CONC_PRECISION 3 PREV Se EDIT PRNT EXIT Continue to press NEXT until SETUP X X 4 CLOCK_ADJ 0 Sec Day PREV JUMP EDI PRNT EXIT SETUP X CLOCK_ADJ 0 Sec Day 0 0 ENTR EXIT Enter sign and number of seconds per day the dock gains or loses SETUP X X 4 CLOCK_ADJ 0 Sec Day PREV NEXT JUMP EDIT PRNT 3x EXIT retums to the main SAMPLE display Teledyne Analytical Instruments 100 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 SETUP gt MORE gt COMM Using the Analyzer s Communication Ports The GFC 7000TA is equipped with an Ethernet port a USB port and two serial communication COMM ports located on the rear panel Figure 3 2 Both com ports operate similarly and give the user the ability to communicate with issue commands to and receive data from the analyzer through an external computer system or terminal By default both com ports operate on the RS 232 protocol e The RS232 port used as COM1 can also be configured to operate in single or RS 232 multidrop mode option 62 See Section 5 5 2 and 6 11 7 e The COM2 port can be configured for standard RS 232 operation or half duplex RS 485 communication For RS 485 communication please contact the factory A code activated switch CAS can also be used on either port to connect typically between 2 and 16 send receive instruments host computer s printers data loggers
141. XX lt TST TST gt CAL UP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT EXIT returns to the previous SETUP X X SECONDARY SETUP MENU menu COMM EXIT Select which COMM SETUP X X COMMUNIC ATIONS MENU port to configure ID INET COMI COM2 a The sum of the mode IDs of the selected modes is displayed here SET gt EDIT N SETUP X X COM1 QUIET MODE OFF NEXT C Continue pressing next until D SETUP X X COM1 HESSEN PROTOCOL OFF ENTR Use PREV and NEXT to PREV NEXT OFF ENTR EXIT move between available modes pence rep ed by SETUP X X COM1 HESSEN PROTOCOL ON ENTR accepts the new toggling the ON OFF settings button EXIT ignores the new PREV NEXT ENTR EX settings Teledyne Analytical Instruments 107 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 6 Remote Access via the Ethernet When using the Ethernet interface the analyzer can be connected to any standard 10BaseT or 100Base T Ethernet network via low cost network hubs switches or routers The interface operates as a standard TCP IP device on a user selectable port which otherwise defaults to port 3000 This allows a remote computer to connect through the internet to the analyzer using APICOM terminal emulators or other programs The Ethernet connector has two LEDs that are on the connector itself indicating it
142. a Calibrated Bottle use the exact concentration value printed on the bottle Teledyne Analytical Instruments 163 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer STEP THREE Perform the Zero Span Calibration Procedure SAMPLE RANGE 500 000 PPM CO2 XXX X Set the Display to show the STABIL test function lt TST TST gt SETUP This function calculates the stability of the CO2 measurement SAMPLE STABIL XXX X PPM CO2 XXX X lt TST TST gt SETUP ACTION Allow zero gas to enter the sample port at the rear of the instrument Wait until STABIL falls below 1 0 ppm This may take several minutes M P CAL STABIL XXX X PPM lt TST TST gt CAL M P CAL STABIL XXX X PPM CO2 XXX X lt TST TST gt ZERO CONC EXIT is Press ENTR to changes the M P CAL STABIL XXX X PPM CO2 XXX X OFFSET amp SLOPE values for the CO measurements lt TST TST gt ENTR CONC EXIT Press EXIT to leave the calibration unchanged and return to the previous menu ACTION Allow span gas to enter the sample port at the rear of the instrument The value of STABIL may jump significantly Wait until it falls back below 1 0 ppm This may take several minutes M P CAL STABIL XXX X PPM CO2 XXX X The SPAN button appears If either the ZERO or lt TST SPAN buttons fail to appear see Section 11 for troubleshooting tips TST gt EXIT Pres
143. a generated by the analyzer s internal data acquisition system DAS See Section 6 7 9 3 2 2 Flash Chip This non volatile embedded flash chip includes 2MB of storage for calibration data as well as a backup of the analyzer configuration Storing these key data on a separate less heavily accessed chip significantly decreases the chance of data corruption In the unlikely event that the flash chip should fail the analyzer will continue to operate with just the DOM However all configuration information will be lost requiring that the unit be recalibrated Teledyne Analytical Instruments 199 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 3 3 Optical Bench amp GFC Wheel Electronically the Model GFC 7000TA s optical bench GFC wheel and associated components do more than simply measure the amount of CO present in the sample chamber A variety of other critical functions are performed here as well 9 3 3 1 Temperature Control Because the temperature of a gas affects its density and therefore the amount of light absorbed by that gas it is important to reduce the effect of fluctuations in ambient temperature on the Model GFC 7000TA s measurement of CO To accomplish this the temperature of both the sample chamber and the GFC Wheel are maintained at constant temperatures above their normal operating ranges Bench Temperature To minimize the effects of ambient temperature variations on the sample measure
144. able Names VARS Revision B 3 ALLOWED VALUES Changes the internal data acquisition system DAS hold off time which is the duration when data are not stored in the DAS because the software considers the data to be eee 0 DAS_HOLD_OFF questionable That is the case during warm up or just after a z the instrument returns from one of its calibration modes to Default 15 min SAMPLE mode DAS_HOLD_OFF can be disabled entirely j in each DAS channel Allows the user to set the number of significant digits to the AUTO 1 2 3 4 CONC_PRECISION right of the decimal point display of concentration and Fe Tay wy Default AUTO stability values Selects which gas measurement is displayed when the STABIL 1 EJ STABI GAS test function is selected CO2 amp O2 VARIABLE DESCRIPTION Dynamic zero automatically adjusts offset and slope of the DYN_ZERO CO response when performing a zero point calibration ON OFF during an AutoCal Section 7 Dynamic span automatically adjusts slope and slope of the CO response when performing a zero point calibration during an AutoCal Section 7 DYN_SPAN ON OFF Note that the DYN_ZERO and DYN_SPAN features are not allowed for applications requiring EPA equivalency Adjusts the speed of the analyzer s clock Choose the CLOCK_ADJ sign if the clock is too slow choose the sign if the clock is 60 to 60 s day too fast 10 option is only available in analyzers with O2 sensor options installed
145. ae Faulty Connectors Wiring to from Relay Board aitau a OFF Failed Faulty 5 VDC Power Supply PS1 DC VOLTAGE TEST STATUS LED s POINTS n LIN Figure 10 5 Relay Board Status LEDs Teledyne Analytical Instruments 226 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Table 10 5 Relay Board Status LED Failure Indications LED FUNCTION SIGNAL I O PARAMETER ACTIVATED BY VIEW RESULT DIAGNOSTIC TECHNIQUE D2 Yellow WHEEL HEATER WHEEL_HEATER WHEEL_TEMP Voltage displayed should change If not Failed Heater Faulty Temperature Sensor Failed AC Relay Faulty Connectors Wiring D3 Yellow BENCH HEATER BENCH_HEATER BENCH_TEMP Voltage displayed should change If not Failed Heater Faulty Temperature Sensor Failed AC Relay Faulty Connectors Wiring D4 Yellow SPARE N A N A N A D5 Green SAMPLE CAL GAS VALVE OPTION CAL_VALVE N A Sample Cal Valve should audibly change states If not Failed Valve Failed Relay Drive IC on Relay Board Failed Relay Board Faulty 12 VDC Supply PS2 Faulty Connectors Wiring D6 Green ZERO SPAN GAS VALVE OPTION SPAN_VALVE N A Zero Span Valve should audibly change states If not Failed Valve Failed Relay Drive IC on Relay Board Failed Relay Board Faulty 12 VDC Supply PS2 Faulty Connectors Wiring D7 Green SHUTOFF VALVE OPTION SHUTOFF_VALVE N A Shuto
146. aed ee en ee etic cline e e aai 1 2 SPECIFICATIONS AND APPROVALS 6c joes cociescccssstcccccccniscsctiesccesiceescscesteed cates ceuwvesnesectbresncesucteedcntace evsttectaneeeedecies 5 2 1 SPSCHICATONS os osj ce bisdec aaa A tbs E diel E A a R E a A EEEE EA A TA OA NEEE AAT EEES 5 2 2 GCE Mark Compliance iy ienn hoi e ea a tea ated aaa a aa e e eaaa ee a aan iaaa 7 32GETTING STARTED reae aae a aaa e EO aa cdiive colaviwedensens saces cldearantevees feel svandevoctSeveastaeg asees 9 3 1 Unpacking and Initial Set UP isnnesa sedanina nae e E E A ETE E E E E 9 3 2 Front Panel krna a ni ten ely bk a eae E N a RE A N bee ae 11 SRS Rear Panel A E S AE A E E E E TT 15 3 4 Internal Layout sni s i a a a aa a e eaa Aa 17 3 5 cle ale Keelan eola REEE ETA T AAE 19 3 5 1 Power COMMECTHION ssiri eiaa A E T E dated viv A denen eee 20 3 5 2 Connecting Analog Inputs Option 64 ee ee eeneeeeeeeeeeeeeeeeeeeaeeeeeneeeeesaeeeeeeaaeeeeneeeeeenaeeeeenaeeeenneeeeneaa 20 3 5 3 Connecting Analog Outputs s ctccc ssscccutacesxseet ee dentotceubatteesscntevesvhostesauaterdscubestyecessdataarhestenestdhebbeeusnctneece 21 3 5 4 Connecting the Status Outputs risiet egee t d aa dapa aa e ERa A aE Eaa ieii enee 23 3 5 5 Connecting the Control INDUts siiin ai iadaa aiai ai daan diaa diaaa 24 3 5 6 Connecting the Communications Interfaces 0 eee eeeceeeeeeeeeeeneeeeeeeeeeeeeaeeeseeaeeeenneeeeesaeeeeneeeeenneeeeneaa 25 3 6 Prieumatic Connections esiin e bend gnc
147. age Figure 6 5 APICOM User Interface for DAS Configuration Once a DAS configuration is edited which can be done offline and without interrupting DAS data collection it is conveniently uploaded to the instrument and can be stored on a computer for later review alteration or documentation and archival Refer to the APICOM manual for details on these procedures The APICOM user manual Teledyne Instruments part number 039450000 is included in the APICOM installation file which can be downloaded at http www teledyne api com software apicom It is recommended that you start by downloading the default DAS configuration getting familiar with its command structure and syntax conventions and then altering a copy of the original file offline before uploading the new configuration CAUTION Whereas the editing adding and deleting of DAS channels and parameters of one channel through the front panel touchscreen can be done without affecting the other channels uploading an DAS configuration script to the analyzer through its communication ports will erase all data parameters and channels by replacing them with the new DAS configuration Backup of data and the original DAS configuration is advised before attempting any DAS changes Teledyne Analytical Instruments 88 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 8 SETUP gt RNGE Analog Output Reporting Range Configuration The analyzer has three active
148. ake several minutes Press ENTR to changes the OFFSET amp SLOPE values for the CO measurements Press EXIT to leave the calibration unchanged and return to the previous menu The value of STABIL may jump significantly Wait until it falls back below 1 0 ppm This may take several minutes Press ENTR to change the OFFSET amp SLOPE values for the CO measurements Press EXIT to leave the calibration unchanged and return to the previous menu EXIT returns to the main SAMPLE display I Teledyne Analytical Instruments 39 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 8 1 Initial O Sensor Calibration Procedure If your instrument has an O sensor option installed that should be calibrated as well 3 8 1 1 O2 Calibration Setup The pneumatic connections for calibrating are as follows Source of VENT here if input SAMPLE GAS is pressurized Removed during e As a calibration i Calibrated N2 at HIGH Span Concentration Manual Control Valve Calibrated O at 20 8 Span Concentration Figure 3 16 O2 Sensor Calibration Set Up O2 SENSOR ZERO GAS Teledyne Instruments recommends using pure Nz when calibration the zero point of your O sensor option O2 SENSOR SPAN GAS Teledyne Instruments recommends using 21 Oz in Nz when calibration the span point of your O sensor option 3 8 1 2 O2 Calibration Method STEP 1 SET O SPAN GAS
149. ally No Annually or after any Maintenance or Repair Yes if As needed cleaned Only if cover remv d As needed Teledyne Analytical Instruments DATE PERFORMED MANUAL 181 Maintenance Model GFC7000TA Carbon Dioxide Analyzer Table 8 2 GFC 7000TA Test Function Record OPERATING FUNCTION ROBE STABILITY ERO CAL CO2 MEAS ZERO CAL Zero CAL MR RATIO SPAN CAL PRES SAMPLE SAMPLE After PHT DRIVE Warm up SLOPE SPAN CAL OFFSET ZERO CAL Teledyne Analytical Instruments 182 Maintenance Model GFC7000TA Carbon Dioxide Analyzer 8 2 Predicting Failures Using the Test Functions The Test Functions can be used to predict failures by looking at how their values change over time Initially it may be useful to compare the state of these Test Functions to the values recorded on the printed record of the final calibration performed on your instrument at the factory p n 04307 Table 9 3 can be used as a basis for taking action as these values change with time The internal data acquisition system DAS is a convenient way to record and track these changes Use APICOM to download and review this data from a remote location Table 8 3 Predictive uses for Test Functions FUNCTION CONDITION BEHAVIOR INTERPRETATION 5 Pneumatic Leaks instrument amp sample system STABILITY Zero Cal Increasing es Detector deteriorating Source Aging CO2 MEAS Zer
150. an be set by the user See Section 6 13 9 to output several of the test functions accessible through the lt TST TST gt keys of the units sample display Teledyne Analytical Instruments 89 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 8 1 Physical Range versus Analog Output Reporting Ranges Functionally the Gas Filter Correlation CO Analyzer has one hardware Physical Range that is capable of determining CO2 concentrations between 50 ppm and 2 000 ppm This architecture improves reliability and accuracy by avoiding the need for extra switchable gain amplification circuitry Once properly calibrated the analyzer s front panel will accurately report concentrations along the entire span of its 50 ppm and 2 000 ppm physical range Because most applications use only a small part of the analyzer s physical range the width of the Model GFC 7000TA s physical range can create data resolution problems for most analog recording devices For example in an application where the expected concentration of CO is typically less than 500 ppm the full scale of expected values is only 25 of the instrument s 2 000 ppm physical range Unmodified the corresponding output signal would also be recorded across only 25 of the range of the recording device The GFC 7000TA solves this problem by allowing the user to select a scaled reporting range for the analog outputs that only includes that portion of the physical range releva
151. analyzer GND DTE mode GND DCE mode Figure 6 7 Rear Panel Connector Pin Outs for COM1 amp COM2 in RS 232 Mode The signals from these two connectors are routed from the motherboard via a wiring harness to two 10 pin connectors on the CPU card J11 and J12 Teledyne Analytical Instruments 103 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer PLKCDCOOOOOOOOOGOODO00 e200000000000000000000 DCD TXD GND RTS RI Figure 6 8 CPU Connector Pin Outs for COM1 amp COM2 in RS 232 Mode Teledyne Instruments offers two mating cables one of which should be applicable for your use e Part number WRO000077 a DB 9 female to DB 9 female cable 6 feet long Allows connection of COM 1 with the serial port of most personal computers Also available as Option 60 See Section 5 5 1 e Part number WRO000024 a DB 9 female to DB 25 male cable Allows connection to the most common styles of modems e g Hayes compatible and code activated switches Both cables are configured with straight through wiring and should require no additional adapters To assist in properly connecting the serial ports to either a computer or a modem there are activity indicators just above the RS 232 port Once a cable is connected between the analyzer and a computer or modem both the red and green LEDs should be on If the lights for COM 1 are not lit use small switch on the
152. and flow check the instrument described in Section 9 3 Detector failure caused by failure of the hermetic seal or over temperature due to poor heat sinking of the detector can to the optical bench In addition to increased noise due to poor signal to noise ratio another indicator of detector failure is a drop in the signal levels of the CO MEASURE signal and CO REFERENCE signal Sync Demod Board failure There are many delicate high impedance parts on this board Check the CO2 MEAS and CO2 REF Test Functions via the Front Panel Display The detector cooler control circuit can fail for reasons similar to the detector itself failing Symptoms would be a change in MR RATIO Test Function when zero air is being sampled Also check the SIGNAL I O parameter PHT DRIVE After warm up and at 25 C ambient if PHT DRIVE lt 4800 mV the cooler is working properly If PHT DRIVE is gt 4800 mV there is a malfunction The 5 and 15 VDC voltages in the GFC 7000TA are provided by switching power supplies Switch mode supplies create DC outputs by switching the input AC waveform at high frequencies As the components in the switcher age and degrade the main problem observed is increased noise on the DC outputs If a noisy switcher power supply is suspected attach an oscilloscope to the DC output test points located on the top right hand edge of the Relay board Look for short period spikes gt 100 mV p p on the DC output Teledyne Analytica
153. ani re que celle pour laquelle il a t pr vu l instrument pourrait se comporter de fa on impr visible et entrainer des cons quences dangereuses NE JAMAIS utiliser un analyseur de gaz pour chantillonner des gaz combustibles Teledyne Analytical Instruments vi Safety Messages Model GFC7000TA Carbon Dioxide Analyzer This page intentionally left blank Teledyne Analytical Instruments vii Manual Information Model GFC7000TA Carbon Dioxide Analyzer ABOUT THIS MANUAL This manual PN 07272 provides operation instructions for the GFC 7000TA Analyzer and supports operation of the Model GFC 7000T when used in conjunction with the GFC 7000T Addendum PN 07273 This manual is comprised of multiple documents as listed below Part No Rev Name Description 07272 A GFC 7000TA Carbon Dioxide Analyzer Operation Manual 05233 H Menu trees and software documentation inserted as Appendix A of this manual 06879 1 4 2011 Spare Parts List located in Appendix B this manual 04411 M Recommended Spare Parts Stocking Levels 05235 C Repair Request Questionnaire inserted as Appendix C of this manual Interconnects and Schematics included in Appendix D of this manual 0691201 B Interconnect Wire List located in Appendix D of this manual 069121 B Interconnect Wiring Diagram located in Appendix D of this manual 03297 K PCA 03296 IR Photodetector Preamp and Sync
154. annels of your analyzer it was shipped with small plugs inserted into each of the pneumatic fittings on the back panel Remove these plugs before operating the analyzer It is recommended that they be stored for future use moving storing or shipping the analyzer Figure 3 4 illustrates the basic configuration for gas supply and exhaust lines to the Model GFC 7000TA Analyzer Figure 3 5 illustrates the internal gas flow of the instrument in its basic configuration Please refer to Figure 3 2 for pneumatic connections at the rear panel and Table 3 2 for description NOTE Sample and calibration gases should only come into contact with PTFE Teflon FEP glass stainless steel or brass Table 3 7 Rear Panel Pneumatic Connections REAR PANEL LABEL FUNCTION Connect a gas line from the source of sample gas here SAMPLE Calibration gasses are also inlet here on units without zero span valve or IZS options installed EXHAUST Connect an exhaust gas line of not more than 10 meters long here PRESSURE SPAN On units with zero span valve options installed connect a gas line to the source of calibrated span gas here Span gas vent outlet for units with zero span valve options installed VENT SPAN Connect an exhaust gas line of not more than 10 meters long here Internal zero air scrubber IZS On units with zero span valve options installed but no internal zero air scrubber attach a gas line to the source
155. antly steady lit or steady off 10 5 4 Touchscreen Interface Verify the functioning of the touchscreen by observing the display when pressing a touchscreen control button Assuming that there are no wiring problems and that the DC power supplies are operating properly if pressing a control button on the display does not change the display any of the following may be the problem e The touchscreen controller may be malfunctioning e The internal USB bus may be malfunctioning You can verify this failure by logging on to the instrument using APICOM or a terminal program to any of the communications ports If the analyzer responds to remote commands and the display changes accordingly the touchscreen interface may be faulty 10 5 5 LCD Display Module Verify the functioning of the front panel display by observing it when power is applied to the instrument Assuming that there are no wiring problems and that the DC power supplies are operating properly the display screen should light and show the splash screen with logo and other indications of its state as the CPU goes through its initialization process Teledyne Analytical Instruments 242 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 5 6 Relay Board The relay board PCA 04135 can be most easily checked by observing the condition of the its status LEDs on the relay board as described in Section 10 1 4 3 and the associated output when toggled on and off thr
156. arefully Each safety message is associated with a safety alert symbol and are placed throughout this manual the safety symbols are also located inside the instrument It is imperative that you pay close attention to these messages the descriptions of which are as follows WARNING Electrical Shock Hazard HAZARD Strong oxidizer GENERAL WARNING CAUTION Read the accompanying message for specific information CAUTION Hot Surface Warning Do Not Touch Touching some parts of the instrument without protection or proper tools could result in damage to the part s and or the instrument Technician Symbol All operations marked with this symbol are to be performed by qualified maintenance personnel only Electrical Ground This symbol inside the instrument marks the central safety grounding point for the instrument Obr PEEPS CAUTION This instrument should only be used for the purpose and in the manner described in this manual If you use this instrument in a manner other than that for which it was intended unpredictable behavior could ensue with possible hazardous consequences NEVER use any gas analyzer to sample combustible gas es gt Note Technical Assistance regarding the use and maintenance of the GFC7001TA or any other Teledyne product can be obtained by contacting Teledyne Customer Service Department Phone 888 789 8168 Email ask_tai teledyne com or by accessing various service options on ou
157. as is received from a pressurized manifold a vent must be placed as shown to equalize the sample gas with ambient atmospheric pressure before it enters the analyzer This vent line must be e At least 0 2m long e No more than 2m long and vented outside the shelter or immediate area surrounding the instrument 8 Attach sources of zero air and span gas see Figures 3 3 through 3 8 inclusive e Span Gas is a gas specifically mixed to match the chemical composition of the type of gas being measured at near full scale of the desired measurement range In the case of CO2 measurements made with the Teledyne Instruments Model GFC 7000TA Analyzer it is recommended that you use a gas calibrated to have a CO content equaling 80 of the range of compositions being measured EXAMPLE If the application is to measure between 0 ppm and 500 ppm an appropriate Span Gas would be 400 ppm If the application is to measure between 0 ppm and 100 ppm an appropriate Span Gas would be 80 ppm e Span Gas can be purchased in pressurized canisters or created using Dynamic Dilution Calibrator such as the Teledyne Instruments Model T700 and a source of dried air scrubbed of CO such as a bottle of No e Zero Air is similar in chemical composition to the Earth s atmosphere but scrubbed of all components that might affect the analyzer s readings In the case of CO2 measurements this means less than 0 1 ppm of CO and Water Vapor when dew point lt 1
158. as previously described in Section 7 2 The other range may be calibrated by starting over from the main SAMPLE display Teledyne Analytical Instruments 172 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer 7 5 2 Use of Zero Span Valves with Remote Contact Closure Contact closures for controlling calibration are located on the rear panel CONTROL IN connector Instructions for setup and use of these contacts are found in Section 6 15 1 2 When the contacts are closed for at least 5 seconds the instrument switches into zero or span mode The remote calibration contact closures may be activated in any order It is recommended that contact closures remain closed for at least 10 minutes to establish a reliable reading The instrument will stay in the selected mode for as long as the contacts remain closed If calibration is enabled the GFC 7000TA will re calibrate when the contact is opened then go into SAMPLE mode If calibration is disabled the instrument will return to SAMPLE mode leaving the calibration unchanged 7 6 Automatic Zero Span Cal Check AutoCal The AutoCal system allows unattended periodic operation of the ZERO SPAN valve options by using the GFC 7000TA s internal time of day clock AutoCal operates by executing SEQUENCES programmed by the user to initiate the various calibration modes of the analyzer and open and close valves appropriately It is possible to program and run up to 3 separate sequences S
159. ating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 9 COM Port Testing The serial ports can be tested for correct connection and output in the com menu This test sends a string of 256 w characters to the selected COM port While the test is running the red LED on the rear panel of the analyzer should flicker To initiate the test press the following touchscreen button sequence SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP X X SECONDARY SETUP MENU COMM VARS SETUP X X COMMUNICATIONS MENU Select which COM port to test ID INET COM1 COM2 EXIT SETUP X X COM1 MODE 0 SET gt EDIT SETUP X X COM1 BAUD RATE 19200 lt SET SET gt EDIT SETUP X X COM1 TEST PORT lt SET ST SETUP X X TRANSMITTING TO COM1 EXIT returns to COMM menu lt SET TEST pe Test runs automatically S Teledyne Analytical Instruments 117 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 12 SETUP gt MORE gt VARS Internal Variables VARS The GFC 7000TA has several user adjustable software variables which define certain operational parameters Usually these variables are automatically set by the instrument s firmware but can be manually re defined using the VARS menu Table 6 14 lists all variables that are available within the 818 password protected level Table 6 14 Vari
160. ature Sensor The source of this signal is a thermistor located inside the sample chamber of the Optical Bench It measures the temperature of the sample gas in the chamber This data is used to during the calculation of the CO concentration value Bench Temperature Sensor This thermistor attached to the sample chamber housing reports the current temperature of the chamber housing to the CPU as part of the bench heater control loop Wheel Temperature Sensor This thermistor attached to the heat sync on the GFC wheel motor assembly reports the current temperature of the wheel motor assembly to the CPU as part of the Wheel Heater control loop Teledyne Analytical Instruments 208 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Box Temperature Sensor A thermistor is attached to the motherboard It measures the analyzer s inside temperature This information is stored by the CPU and can be viewed by the user for troubleshooting purposes via the front panel display See Section 11 1 2 9 3 6 4 Analog Outputs The analyzer comes equipped with four analog outputs A1 A2 A3 and A4 In its standard configuration the analyzer comes with all four of these channels set up to output a DC voltage However 4 20mA current loop drivers can be purchased for the first three of these outputs A2 A2 amp A3 A2 and A1 Output The first two A2 and A1 are normally set up to operate in parallel so that the same data can be
161. ave an adequate supply of anti ESD bags or containers available Teledyne Instruments Customer Service department will supply them Follow the instructions listed above for working at the instrument rack and workstation j Teledyne Analytical Instruments 261 ESD Model GFC7000TA Carbon Dioxide Analyzer This page intentionally left blank j Teledyne Analytical Instruments 262
162. bert law This is accomplished by using a Gas Filter Wheel which alternately allows a high energy infrared light source to pass through a CO filled chamber and a chamber with no CO present The light then travels through the sample cell which has a folded path The energy loss through the sample cell is compared with the zero reference signal provided by the gas filter to produce an output proportional to concentration with little effect from interfering gases within the sample A nitrogen purge system is provided for the GFC wheel assembly to eliminate the effects of ambient COs if necessary This design produces superior zero and span stability and a high signal to noise ratio allowing excellent sensitivity Multi tasking software gives real time indication of numerous operating parameters and provides automatic alarms if diagnostic limits are exceeded 1 1 Features e Ranges GFC 7000TA 0 2 ppm to 0 2000 ppm GFC 7000TM 0 4 ppm to 0 4000 ppm user selectable e Gas Filter Wheel for CO specific measurement e LCD Graphical User Interface with capacitive touch screen e Multi tasking software allows viewing of test variables during operation e Continuous self checking with alarms e Bi directional RS 232 and 10 100Base T Ethernet optional USB and RS 485 ports for remote operation e Front panel USB ports for peripheral devices e Digital status outputs to indicate instrument operating condition e Adaptive signal filtering to optimize
163. bleshooting Section 11 These values should not be significantly different from the values recorded on the Teledyne Instruments Final Test and Validation Data sheet that was shipped with your instrument If they are refer to the Teledyne Analytical Instruments 176 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer The default DAS configuration records all calibration values in channel CALDAT as well as all calibration check zero and span values in its internal memory Up to 200 data points are stored for up 4 years of data on weekly calibration checks and a lifetime history of monthly calibrations Review these data to see if the zero and span responses change over time These channels also store the STABIL value standard deviation of CO concentration to evaluate if the analyzer response has properly leveled off during the calibration procedure Finally the CALDAT channel also stores the converter efficiency for review and documentation If your instrument has an O sensor option installed that should be calibrated as well Teledyne Analytical Instruments 177 We EVEZ WEEN E Bee ESP ED ee WOE Pe Bw V Be ie ALO OE V O be WI Le A Predictive diagnostic functions including data acquisition records failure warnings and test functions built into the analyzer allow the user to determine when repairs are necessary without performing painstaking preventative maintenance procedures There are however a
164. cadelitas di dde aiaa ea geeedveddeds tu aaia a E Dia TEN 213 9 5 2 Calibration Slope and Of Sete cs erisir kan anea eE EA EA ANAE aED E aT ET 214 9 5 3 Measurement Algorithms i iiir pivnita ipia arai ea iieiea eriei A 214 9 5 4 Temperature and Pressure Compensation 0 00 eecccceeeseeeeeeeeeceenneeeceeeeeeeseeeeeseaeeeeeeeeeesneeeeeseeeeeeeeees 215 9 5 5 Internal Data Acquisition System DAS ccc eeeeneeeeereeeeeeeeeeeeeaeeeceeeaeeesaeeeeeeaaeeeeeeeaeeesneeeennaeeeenenaeees 215 10 TROUBLESHOOTING amp REPAIR PROCEDURES csceceseeesseeeseeeeeeeeeneeeeeeneenseesnseaeaseesaseaeaseeeaseaeaseeeaseeenentas 217 10 1 General Troubleshooting Hints 1c 2 2 c0 cces est ectectan ceeeecencetvecun deny esceeseestenessusctnastootenuesteesbe ced sdeeunedheecdnsepeectnedoos 217 10 1 1 Interpreting WARNING Messages eeeccceeeeseeeceeeeeeeeneeeceeeaeeeeeaeeeeesaaeeeeeneaeeeesieeeeeenaeeeseneeeeneeeeneaaes 218 10 1 2 Fault Diagnosis with TEST Functions cccccccecceeeeecee cece eect eeceaeaeee tees seceaeaeeeeeeeseccaeeeeeeeseeeeeeeeeeeeeea 221 10 1 3 Using the Diagnostic Signal I O FUNCTION oe ee een ee ceeneeeeeneeeeeeaaeeeseneaeeesaeeeeeeaeeeseneeeeneeeeneaaes 223 10 1 4 Internal Electronic Status LEDS 3 25 c escccccd scgevi ene e ea i oud aboees dune eaae 224 10 2 Gas Flow Problems eeina aasre anaia airna encebea nea e EaR ea atakara nena iaia fea E pinon r niatkan 228 10 2 1 GFC 7000TA Internal Gas Flow Diagrams
165. calibration Test channel TEST mV mA Displays the signal level of the TEST analog output channel Only output signal i appears when the TEST channel has been activated Current Time TIME 7 The current time This is used to create a time stamp on DAS readings and by the AUTOCAL feature to trigger calibration events l Only appears when the instrument s reporting range mode is set for DUAL or AUTO Only appears when the optional O2 sensor is installed Teledyne Analytical Instruments 65 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To view the TEST Functions press SAMPLE RANGE 500 000 PP CO2 XXX X lt TST TST gt CAL SETUP RANGE RANGE1 Toggle lt TST TST gt buttons RANGE2 to scroll through list of O2 RANGE STABIL MEAS REF MR RATIO a ee rap i Table 6 2 for definitions of SAMP TEMP these test BENCH TEMP functions WHEEL TEMP BOX TEMP 1 Only appears instrument is set PHT DRIVE for DUAL or AUTO reporting SLOPE range modes OFFSET Only appears if Op Sensor TEST Option is installed TIME Figure 6 2 Viewing TEST Functions NOTE A value of XXXX displayed for any of the TEST functions indicates an out of range reading or the analyzer s inability to calculate it All pressure measurements are represented in terms of absolute pressure Absolute atmospheric pressure is 29 92 in Hg A at sea level It decreases about 1 in Hg per 300 m gain in altitu
166. ccceccececeeeeeeeeceeceeeeeeeeeeteesaeeeeeeeeeees 54 Table 5 2 Ambient Zero Ambient Span Valve Operating States cccceeeeeecee cece ee eeeeeceeaeeeeeeeeeeecnaeeeeeeeeeee 55 Table 6 1 Analyzer Operating MOdeS 2c 2 titeectnedaas cesedeessanccaaseepeceaateeeedaganeseaecaeeenedeceenmeddedeededesssantecueeededegeetes 64 TLable 6 2 TestiFunctions Defined ic 2 sieeesicuti tees tinteans AA deca TAA E A A 65 Table 6 3 Eisto Warning Messages serrio tiini on ooa TETA NNE feces ETR EREA E RT AO 67 Table 6 4 Primary Setup Mode Features and Functions 0 cccccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeseeaeeeseeaeeeetnaaeeesennaees 69 Table 6 5 Secondary Setup Mode Features and Functions ceeececceeeeeeeeeeeeeeeseeeeeeeeeeeeeeeeeaeeeeeeaeeeeeeaees 69 Table 6 6 Front Panel Sample LED Status Indicators for DAS nsssesnnnnnneneseerennrenssrrttrrrrnrstnsrtrrnrnnseesrrrnn rn 71 Table 6 7 DAS Data Channel Properties ccccccceceeeceecee cece cece eeeeceaeceeeeeeeeeceaeaeceeeeeseseccaeaeeeeeeesetecsieaeeeeeeeeees 72 Table 6 8 DAS Data Parameter Functions eertse rin nseri aE raK ERANA EE AA EEE ERA AEAEE Aa EAA ATAR 73 Table 6 9 Password Levels 21 ccccscuigiediengecesncele dh tenini enen KNT AA stadiecentnnededh andes aisha eden stesdetsendiidh E A N NR rene 97 Table 6 10 Com Port Communication MOdes cccccecccceeeeeeeenneeeeeenneeeeeeneeeeseeaeeeseeaeeeseenaeeeseeieeeeeeneeeeeeaas 106 Table 6
167. ccceceeeeeeeeceeaeceeeeeeeceeeaeaececeeeeeseseaaaaeeeeeseeeeesinaeeeeees 242 Relay Board Control Devige teianei enen deleted weedeat peas edtedy lected vittinndehecieees tenths ees AIEEE 243 Opto Pickup Board Nominal Output Frequencies cceccececccceeeeeeeeeeaeceeeeeeeesesseneeeeeeeeeseeseaeees 244 Analog Output Test Function Nominal Values Voltage Outputs cece eeeeeeeeeeeeeeeeeeeeenteeeeeeaas 247 Analog Output Test Function Nominal Values Current Outputs 0 0 cceccececceceeeeeeeeeeeneeeeeeeees 247 Status Outputs Check rieten eea aaa a anaa aaae aa aaa a aa aa e a aaae aa aaa aceeetl 248 Static Generation Voltages for Typical Activities eeeeeeeeeeeeeeeereeeerresetrnssttrnnntnnnsttnnssttrnnntennnne 255 Sensitivity of Electronic Devices to Damage by ESD 0 ccceceeeeeeeeeeeeeeeeneeeeetieeeeetieeeeesneeeeees 256 Teledyne Analytical Instruments xvii Table of Contents Model GFC7000TA Carbon Dioxide Analyzer This page intentionally left blank j Teledyne Analytical Instruments xviii Introduction Model GFC7000TA Carbon Dioxide Analyzer 1 INTRODUCTION The Models GFC 7000TA and GFC 7000TM differ only in specifications unless clearly differentiated both models in this manual are referred to as the GFC 7000TA for simplification The GFC 7000TA measures carbon dioxide CO by comparing infrared energy absorbed by a sample to that absorbed by a reference according to the Beer Lam
168. cess to earth ground they are still trapped and can still build to high enough levels to cause damage when they are discharged A charge can be induced onto the conductive surface and or discharge triggered in the presence of a charged field such as a large static charge clinging to the surface of a nylon jacket of someone walking up to a workbench e As long as my analyzer is properly installed it is safe from damage caused by static discharges It is true that when properly installed the chassis ground of your analyzer is tied to earth ground and its electronic components are prevented from building static electric charges themselves This does not prevent discharges from static fields built up on other things like you and your clothing from discharging through the instrument and damaging it 11 4 Basic Principles of Static Control It is impossible to stop the creation of instantaneous static electric charges It is not however difficult to prevent those charges from building to dangerous levels or prevent damage due to electro static discharge from occurring 11 4 1 General Rules Only handle or work on all electronic assemblies at a properly set up ESD station Setting up an ESD safe workstation need not be complicated A protective mat properly tied to ground and a wrist strap are all that is needed to create a basic anti ESD workstation see figure 12 2 Teledyne Analytical Instruments 257 ESD Model GFC7000TA Carbon Dioxide
169. clock e If SAMPLE PERIOD were set for one minute the first reading would occur at the beginning of the next full minute according to the instrument s internal clock e Ifthe REPORT PERIOD were set for of one hour the first report activity would occur at the beginning of the next full hour according to the instrument s internal clock EXAMPLE Given the above settings if DAS were activated at 7 57 35 the first sample would occur at 7 58 and the first report would be calculated at 8 00 consisting of data points for 7 58 7 59 and 8 00 During the next hour from 8 01 to 9 00 the instrument will take a sample reading every minute and include 60 sample readings When the STORE NUM SAMPLES feature is turned on the instrument will also store how many sample readings were used for the AVG MIN or MAX calculation but not the readings themselves REPORT PERIODS IN PROGRESS WHEN INSTRUMENT IS POWERED OFF If the instrument is powered off in the middle of a REPORT PERIOD the samples accumulated so far during that period are lost Once the instrument is turned back on the DAS restarts taking samples and temporarily them in volatile memory as part of the REPORT PERIOD currently active at the time of restart At the end of this REPORT PERIOD only the sample readings taken since the instrument was turned back on will be included in any AVG MIN or MAX calculation Also the STORE NUM SAMPLES feature will report the number of sample readings taken sinc
170. closed anti Static bag or bin This will prevent induced charges from building up on the device or assembly and nearby static fields from discharging through it e Use metallic anti ESD bags for storing and shipping ESD sensitive components and assemblies rather than pink poly bags The famous pink poly bags are made of a plastic that is impregnated with a liquid similar to liquid laundry detergent which very slowly sweats onto the surface of the plastic creating a slightly conductive layer over the surface of the bag While this layer may equalizes any charges that occur across the whole bag it does not prevent the build up of static charges If laying on a conductive grounded surface these bags will allow charges to bleed away but the very charges that build up on the surface of the bag itself can be transferred through the bag by induction onto the circuits of your ESD sensitive device Also the liquid impregnating the plastic is eventually used up after which the bag is as useless for preventing damage from ESD as any ordinary plastic bag Anti Static bags made of plastic impregnated with metal usually silvery in color provide all of the charge equalizing abilities of the pink poly bags but also when properly sealed create a Faraday cage that completely isolates the contents from discharges and the inductive transfer of static charges Storage bins made of plastic impregnated with carbon usually black in color are also excellent
171. cover days weeks or months of valuable measurements The data are stored in non volatile memory and are retained even when the instrument is powered off Data are stored in plain text format for easy retrieval and use in common data analysis programs such as spreadsheet type programs The DAS is designed to be flexible users have full control over the type length and reporting time of the data The DAS permits users to access stored data through the instrument s front panel or its communication ports Using APICOM data can even be retrieved automatically to a remote computer for further processing The principal use of the DAS is logging data for trend analysis and predictive diagnostics which can assist in identifying possible problems before they affect the functionality of the analyzer The secondary use is for data analysis documentation and archival in electronic format To support the DAS functionality Teledyne Instruments offers APICOM a program that provides a visual interface for remote or local setup configuration and data retrieval of the DAS Section 6 7 The APICOM manual which is included with the program contains a more detailed description of the DAS structure and configuration The GFC 7000TA is configured with a basic DAS configuration which is enabled by default New data channels are also enabled by default but each channel may be turned off for later or occasional use Note that DAS operation is suspended while it
172. cription of certain preventative maintenance procedures that should be regularly performed on you instrument to keep it in good operating condition This section also includes information on using the DAS to record diagnostic functions useful in predicting possible component failures before they happen 10 THEORY OF OPERATION An in depth look at the various principals by which your analyzer operates as well as a description of how the various electronic mechanical and pneumatic components of the instrument work and interact with each other A close reading of this section is invaluable for understanding the instrument s operation 11 TROUBLESHOOTING This section includes pointers and instructions for diagnosing problems with the instrument such as excessive noise or drift as well as instructions on performing repairs of the instrument s major subsystems 12 A PRIMER ON ELECTRO STATIC DISCHARGE Very important information on how static electricity occurs why it is so dangerous to electronic components and assemblies as well as how to prevent that damage from occurring APPENDICES These include software menu trees warning messages definitions of DAS amp serial I O variables spare parts list repair questionnaire interconnect listing and drawings and electronic schematics NOTE Throughout this manual words printed in capital bold letters such as SETUP or ENTR represent messages as they appear on the analyzer s front
173. d here Toggle OFF ON to SETUP X X COM1 HESSEN PROTOCOL ON change activate deactivate PREV NEXT selected mode SETUP XX COM1 MODE 0 SETUP X X COM1 E 7 1 MODE OFF SET gt ae EXIT OFF SETUP X X COM1 E 7 1 MODE ON ENTR accepts the new settings ENTR EXIT EXIT ignores the new settings 6 15 4 4 Selecting a Hessen Protocol Type Currently there are two versions of Hessen Protocol in use The original implementation referred to as TYPE 1 and a more recently released version TYPE 2 that has more flexibility when operating with instruments that can measure more than one type of gas For more specific information about the difference between TYPE 1and TYPE 2 download the Manual Addendum for Hessen Protocol from the Teledyne Instruments web site http www teledyne api com manuals index asp To select a Hessen Protocol Type press Teledyne Analytical Instruments 155 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X COMMUNICATIONS MENU SETUP X X PRIMARY SETUP MENU ID INET HESN COM2 CFG DAS RNGE PASS CLK MORE SETUP X HESSEN VARIATION TYPE 1 SETUP X X SECONDARY SETUP MENU SET gt EDIT COMM ENTR accepts the new settings SETUP X X HESSEN VARIATION TYPE 1 EXIT i
174. de A variety of factors such as air conditioning and passing storms can cause changes in the absolute atmospheric pressure Teledyne Analytical Instruments 66 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 2 2 Warning Messages The most common instrument failures will be reported as a warning on the analyzer s front panel and through the COM ports Section 11 1 1 explains how to use these messages to troubleshoot problems Section 3 2 3 shows how to view and clear warning messages Table 6 3 lists all warning messages for the current version of software Table 6 3 List of Warning Messages O we wean Teledyne Analytical Instruments 67 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To view and clear warning messages SAMPLE SYSTEM RESET CO2 0 00 TEST deactivates warning messages gt TEST CAL MSG CLR SETUP SAMPLE RANGE 500 000 PPM CO2 0 00 MSG displays waming messages lt TST TST gt CAL MSG CLR SETUP SAMPLE SYSTEM RESET CO2 0 00 Press CLR to clear the current LR message _ NOTE Test OAE Mees SEIUP If more than one warning is active the If the warning message persists Ey next message will take its place after several attempts to clear it the message may indicate a Once the last waming has been real problem and not an artifact cleared the analyzer returns to of the warm up period SAMPLE mode Figure 6
175. de Analyzer 5 7 Special Features 5 7 1 Dilution Ratio Option The Dilution Ration Option is a software option that is designed for applications where the Sample gas is diluted before being analyzed by the Model GFC 7000TA Typically this occurs in Continuous Emission Monitoring CEM applications where the quality of gas in a smoke stack is being tested and the sampling method used to remove the gas from the stack dilutes the gas Once the degree of dilution is known this feature allows the user to add an appropriate scaling factor to the analyzers CO concentration calculation so that the Measurement Range and concentration values displayed on the instrument s Front Panel Display and reported via the Analog and Serial Outputs reflect the undiluted values Instructions for using the dilution ratio option can be found in Section 6 8 7 5 7 2 Maintenance Mode Switch TAI s instruments can be equipped with a switch that places the instrument in maintenance mode When present the switch accessed by opening the hinged front panel and is located on the rearward facing side of the display touchscreen driver PCA on the left side near the particulate filter When in maintenance mode the instrument ignores all commands received via the com ports that alter the operation state of the instrument This includes all calibration commands diagnostic menu commands and the reset instrument command The instrument continues to measure concentration
176. del GFC7000TA Carbon Dioxide Analyzer DIAG ANALOG O CONFIGURATION PREV NEXT ENTR EXIT AOUT S CALIBRATED NO CAL DIAG AIO CONC_OUT_2 5V CAL lt SET SET gt EDIT DIAG AIO CONC_OUT_2 RANGE 5V SET gt DIAG AIO CONC_OUT_2 REC OFS 0 mV lt SET SET gt EDIT EXIT DIAG AIO CONC_OUT_2 AUTO CAL ON lt SET SET gt EXIT to Return to the main Sample Display iY Press SET gt to select the Analog Output channel to be configured Then Press EDIT to continue DIAG AIO CONC_OUT_2 CALIBRATED NO lt SET CAL EXIT DIAG AIO AUTO CALIBRATING CONC_OUT_2 DIAG AIO CONC_OUT_2 CALIBRATED YES lt SET CAL EXIT Teledyne Analytical Instruments 128 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To select manual output calibration for a particular channel activate the ANALOG I O CONFIGURATION MENU See Section 6 13 1 then press DIAG ANALOG O CONFIGURATION DIAG AIO CONC_OUT_2 REC OFS 0 mV Exit to return to the main sample display PREV NEXT ENTR EXIT lt SET SET gt EDIT EXIT DIS Ae AQUTS CALIBRATED NO DIAGAIO CONC_OUT_ 2 AUTO CAL ON lt SET SET gt CAL EXIT Jeers EDIT Press SET gt to select the analog output channel to be configured Then press EDIT to continue DIAG AIO CONC_OUT_2 AUTO CAL ON DIAG AIO CONC_OUT_2 5V CAL ON ENTR EXIT lt SET SET gt EDIT Y Toggles the ENTR accepts the new setting ar amars and returns to the previous DIAG AIO
177. do not lay it down on a non ESD preventative surface where static charges may lie in wait 5 Only disconnect your wrist strap after you have finished work and closed the case of the analyzer 11 4 2 2 Working at an Anti ESD Work Bench When working on an instrument of an electronic assembly while it is resting on an anti ESD work bench 1 Plug your anti ESD wrist strap into the grounded receptacle of the work station before touching any items on the work station and while standing at least a foot or so away This will allow any charges you are carrying to bleed away through the ground connection of the workstation and prevent discharges due to field effects and induction from occurring 2 Pause for a second or two to allow any static charges to bleed away 3 Only open any anti ESD storage bins or bags containing sensitive devices or assemblies after you have plugged your wrist strap into the workstation e Lay the bag or bin on the workbench surface e Before opening the container wait several seconds for any static charges on the outside surface of the container to be bled away by the workstation s grounded protective mat 4 Do not pick up tools that may be carrying static charges while also touching or holding an ESD Sensitive Device e Only lay tools or ESD sensitive devices and assemblies on the conductive surface of your workstation Never lay them down on any non ESD preventative surface 5 Place any static sensitive dev
178. e Finally in certain applications where the concentration of the target gas might be high enough to be hazardous maintaining a negative gas pressure relative to ambient means that should a minor leak occur no sample gas will be pumped into the atmosphere surrounding analyzer Teledyne Analytical Instruments 193 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 2 1 Sample Gas Flow SAMPLE GAS INLET Particulate Filter EXHAUST GAS OUTLET GFC Wheel Housing GFC Motor Heat Sync SAMPLE CHAMBER Sample Gas Flow Pressure SAMPLE PRESSURE LJ l l l l l Flow Control Sensor PCA SENSOR l l l a Purge Gas Flow Control CO2 FLOW SENSOR PURGE GAS INLET gg D l Purge Gas Pressure Control _ gt Figure 9 7 Internal Pneumatic Flow Basic Configuration 9 2 2 Flow Rate Control To maintain a constant flow rate of the sample gas through the instrument the Model GFC 7000TA uses special flow control assemblies located in the purge gas line at the entrance to the GFC wheel housing and in the exhaust gas line just before the pump see Figure 10 7 These assemblies consists of e A critical flow orifice e Two o rings Located just before and after the critical flow orif
179. e analyzer The analyzer is now ready to have a voltage sensing recording device attached to that output 5 3 Expendable Kits Options 42C 42D and 43 OPTION NUMBER DESCRIPTION OPT 42C 1 year s supply of replacement of 47mm dia particulate filters OPT 42D 1 full replacement s volume of indicating soda lime for the external CO2 scrubber included with options 51 amp 53 approximate active lifetime 1 year OPT 43 Options 42 C amp 42D Teledyne Analytical Instruments 53 FAQ Model GFC7000TA Carbon Dioxide Analyzer 5 4 Calibration Valves Options There are four available options involving Zero span valves From an operational and software standpoint all of the options are the same only the source of the span and zero gases are different 5 4 1 Ambient Zero Pressurized Span Valve This option requires that both zero air and span gas be supplied from external sources It is specifically designed for applications where span gas will be supplied from a pressurized bottle of calibrated CO gas A critical flow control orifice internal to the instrument ensures that the proper flow rate is maintained An internal vent line isolated by a shutoff valve ensures that the gas pressure of the span gas is reduced to ambient atmospheric pressure Normally zero air would be supplied from zero air modules such as a Teledyne Instruments Model 701 In order to ensure that span gas does not migrate backwards throug
180. e display To access these signals attach a strip chart recorder and or data logger to the appropriate analog output connections on the rear panel of the analyzer ANALOG Pin outs for the analog output connector at the rear panel of the instrument are Teledyne Analytical Instruments 21 Getting Started Model GFC7000TA Carbon Dioxide Analyzer Table 3 4 GFC 7000TA Analog Output Pin Outs PIN ANALOG OUTPUT VDC SIGNAL MADC SIGNAL 1 V Out Out A1 2 Ground Out 3 V Out Out A2 4 Ground Out 5 A3 V Out Out Only used if O2 sensor 6 is installed Ground Out 7 A4 V Out Not used 8 Ground Not used e The default analog output voltage setting of the GFC 7000TA CO Analyzer is 0 5 VDC with a range of 0 500 ppm e TOchange these settings see Sections 6 13 4 and 6 8 respectively Teledyne Analytical Instruments Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 5 4 Connecting the Status Outputs If you wish utilize the analyzer s status outputs to interface with a device that accepts logic level digital inputs such as programmable logic controllers PLC s they are accessed via a 12 pin connector on the analyzer s rear panel labeled STATUS STATUS 3 4 5 6 7 8 D J NOTE Most PLC s have internal provisions for limiting the current the input will draw When connecting to a unit that does not have
181. e host computer The remote instruments are unaware that they are connected to a multidrop bus and never initiate Hessen protocol messages They only respond to commands from the host computer and only when they receive a command containing their own unique ID number The Hessen protocol is designed to accomplish two things to obtain the status of remote instruments including the concentrations of all the gases measured and to place remote instruments into zero or span calibration or measure mode TAI s implementation supports both of these principal features The Hessen protocol is not well defined therefore while TAI s application is completely compatible with the protocol itself it may be different from implementations by other companies The following subs describe the basics for setting up your instrument to operate over a Hessen Protocol network For more detailed information as well as a list of host computer commands and examples of command and response message syntax download the Manual Addendum for Hessen Protocol from the Teledyne Instruments web site http www teledyne api com manuals index asp Teledyne Analytical Instruments 153 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 15 4 2 Hessen com Port Configuration Hessen protocol requires the communication parameters of the GFC 7000TA s com ports to be set differently than the standard configuration as shown in the table below Table 6 29 R
182. e of the thermistor The resistance near the 68 C set point is 5 7k ohms 10 4 1 4 IR Photo Detector TEC Temperature If the PHT DRIVE test parameter described above in Table 11 2 is out of range there are two four possible causes of failure 1 The screws retaining the IR photo detector to the absorption bench have become loose Carefully tighten the screws hand tight and note whether after the analyzer has come up to operating temperature whether the PHT DRIVE voltage has returned to an acceptable level 2 The two large transistor type devices mounted to the side of the Absorption Bench have come loose from the bench Tighten the retaining screws and note whether there is an improvement in the PHT DRIVE voltage 3 The photo detector has failed Contact the factory for instructions 4 The sync demodulator circuit board has failed Contact the factor for instructions Teledyne Analytical Instruments 239 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 4 2 Excessive Noise Noise is continuously monitored in the TEST functions as the STABIL reading and only becomes meaningful after sampling a constant gas concentration for at least 10 minutes Compare the current STABIL reading with that recorded at the time of manufacture included in the GFC 7000TA Final Test and Validation Data Sheet p n 04271 shipped with the unit from Teledyne Instruments 1 The most common cause of excessive noise is leaks Leak check
183. e of Contents Model GFC7000TA Carbon Dioxide Analyzer 10 5 4 TOUCHSCrEen INTSMACE i cave oiean n iaaa ocucaapesavbeiguacessucenewesteaceoucdenivnceewu sees sveeeteneesctes 10 5 5 LCD Display Module REE E E TE ox Vallee tcsdecanbedade aceite Vata Ca cRdedaeadht dideat ait aden eds idvenat 10 516 Relay BOard EE cadens cadet csbased snag eddvatuatet cance cduaphcdedpnavanduacesead conse uncca ahs daaeuitaseendsaysua cdecshesadteseue 10 5 73 Sensor ASSembly cn cies eras levee tine ei eres Ba rei Shae 10 5 8 sMOtherbO ards niiina e ad ee o aa oE E eN EAE e Ee Aaa EAEE space ra nE 105 9 CPU eann aean a a a a aa aaea aaa eaa aa aaea ethan Aea E RRUG 10 5410 RS 232 COMMUNICATIONS meiiies i a ie a a a ai a aiaiai 10 6 Repair Procedures iiss ccececbecsetece ceeds ieii e iede aeo tiada d dedeo dor kike dee irie denlesdeadecndedeedvausieeecaesteecnecdhes 10 6 1 Repairing Sample Flow Control ASSEMDIy ccceceeecceceeeeeeeeeeeaeeeeeeeeecaaeaeeeeeeeseeeeeaeeeeeeeseceeeeeeeeeeeeea 10 6 2 Removing Replacing the GFC Wheel o oo ee eeeceeeeeeeeeneeeseeeeeeeeeeeeeeaaeeeseeeaeeeeaeeeeeeaeeeseeeeeeeneeeeneaaes 10 6 3 Disk On Module Replacement Procedure 0 eeceeecceeeeeneeeceeneeeeeneeeeeeaaeeeseeeaeeesnaeeeeeeaeeeseeeaeeseneeeeeaaes 11 A PRIMER ON ELECTRO STATIC DISCHARGE ccseecsseeesseeesseeenseeeneneensneeneeaeaseaeaseasaeeeeaseaeaseesaseaenseaeaseaenes 11 1 How Static Charges are Created ceecceeeenneee eset eeeeneeeeeeaeeeee
184. e relay board 9 3 6 Mother Board This printed circuit assembly provides a multitude of functions including A D conversion digital input output PC 104 to I2C translation temperature sensor signal processing and is a pass through for the RS 232 and RS 485 signals 9 3 6 1 A to D Conversion Analog signals such as the voltages received from the analyzer s various sensors are converted into digital signals that the CPU can understand and manipulate by the analog to digital converter A D Under the control of the CPU this functional block selects a particular signal input e g BOX TEMP CO2 MEAS CO2 REF etc and then coverts the selected voltage into a digital word The A D consists of a voltage to frequency V F converter a programmable logic device PLD three multiplexers several amplifiers and some other associated devices The V F converter produces a frequency proportional to its input voltage The PLD counts the output of the V F during a specified time period and sends the result of that count in the form of a binary number to the CPU Teledyne Analytical Instruments 207 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer The A D can be configured for several different input modes and ranges but in the GFC 7000TA is used in uni polar mode with a 5 V full scale The converter includes a 1 over and under range This allows signals from 0 05 V to 5 05 V to be fully converted For calibration pur
185. e sure all circuit boards and other components are in good shape and properly seated 5 Check the connectors of the various internal wiring harnesses and pneumatic hoses to make sure they are firmly and properly seated 6 Verify that all of the optional hardware ordered with the unit has been installed These are listed on the paperwork accompanying the analyzer VENTILATION CLEARANCE Whether the analyzer is set up on a bench or installed into an instrument rack be sure to leave sufficient ventilation clearance AREA MINIMUM REQUIRED CLEARANCE Back of the instrument 4 in Sides of the instrument 1 in Above and below the instrument 1 in Various rack mount kits are available for this analyzer See Section 5 1 of this manual for more information Teledyne Analytical Instruments 10 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 2 Front Panel Figure 3 1 shows the analyzer s front panel layout followed by a close up of the display screen in Figure 3 2 which is described in Table 3 1 The two USB ports on the front panel are provided for the connection of peripheral devices e plug in mouse not included to be used as an alternative to the touchscreen interface e thumb drive not included to download updates to instruction software contact TAI Customer Service for information Model Display ID USB Power Ports Switch Figure 3 1 Front Panel Layout
186. e the instrument was restarted Teledyne Analytical Instruments 82 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To define the REPORT PERIOD follow the instruction shown in Section 6 7 2 2 then press From the DATA ACQUISITION menu see Section 6 7 2 2 Edit Data Channel Menu Use the PREV and NEXT buttons to scroll to the 0 CONC ATIMER 1 900 data channel to be edited Exits to the main PREV NEXT INS DEL EDIT PRNT EXIT Data Acgrisiton SETUP X X NAME CONC lt SET SET gt EDIT PRINT Press SET gt key until you reach REPORT PERIOD SETUP X X REPORT PERIOD 000 01 00 lt SET SET gt EDIT PRINT SETUP X X REPORT PERIODD DAYS 0 Set the number of days between reports 0 366 0 0 0 ENTR EXIT Press buttons to set hours between reports in the format 24 hour clock PM hours are 13 thru 23 midnight is 00 00 Example 2 15 PM 14 15 SETUP X X REPORT PERIODD TIME 01 01 ENTR accepts the new string and returns to the previous menu EXIT ignores the new string and t to th i llf at any time an illegal entry is selected e g days gt 366 rye eaPrevieus men the ENTR button will disappear from the display Teledyne Analytical Instruments 83 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 2 7 Number of Records The number of data records in the GFC 7000TA is limited to about a cumulative one million data point
187. ed On Sample Mode active Front Panel Display being updated DAS data SAMPLE Green being stored Blinking Unit is operating in sample mode front panel display being updated DAS hold off mode is ON DAS disabled Off Auto Cal disabled CAL Yellow On Auto Cal enabled Blinking Unit is in calibration mode Off No warnings exist FAULT oo i i Blinking Warnings exist Conc Displays the actual concentration of the sample gas currently being measured by the analyzer in the currently selected units of measure Displays the name of the analyzer s current operating mode P r mi Displays a variety of informational messages such as warning messages operational data test function values and response messages during interactive tasks Control Buttons Displays dynamic context sensitive labels on each button which is blank when inactive until applicable Figure 3 3 shows how the front panel display is mapped to the menu charts illustrated in this manual The Mode Param parameters and Conc gas concentration fields in the display screen are represented across the top row of each menu chart The eight touchscreen control buttons along the bottom of the display screen are represented in the bottom row of each menu chart Teledyne Analytical Instruments 13 Getting Started Model GFC7000TA Carbon Dioxide Analyzer Menu Chart Layout Param Touch Control Buttons Display Example Menu Chart Representing Display Example
188. edeuscoen see A E Ea cvs O TE Apa a E EE N EEn 25 3 0 1 Basic Pneumatic CONNECHIONS 0 c cissceeetecesvsectereesscneneeattpnesnoceyeavh cabs cunt sesscuaaneyeenmestysarhsstuneeseneseybamneteeecs 26 3 6 2 Connections with Internal Valve Options Installed 0 0 ec eee cence eeeeeeeeeeneeeeeeaeeeseneeeeesnaeeeeeeeeeneeeeenead 30 3 6 3 Pneumatic Connections in Multipoint Calibration Applications ee eeeeeseeeeeeeeeeenneeeeeeneeeeneeeenead 32 3 6 4 Setting the Internal Purge Air Pressure eee eeeeneeeceeeeeeeeeneeeeeeaeeeeeneeeeesaeeeeeeeaeeeseneeeeesaeesenaeeeenneeeeneaa 32 3T Initial Operation icies e te ithe iene ch cents get e uedeb aed Madea eee eee eee ete dade 33 E PTAS EESTIL oR EEE T A A T E T S eruacdntstascceearusdchesbasteeseys 33 3 7 2 Warm Uparite el ven a eee eile ee A etc 34 3 73 Warning Message Ssi edee aiteas ii dada d i Tadeo eioi ea aada dee ii iania deat 34 3 1 4 Functional CHECK surn a es Thiel a a a e A A AEE EA AE EAA AOR aE AARE 36 3 8 Initial Calibration Procedure iersinii aa aoa i abbas ces Aa Gases Sead nodes EEE A RAE este 37 3 8 1 Initial O2 Sensor Calibration Procedure eee ceeeenececeeeeeeeseneeeeeeaeeeeeneeeeesnaeeeeseeaeeeenneeeeesiaeeeeeeaeeeseneeeeaa 40 4 FREQUENTLY ASKED QUESTIONS sccceisccccscecsticctscecctevectinestcrenties scinnteer ser ceauevnnieccueeestersue ie seteenneessiectneeeccirenecenien 45 AAS FAQ Saee a ea aae E E eRe E N de rsoes coe Hiden fh cdnes ech SAE A Servis ictne S
189. ee Menu Tree A 6 in Appendix A The individual parameters however are explained in more detail in the indicated in 6 15 These tools can be used ina variety of troubleshooting and diagnostic procedures and are referred to in many places of the maintenance and trouble shooting s Table 6 15 GFC 7000TA Diagnostic DIAG Functions Front Panel O meere yest SIGNAL I O Allows observation of all digital and analog signals in the instrument Allows certain digital signals such as valves and DIAG I O 6 13 2 heaters to be toggled ON and OFF ANALOG OUTPUT When entered the analyzer performs an analog output step test This can be used to calibrate a chart recorder or DIAG AOUT 6 13 3 to test the analog output accuracy ANALOG I O CONFIGURATION the signal levels of the instruments analog outputs may be calibrated either individually or as a DIAG AIO 6 13 4 group Various electronic parameters such as signal span and S offset are available for viewing and configuration ELECTRIC TEST The analyzer is performing an electric test This test simulates IR detector signal in a known manner so that the DIAG OPTIC 6 13 5 proper functioning of the sync demod board can be verified DARK CALIBRATION The analyzer is performing a dark calibration procedure This procedure measures and stores the DIAG ELEC 6 13 6 inherent dc offset of the sync demod board electronics PRESSURE CALIBRATION The analyzer records the current output of the sample gas pr
190. eeeeeeceeeeseeeeceaeeeeeeeceaeeseeeeeeaeeseeeeseaeeeeeeseeeeseeeseeeeseaeeee 57 5 6 Oxygen Sensor OPT 65 5 6 1 Fheory Of Operation n 3 diesiaieinces at ished gee a ae aa E heestodacedsectange aE A EE E AES E EEEE 5 7 Special Feat reS kn a a a a a a a EE Ea dint oaa A a de 5 7 1 Dilution Ratio Option 7 2 Maintenance Mode Switch daise n aa e e A E a a eais 61 5 7 3 Second Language Switch ioiii sosti einem enon ii eraai raip aaeeeiai ioi iss 61 6 OPERATING INSTRUCTIONS ccc eocictees cose cetcedds les dec tees ten cdutdadend siendicdeccedeestaaseucaids sdueeuee cusses acts evgelsvucesdedestcaehdegvsecedeneg 63 6 1 Overview of Operating MOdES 00 0 ececceeenteeeeenneeeeeeeeeeeeaaeeeseeaaeeeseaeeeseeaaeeeceeaaeeeeaeeeseeaeeeseeeeeseieeeesenaeeesenaeess 63 6 2 Sample Modein oiei iadaaa iaa ste daedetceddeu sates ia ea iea nevssugedsticedee slits tenleneecieldieeeg 64 Teledyne Analytical Instruments xi Table of Contents Model GFC7000TA Carbon Dioxide Analyzer 6 2 1 Fest FUNCIONS ga csecsseceicvede ce cess ernaten aae aa a ap aaa aeaa Aara ONAE EAEE TEENE AEEA EENE NEEE 65 6 2 22 Warning Message Sasi iiaeiai eae e ae ae ie e ea e e a Eae eaae aeaea ine ai 67 6 3 Calibration MOde EEEE EEE A A TEN 68 6 4 SETUP MODE vicina een ne ie i ain a nee de an ee ee 69 6 5 SETUP gt CFG Viewing the Analyzer s Configuration Information ceeseeeeeeceeeeeneeeeeereeeeenneeeeeenateeenenaees 70 6 6 SETUP gt ACAL Automatic Cal
191. eeeeeesnaeeeeeeaeeeeneaeeeesnneeeenieeeseenaeeeenneeeeneaa 11 2 How Electro Static Charges Cause Damage 0 ecceceececeeeeeeeeeee cece ee eeeeneaeaeeeeeeeesesaaeeeeeeesesenasaeeesensaeaeees 11 3 Common Myths About ESD Damage ccceecceccceeeeeceee ce ee cece ceca aeaeeeeeeesceaaaeceeeeeseseeaaeaeeeeesesenceeeeeseesenaeees 11 4 Basic Principles of Static Control ccecececeee cece ee eeeeeeae cnet ee eeeeeaeceeeeeeeecaaeaeeeeesesecaaeaeeeeeeeseceeeaeeeeeeeeeeeeaaees LIST OF APPENDICES APPENDIX A VERSION SPECIFIC SOFTWARE DOCUMENTATION L 8 APPENDIX A 1 Models GFC 7000TA and GFC 7000E Software Menu Trees APPENDIX A 2 GFC 7000 Series Setup Variables APPENDIX A 3 GFC 7000 Series Warnings and Test Measurements APPENDIX A 4 GFC 7000 Series Signal I O Definitions APPENDIX A 5 GFC 7000 Series DAS Triggering Events APPENDIX A 6 GFC 7000 Series DAS Parameters APPENDIX A 7 Terminal Command Designators APPENDIX A 8 Terminal Key Assignments APPENDIX A 9 GFC 7000 Series MODBUS Register APPENDIX B SPARE PARTS LIST and RECOMMENDED SPARES STOCKING LEVELS APPENDIX C REPAIR QUESTIONNAIRE APPENDIX D ELECTRONIC SCHEMATICS Teledyne Analytical Instruments Xiv Table of Contents Model GFC7000TA Carbon Dioxide Analyzer LIST OF FIGURES Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 3 5 Figure 3 6 Figure 3 7 Figure 3 8 Figure 3 9 Figure 3 10 Figure 3 11 Figure 3 12 Figure 3
192. eeeeesneeeeeenaeeeeneatens 172 7 5 2 Use of Zero Span Valves with Remote Contact Closure 00 ee eeecceceeeteeeceeeeeseenaeeeeeeeeeeesnaeeeeeenaeeeenenaees 173 7 6 Automatic Zero Span Cal Check AutoCal cc eecceeeeneeeeeenneeeeneeeeeeeaeeeceeaaeeesnaeeeeesaaeeeeeeaaeeesneeesenaeeeeeeaeees 173 7 6 1 AutoCal with Auto or Dual Reporting Ranges Modes Selected ecccceeecceceeseeeeeeeneeeeneeeeeseneeeeneeaees 176 4 7 Calibration Quality 20 2 cceteceesdcacveseetus ce sascecs A E dcunsuapsedadsustundenteedt shepus dees setednadesatadsuscaetcaeehaseuneeras 176 Teledyne Analytical Instruments xii Table of Contents Model GFC7000TA Carbon Dioxide Analyzer 8 MAINTENANCE SCHEDULE amp PROCEDURES ccssccssesseeeeeeeeeeseeenseeeseeaeaseeeneeeeaseaeseeesaseaeseeasaeeesseeasaeeeseeeeas 179 8 1 Maintenance Schedule cai peier aai e e raed athe te a eaae eea aA a ae aa E aeaaeae a aae Ee Faaa ET 179 8 2 Predicting Failures Using the Test Functions 0 ee ce eeeeeeceeeeeeeeeeeeeeeeaeeeeeeeaeeeceaeeeeesaaeeeeeeaaeeesneeesenaeeeseenaeees 183 8 3 Maintenance Procedures 1 e s iieein ieee a E ie e th sain nn viernes serene ie 184 8 3 1 Replacing the Sample Particulate Filter ees eeeeeeeeeeeeeeeeeneeeseeeeeeeeeaeeeeesaeeeseeeeeeesneesenaeeeeeeaeees 184 8 3 2 Rebuilding the Sample PUMP vscscvi ceicse cccesast cases cant snessendiaysecneseesten casboeebeesbenenaealt phesbees ceuhebbesdecvedbnpneenscoee 185 8 3
193. eeeneeeeeaaes 146 6 15 3 Additional Communications Documentation eee ee eeeee cence eeeeneeeeeeeaeeeeeneeeeesaaeeeseeaaeeesnneeeeneeeeeeaaes 153 6 15 4 Using the GFC 7000TA with a Hessen Protocol Network eeecceeeesneeeeeeeeeeeeneeeeeenaeeeeeneeeeenenaeeeeneas 153 7 CALIBRATION PROCEDURES iz iseicetecccsscetencienteccctvececccicneecnttvane ccencteteeeesaucenusnestteeeccrwsttcitusce annasman niaan aana 161 751 Before Calibration iis sci da is scencgss ste bocdendenege bend aah Aa ats A a N Sesdeebigedsty A A A a a reine 161 F421 Zero Airand Span Gass tiaina aa Are E ea A yeden died dee iea A ii 161 7 1 2 Calibration Gas Traceability 0 2 cei eeeeseeeeeeeeeeenneeeeeeeeeeeeeneeeeeesaaeeeceeeaeeeeaeeeeesaeeeseeeeesnneeeensnaeeeeneeaeess 162 7 1 3 Data Recording Devices isni apri tnne Meee eect th nies etnies iene S 162 7 2 Manual Calibration without Zero Span VAaIVeS eee ee eeeeeeeeeeeeeeeeeeeeceeaeeeceeeaeeecnaeeeeesaaeeeseeaaeeesneeesenaeeesseaeees 162 7 3 Manual Calibration Checks iiini arenneren ian aA aa taa eaaa ne Ea Tina ERa N aaaea 165 7 4 Manual Calibration with Zero Span ValVeS ecceeccceeeneeeeeeneeeeceeeeeeeeaeeeseeaaeeeseeeesesaaeeeseeaaeeesneeeesenaeeeseeaaeees 166 7 5 Manual Calibration Checks with Zero Span Valves eee cceesseceeeeeeeeeeneeeeceeaeeeceeeeeesaeeeeeeaaeeesnieeeseeeeeeeenaeees 171 7 5 1 Zero Span Calibration on Auto Range or Dual Ranges cc cceeeeeceeeeseeeeeeneeeceeaeeeee
194. eneeeeeeneeeeeeeenaeeeeeesaeeeeeeteeeeseaes 152 Pneumatic Connections Basic Configuration Using Bottled Span Gas eeeeeeeeeteeeeee 162 Pneumatic Connections Basic Configuration Using Gas Dilution Calibrator 00 ee 163 Pneumatic Connections Ambient Zero Pressurized Span Valves c ccceeeeeeeeeeteeees 166 Pneumatic Connections Ambient Zero Pressurized Span Valves and External Zero Air SCIUDDEN 1c 4a ied ee ig es ated tla eel ae eg Been tied ee eb eed et aed Med 167 Pneumatic Connections Ambient Zero Ambient Span Valves ccccceeceeeeeeeeeeeeeneees 167 Pneumatic Connections Ambient Zero Ambient Span Valves with External Zero Air SCUDDER chee eee ase eee eevee pian we nd ees ee eed dei ee dt 168 Sample Particulate Filter Assembly 0 cece teeter terete ee erties ee teeeeeteeeeetiaeeeeeniieeeeneae 184 Measurement Fundamentals cccccceeeeeeeeceeeeeeeeeeseeaaeaeeeeeeeeesenaaeaeeeeeeesesacceaeeeseeeeseseseaees 188 GEC Wheel E EE A E inl att edt eae at death Ae ceria 188 Measurement Fundamentals with GFC Wheel cccccceceeeeeeeeceeceeeeeeeseccncaeeeeeeeeeeseeenaeees 189 Affect of CO2 in the Sample on CO2 MEAS amp CO2 REF 2 ccccccceceeeeeeeeeeeeeeeeeeeeeeseessnaeees 190 Effects of Interfering Gas on CO2 MEAS amp CO2 REF 10 0 ccceccceceeseneeeeeneeeeeeeneeeeeeeneeeeeeaes 191 j Teledyne Analytical Instruments XV Table of Co
195. entration field means that the M R ratio is invalid because CO2 REF is either too high gt 4950 mVDC or too low lt 1250 VDC Teledyne Analytical Instruments 64 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 2 1 Test Functions Test functions are shown on the front panel display while the analyzer is in SAMPLE mode They provide information about the present operating status of the instrument and can be used troubleshooting and can be recorded in one of the DAS channels Section 6 7 for data analysis To view press the lt TST TST gt buttons Table 6 2 Test Functions Defined PARAMETER DISPLAY UNITS MEANING Range RANGE ppg ppm The full scale limit at which the reporting range of the analyzer is RANGE1 UGM MGM currently set THIS IS NOT the Physical Range of the instrument RANGE2 3 See Section 6 8 1 for more information O2 Range O2 RANGE The range setting for the O2 Sensor Stability STABIL PPB PPM Standard deviation of CO2 concentration readings Data points are UGM MGM recorded every ten seconds using the last 25 data points CO2 Measure MEAS MV The demodulated peak IR detector output during the measure portion of the GFC Wheel cycle CO2 Reference The demodulated peak IR detector output during the reference REF MV portion of the GFC wheel cycle Measurement The result of CO2 MEAS divided by CO2 REF This ratio is the Reference
196. ents Specifications Model GFC7000TA Carbon Dioxide Analyzer GFC 7000TM Parameter GFC 7000TM Specification Certifications CE EN61010 1 90 A1 92 A2 95 EN61326 Class A 1 At constant temperature and voltage 2 2 CE Mark Compliance Emissions Compliance The Teledyne Instruments Model GFC 7000TA Gas Filter Correlation CO Analyzer was tested and found to be fully compliant with EN61326 1997 w A1 98 Class A FCC Part 15 Subpart B section 15 107 Class A ICES 003 Class A ANSI C63 4 1992 amp AS NZS 3548 w A1 amp A2 97 Class A Safety Compliance The Teledyne Instruments Model GFC 7000TA Gas Filter Correlation CO Analyzer was tested and found to be fully compliant with IEC 61010 1 90 A1 92 A2 95 Teledyne Analytical Instruments Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 GETTING STARTED 3 1 Unpacking and Initial Set Up CAUTION 7000TA To avoid personal injury always use two persons to lift and carry the Model GFC WARNING instrument is under power Never disconnect PCAs wiring harnesses or electronic subassemblies while the CAUTION Avoid Warranty Invalidation Printed circuit assemblies PCAs are sensitive to electro static discharges too small to be felt by the human nervous system Damage resulting from failure to use ESD protection when working with electronic assemblies will void the instrument warran
197. er 9 3 Electronic Operation 9 3 1 Overview Figure 10 9 shows a block diagram of the major electronic components of the Model GFC 7000TA The core of the analyzer is a microcomputer central processing unit CPU that controls various internal processes interprets data makes calculations and reports results using specialized firmware developed by Teledyne Instruments It communicates with the user as well as receives data from and issues commands to a variety of peripheral devices via a separate printed circuit assembly called the Mother Board The mother board directly mounted to the analyzer s inside rear panel collects data performs signal conditioning duties and routs incoming and outgoing signals between the CPU and the analyzer s other major components Data is generated by a gas filter correlation optical bench which outputs an analog signal corresponding to the concentration of COz in the sample gas This analog signal is transformed into two pre amplified DC voltages CO2 MEAS and CO2 REF by a synchronous demodulator printed circuit assembly CO2 MEAS and CO2 REF are converted into digital data by a unipolar analog to digital converter located on the mother board A variety of sensors report the physical and operational status of the analyzer s major components again through the signal processing capabilities of the mother board These status reports are used as data for the CO concentration calculation and as tr
198. er VENT here if input Source of is pressurized SAMPLE GAS Removed during calibration Calibrated SAMPLE CO Gas atspan gas EXHAUST concentration VENT SPAN Chassis PRESSURE SPAN External Zero Air IZS Scrubber PURGE LINE Figure 7 4 Pneumatic Connections Ambient Zero Pressurized Span Valves and External Zero Air Scrubber Source of SAMPLE GAS Removed during J calibration VENT here if input is pressurized Calibrated CO Gas Model T700 gas at 100x span gas Dilution concentration Calibrator SAMPLE EXHAUST VENT SPAN Chassis PRESSURE SPAN IZS PURGE LINE Figure 7 5 Pneumatic Connections Ambient Zero Ambient Span Valves j Teledyne Analytical Instruments 167 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Source of VENT here if input SAMPLE GAS is pressurized Removed during calibration Calibrated CO Gas Model T700 gas at 100x span gas Dilution concentration Calibrator SAMPLE EXHAUST VENT SPAN Chassis PRESSURE SPAN External Zero Air IZS Scrubber PURGE LINE Figure 7 6 Pneumatic Connections Ambient Zero Ambient Span Valves with External Zero Air Scrubber Teledyne Analytical Instruments 168 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer STEP TWO Set the expected CO Span Gas concentration SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL
199. er has had zero span valve options 52 or 53 the CO scrubber may need maintenance 4 Check to make sure that there is no ambient air leaking into zero air line Teledyne Analytical Instruments 237 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 4 Other Performance Problems Dynamic problems i e problems which only manifest themselves when the analyzer is monitoring sample gas can be the most difficult and time consuming to isolate and resolve The following provides an itemized list of the most common dynamic problems with recommended troubleshooting checks and corrective actions 10 4 1 Temperature Problems Individual control loops are used to maintain the set point of the absorption bench filter wheel and IR photo detector temperatures If any of these temperatures are out of range or are poorly controlled the GFC 7000TA will perform poorly 10 4 1 1 Box or Sample Temperature Box Temperature The box temperature sensor is mounted to the motherboard and cannot be disconnected to check its resistance Rather check the BOX TEMP signal using the SIGNAL I O function under the DIAG Menu See Section 10 1 3 This parameter will vary with ambient temperature but at 30 C 6 7 above room temperature the signal should be 1450 mV Sample Temperature The Sample Temperature should closely track the bench temperature If it does not locate the sensor which is located at the midpoint of the optical bench in a
200. erent fully defined and not customizable Appendix A 5 lists firmware specific data parameters for the analyzer DAS parameters include things like CO concentration measurements temperatures of the various heaters placed around the analyzer pressures and flows of the pneumatic subsystem and other diagnostic measurements as well as calibration data such as slope and offset Most data parameters have associated measurement units such as mV ppb cm min etc although some parameters have no units With the exception of concentration readings none of these units of measure can be changed To change the units of measure for concentration readings See Section 6 8 6 Note DAS does not keep track of the unit of each concentration value and DAS data files may contain concentrations in multiple units if the unit was changed during data acquisition Each data parameter has user configurable functions that define how the data are recorded Table 6 8 DAS Data Parameter Functions FUNCTION EFFECT PARAMETER Instrument specific parameter name SAMPLE MODE INST Records instantaneous reading AVG Records average reading during reporting interval MIN Records minimum instantaneous reading during reporting interval MAX Records maximum instantaneous reading during reporting interval SDEV Records the standard deviation of the data points recorded during the reporting interval PRECISION Decimal precision of parameter value 0 4
201. erent modes listed in Table 6 10 which can be combined by adding the mode ID numbers For example quiet mode computer mode and internet enabled mode would carry a combined mode ID of 11 the standard configuration on the GFC 7000TA COM2 port Note that each COM port needs to be configured independently Table 6 10 Com Port Communication Modes MODE ID DESCRIPTION QUIET Quiet mode suppresses any feedback from the analyzer DAS reports and warning 1 messages to the remote device and is typically used when the port is communicating with a computer program such as APICOM Such feedback is still available but a command must be issued to receive them COMPUTER 2 Computer mode inhibits echoing of typed characters and is used when the port is communicating with a computer program such as APICOM SECURITY 4 When enabled the serial port requires a password before it will respond The only command that is active is the help screen CR HESSEN 16 The Hessen communications protocol is used in some European countries Teledyne PROTOCOL Instruments part number 02252 contains more information on this protocol E 7 1 When turned on this mode switches the com port settings from 2048 No parity 8 data bits 1 stop bit to Even parity 7 data bits 1 stop bit RS 485 1024 Configures the COM2 Port for RS 485 communication RS 485 mode has precedence over multidrop mode if both are enabled MULTIDROP 32 Multidrop prot
202. ernet LAN USB RS 232 and RS 485 Refer to Figure 3 4 for the locations of the rear panel connections 7 Teledyne Analytical Instruments 19 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 5 1 Power Connection WARNING Power connection must have functioning ground connection Do not defeat the ground wire on power plug Turn off analyzer power before disconnecting or connecting electrical subassemblies Do not operate with cover off CAUTION Check the voltage and frequency specifications on the rear panel Model Label for compatibility with the local power before plugging the analyzer into line power Do not plug in the power cord if the voltage or frequency is incorrect The GFC 7000TA analyzer can be configured for both 100 130 V and 210 240 V at either 50 or 60 Hz To avoid damage to your analyzer make sure that the AC power voltage matches the voltage indicated on the rear panel serial number label and that the frequency is between 47 and 63 Hz Attach the power cord to the analyzer and plug it into a power outlet capable of carrying at least 10 A current at your AC voltage and that it is equipped with a functioning earth ground 3 5 2 Connecting Analog Inputs Option 64 The Analog In connector is used for connecting external voltage signals from other instrumentation such as meteorological instruments and for logging these signals in the analyzer s internal DAS The
203. es 97 6 10 SETUP gt CLK Setting the Internal Time of Day Clock 00 ec eececeeeeeeeeeeenneeeeeneeeeeeaaeeeeeeeaeeeeneeeenenaeeeenenaees 99 6 11 SETUP gt MORE gt COMM Using the Analyzer s Communication Ports cescceeeesneeeeeneeeenneeeeeenaes 101 6 111 2Analyzer ID sh steiner eee iin hh rane aed ee ie die de 101 6 11 22 COM Port Default Settings smireni ipii ei ai e e e dea debeseoasdi renee 102 6 11 3 RS 485 Configuration Of COM2 ooo ceceneeceeeeeeeeeeneeeeeeaeeeeeeeeeeesaaeeeseeaaeeeenneeeeesaeeesesaeeeseeesenaeeeeseaaes 105 6 11 4 DTE and DCE Communication cic cccceeeceeeeeneeeeeeeneeeeeeneeeeeeaeeeeeeaaeeeenneeeeesnaeeeeeeaeeeseeeeeeneeeeeeaaes 105 6 11 5 COM Port Communication Modes eeccceecceeeeeneeeeeneeeeeeeeeeeesaaeeeeeeaaeeeceneeeeesaaeeeseeaeeeseeeeeeneeeeeeaaes 106 6 11 6 Remote Access via the Ethernet ss 0 sees en sil eee i eis E Ea 108 6 11 7 Multidrop RS 232 Set UP irmied onoare de cbes eh edescecgesnen a e sluee aa araa aiat 114 6 11 8 COM Port Baud Rate sss cesccssorccsaeatcensccccrbetua ipnbaghcenetsundtanGoabaeguuhendes skedd aatia a aeaiia tittie 116 6211 9 COM Port Testing ataa i e a e aE a du Aaaa aaa EAE AEE EEES 117 6 12 SETUP gt MORE gt VARS Internal Variables VARS eeeseereesiissssiiesiiiiesiinreriinsriirssriinesiinnrernssrens 118 6 13 SETUP gt MORE gt DIAG Using the Diagnostics Functions essssesriesssieerrireeiisseriresriiresrinnerinssrernss 120
204. essure sensor This value is used by DIAG PCAL 6 13 7 the CPU to compensate the CO concentration FLOW CALIBRATION This function is used to calibrate the gas flow output signal This setting is retained when exiting DIAG PIRG EGA Se TEST CHAN OUTPUT Configures the A4 analog output channel DIAG TCHN 6 13 9 j Teledyne Analytical Instruments 120 Operating Instructions 6 13 1 Accessing the Diagnostic Features To access the DIAG functions press the following buttons EXIT returns to the main SAMPLE display EXIT returns to the PRIMARY SETUP MENU From this point forward EXIT returns to the SECONDARY SETUP MENU SETUP X X SECONDARY SETUP MENU COMM VARS DIAG SAMPLE ENTER SETUP PASS 818 SAMPLE RANGE 500 00 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT ENTR EXIT m DIAG SIGNAL I O NEXT ENTR EXIT DIAG ANALOG OUTPUT PREV NEXT 6 13 2 Signal I O The signal I O diagnostic mode allows reviewing and changing the digital and analog input output functions of the analyzer See Appendix A 4 for a complete list of the parameters available for review under this menu ENTR EXIT Model GFC7000TA Carbon Dioxide Analyzer DIAG ANALOG O CONFIGURATION PREV NEXT ENTR EXIT DIAG ELECTRICAL TEST PREV NEXT ENTR EXIT DIAG DARK CALIBRATION PREV NEXT ENTR EXIT DIAG PRESSURE CALIBRATION PRE
205. eter before the currently displayed Parameter Use to configure currently displayed the functions for this Parameter Deletes the Parameter Teledyne Analytical Instruments 80 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To configure a specific data parameter press FROM THE EDIT DATA PARAMETER MENU see previous section SETUP XX 0 PARAM CONC 1 MODE AVG PREV NEXT INS DEL EDIT EXIT SETUP X X PARAMETERS CONC1 SET gt EDIT SETUP X X PARAMETERS 1 ENTR EXIT If more than on parameter is active for this channel these cycle through list of existing Parameters SETUP X X SAMPLE MODE AVG lt SET SET gt EDIT SETUP X X SAMPLE MODE INST INST AVG MIN MAX EXIT Press the button for the desired mode SETUP XX PRECISION 1 ENTR accepts the new setting and returns to the previous menu EXIT ignores the new setting and returns to the previous EXIT SETUP X X PRECISION 1 Set for 0 4 SETUP X X STORE NUM SAMPLES OFF lt SET Returns to previous EDIT Functions SETUP X X STORE NUM SAMPLES OFF lt SET SET gt EDIT 1 lt SET OFF ENTR Turn ON or OFF Teledyne Analytical Instruments Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 2 6 Sample Period and Report Period The DAS defines two principal time periods by
206. etting EXIT ignores the SETUP X X GATEWAY IP 000 000 000 000 new setting Da lt SET SET gt EDIT EXIT SETUP X X SUBNET IP 000 000 000 000 lt SET SET gt EDIT Input the new setting SETUP X X SUBNET IP 0 00 000 000 000 lt CH CH gt DEL 7 ENTR EXIT ENTR accepts A the new setting EXIT ignores the SETUP X X SUBNET IP 000 000 000 000 new setting Da lt SET SET gt EDIT EXIT SETUP X X INITIALIZING INET 0 INITIALIZATION process proceeds automatically SETUP X X INITIALIZATION SUCCEEDED SETUP X X INITIALIZATION FAILED SETUP X X COMMUNICATIONS MENU ID ADDR INET EXIT Contact your IT Network Administrator Teledyne Analytical Instruments 112 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 6 3 Changing the Analyzer s HOSTNAME The HOSTNAME is the name by which the analyzer appears on your network The default name for all Teledyne Instruments Model GFC 7000TA analyzers is GFC 7000TA To change this name particularly if you have more than one Model GFC 7000TA analyzer on your network press SAMPLE RANGE 500 000 PPM CO2 X XXX DHCP ON lt TST TST gt CAL SETUP a SETUP X X PRIMARY SETUP MENU Continue pressing SET gt UNTIL CFG DAS RNGE PASS CLK MORE EXIT HOSTNAME SETUP X X SECONDARY SETUP MENU EDIT COMM EXIT HOSTNAME SETUP X X COMMUNICATIONS MENU lt CH CH gt INS DEL ID INET EXIT ee S
207. ey consist of the two characters Ox followed by one or more hexadecimal digits 0 9 A F a f which is the C programming language convention No plus or minus sign is permitted For example 0x1 0x72 0x1234abcd are all valid hexadecimal integers e Floating point numbers are used to specify continuously variable values such as temperature set points time intervals warning limits voltages etc They consist of an optional plus or minus sign Teledyne Analytical Instruments 147 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer followed by zero or more digits an optional decimal point and zero or more digits At least one digit must appear before or after the decimal point Scientific notation is not permitted For example 7 0 1234 5678 0 1 1 are all valid floating point numbers e Boolean expressions are used to specify the value of variables or I O signals that may assume only two values They are denoted by the keywords ON and OFF e Text strings are used to represent data that cannot be easily represented by other data types such as data channel names which may contain letters and numbers They consist of a quotation mark followed by one or more printable characters including spaces letters numbers and symbols and a final quotation mark For example a 1 123abc and lt gt are all valid text strings It is not possible to include a quotation mark character
208. f the O sensor is maintained at a constant 50 C by means of a PID loop and can be viewed on the front panel as test function O2 TEMP The O sensor assembly itself does not have any serviceable parts and is enclosed in an insulated canister 5 6 1 3 Pneumatic Operation of the O2 Sensor e Pneumatically the O2 sensor is connected to the bypass manifold and draws a flow of about 120 cm min in addition to the normal sample flow rate and is separately controlled with its own critical flow orifice Figure 5 8 shows the internal pneumatics of the GFC 7000TA with the O2 Sensor installed Teledyne Analytical Instruments 59 FAQ Model GFC7000TA Carbon Dioxide Analyzer A l i l l SAMPLE GAS Particulate l INLET Filter l v i l I 52 o c on 2 ee i EXHAUST Ww o l GAS OUTLET Oz a oo ra Sensor oT IME oO zw r i E 7 a l O2 Sensor i lt Flow Control l 2 8 l l 5 z l SAMPLE vo l Flow Pressure RESSIRE DS l l Sensor PCA SENSOR 2s I i I 03 FLOW l l SENSOR l PURGE GAS l INLET l i l i l i l i Purge Gas l Pressure Control I Figure 5 6 GFC 7000TA Internal Pneumatics with O2 Sensor Option 65 j Teledyne Analytical Instruments 60 FAQ Model GFC7000TA Carbon Dioxi
209. fer to Section 11 of this manual for troubleshooting tips 7 1 1 Zero Air and Span Gas To perform the following calibration you must have sources for zero air and span gas available Zero Air is similar in chemical composition to the Earth s atmosphere but scrubbed of all components that might affect the analyzer s readings Zero air should contain less than 25 ppb of CO and other major interfering gases such as CO and Water Vapor It should have a dew point of 5 C or less Span Gas is a gas specifically mixed to match the chemical composition of the type of gas being measured at near full scale of the desired measurement range It is recommended that the span gas used have a concentration equal to 80 of the full measurement range If Span Gas is sourced directly from a calibrated pressurized tank the gas mixture should be CO mixed with Zero Air or N2 at the required ratio Zero air generators that condition ambient air by drying and removal of pollutants are available on the commercial market such as the Teledyne Instruments Model 701 Zero Air Generator We recommend this type of device in conjunction with bottled N2 for generating zero air Teledyne Analytical Instruments 161 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer 7 1 2 Calibration Gas Traceability All equipment used to produce calibration gases should be verified against standards of the National Institute for Standards and Technology
210. ff Valve should audibly change states If not Failed Valve Failed Relay Drive IC on Relay Board Failed Relay Board Faulty 12 VDC Supply PS2 Faulty Connectors Wiring D8 Green IR SOURCE IR_SOURCE CO2_ MEASURE Voltage displayed should change If not Failed IR Source Faulty 12 VDC Supply PS2 Failed Relay Board Failed IR Photo Detector Failed Sync Demod Board Faulty Connectors Wiring Teledyne Analytical Instruments 227 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 2 Gas Flow Problems The GFC 7000TA has two main gas flow path the sample gas flow path and the GFC purge gas flow path Both are controlled by a critical flow orifice Only the sample gas path is measured and reported When the IZS or zero span valve options are installed there are several subsidiary paths but none of those are displayed on the front panel or stored by the DAS With the O sensor option installed third gas flow controlled with a critical flow orifice is added but this flow is not measured or reported In general flow problems can be divided into three categories e Flow is too high e Flow is greater than zero but is too low and or unstable e Flow is zero no flow When troubleshooting flow problems it is crucial to confirm the actual flow rate without relying on the analyzer s flow display The use of an independent external flow meter to perform a flow check as described
211. fter the front panel power switch is turned ON With the Sample Inlet plugged the test function PRES should read about 10 Hg for a pump in good condition Readings above 10 Hg indicate that the pump needs rebuilding If the test function SAMP FL is greater than 10 cm min there is a leak in the pneumatic lines 10 2 3 Poor or Stopped Flow of Purge Gas If sufficient purge gas is not supplied to the GFC wheel housing cyclical fluctuations in readings at zero or low CO concentrations such as lt 100 ppm may occur These fluctuations are the result of changes in the CO concentration of the ambient atmosphere throughout the course of the day and night In isolated areas with relatively few people working nearby the ambient CO concentration will fall during the day and rise during the night as rate of photosynthesis of the plants in the surrounding area decreases and increases In a lab environment with a relatively high human occupancy the ambient CO2 concentration will increase during those parts of the day when the highest number of workers are present If the GFC wheel housing is allowed to fill with ambient air these natural diurnal fluctuations might be detected by the instrument and cause it s in its calculation of the CO2 concentration of the sample gas to drift Another possible symptom of poor or stopped purge gas flow would be the inability to measure zero concentrations accurately at the end of a work day on a system that was cal
212. g temperatures are cause for concern See Table 11 1 for WHEEL TEMP WARNING BOX TEMP If the box temperature is out of range check fan in the power supply module Areas to the side and rear of instrument should allow adequate ventilation See Table 11 1 for BOX TEMP WARNING If this drive voltage is out of range it may indicate one of several problems A poor mechanical connection between the various components in inside the detector housing PHT DRIVE An electronic failure of the IR Photo Detector s built in cooling circuitry or A temperature problem inside the analyzer chassis In this case other temperature warnings would also be active such as BENCH TEMP WARNING or BOX TEMP WARNING Teledyne Analytical Instruments 222 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer TEST FUNCTIONS INDICATED FAILURE S Values outside range indicate Contamination of the zero air or span gas supply Instrument is miss calibrated Blocked gas flow SLOPE Contaminated or leaking GFC wheel either chamber Faulty IR photo detector Faulty sample faulty IR photo detector pressure sensor P1 or circuitry Invalid M R ratio see above Bad incorrect span gas concentration due Values outside range indicate Contamination of the zero air supply Contaminated or leaking GFC wheel either chamber Faulty IR photo detector OFFSET 10 1 3 Using the Diagnostic Signal I O Function The Signal I O parameters fo
213. gnores the new settings TYE1 TYPE 2 ENTR EXIT SETUP X X HESSEN VARIATION TYPE 2 Press to change protocol type OFF ENTR EXIT gt NOTE While Hessen Protocol Mode can be activated independently for COM1 and COM2 The TYPE selection affects both Ports 6 15 4 5 Setting The Hessen Protocol Response Mode The Teledyne Instruments implementation of Hessen Protocol allows the user to choose one of several different modes of response for the analyzer Table 6 30 Teledyne Instruments Hessen Protocol Response Modes MODE ID MODE DESCRIPTION CMD This is the Default Setting Reponses from the instrument are encoded as the traditional command format Style and format of responses depend on exact coding of the initiating command BCC Responses from the instrument are always delimited with lt STX gt at the beginning of the response lt ETX gt at the end of the response followed by a 2 digit Block Check Code checksum regardless of the command encoding TEXT Responses from the instrument are always delimited with lt CR gt at the beginning and the end of the string regardless of the command encoding Teledyne Analytical Instruments 156 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To Select a Hessen response mode press SAMPLE CO2 X XXX RANGE 500 000 PPM P lt TST TST gt CAL SET SETUP X X COMMUNICATIONS MENU
214. h the vent line and alter the concentration of the span gas a gas line not less than 2 meters in length should be attached to the vent span outlet on the rear panel of the analyzer To prevent the buildup of back pressure this vent line should not be greater than 10 meters in length The following table describes the state of each valve during the analyzer s various operational modes Table 5 1 Ambient Zero Pressurized Span Valve Operating States wove vave CONDON ___ The minimum span gas flow rate required for this option is 800 cm min The state of the zero span valves can also be controlled e Manually from the analyzer s front panel by using the SIGNAL I O controls located under the DIAG Menu Section 6 13 2 e By activating the instrument s AutoCal feature Section 7 6 e Remotely by using the external digital control inputs Section 6 15 1 2 and Section 7 5 2 or e Remotely through the RS 232 485 serial I O ports see Appendix A 6 for the appropriate commands Teledyne Analytical Instruments 54 FAQ Model GFC7000TA Carbon Dioxide Analyzer SAMPLE GAS INLET PRESSURE SPAN INLET Shutoff Sample Cal Particulate Filter D r gt uj VENT SPAN 3 ae OUTLET co 22 2 W 5 e k Zero Span a o 2 S Val
215. hat is non repeatable and if that non repeatability seems to only occur at a certain time of day such as when worker occupancy is highest or lowest make sure the flow of purge gas to the GFC wheel housing has not stopped See Sections 10 2 2 and 11 1 7 for more information 10 3 3 Inability to Span Touchscreen SPAN Button Not Visible 1 Confirm that the carbon dioxide span gas source is accurate this can be done by switching between two span gas tanks If the CO concentration is different there is a problem with one of the tanks Check for leaks in the pneumatic systems as described in Section 9 3 3 Make sure that the expected span gas concentration entered into the instrument during calibration is the correct span gas concentration and not too different from expected span value This can be viewed via the RNG Menu See Section 6 7 Check to make sure that there is no ambient air or zero air leaking into span gas line Teledyne Analytical Instruments 236 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 3 4 Inability to Zero Touchscreen ZERO Button Not Visible 1 Confirm that there is a good source of zero air Dilute a tank of span gas with the same amount of zero air from two different sources If the CO2 Concentration of the two measurements is different there is a problem with one of the sources of zero air 2 Check for leaks in the pneumatic systems as described in Section 9 3 3 3 Ifthe analyz
216. he light beam is exposed to the measurement cell the N3 in the filter wheel does not absorb IR light This results in a fluctuation in the intensity of the IR light striking the photo detector See Figure 10 3 that results in the output of the detector resembling a square wave 9 1 3 2 The Measure Reference Ratio The Model GFC 7000TA determines the amount of CO in the sample chamber by computing the ratio between the peak of the measurement pulse CO2 MEAS and the peak of the reference pulse CO2 REF If no gases exist in the sample chamber that absorb light at 4 3m the high concentration of COz in the gas mixture of the reference cell will attenuate the intensity of the IR beam by 60 giving a M R ratio of approximately 2 4 1 Adding CO to the sample chamber causes the peaks corresponding to both cells to be attenuated by a further percentage Since the intensity of the light passing through the measurement cell is greater the effect of this additional attenuation is greater This causes CO2 MEAS to be more sensitive to the presence of CO in the sample chamber than CO2 REF and the ratio between them M R to move closer to 1 1 as the concentration of CO in the sample chamber increases Teledyne Analytical Instruments 189 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer IR unaffected by Nz in Measurement Cell of the GFC Wheel and no additional CO in the Sample Chamber CO2 MEAS 4 CO2 REF
217. he measured CO2 concentration is above the set point for EMITTER BUS The emitters of the transistors on pins 1 8 are bused The emitters of the transistors on pins 1 8 are bused together DC POWER 5 VDC Digital Ground The ground level from the analyzer s internal DC power supplies ALARM2 On whenever the measured CO2 concentration is above the set point for aa Teledyne Analytical Instruments 144 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 15 1 2 Control Inputs These inputs allow the user to remotely initiate Zero and Span calibrations Two methods for energizing the inputs is provided below the first using the internal 5V available on the CONTROL IN connector and the second if an external isolated supply is employed Table 6 25 Control Input Pin Assignments INPUT STATUS CONDITION WHEN ENABLED A EXTERNAL ZERO Zero calibration mode is activated The mode field of the display will CAL read ZERO CAL R EXTERNAL SPAN Span calibration mode is activated The mode field of the display will CAL read SPAN CAL R Pe ies SSCS a as C DIGITAL GROUND Provided to ground an external device e g recorder U DC power for Input Input for 5 VDC required to activate inputs A F This voltage can be pull ups taken from an external source or from the pin 7 Internal 5V Supply Internal source of 5V which can be used to activate inputs when connected to pin U There are tw
218. hean depen rei E n eats 45 AZ HGIOSSALY Sci E T AAE E E E E E st tadchabpbuceshayte eet ceecwss taser ued th beusayas iatvelt phevnadte 46 5 OPTIONAL HARDWARE AND SOFTWARE 0 ccccssecsseeesseeeseeeeneeeeneeeenseeeneeaeaseeeeseaeaseeeaeeaeaseeeseeaeaseeeaseeseeeeaseaease 51 5 1 Rack Mount Kits Options 20A 20B 21 ANd 23 oo eeecceeeeeeeeeeeeneeeeeeeaeeeseneeeeeeaaeeeseeaaeeeseeeeeeeenaeeesenaeeeeeneaeees 51 5 2 Current Loop Analog Outputs Option 41 eee ceeseeeeeeneeeeeeaeeeeeeaeeeeeneeeeesaaeeeeeeaaeeeseneeeesseeeeseaeeeeeeetess 51 5 2 1 Converting Current Loop Analog Outputs to Standard Voltage Outputs 52 5 3 Expendable Kits Options 42C 42D and 43 eeeecccceeeseeeeeeeeeeeeeeeeeeeeaeeeceeeeeeesaaeeeseeaaeeeseeeeeeesaeeesenaeeeeeeaeees 53 5 4 Calibration Valves Options ccs ic cretti apate ei Ta ara dee eaae iaeei atakara le iaire aileen ke sade deidaaaetaes 54 5 4 1 Ambient Zero Pressurized Span Valve ou eecceeesseeeceeneeeeeeneeeeeeeaeeeseneeeeesnaeeeseenaeeeseneeeeeseaeeseneeesnneeeeneaa 54 5 4 2 Ambient Zero Ambient Span Valve ee cceeeeeceeeeenneeeeeeeeeeeeeeeeeeaeeeeeeeeeeesaeeeseeaeeeeeneeeeesaeeeenaeeeenneeeeneaa 55 5 9 Communication Options t gei ani eea a aa a e aaa NE a EEEE aaa EERE a a 57 5 5 1 Communications Gables 0 s 0 c esscecceesentereeeegtedsesrnesenensetesgenentduneesasedseepesecnespasederapnesdeseeeeneedherpasedsearnsee 57 5 5 2 RS 232 Multidrop Option 62 ceeceeeceeeeeeceeeeeeeeeceee
219. here X is the command type one letter that defines the type of command Allowed designators are listed in Table 6 27 and Appendix A 6 ID is the analyzer identification number Section 6 11 1 Example the Command 200 followed by a carriage return would print the list of available commands for the revision of software currently installed in the instrument assigned ID Number 200 COMMAND is the command designator This string is the name of the command being issued LIST ABORT NAME EXIT etc Some commands may have additional arguments that define how the command is to be executed Press lt CR gt or refer to Appendix A 6 for a list of available command designators lt CR gt is a carriage return All commands must be terminated by a carriage return usually achieved by pressing the ENTER button on a computer Table 6 27 Command Types COMMAND COMMAND TYPE Calibration Diagnostic Logon Test measurement Variable S lt Aal r jo o Warning 6 15 2 4 Data Types Data types consist of integers hexadecimal integers floating point numbers Boolean expressions and text strings e Integer data are used to indicate integral quantities such as a number of records a filter length etc They consist of an optional plus or minus sign followed by one or more digits For example 7 72 123 are all valid integers e Hexadecimal integer data are used for the same purposes as integers Th
220. i EASA Ea NANE A A ENEDA ANAE EANA 258 LIST OF TABLES Table 2 1 Model GFC 7000TA Basic Unit Specifications 2 0 0 2 2 cc ecececccce cece eeeeeceeceeeeeeeeeeeecaeaeeeeeeeeeeecaeeeeeeeeeees 5 Table 3 1 Display and Touchscreen Control Description 2 0 2 2 cecececeeece cece eeeeceeeeeeeeeee eee eecaeaeeeeeeeseteesieaeeeeeeteee 13 Table 3 2 Rear Panel DeSCription ccecececccccee cece ee eeeeeee ce cette eeeeaeeeceeeeeeeesacaaeaeceeeeeegeenueeeeeeeeeeseeensieeeeeeetees 16 Table 3 3 Analog Input Pin ASSIQNMent 0 0 0 cc cceeeeeeeee cence ee eeeeee ee eeeeeeeeteeeaeeeeteeeaeeeeeneaeeeeeneaeeeteeeaeeeeenaeeeeeeaaees 21 Table 3 4 GFC 7000TA Analog Output Pin OUtS ieee ee eeeee ee eeeee ee teneeeeeeeneaeeeseneaeeeeeeneaeeeseeaneneeaeeeeeeaaees 22 Table 3 5 Status Output PINOUtS iire ereader eiiean er aea eee ee eea ey arena e e ea oaae aaaea eaei 23 Table 3 6 Control Inp tPiN O S s a aaa a aae A aa aa Aa E Eie a AeA E aara Aaa E a eaa eaaa 24 Table 3 7 Rear Panel Pneumatic COnnections ccc ceceeceeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeaeeeseeeaeeeeeeeaeeeseeeeeeeseeaeeeeeeaaees 26 Table 3 8 Front Panel Display During System Warm Up 0 000 ccceeeeeeeeeeeeee ee eeeeeeeeeeeeeeeeeseneaeeeseneaeeeteeaeeeeenaaees 34 Table 3 9 Possible Warning Messages at Start Up ecccceeeeeeeeeeceeeeeeeeeeeeeeeeaeeeseeeaeeesenaeeeseeeaeeeeeeaeeesenaaees 35 Table 5 1 Ambient Zero Pressurized Span Valve Operating States c
221. ial PC Personal Computer PCA Printed Circuit Assembly the PCB with electronic components ready to use PC AT Personal Computer Advanced Technology PCB Printed Circuit Board the bare board without electronic component PFA Per Fluoro Alkoxy an inert polymer one of the polymers that Du Pont markets as Teflon PLC Programmable Logic Controller a device that is used to control instruments based on a logic level signal coming from the analyzer PLD Programmable Logic Device PLL Phase Lock Loop PMT Photo Multiplier Tube a vacuum tube of electrodes that multiply electrons collected and charged to create a detectable current signal P N or PN Part Number PSD Prevention of Significant Deterioration PTFE Poly Tetra Fluoro Ethylene a very inert polymer material used to handle gases that may react on other surfaces one of the polymers that Du Pont markets as Teflon PVC Poly Vinyl Chloride a polymer used for downstream tubing Teledyne Analytical Instruments 48 FAQ Model GFC7000TA Carbon Dioxide Analyzer Term Description Definition Rdg Reading RS 232 specification and standard describing a serial communication method between DTE Data Terminal Equipment and DCE Data Circuit terminating Equipment devices using a maximum cable length of 50 feet RS 485 specification and standard describing a binary serial communication method among multiple devices at a data rate fa
222. ibrated at the beginning of a workday Although this could also be due to local fluctuations in ambient CO concentration during the day Teledyne Analytical Instruments 234 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 3 Calibration Problems 10 3 1 Miscalibrated There are several symptoms that can be caused by the analyzer being miss calibrated This condition is indicated by out of range Slopes and Offsets as displayed through the test functions and is frequently caused by the following 1 BAD SPAN GAS This can cause a large error in the slope and a small error in the offset Delivered from the factory the GFC 7000TA s slope is within 15 of nominal Bad span gas will cause the analyzer to be calibrated to the wrong value If in doubt have the span gas checked by and independent lab 2 CONTAMINATED ZERO GAS Excess H20 can cause a positive or negative offset and will indirectly affect the slope 3 Dilution calibrator not set up correctly or is malfunctioning This will also cause the slope but not the zero to be incorrect Again the analyzer is being calibrated to the wrong value 4 Too many analyzers on the manifold This can cause either a slope or offset error because ambient gas with its pollutants will dilute the zero or span gas Teledyne Analytical Instruments 235 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 3 2 Non Repeatable Zero and Span As stated earlier lea
223. ibration eee ccceecceeeesneeeeeneeeeeneeeeesaeeeseeeaeeeenaeeeessaaeeeseeeaeeesneesenenaeeseeeees 70 6 7 SETUP gt DAS Using the Data Acquisition System DAS eecceeeeeeeeeeenneeeeeneeeeeeaeeeeeeeaeeesneeeenenaeeeenenaees 71 6 7 1 DAS StU CUI iina sesso ee cae neee sites aeei a tl tiaa ia a eai a e etai itede iT 72 6 7 2 Default DAS Channels nissan n e a aaa O EEE NA aA aa Ca NE EEA ERA e a EE aa eE EEAS 74 6 7 3 Remote DAS Configuration rie a aa a a a a aaa a aaa a a a a aae 88 6 8 SETUP gt RNGE Analog Output Reporting Range Configuration seseeeesieeriieerirsrrirssrriresrrreerinsrerrens 89 6 8 1 Physical Range versus Analog Output Reporting RangeS esseessissesiissssiiesriireerinsrrirnsrirteerinnerrnnsrenns 90 6 8 2 Reporting Range Mode s cs c ecisesitesccccgecestne sted shee iadd deie iai idea i ieia iiaii 90 6 8 3 Single Range Mode SNGL iirinn ienee aana eNEAN AAE EAN TEANA AEE a FEN anaE 92 6 8 4 Dual Range Mode DUAL Jte ea aaa ae a i E a a aR a aa agin 93 6 8 5 Auto Range Mode AUTO ceceeceeesneeeeeenneeeeeneeeeeeaeeeceeeaeeeeaeeeeeeaaeeeseneeeeeseaeeeeeeaeeeseeaeesneeeesenaeeesenaeees 94 6 8 6 Range Units 3 ais ae nan A Git ei AREA eres Bs ieee 95 6 8 7 Dilton Rationi e ee a sateus sudan sensi cibes aai ONE siden vb dace AEEA SOA ANE eTe Aois 96 6 9 SETUP gt PASS Password Feature eeccceeesseceeeeeceeeenneeeceeaeeecnneeeeesaaeeeceeeaeeeenaeeeeesaaeeeseeeaeeesneeeenenaeeseaee
224. ice the o rings seal the gap between the walls of assembly housing and the critical flow orifice e Aspring Applies mechanical force needed to form the seal between the o rings the critical flow orifice and the assembly housing 9 2 2 1 Critical Flow Orifice The most important component of this flow control assembly is the critical flow orifice Critical flow orifices are a remarkably simple way to regulate stable gas flow rates They operate without moving parts by taking advantage of the laws of fluid dynamics By restricting the flow of gas though the orifice a pressure differential is created This pressure differential combined with the action of the analyzer s pump draws the gas through the orifice As the pressure on the downstream side of the orifice the pump side continues to drop the speed that the gas flows though the orifice continues to rise Once the ratio of upstream pressure to downstream Teledyne Analytical Instruments 194 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer pressure is greater than 2 1 the velocity of the gas through the orifice reaches the speed of sound As long as that ratio stays at least 2 1 the gas flow rate is unaffected by any fluctuations surges or changes in downstream pressure because such variations only travel at the speed of sound themselves and are therefore cancelled out by the sonic shockwave at the downstream exit of the critical flow orifice CRITICAL ORIFICE
225. ices or assemblies in anti static storage bags or bins and close the bag or bin before unplugging your wrist strap 6 Disconnecting your wrist strap is always the last action taken before leaving the workbench Teledyne Analytical Instruments 259 ESD Model GFC7000TA Carbon Dioxide Analyzer 11 4 2 3 Transferring Components from Rack to Bench and Back When transferring a sensitive device from an installed Teledyne Instruments analyzer to an Anti ESD workbench or back 1 Follow the instructions listed above for working at the instrument rack and workstation Never carry the component or assembly without placing it in an anti ESD bag or bin Before using the bag or container allow any surface charges on it to dissipate e If you are at the instrument rack hold the bag in one hand while your wrist strap is connected to a ground point e If you are at an anti ESD workbench lay the container down on the conductive work surface e In either case wait several seconds Place the item in the container Seal the container If using a bag fold the end over and fastening it with anti ESD tape e Folding the open end over isolates the component s inside from the effects of static fields e Leaving the bag open or simply stapling it shut without folding it closed prevents the bag from forming a complete protective envelope around the device 6 Once you have arrived at your destination allow any surface charges that may have built
226. igger events for certain control commands issued by the CPU They are stored in memory by the CPU and in most cases can be viewed but the user via the front panel display The CPU communicates with the user and the outside world in a variety of manners e Through the analyzer s touchscreen and LCD display over a clocked digital serial I O bus using a protocol called IC e RS 232 amp RS485 Serial I O channels via Ethernet Modbus Apicom or a terminal emulation program e Various DCV and DCA analog outputs and e Several sets of Digital I O channels Finally the CPU issues commands via a series of relays and switches also over the C bus located on a separate printed circuit assembly to control the function of key electromechanical devices such as heaters motors and valves Teledyne Analytical Instruments 197 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Analog Outputs RS232 COM2 USB COM sine jst iets tm Analog In Male Female port Ethernet l Optional I l as a arias 8 a ay Si aa Status Outputs g 4 ol Jive 1 6 N PC Bus 2 3 LVDS gt oa transmitter board Analog Extemal Outputs Digital 1 0 D A AID PC 104 Converter CPU Card V F Power Up Disk On Circuit Module MOTHER x Ech ene PC 104 Bus 4 Zero Span 1 l Themistor Internal C i Valve I Interface Digital 1 0 Sensor Inputs Bus Options
227. ilter The particulate filter should be inspected often for signs of plugging or contamination We recommend that when you change the filter handle it and the wetted surfaces of the filter housing as little as possible Do not touch any part of the housing filter element PTFE retaining ring glass cover and the o ring To change the filter 1 Turn OFF the analyzer to prevent drawing debris into the instrument 2 Open the GFC 7000TA s hinged front panel and unscrew the knurled retaining ring on the filter assembly 01628 Retaining Ring 01629 Window 024310100 O Ring PTFE Notches UP LEG PTFE Membrane Filter Element H FL 19 1pm FL6 5 um OR 58 Viton O Ring 03588 Bracket 03522 Body gt o X FT 8 Connector Fitting FT 8 Connector Fitting Figure 8 1 Sample Particulate Filter Assembly 3 Carefully remove the retaining ring PTFE o ring glass filter cover and filter element 4 Replace the filter being careful that the element is fully seated and centered in the bottom of the holder 5 Re install the PTFE o ring with the notches up install the glass cover then screw on the retaining ring and hand tighten Inspect the seal between the edge of filter and the o ring to assure a proper seal 6 Re start the Analyzer Teledyne Analytical Instruments 184 Maintenance Model GFC7000TA Carbon Dioxide Analyzer 8 3 2 Rebuilding the Sample Pump The diaphragm in the sample pump
228. ing called triboelectric charging which happens whenever the atoms of the surface layers of two materials rub against each other As the atoms of the two surfaces move together and separate some electrons from one surface are retained by the other Materials Makes Contact Materials Separate PROTONS 3 2 PROTONS 3 PROTONS 3 PROTONS 3 ELECTRONS 2 ELECTRONS 4 ELECTRONS 3 ELECTRONS 3 janetc Z NET CHARGE 0 NET CHARGE 0 NET CHARGE 1 NET CHARGE 1 Figure 11 1 Triboelectric Charging If one of the surfaces is a poor conductor or even a good conductor that is not grounded the resulting positive or negative charge cannot bleed off and becomes trapped in place or static The most common example of triboelectric charging happens when someone wearing leather or rubber soled shoes walks across a nylon carpet or linoleum tiled floor With each step electrons change places and the resulting electro static charge builds up quickly reaching significant levels Pushing an epoxy printed circuit board across a workbench using a plastic handled screwdriver or even the constant jostling of Styrofoam pellets during shipment can also build hefty static charges Table 11 1 Static Generation Voltages for Typical Activities MEANS OF GENERATION 65 90 RH 10 25 RH Walking across nylon carpet 1 500V 35 000V Walking across vinyl tile 250V 12 000V Worker at bench 100V 6 000V Teledyne Analytical Instruments 255 ESD
229. ion 9 1 Note The CALDAT STBZRO and STBSPN channels collect data based on events e g a calibration operation rather than a timed interval This does not represent any specific length of time since it is dependent on how often calibrations are performed Triggering Events and Data Parameters Functions for these default channels are LIST OF CHANNELS LIST OF PARAMETERS LIST OF PARAMETERS NAME CONC EVENT ATIMER E MODE AVG PRECISION 1 RS 232 REPORT OFF PARAMETER SMPLFLW CHANNEL ENABLED ON STORE NUM SAMPLES OFF MODE AVG NAME PNUMTC CAL HOLD OFF ON PRECISION 1 EVENT ATIMER STORE NUM SAMPLES OFF REPORT PERIOD 001 00 00 NO OF RECORDS 360 PARAMETER SMPLPRS RS 232 REPORT OFF PARAMETER SLOPE1 MODE AVG CHANNEL ENABLED ON MODE INST PRECISION 1 CAL HOLD OFF ORF PRECISION 3 STORE NUM SAMPLES OFF STORE NUM SAMPLES OFF NAME CALDAT EVENT SLPCHG REPORT PERIOD N A NO OF RECORDS 200 RS 232 REPORT OFF PARAMETER STABIL CHANNEL ENABLED ON MODE INST CAL HOLD OFF OFF PRECISION 2 PARAMETER ZSCNC1 STORE NUM SAMPLES OFF MODE INST NAME STBZRO PRECISION 1 EVENT EXITZR STORE NUM SAMPLES OFF REPORT PERIOD N A NO OF RECORDS 200 RS 232 REPORT OFF CHANNEL ENABLED ON CAL HOLD OFF OFF PARAMETER DETMES PARAMETER RATI gt NAME STBSPN MODE INST MODE INST EVENT EXITSP PRECISION 1 PRECISION 3 STORE NUM SAMPLES OFF REPORT PERIOD N A STORE NUM SAMPLES OFF NOCOF RECGRDS 20
230. ion runs automatically Electric offset for Reference signal DIAGDARK REF DARK OFFSET 0 0 mV Display tracks complete DIAG DARK DARK CAL 1 COMPLETE Electric offset for Measurement signal DIAGDARK MEAS DARK OFFSET 0 0 mV DIAG DARK DARK CALIBRATION ABORTED Teledyne Analytical Instruments 137 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 13 7 Pressure Calibration A sensor at the exit of the sample chamber continuously measures the pressure of the sample gas This data is used to compensate the final CO2 concentration calculation for changes in atmospheric pressure and is stored in the CPU s memory as the test function PRES also viewable via the front panel NOTE This calibration must be performed when the pressure of the sample gas is equal to ambient atmospheric pressure Before performing the following pressure calibration procedure disconnect the sample gas pump and the sample gas line vent from the sample gas inlet on the instrument s rear panel To cause the analyzer to measure and record a value for PRES press CO2 X XXX SAMPLE RANGE 500 000 PPM lt TST TST gt CAL SETUP Exit at any time to return to main the SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP menu SETUP X X SECONDARY SETUP MENU COMM VARS DIAG ALRM SETUP X X ENTER DIAG PA
231. is should be approximately 4 5V this voltage will vary with altitude With flow stopped sample inlet blocked the voltage should be approximately 1V If the voltage is incorrect the flow sensor is bad the board is bad or there is a leak upstream of the sensor 10 5 8 Motherboard 10 5 8 1 A D Functions The simplest method to check the operation of the A to D converter on the motherboard is to use the Signal I O function under the DIAG menu to check the two A D reference voltages and input signals that can be easily measured with a voltmeter 1 Use the Signal I O function See Section 10 1 3 and Appendix A to view the value of REF_4096_MV and REF_GND If both are within 3 mV of nominal 4096 and 0 and are stable 0 5 mV then the basic A D is functioning properly If not then the motherboard is bad 2 Choose a parameter in the Signal I O function such as SAMPLE_PRESSURE SAMPLE_FLOW CO2 MEASURE or CO REFERENCE Compare these voltages at their origin see interconnect drawing 04215 and interconnect list 04216 with the voltage displayed through the signal I O function If the wiring is intact but there is a large difference between the measured and displayed voltage 10 mV then the motherboard is bad Teledyne Analytical Instruments 245 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 5 8 2 Analog Outputs Voltage To verify that the analog outputs are working properly connect a voltmeter to the output in q
232. istor temperature sensor located on the optical bench near the front of the instrument could be at fault Unplug the connector labeled Bench and measure the resistance of the thermistor At room temperature it should have approximately 30K Ohms resistance near the 48 C set point it should have 12K ohms 10 4 1 3 GFC Wheel Temperature Like the bench heater above there are three possible causes for the GFC wheel temperature to have failed 1 The wheel heater has failed Check the resistance between pins 1 and 4 on the white five pin connector just below the sample temperature sensor on the bench pin 1 is the pointed end It should be approximately 275 ohms 2 Assuming that the IC bus is working and that there is no other failure with the relay board the solid state relay K1 on the relay board may have failed Using the WHEEL_HEATER parameter under the signal I O function as described above turn on and off K1 D2 on the relay board should illuminate as the heater is turned on Check the AC voltage present between Pin 1 and Pin 4 WARNING HAZARDOUS VOLTAGES ARE PRESENT DURING THIS TEST 3 If the relay has failed there should be no change in the voltage across pins 1 and 4 NOTE K1 is socketed for easy replacement 4 If K1 checks out OK the thermistor temperature sensor located at the front of the filter wheel assembly may have failed Unplug the connector labeled Wheel and measure the resistanc
233. ith the instrument Values outside these acceptable ranges indicate a failure of one or more of the analyzer s subsystems Functions whose values are still within the acceptable range but have significantly changed from the measurement recorded on the factory data sheet may also indicate a failure A worksheet has been provided in Appendix C to assist in recording the value of these test functions Table 11 2 contains some of the more common causes for these values to be out of range Teledyne Analytical Instruments 221 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Table 10 2 Test Functions Indicated Failures NENNE INDICATED FAILURE S TIME Time of day clock is too fast or slow To adjust See Section 6 6 Battery in clock chip on CPU board may be dead Incorrectly configured measurement range s could cause response problems with a Data logger or chart RANGE recorder attached to one of the analog output If the Range selected is too small the recording device will over range If the Range is too big the device will show minimal or no apparent change in readings STABIL Indicates noise level of instrument or CO2 concentration of sample gas See Section 10 4 2 for causes If the value displayed is too high the IR Source has become brighter Adjust the variable gain potentiometer on the sync demod board If the value displayed is too low or constantly changing and the CO2 RE
234. ivating the zero and span calibration modes ALARM Option for concentration alarms and system warnings ETHERNET Connector for network or Internet remote communication using Ethernet cable ANALOG IN Option for external voltage signals from other instrumentation and for logging these signals USB Com port optional connector for direct connection to laptop computer using USB cable Information Label Includes voltage and frequency specifications Teledyne Analytical Instruments 16 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 4 Internal Layout Figure 3 3 shows a top down view of the analyzer The shown configuration includes the Ethernet board IZS option zero air scrubber and an additional sample dryer See Section 5 for optional equipment LVDS Transmitter Board Motherboard REAR Disk on Module DOM with Software AC Power Receptacle CPU P Board Relay Board Optical Bench h Power Gas Outlet Supplies Gas Flow Sample Gas Sensor Temperature Assy Sensor Gas Flow Pump Sensor Assy Sample Gas Sample Pressure 5 Gas Sensor a Critical S Flow Q Orifice O Optical Purge Gas Bench Pressure Gas Inlet Regulator Assy GFC Motor IR Source Particulate Filter On Off Switch Touch Screen Control Module FRONT Figure 3 5 Internal Chassis Layout Teledyne Analytical Instruments 17 Getting Started Model GFC7000TA Carbon
235. ks both in the GFC 7000TA and in the external system are a common source of unstable and non repeatable readings 1 Check for leaks in the pneumatic systems as described in Section 9 3 3 Don t forget to consider pneumatic components in the gas delivery system outside the GFC 7000TA Such as e Achange in zero air source such as ambient air leaking into zero air line or e Achange in the span gas concentration due to zero air or ambient air leaking into the span gas line Once the instrument passes a leak check do a flow check See Section 9 3 4 to make sure adequate sample is being delivered to the sensor assembly A failing IR photo detector may be at fault Check the CO2 MEAS and CO2 REF test functions via the front panel display to make sure the signal levels are in the normal range See Appendix A and are quiet Confirm the sample pressure wheel temperature bench temperature and sample flow readings are correct and have steady readings Disconnect the exhaust line from the optical bench near the rear of the instrument and plug this line into the SAMPLE inlet creating a pneumatic loop The CO concentration either zero or span now must be constant If readings become quiet the problem is in the external pneumatics supplies for sample gas span gas or zero air If pressurized span gas is being used with a zero span valve option make sure that the venting is adequate See Section 3 1 2 and 5 4 If it is the zero point t
236. l Display oiar aaa ae ee ERE E RAAE EREA I E ARA AEREA RA 63 Miewing TEST FUNCIONS iatera rana aAA EA AAA AEAEE A RAEE aAA EEA ATER aI 66 Viewing and Clearing GFC 7000TA WARNING Messages ccceceeeeeeeceeeeeeeneeeeeeeaeeeeeeeaeees 68 Default DAS Channels SStUP ra rekri oaeee ae aare aaa La a a RACE a eae ee OT aaa raa 75 APICOM User Interface for DAS Configuration cece eens ee enneeeeeeneeeeeeeeeeesieeeeesneeeees 88 Analog Output Connector Pin Out eecceceeeeeeeeeeeeeeeeeeneeeeeseeeeeeeseeeaeeeeseneaeeeseneaeeeeeeeaeeeseeaeeees 89 Rear Panel Connector Pin Outs for COM1 amp COM2 in RS 232 Mode 103 CPU Connector Pin Outs for COM1 amp COM2 in RS 232 Mode eccceeetceeeeeeeteeeeeeenteeeeeeene 104 Multidrop LVDS PCA Seated On CPU c ccccccceceeeeeeeeceeceeeeeeeeeesceaeaeeeeeeesesecaeaeeeeeeeeeeteesaees 114 RS232 Multidrop PCA Host Analyzer Interconnect Diagram cccecceeeeseeeeeeeeeeeeeeeenneeeeeeaas 115 Setup for Calibrating Analog Voltage Outputs ee eect eee teee eter tte eeeetteeeeetneeeeetnaeeeeeeaa 130 Setup for Calibrating Current Outputs ccccccccceeceeeeeeeecaeceeeeeeeeecaeaeceeeeeeeesensaeaeeeeeeesetennaeas 132 Status Output CONNecCtor cccceceeeccece eee ee cece cecaeaeeeeeeeeeceaaaeceeeeeeeseesccaecaeeeeesesessccasaeeeeeeneeeeeas 143 COnmtrol INPUIS E EE Ae ee Acted ete eS te aoa trek area a EEA 145 APICOM Remote Control Program Interface cececeeeeeneeeee
237. l Instruments 240 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 5 Subsystem Checkout The preceding s of this manual discussed a variety of methods for identifying possible sources of failures or performance problems within the analyzer In most cases this included a list of possible causes This describes how to determine individually determine if a certain component or subsystem is actually the cause of the problem being investigated 10 5 1 AC Mains Configuration The analyzer is correctly configured for the AC mains voltage in use if 1 The Sample Pump is running 2 The GFC wheel motor is spinning LED s D1 amp D2 located on the synch demod PCA should be flashing 3 If incorrect power is suspected check that the correct voltage and frequency is present at the line input on the rear panel If the unit is set for 230 VAC and is plugged into 115VAC or 100VAC the sample pump will not start and the heaters will not come up to temperature If the unit is set for 115 or 100 VAC and is plugged into a 230 VAC circuit the circuit breaker built into the ON OFF Switch on the Front Panel will trip to the OFF position immediately after power is switched on 10 5 2 DC Power Supply If you have determined that the analyzer s AC mains power is working but the unit is still not operating properly there may be a problem with one of the instrument s switching power supplies The supplies can have two faults
238. l the expected value appears NOTE For this Initial Calibration it is important to independently verify the precise CO Concentration Value of the SPAN gas If the source of the Span Gas is from a Calibrated Bottle use the exact concentration value printed on the bottle Teledyne Analytical Instruments 38 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 Perform the Zero Span Calibration Procedure SAMPLE RANGE 500 000 PPM CO2 XXX X lt TST TST gt SETUP SAMPLE STABIL XXX X PPM CO2 XXX X lt TST TST gt SETUP ACTION Allow zero gas to enter the sample port at the rear of the instrument STABIL XXX X PPM CO2 XXX X ST TST gt CA SETUP M P CAL STABIL XXX X PPM CO2 XXX X TST TST gt ZERO CONC EXIT STABIL XXX X PPM CO2 XXX X ST TST gt ENTR CONC EXIT ACTION Allow span gas to enter the sample port at the rear of the instrument M P CAL STABIL XXX X PPM CO2 XXX X The SPAN button now appears during the transition from zero to IST TST gt SPAN CONC EXIT span If either the ZERO or SPAN buttons fail to appear see Section 11 for troubleshooting tips LC RANGE 500 000 PPM CO2 XXX X ST gt ENTR SPAN CONC RANGE 500 000 PPM CO2 XXX X ST gt ENTR CONC Set the Display to show the STABIL test function This function calculates the stability of the CO measurement Wait until STABIL falls below 1 0 ppm This may t
239. le gas API FIRMWARE Memory Handing Analyzer Operations Memory Handi ng Calibration Procedures PC 104 BUS ery Configuration Procedures Calibration Data Autonomic Systems System Status Data Diagnostic Routines ANALYZER HARDWARE Interface Handling Sensor input Data Measurement Touchscreen Display Algorithm Analog Output Data RS232 amp RS485 PC 104 BUS Extemal Digital I O Linearization Table Figure 9 18 Basic Software Operation 9 5 1 Adaptive Filter The GFC 7000TA software processes the CO2 MEAS and CO2 REF signals after they are digitized by the motherboard through an adaptive filter built into the software Unlike other analyzers that average the output signal over a fixed time period the GFC 7000TA averages over a set number of samples where each sample is 0 2 seconds This is technique is known as boxcar averaging During operation the software automatically switches between two different length filters based on the conditions at hand Once triggered the short filter remains engaged for a fixed time period to prevent chattering During conditions of constant or nearly constant concentration the software by default computes an average of the last 750 samples or approximately 150 seconds This provides the calculation portion of the software with smooth stable readings If a rapid change in concentration is detected the filter Teledyne Analytical Instruments 213 Theory of Operation
240. log Output Current Loop Range keai aiaia e adi dida aia ad aea aeh 125 Analog Output Pin Assignments 00 0 ccc ceeeeeeeeeeeeee ee aa a aa eai ai ii iaa 125 Voltage Tolerances for Analog Output Calibration ee cceeeeeeeeeeneeeeeeeeaeeeeeeaeeeeeeenaeeeeeeneeeeeeaas 129 Current Loop Output Calibration with Resistor cccccccceecceeceeeeeeeseeeeeaeeeeeeeseeenaaeeeeeeeenseesenneeeees 133 Test Parameters Available for Analog Output A4 cece ceeeeeeeeeeeeeeeeeeaeeeeeeneaeeeteeeaeeeteeaeeeeeeaaees 140 CO Concentration Alarm Default Settings eeccceeeeeeeeeeeeeeeeeeeeeeseneeeeeseeaeeeseeaeeeeeeaeeeeeenaeees 141 Status Output Pin ASSIGNMENTS sariro aan aA E PRAE R E AAA ATRO 144 Control input Pit Assignment serorei aii a EEE AAN TE AO AO 145 Terminal Mode Software Commands ccccccececeeeeeeeeeeceeeeseeeeeeeeeeeeaeeeseeeeeeeseneaeeeseeeaeeeseeaeeeteeaaees 146 command TYPES aore aara a a E E ATAO 147 Sefial nerace DOCUMENIS roaren EEA EE E A ARAO 153 RS 232 Communication Parameters for Hessen Protocol cccceeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeesnaeeeeeeaas 154 Teledyne Instruments Hessen Protocol Response Modes ccccccecceeeeeeseeeeeeeeeeeeeeeeeeneeeeeeaees 156 Default Hessen Status Bit Assignments ce ececee cence ee ente ee eee eaeeeeeeaeeeeeeaaeeeeeeaaeeeeeesaeeeeeneeeeeeaas 158 AUTOGAT MOES rikaa A A a A T dese seedasteaseiesdecaee Mecuenteces T 173 AutoCal ATTRIBUTE Setup Parameters
241. lue the ENTR button will re appear 6 1 Overview of Operating modes The GFC 7000TA software has a variety of operating modes Most commonly the analyzer will be operating in SAMPLE mode In this mode a continuous read out of the CO concentration is displayed on the front panel and output as an analog voltage from rear panel terminals calibrations can be performed and TEST functions and WARNING messages can be examined The second most important operating mode is SETUP mode This mode is used for performing certain configuration operations such as for the DAS system the reporting ranges or the serial RS 232 RS 485 Ethernet communication channels The SET UP mode is also used for performing various diagnostic tests during troubleshooting C02 387 499 PPM Hea o l Figure 6 1 Front Panel Display The Mode field of the front panel display indicates to the user which operating mode the unit is currently running Teledyne Analytical Instruments 63 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Besides SAMPLE and SETUP other modes the analyzer can be operated in are Table 6 1 Analyzer Operating modes DIAG One of the analyzer s diagnostic modes is being utilized See Section 6 13 M P CAL This is the basic multi point calibration mode of the instrument and is activated by pressing the CAL key SAMPLE Sampling normally flashing indicates adaptive filter is on SAMPLE A Indica
242. ment the sample chamber is heated to 48 C 8 degrees above the maximum suggested ambient operating temperature for the analyzer The heat source is a strip heater attached to the underside of the chamber housing The temperature of the sample chamber is sensed by a thermistor attached to the sample chamber housing Wheel Temperature To minimize the effects of temperature variations caused by the near proximity of the IR Source to the GFC wheel on the gases contained in the wheel it is also raised to a high temperature level Because the IR Source itself is very hot the set point for this heat circuit is 68 C The heat source is a cartridge heater implanted into the heat sync on the motor The temperature of the wheel motor assembly is sensed by a thermistor inserted into the heat sync Both heaters operate off of the AC line voltage supplied to the instrument 9 3 3 2 IR Source The light used to detect CO in the sample chamber is generated by an element heated to approximately 1100 C producing infrared radiation across a broad band This radiation is optically filtered after it has passed through the GFC Wheel and the sample chamber and just before it reaches the photo detector to eliminate all black body radiation and other extraneous IR emitted by the various components of those components Teledyne Analytical Instruments 200 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 3 3 3 GFC Wheel A synchronous AC m
243. ments 171 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer 7 5 1 Zero Span Calibration on Auto Range or Dual Ranges If the analyzer is being operated in dual range mode or auto range mode then the high and low ranges must be independently calibrated When the analyzer is in either dual or auto range modes the user must run a separate calibration procedure for each range After pressing the CAL CALZ or CALS buttons the user is prompted for the range that is to be calibrated as seen in the CALZ example below SAMPLE RANGE 500 000 PPM CO2 XXX X lt TST TST gt CALZ CALS SETUP SAMPLE STABIL XXX X PPM CO2 XXX X lt TST TST gt CALZ CALS SETUP ACTION Allow zero gas to enter the sample port at the rear of the instrument STABIL XXX X PPM M P CAL CO lt TST TST gt RANGE TO CAL LOW SAMPLE LOW HIGH ENTR RANGE TO CAL HIGH SAMPLE LOW HIGH ENTR ANALYZER ENTERS ZERO CAL MODE ZERO CALM RANGE 500 000 PPM CO2 XXX X lt TST TST gt ZERO SPAN CONC EXIT Continue Calibration as per Standard Procedure Set the Display to show the STABIL test function This function calculates the stability of the CO measurement Wait until STABIL falls below 1 0 ppm This may take several minutes Once this selection is made the calibration procedure continues
244. mmands in Terminal Mode Table 6 26 Terminal Mode Software Commands Control T Switches the analyzer to terminal mode echo edit If mode flags 1 amp 2 are OFF the interface can be used in interactive mode with a terminal emulation program Control C Switches the analyzer to computer mode no echo no edit CR A carriage return is required after each command line is typed into the terminal computer The carriage return command will not be sent to the analyzer to be executed until this is done On personal computers this is achieved by pressing the ENTER button Erases one character to the left of the cursor location backspace BS ESC Erases the entire command line escape ID CR This command prints a complete list of available commands along with the definitions of their functionality to the display device of the terminal or computer being used The ID number of the analyzer is only necessary if multiple analyzers are on the same communications line such as the multi drop setup Control C Pauses the listing of commands Control P Restarts the listing of commands Teledyne Analytical Instruments 146 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 15 2 3 Command Syntax Commands are not case sensitive and all arguments within one command i e ID numbers keywords data values etc must be separated with a space character All Commands follow the syntax X ID COMMAND lt CR gt W
245. mod board which is adjusted by the synch demod board based on a return signal called TEC control which alerts informs the synch demod board of the detector s temperature The warmer the detector the harder the coolers are driven PHT DRIVE is one of the Test Functions viewable by the user via the front panel Press lt TST or TST gt until it appears on the display 9 3 4 5 Dark Calibration Switch This switch initiates the Dark Calibration procedure When initiated by the user See Section 6 13 6 for more details the dark calibration process opens this switch interrupting the signal from the IR photo detector This allows the analyzer to measure any offset caused by the synch demod board circuitry 9 3 4 6 Electric Test Switch When active this circuit generates a specific waveform intended to simulate the function of the IR photo detector but with a known set of value which is substituted for the detector s actual signal via the dark switch It may also be initiated by the user See Section 6 13 5 for more details 9 3 5 Relay Board By actuating various switches and relays located on this board the CPU controls the status of other key components The relay board receives instructions in the form of digital signals over the I C bus interprets these digital instructions and activates its various switches and relays appropriately 9 3 5 1 Heater Control The two heaters attached to the sample chamber housing and the GFC wheel
246. modulation circuitry of the analyzer to latch onto the most stable part of each measurement and reference IR pulse Teledyne Analytical Instruments 201 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Measurement Pulses Reference Pulses IR Beam Pulses Segment Sensor TIT MR Sensor SLOSS T LO eens Figure 9 12 Segment Sensor and M R Sensor Output Schmidt Triggers To ensure that the waveforms produced by the Segment Sensor and the M R Sensor are properly shaped and clean these signals are passed through a set of Schmidt Triggers circuits 9 3 3 4 IR Photo Detector The IR beam is converted into an electrical signal by a cooled solid state photo conductive detector The detector is composed of a narrow band optical filter a piece of lead salt crystal whose electrical resistance changes with temperature and a two stage thermo electric cooler When the analyzer is on a constant electrical current is directed through the detector The IR beam is focused onto the detector surface raising its temperature and lowering its electrical resistance that results in a change in the voltage drop across the detector During those times that the IR beam is bright the temperature of the detector is high the resistance of the detector is correspondingly low and the its output voltage output is low During those times when the IR beam intensity is low or completely blocked by the GFC Wheel mask the temperature of the
247. motor are controlled by solid state relays located on the relay board The GFC wheel heater is simply turned on or off however control of the bench heater also includes circuitry that selects which one of its two separate heating elements is activated depending on whether the instrument is running on 100 VAC 115 VAC or 230 VAC line power 9 3 5 2 GFC Wheel Motor Control The GFC wheel operates from an AC voltage supplied by a multi input transformer located on the relay board The step down ratio of this transformer is controlled by factory installed jumpers to adjust for 100 VAC 115 VAC or 230 VAC line power Other circuitry slightly alters the phase of the AC power supplied to the motor during start up based on whether line power is 50Hz or 60 Hz Normally the GFC Wheel Motor is always turning while the analyzer is on A physical switch located on the relay board can be used to turn the motor off for certain diagnostic procedures Teledyne Analytical Instruments 205 Theory of Operation 9 3 5 3 Zero Span Valve Options Model GFC7000TA Carbon Dioxide Analyzer Any zero span valve options installed in the analyzer are controlled by a set of electronic switches located on the relay board These switches under CPU control supply the 12VDC needed to activate each valve s solenoid 9 3 5 4 IR Source The Relay board supplies a constant 11 5VDC to the IR Source Under normal operation the IR source is always on 9 3
248. n changed the unit MUST be recalibrated as the expected span values previously in effect will no longer be valid Simply entering new expected span values without running the entire calibration routine is not sufficient Teledyne Analytical Instruments 95 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 8 7 Dilution Ratio The dilution ratio is a software option that allows the user to compensate for any dilution of the sample gas before it enters the sample inlet Using the dilution ratio option is a 4 step process 1 Select reporting range units Follow the procedure in Section 6 8 6 2 Select the range Use the procedures in Sections 6 8 2 6 8 5 Make sure that the SPAN value entered is the maximum expected concentration of the undiluted calibration gas and that the span gas is either supplied through the same dilution inlet system as the sample gas or has an appropriately lower actual concentration For example with a dilution set to 100 a 10 ppm gas can be used to calibrate a 1000 ppm sample gas if the span gas is not routed through the dilution system On the other hand if a 1000 ppm span gas is used it needs to pass through the same dilution steps as the sample gas 3 Set the dilution factor as a gain e g a value of 20 means 20 parts diluting gas and 1 part of sample gas SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP C 3 PRIMARY SETUP MENU CFG DAS RN
249. n the pneumatic connections and gas lines of the analyzer itself the source of zero air span gases or sample gas delivery system Check for gas flow problems such as clogged or blocked internal external gas lines damaged seals punctured gas lines a damaged pump diaphragm etc 5 Follow the procedures defined in Section 11 5 for confirming that the analyzer s basic components are working power supplies CPU relay board sync demod board touchscreen display GFC wheel motor etc See Figure 3 3 for general layout of components and sub assemblies in the analyzer See the wiring list and diagram in Appendix D of this manual j Teledyne Analytical Instruments 217 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 1 1 Interpreting WARNING Messages The most common and or serious instrument failures will result in a warning message being displayed on the front panel Table 11 1 lists warning messages along with their meaning and recommended corrective action It should be noted that if more than two or three warning messages occur at the same time it is often an indication that some fundamental analyzer sub system power supply relay board motherboard has failed rather than indication of the specific failures referenced by the warnings In this case it is recommended that proper operation of power supplies See Section 10 5 2 the relay board See Section 10 5 6 and the A D Board See Section11 4 7 1 be confirmed
250. n when working with electronic assemblies will void the instrument warranty Refer to Section 11 for more information on preventing ESD damage Replacing the Disk on Module DOM will cause loss of all DAS data it may also cause loss of some instrument configuration parameters unless the replacement DOM carries the exact same firmware version Whenever changing the version of installed software the memory must be reset Failure to ensure that memory is reset can cause the analyzer to malfunction and invalidate measurements After the memory is reset the A D converter must be re calibrated and all information collected in Step 1 below must be re entered before the instrument will function correctly Also zero and span calibration should be performed 1 Document all analyzer parameters that may have been changed such as range auto cal analog output serial port and other settings before replacing the DOM 2 Turn off power to the instrument fold down the rear panel by loosening the mounting screws 3 When looking at the electronic circuits from the back of the analyzer locate the Disk on Module in the right most socket of the CPU board 4 The DOM should carry a label with firmware revision date and initials of the programmer 5 Remove the nylon standoff clip that mounts the DOM over the CPU board and lift the DOM off the CPU Do not bend the connector pins Teledyne Analytical Instruments 253 Troubleshooting Model GFC70
251. ning messages that may occur during start up Teledyne Analytical Instruments 34 Getting Started Model GFC7000TA Carbon Dioxide Analyzer Table 3 9 Possible Warning Messages at Start Up s o E O Teledyne Analytical Instruments 35 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 7 4 Functional Check 1 After the analyzer s components has warmed up for at least 30 minutes verify that the software properly supports any hardware options that were installed 2 Check to make sure that the analyzer is functioning within allowable operating parameters Appendix C includes a list of test functions viewable from the analyzer s front panel as well as their expected values These functions are also useful tools for diagnosing performance problems with your analyzer Section11 1 2 The enclosed Final Test and Validation Data sheet part number 04307 lists these values before the instrument left the factory To view the current values of these parameters press the following button sequence on the analyzer s front panel Remember until the unit has completed its warm up these parameters may not have stabilized SAMPLE CO2 XXX X RANGE 500 000 PPM lt TST TST gt CAL Toggle lt TST TST gt buttons to scroll through list of SETUP RANGE RANGE1 RANGE2 O2 RANGE STABIL MEAS REF PRE Refer to Table 6 2 for SAMP FL definitions of SAMP TEMP these test BE
252. nnels CONC_OUT_1 Sets the basic electronic configuration of the A1 analog output CO2 There are three options Range Selects the signal type voltage or current loop and full scale level of the output REC_OFS Allows setting a voltage offset not available wnen RANGE is set to CURRent loop Auto_CAL Performs the same calibration as AOUT CALIBRATED but on this one channel only NOTE Any change to RANGE or REC_OFS requires recalibration of this output CONC_OUT_2 Same as for CONC_OUT_1 but for analog channel 2 COz TEST OUTPUT Same as for CONC_OUT_1 but for analog channel 4 TEST AIN CALIBRATED Shows the calibration status YES NO and initiates a calibration of the analog to digital converter circuit on the motherboard XIN1 XIN8 For each of 8 external analog input channels shows the gain offset engineering units and whether the channel is to show up as a Test function Teledyne Analytical Instruments 123 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To configure the analyzer s three analog outputs set the electronic signal type of each channel and calibrate the outputs This consists of e Selecting an output type voltage or current if an optional current output driver has been installed and the signal level that matches the input requirements of the recording device attached to the channel See Section 6 13 4 1 e Calibrating the output channel
253. nt output by 100 10 or 1 counts The resulting change in output voltage is displayed in the upper line Continue adjustments until the correct current is measured with the current meter DIAG AIO CONC_OUT_2 ZERO 9731 mV U100 UP10 UP DOWN DN10 D100 ENTR EXIT DIAG AIO CONC_OUT_2 CALIBRATED YES lt SET CAL EXIT EXIT ignores the new setting ENTR accepts the new setting If a current meter is not available an alternative method for calibrating the current loop outputs is to connect a 250 Q 1 resistor across the current loop output Using a voltmeter connected across the resistor follow the procedure above but adjust the output to the following values Table 6 21 Current Loop Output Calibration with Resistor Full scale Voltage for 2 20 mA Voltage for 4 20 mA measured across resistor measured across resistor ull 1 0V 100 50V Teledyne Analytical Instruments 133 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 13 4 5 AIN Calibration This is the sub menu to conduct the analog input calibration This calibration should only be necessary after major repair such as a replacement of CPU motherboard or power supplies Activate the ANALOG 1 O CONFIGURATION MENU See Section 6 13 1 then press seme FROM ANALOG O CONFIGURATION MENU DIAG ANALOG O CONFIGURATION Exit at any time to return to the main DIAG menu PREV N
254. nt the more the mirror moves and the more current is fed into the winding by the feedback control loop A sensor measures the amount of current generated by the feedback control loop which is directly proportional to the concentration of oxygen within the sample gas mixture see Figure 5 7 Teledyne Analytical Instruments 58 FAQ Model GFC7000TA Carbon Dioxide Analyzer Figure 5 5 Oxygen Sensor Principle of Operation 5 6 1 2 Operation within the GFC 7000TA Analyzer The oxygen sensor option is transparently integrated into the core analyzer operation All functions can be viewed or accessed through the front panel just like the functions for CO3 e The O concentration is displayed in the upper right hand corner alternating with CO2 concentration e Test functions for Oz slope and offset are viewable from the front panel along with the analyzer s other test functions e OQ sensor calibration is performed via the front panel CAL function and is performed in a nearly identical manner as the standard CO calibration See Section 3 3 1 for more details e Stability of the O2 sensor can be viewed via the front panel see Section 3 3 2 1 e A signal representing the currently measured O2 concentration is available The O concentration range is 0 100 user selectable with 0 1 precision and accuracy and is available to be output via the instrument s analog output channel A3 See Section 6 13 4 The temperature o
255. nt to the specific application Only the reporting range of the analog outputs is scaled the physical range of the analyzer and the readings displayed on the front panel remain unaltered 6 8 2 Reporting Range Modes The GFC 7000TA provides three analog output range modes to choose from e Single range SNGL mode sets a single maximum range for the analog output If single range is selected See Section 6 78 3 both outputs are slaved together and will represent the same measurement span e g 0 50 ppm however their electronic signal levels may be configured for different ranges e g 0 10 VDC vs 0 1 VDC See Section 6 9 4 1 Dual range DUAL allows the A1 and A2 outputs to be configured with different measurement spans See Section 6 8 4 as well as separate electronic signal levels See Section 6 9 4 1 e Auto range AUTO mode gives the analyzer to ability to output data via a low range and high range When this mode is selected See Section 6 8 5 the GFC 7000TA will automatically switch between the two ranges dynamically as the concentration value fluctuates Range status is also output via the external digital I O status outputs See Section 6 15 1 1 Teledyne Analytical Instruments 90 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To select the Analog Output Range Type press SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SAMPLE ENTER SETUP PASS 818
256. ntents Model GFC7000TA Carbon Dioxide Analyzer Figure 9 6 Chopped IR Sigra arn Teee ae teeta sere let Ste ee ae ee 191 Figure 9 7 Internal Pneumatic Flow Basic Configuration 0 ccceeeeeceeeeseeeeeeeeneeeeeeenieeeeeeneeeeeenieeeesenaaes 194 Figure 9 8 Flow Control Assembly amp Critical Flow Orifice 20 0 eee eeceeeeeenneeeeeenneeeeeenaeeeeeeiaeeeeeenaeeeeneaes 195 Figure 9 9 GFC 7000TA Electronic Block Diagram ececececeeeceeeeeeeeeneeeeeeineee ee tiieeeeeetieeeeetieeeeenieeeeeta 198 Figure 9 10 CPU BOAR sit eases terete sat A seit aldo ca ieee eee edie eden teats aerate teatro Sales 199 Figure 9 11 GEC Lights Mask Aiea Soins Sisbh eer tite dee A AEA ie ae eit ea a et See 201 Figure 9 12 Segment Sensor and M R Sensor Output eceeceeee eects eee ee ee teeeeeteeeeeteeeeeseeeereaa 202 Figure 9 13 GFC 7000TA Sync Demod Block Diagram cc cece ener ee eeteee ee eaeeeeeteeeeeeieeeeesneeeeeeae 203 Figure 9 14 SAM ple Ge FOG TAMING ses 2 5 eh ects ave Haden ge eat hts ae TAEA TEET TE E 204 Figure 9 15 Location of relay board Status LED S 200 0 eecceeeeeeeeeee cette ee ee eee eeeesaeeeeeeaeeeeeeaeeeeneeiaeeeeeeaes 207 Figure 9 16 Power Distribution Block Diagrami esaii iaa Ta i eeenneeeeeeceeeeesaeeeseeaeeeeeeieeeeeeiaeeeeeeaes 211 Figure 9 17 Front Panel and Display Interface Block Diagram 0 ccccceeeeteeeeeeeeeeeeeeneeeeeeaaeeeeeetaeeeeeeaaes 212 Figure 9 18 Basic Software Operatia oier raaa anora AA
257. nternet Can only be edited when DHCP is set to OFF Also a string of four packets of 1 to 3 numbers each e g 255 255 252 0 that identifies the LAN to which the device 0 0 0 0 is connected SUBNET MASK All addressable devices and computers on a LAN must have the same subnet mask Any transmissions sent to devices with different subnets are assumed to be outside of the LAN and are routed through the gateway computer onto the Internet 3000 This number defines the terminal control port by which the TCP PORT instrument is addressed by terminal emulation software such as Internet or Teledyne s APICOM T100 The name by which your analyzer will appear when HOST NAME addressed from other computers on the LAN or via the Internet To change see Section 6 11 6 3 Do not change the setting for this property unless instructed to by Teledyne Customer Service personnel NOTE It is a good idea to check these settings the first time you power up your analyzer after it has been physically connected to the LAN Internet to make sure that the DHCP has successfully downloaded the appropriate information from you network server s If the gateway IP instrument IP and the subnet mask are all zeroes e g 0 0 0 0 the DCHP was not successful You may have to manually configure the analyzer s Ethernet properties See your network administrator Teledyne Analytical Instruments 109
258. o Cal Decreasing Detector deteriorating Optics getting dirty or contaminated Source Aging Increasing Detector deteriorating Contaminated zero gas H20 Source Agin Zero Cal gmg EOS Detector deteriorating Decreasing GFC Wheel Leaking Pneumatic Leaks MR RATIO Contaminated zero gas CO2 Source Aging Increasing Pneumatic Leaks instrument amp sample system Calibration system deteriorating Span Cal Source Aging Decreasing GFC Wheel Leaking Calibration system deteriorating gt Pneumatic Leak between sample inlet and Sample Cell Increasing gt 1 f F Change in sampling manifold PRES Sample Dirty particulate filter D Pneumatic obstruction between sample inlet and Sample ecreasing gt 1 Cell Obstruction in sampling manifold Any but with Mechanical Connection between IR Detector and Sample PHT DRIVE Bench Temp at Increasing Cell deteriorating 48 C IR Photodetector deteriorating Increasing See MR Ratio Zero Cal Decreasing above OFFSET Zero Cal Decreasing See MR Ratio Zero Cal Increasing above Increasing See MR Ratio Span Cal Decreasing above SLOPE Span Cal l Decreasing See MR Ratio Span Cal Increasing above Teledyne Analytical Instruments 183 Maintenance Model GFC7000TA Carbon Dioxide Analyzer 8 3 Maintenance Procedures The following procedures are to be performed periodically as part of the standard maintenance of the Model GFC 7000TA 8 3 1 Replacing the Sample Particulate F
259. o SAMPLE inlet Normal State Zero Span Open to IZS inlet Sample Cal Open to ZERO SPAN valve ZERO CAL Zero Span Open to IZS inlet Sample Cal Open to ZERO SPAN valve SPAN CAL Zero Span Open to PRESSURE SPAN inlet j Teledyne Analytical Instruments 55 FAQ Model GFC7000TA Carbon Dioxide Analyzer The minimum span gas flow rate required for this option is 800 cm min The state of the zero span valves can also be controlled e Manually from the analyzer s front panel by using the SIGNAL I O controls located under the DIAG Menu Section 6 13 2 e By activating the instrument s AutoCal feature Section 7 6 e Remotely by using the external digital control inputs Sections 6 15 1 2 and 7 5 2 or e Remotely through the RS 232 485 serial I O ports see Appendix A 6 SAMPLE GAS INLET PRESSURE SPAN INLET Sample Cal Particulate Filter VENT SPAN 3 5e OUTLET as 2 2 ao mr Sa te Zero Span a oz Os Valve gr 6 lt IZS INLET lt S W a EXHAUST GAS OUTLET 7 S g aig a l Flow P SAMPLE 7 8 Q 5 S Sample Gas ow Pressure PATAR 2S 22 Flow Control Sensor PCA SENSOR cet i ERE g 6 2 O3 FLOW U SENSOR PURGE GAS INLET g 5 Purge Gas Pressu
260. o methods to activate control inputs The internal 5V available from the pin is the most convenient method Figure 6 18 However to ensure that these inputs are truly isolated a separate external 5 VDC power supply should be used CONTROL IN CONTROL IN A B C D E F4 U A B C D E F 4 U LI 5 VDC Power Supply oOJmN Z gt vv OUmN Z gt vvv I Local Power Connections External Power Connections Figure 6 14 Control Inputs Teledyne Analytical Instruments 145 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 15 2 Remote Operation Using the External Serial I O 6 15 2 1 Terminal Operating Modes The Model GFC 7000TA can be remotely configured calibrated or queried for stored data through the serial ports As terminals and computers use different communication schemes the analyzer supports two communicate modes specifically designed to interface with these two types of devices e Computer mode is used when the analyzer is connected to a computer with a dedicated interface program such as APICOM More information regarding APICOM can be found in later in this or on the Teledyne Instruments website at http www teledyne api com software apicom e Interactive mode is used with a terminal emulation programs such as HyperTerminal or a dumb computer terminal The commands that are used to operate the analyzer in this mode are listed in Table 6 26 6 15 2 2 Help Co
261. ock that supports the AutoCal timer time of day TEST function and ions Model GFC7000TA Carbon Dioxide Analyzer time stamps on most COM port messages To set the time of day press Enter Current Time of Day SETUP X X TIME 12 00 ENTR EXIT SETUP X X3 TZA p TIME 12 00 ENTR EXIT TIME DATE SAMPLE RANGE 500 000 PPM X XXX lt TST TST gt CAL ETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT SETUP X X TIME OF DAY CLOCK Enter Current Date of Year TIME DATE EXIT ESS a SETUP X X DATE 01 JAN 02 01 JAN 0 2 ENTR EXIT Os ee SETUP X X DATE 01 JAN 02 0 1 JAN O 2 ENTR EXIT EXIT SETUP X X TIME OF DAY CLOCK SETUP X X EXIT returns to the main SAMPLE display CFG DAS RNGE PASS CLK MORE EXIT A Tel edyne Analytical Instruments Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer In order to compensate for CPU clocks which run faster or slower you can adjust a variable called CLOCK_ADJ to speed up or slow down the clock by a fixed amount every day To change this variable press SAMPLE RANGE 500 000 PPM X XXX lt TST TST gt CAL SETUP E SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT SETUP X X SECONDARY SETUP MENU COMM VARS DIAG EXIT SETUP X 0 DAS_HOLD_OFF 15 0 Minutes NEXT JUMP EDIT PRNT EXIT SETUPX
262. ocol allows a multi instrument configuration on a single communications PROTOCOL channel Multidrop requires the use of instrument IDs ENABLE 64 Enables to send a modem initialization string at power up Asserts certain lines in the MODEM RS 232 port to enable the modem to communicate ERROR gt 128 Fixes certain types of parity errors at certain Hessen protocol installations CHECKING XON XOFF 5 256 Disables XON XOFF data flow control also known as software handshaking HANDSHAKE HARDWARE Enables CTS RTS style hardwired transmission handshaking This style of data y g y HANDSHAKE 8 transmission handshaking is commonly used with modems or terminal emulation protocols as well as by Teledyne Instruments APICOM software HARDWARE 512 Improves data transfer rate when on of the com ports FIFO COMMAND 4096 Enables a command prompt when in terminal mode PROMPT 1 Modes are listed in the order in which they appear in the SETUP gt MORE gt com gt COM 1 OR 2 gt MODE menu The default sting for this feature is ON Do not disable unless instructed to by Teledyne Instruments Customer Service personnel Teledyne Analytical Instruments 106 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Press the following touchscreen buttons to select a communication mode for one of the com Ports such as the following example where HESSEN PROTOCOL mode is enabled SAMPLE RANGE 500 000 PPM CO2 X X
263. ode j Teledyne Analytical Instruments 232 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer e Place a finger over an Exhaust outlet on the rear panel of the instrument e f gas is flowing through the analyzer you will feel pulses of air being expelled from the Exhaust outlet 4 If gas flows through the instrument when it is disconnected from its sources of zero air span gas or sample gas the flow problem is most likely not internal to the analyzer Check to make sure that e All calibrators generators are turned on and working correctly e Gas bottles are not empty or low e Valves regulators and gas lines are not clogged or dirty 10 2 2 2 Low Flow 1 Check if the pump diaphragm is in good condition If not rebuild the pump See Section 9 3 2 Check the Spare Parts List for information of pump rebuild kits 2 Check for leaks as described in Section 9 3 3 Repair the leaking fitting line or valve and re check 3 Check for the sample filter and the orifice filter for dirt Replace filters See Sections 9 3 1 and 11 5 1 respectively 4 Check for partially plugged pneumatic lines orifices or valves Clean or replace them 5 Ifan IZS option is installed in the instrument press CALZ and CALS If the flow increases then suspect a bad sample cal valve 10 2 2 3 High Flow The most common cause of high flow is a leak in the sample flow control assembly or between there and the pump If no leaks o
264. of the day Any new sequence which is initiated whether from a timer the COM ports or the contact closure inputs will override any sequence which is in progress NOTE If at any time an illegal entry is selected Example Delta Days gt 367 the ENTR button will disappear from the display Teledyne Analytical Instruments 174 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer To program the Sequence SAMPLE RANGE 500 000 PPM CO2 X XXX l SETUP X X STARTING TIME 14 15 lt TST TST gt CAL CALZ CALS SETUP oe a eee lt SET SET gt EDIT EXIT SETUP X X PRIMARY SETUP MENU SETUP X X DELTA DAYS 1 CFG ACAL DAS RNGE PASS CLK MORE EXIT lt SET SET gt EDIT EXIT Toggle SETUP X X SEQ 1 DISABLED buttons to E set NEM MODE egit SETUP X X DELTA DAYS 1 auinberoi days 0 0 2 ENTR EXIT bemsh procedures SETUPX X SEQ 2 DISABLED 1 367 PREV NEXT MODE EXIT SETUP X X DELTA DAYS 2 al lt SET SET gt EDIT EXIT SETUP X X MODE DISABLED NEXT ENTR EXIT SETUP X X DELTA TIME00 00 lt SET SET gt EDIT EXIT SETUP XIX MODE ZERO Toggle buttons to set PREV NEXT ENTR EXIT SETUP X X DELTA TIME 00 00 delay time for each iteration of the 0 0o 3 o0 ENTR EXIT gt Sequence SETUP XX MODE ZERO SPAN HH MM 0 24 00 PREV ENTR EXIT SETUP X X DELTA TIEM
265. of zero air here This inlet supplies purge air to the GFC wheel housing see Section 10 2 3 PURGE IN Connect a source of dried air that has been scrubbed of COz Teledyne Analytical Instruments 26 Getting Started Model GFC7000TA Carbon Dioxide Analyzer VENT here if input is pressurized SAMPLE GAS l Source of Calibrated CO Gas calibration at span gas I concentration Removed during EXHAUST VENT SPAN Chassis PRESSURE SPAN IZS PURGE LINE Figure 3 9 Pneumatic Connections Basic Configuration Using Bottled Span Gas Source of VENT here if input is pressurized SAMPLE GAS e 21T l Calibrated Removed during calibration CO Gas Model T700 gas at 100x span gas Dilution l concentration Calibrator l m m m m m SAMPLE lt f xHausT I VENT SPAN Chassis fj PRESSURE SPAN I IzS PURGE LINE Figure 3 10 Pneumatic Connections Basic Configuration Using Gas Dilution Calibrator Teledyne Analytical Instruments Getting Started Model GFC7000TA Carbon Dioxide Analyzer 7 Attach a sample inlet line to the sample inlet port The SAMPLE input line should not be more than 2 meters long NOTE Ideally the pressure of the sample gas should be at ambient pressure 0 psig Maximum pressure of sample gas should not exceed 1 5 in Hg over ambient In applications where the sample g
266. on is useful for performing predictive diagnostics as part of a regular maintenance schedule See Section 9 1 STBZRO Logs the concentration stability the electronic output of the IR detector of the most recent measure phase and the measure reference ratio every time the instrument exits the zero calibration mode Data from the last 200 zero calibrations is stored A time and date stamp is recorded for every data point logged This information is useful for performing predictive diagnostics as part of a regular maintenance schedule See Section 9 1 STBSPN Logs the electronic output of the IR detector of the most recent measure phase and the measure reference ratio every time the instrument exits span calibration mode Data from the last 200 zero calibrations is stored A time and date stamp is recorded for every data point logged This information is useful for performing predictive diagnostics as part of a regular maintenance schedule See Section 9 1 Teledyne Analytical Instruments 74 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer TEMP Samples the analyzer s bench temperature box temperature and PHT cooler drive voltage every five minutes and records an average once every six hours Data from the last 400 averaging periods is recorded A time and date stamp is recorded for every data point logged This information is useful for performing predictive diagnostics as part of a regular maintenance schedule See Sect
267. or improperly attached to the sample chamber Bench temp too high REAR BOARD NOT Motherboard not detected on Warning only appears on serial i o com port s DET power up Front panel display will be frozen blank or will not respond Massive failure of mother board 2 A RELAY BOARD The CPU cannot communicate with C bus failure WARN the Relay Board Failed relay board 7 Loose connectors wiring Failed sample pump Blocked sample inlet gas line Dirty particulate filter Leak downstream of critical flow orifice Failed flow sensor circuitry SAMPLE PRES Sample Pressure is lt 10 in Hg or If sample pressure is lt 10 in hg SAMPLE FLOW Sample flow rate is lt 500 cc min or WARN gt 1000 cc min WARN gt 35 in Hg o Blocked particulate filter Normally 29 92 in Hg at sea level o Blocked sample inlet gas line decreasing at 1 in Hg per 1000 ft of o Failed pressure sensor circuitry altitude with no flow pump If sample pressure is gt 35 in hg disconnected o Pressurized sample gas Install vent o Blocked vent line on pressurized sample zero span gas supply o Bad pressure sensor circuitry Teledyne Analytical Instruments 220 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Table 11 1 Warning Messages Indicated Failures cont WARNING MESSAGE SAMPLE TEMP Sample temperature is lt 10 C or gt Ambient temperature outside of specified range WARN 100 C Failed bench heater
268. orts One is used to supply purge air to the GFC wheel The other may be used to attach a pressure gauge To adjust the internal purge air pressure of the GFC 7000TA Turn off the instrument Remove the source of zero air attached to the purge line inlet port at the back of the analyzer Remove the analyzer s top cover Remove the cap from the second unused output port on the pressure regulator Gre OO a Attach a pressure gauge capable of measuring in the 5 10 psig range with 0 5 psig resolution to the port Teledyne Analytical Instruments 32 Getting Started Model GFC7000TA Carbon Dioxide Analyzer Turn the instrument on Make sure the zero air supply to the analyzer s purge line inlet is supplying gas at a stable pressure above 7 5 psig 8 Adjust the GFC 7000TA s pressure regulator until the attached gauge reads 7 5 psig 9 Turn off the instrument 10 Remove the source of zero air attached to the purge line inlet port at the back of the analyzer 11 Remove the pressure gauge and reattach the end cap removed in step 4 above 12 Replace the analyzer s top cover 3 7 Initial Operation If you are unfamiliar with the GFC 7000TA theory of operation we recommend that you read Section 10 For information on navigating the analyzer s software menus see the menu trees described in Appendix A NOTE The analyzer s cover must be installed to ensure that the temperatures of the GFC wheel and abso
269. ot used Ground Not used A1 A2 A3 A4 1 Output A3 is only used when the Oz sensor option is installed See Figure 3 2 for the location of the analog output connector on the instrument s rear panel Teledyne Analytical Instruments 125 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 13 4 1 Analog Output Signal Type and Range Span Selection To select an output signal type DC Voltage or current and level for one output channel activate the ANALOG I O CONFIGURATION MENU See Section 6 13 1 then press FROM ANALOG I O CONFIGURATION MENU DIAG ANALOG I O CONFIGURATION PREV NEXT ENTR DIAG AIO AOUTS CALIBRATED NO lt SET SET gt CAL Press SET gt to select the analog output channel to be configured Press EDIT to continue DIAG AIO CONC_OUT_2 5V CAL lt SET SET gt EDIT DIAG AIO CONC_OUT_2 RANGE 5V EDIT DIAG AIOOUTPUT RANGE 5V To set the signal level and type of the selected channel Pressing ENTR records the new setting DIAG AIOOUTPUT RANGE 10V and returns to the previous menu Pressing EXIT ignores the new setting and ENTR EXIT returns to the previous menu 6 13 4 2 Analog Output Calibration Mode The analog outputs can be calibrated automatically or manually In its default mode the instrument is configured for automatic calibration of all channels Manual calibration should be used for the 0 1V range or in cases where the outputs must be closely matched
270. oting tips M P CAL STABIL XXX X PPM SAMPLE RANGE 500 000 PPM CO2 XXX X lt IST TST gt CALZ CALS SETUP SAMPLE STABIL XXX X PPM CO2 XXX X lt TST TST gt CALZ CALS SETUP ACTION Allow zero gas to enter the sample port at the rear of the instrument M P CAL STABIL XXX X PPM COP XXX X lt TST TST gt M P CAL STABIL XXX X PPM CO2 XXX X lt TST TST gt ZERO CONC EXIT STABIL XXX X PPM CO2 XXX X lt TST TST gt ENTR CONC EXIT ACTION Allow span gas to enter the sample port at the rear of the instrument CO2 XXX X lt TST TST gt EXIT RANGE 500 000 PPM CO2 XXX X ST gt ENTR SPAN CONC RANGE 500 000 PPM CO2 XXX X IST gt ENTR CONC Model GFC7000TA Carbon Dioxide Analyzer Set the Display to show the STABIL test function This function calculates the stability of the CO measurement Wait until STABIL falls below1 0 ppm This may take several minutes Press ENTR to changes the OFFSET amp SLOPE values for the CO measurements Press EXIT to leave the calibration unchanged and return to the previous menu The value of STABIL may jump significantly Wait until it falls back below 1 0 ppm This may take several minutes Press ENTR to change the OFFSET amp SLOPE values for the CO measurements Press EXIT to leave the calibration unchanged and return to the previous menu EXIT returns to the main SAMPLE display Teledyne Analytical
271. otor turns the GFC wheel motor For analyzers operating on 60Hz line power this motor turns at 1800 rom For those operating on 50Hz line power the spin rate is 1500 rpm The actual spin rate is unimportant within a large rate since a phase lock loop circuit is used to generate timing pulses for signal processing In order to accurately interpret the fluctuations of the IR beam after it has passed through the sample gas the GFC wheel several other timing signals are produced by other photo emitters detectors These devices consist of a combination LED and detector mounted so that the light emitted by the LED shines through the same mask on the GFC wheel that chops the IR beam Detection Beam shining r through MEASUREMENT ris side of GFC Wheel Detection Beam shining 4 through REFERENCE side of GFC Wheel IR Detection Ring SN Segment Sensor Ring ee Ss DAN a M R Sensor Ring a i a Figure 9 11 GFC Light Mask M R Sensor This emitter detector assembly that produces a signal that shines through a portion of the mask that allows light to pass for half of a full revolution of the wheel The resulting light signal tells the analyzer whether the IR beam is shining through the measurement or the reference side of the GFC wheel Segment Sensor Light from this emitter detector pair shines through a portion of the mask that is divided into the same number of segments as the IR detector ring It is used by the synchronous de
272. ough signal I O function in the diagnostic menu See Section 10 1 3 1 If the front panel display responds to button presses and D1 on the relay board is not flashing then either the I7C connection between the motherboard and the relay board is bad or the relay board itself is bad 2 If D1 on the relay board is flashing and the status indicator for the output in question heater power valve drive etc toggles properly using the signal I O function then the associated control device on the relay board is bad Several of the control devices are in sockets and can be easily replaced The table below lists the control device associated with a particular function Table 10 8 Relay Board Control Devices FUNCTION E IN SOCKET Wheel Heater K1 Yes Bench Heater K2 Yes Spare AC Control K3 Yes IZS Valves U4 Yes IR Source Drive U5 No The IR source drive output can be verified by measuring the voltage at J16 with the IR source disconnected It should be 11 5 0 5 VDC 10 5 7 Sensor Assembly 10 5 7 1 Sync Demodulator Assembly To verify that the Sync Demodulator Assembly is working follow the procedure below 1 Verify that D1 and D2 are flashing they flash at different rates see Table 11 3 e f not check the opto pickup assembly Section 10 5 7 2 and the GFC wheel drive Section 11 5 6 3 e If the wheel drive and opto pickup are working properly then verify that there is 2 4 0 1 VAC and 2 5 0 15 VD
273. ow reporting range perpetually and defeat the function of the AUTO range mode Teledyne Analytical Instruments 94 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 8 6 Range Units The GFC 7000TA can display concentrations in parts per billion 10 mols per mol PPB parts per million 10 mols per mol PPM micrograms per cubic meter ug m UG milligrams per cubic meter mg m MG or percent volume CO volume sample gas Changing units affects all of the display analog outputs COM port and DAS values for all reporting ranges regardless of the analyzer s range mode NOTE Concentrations displayed in mg m3 and ug m3 use 0 C 760 mmHg for Standard Temperature and Pressure STP Consult your local regulations for the STP used by your agency Conversion factors from volumetric to mass units are CO ppb x 1 96 pg m3 ppm x 1 96 mg m3 To change the concentration units SAMPLE RANGE 500 00 PPB CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT returns TUP X X RANGE CONTROL MENU to the main menu DE SET UNIT Select the preferred TUP X X CONC UNITS PPM concentration unit PPB MGM ENTER EXIT ENTR accepts the new unit TUP X X CONC UNITS EXIT returns to the SETUP PPM PPB UGM MGM ENTER EXIT menu NOTE Once the units of measurement have bee
274. periodically wears out and must be replaced A sample rebuild kit is available see Appendix B of this manual for the part number of the pump rebuild kit Instructions and diagrams are included with the kit Always perform a Flow and Leak Check after rebuilding the Sample Pump 8 3 3 Performing Leak Checks Leaks are the most common cause of analyzer malfunction Section 8 3 3 1 presents a simple leak check procedure Section 8 3 3 2 details a more thorough procedure 8 3 3 1 Vacuum Leak Check and Pump Check This method is easy and fast It detects but does not locate most leaks it also verifies that the sample pump is in good condition 1 Turn the analyzer ON and allow enough time for flows to stabilize 2 Cap the sample inlet port 3 After several minutes when the pressures have stabilized note the following In the TEST menu note the SAMPLE PRESSURE reading 4 If the reading is lt 10 in Hg the pump is in good condition and there are no large leaks 5 Check the sample gas flow If the flow is lt 10 cm min and stable there are no large leaks in the instrument s pneumatics 8 3 3 2 Pressure Leak Check If you can t locate the leak by the above procedure use the following procedure Obtain a leak checker similar to the Teledyne Instruments part number 01960 which contains a small pump shut off valve and pressure gauge Alternatively a convenient source of low pressure gas is a tank of span gas with the t
275. ploading new settings These default Data Channels can be used as they are or they can be customized from the front panel to fit a specific application They can also be deleted to make room for custom user programmed Data Channels Appendix A 5 lists the firmware specific DAS configuration in plain text format This text file can either be loaded into APICOM and then modified and uploaded to the instrument or can be copied and pasted into a terminal program to be sent to the analyzer NOTE Sending an DAS configuration to the analyzer through its COM ports will replace the existing configuration and will delete all stored data Back up any existing data and the DAS configuration before uploading new settings 6 7 2 1 DAS Configuration Limits The number of DAS objects are limited by the instrument s finite storage capacity For information regarding the maximum number of channels parameters and records and how to calculate the file size for each data channel refer to the DAS manual downloadable from the TAI website at http www teledyne api com manuals Teledyne Analytical Instruments 76 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 2 2 Viewing DAS Data and Settings DAS data and settings can be viewed on the front panel through the following touchscreen buttons sequence TOUCHSCREEN BUTTON FUNCTIONS SAMPLE RANGE 500 000PPM CO2 X XXX BUTTON FUNCTION lt TST TS
276. poses two reference voltages are supplied to the A D converter Reference Ground and 4 096 VDC During calibration the device measures these two voltages outputs their digital equivalent to the CPU The CPU uses these values to compute the converter s offset and slope and uses these factors for subsequent conversions See Section 6 13 4 for instructions on performing this calibration 9 3 6 2 Sensor Inputs The key analog sensor signals are coupled to the A D through the master multiplexer from two connectors on the motherboard 100K terminating resistors on each of the inputs prevent cross talk from appearing on the sensor signals CO Measure and Reference These are the primary signals that are used in the computation of the CO concentration They are the demodulated IR sensor signals from the sync demodulator board Sample Pressure and Flow These are analog signals from two sensors that measure the pressure and flow rate of the gas stream at the outlet of the sample chamber This information is used in two ways First the sample pressure is used by the CPU to calculate CO2 Concentration Second the pressure and flow rate are monitored as a test function to assist the user in predicting and troubleshooting failures 9 3 6 3 Thermistor Interface This circuit provides excitation termination and signal selection for several negative coefficient thermistor temperature sensors located inside the analyzer They are Sample Temper
277. r See Table 3 1 for E 4 pin assignments of A the Analog Out connector on the rear panel Recording Analyzer N Device Figure 6 12 Setup for Calibrating Current Outputs NOTE Do not exceed 60 V between current loop outputs and instrument ground To adjust the zero and span values of the current outputs activate the ANALOG I O CONFIGURATION MENU See Section 6 13 1 then press j Teledyne Analytical Instruments 132 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer C FROM ANALOG I O CONFIGURATION MENU J DIAG ANALOG I O CONFIGURATION PREV NEXT ENTR EXIT DIAG Al AIN CALIBRATED NO SET gt EDIT EXIT Press SET gt to select the analog output channel to be configured DIAG AIO GONC_OUT_2 CURR NO CAL lt SET SE EDIT EXIT DIAG AIO CONC_OUT_2 RANGE CURR lt SET SET gt EDIT EXIT DIAG AIO CONC_OUT_2 CALIBRATED NO lt SET CAL EXIT DIAG AlO AUTO CALIBRATING CONC_OUT_2 The instrument attempt to automatically calibrate the channel then beep DIAG AIO CONC_OUT_2 D A CAL ERROR EXIT DIAG AIO CONC_OUT_2 CURR Z 0 mV U100 UP10 UP DOWN DN10 D100 DIAG AIO CONC_OUT_2 ZERO 27 mV U100 UP10 UP DOWN DN10 D100 ENTR EXIT DIAG AIO CONC_OUT_2 SPAN 10000 mV U100 UP10 UP DOWN DN10 D100 Increase or decrease the curre
278. r limiting the current that the input will draw from an external device When connecting to a unit that does not have this feature an external dropping resistor must be used to limit the current through the transistor output to less than 50 mA At 50 mA the transistor will drop approximately 1 2V from its collector to emitter The status outputs are accessed via a 12 pin connector on the analyzer s rear panel labeled STATUS The function of each pin is defined in Table 6 24 Teledyne Analytical Instruments 142 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer STATUS SYSTEM OK CONC VALID HIGH RANGE ZERO CAL SPAN CAL ALARM 1 ALARM 2 Connect to Internal Ground of Monitoring Device DIAGNOSTIC MODE Figure 6 13 Status Output Connector Teledyne Analytical Instruments 143 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer The pin assignments for the Status Outputs are Table 6 24 Status Output Pin Assignments SYSTEM OK On if no faults are present On if CO concentration measurement is valid CONC VALID If the CO2 concentration measurement is invalid this bit is OFF 3 HIGHRANGE On if unit is in high range of DUAL or AUTO range modes ZERO CAL On whenever the instruments zero point is being calibrated SPAN CAL On whenever the instruments span point is being calibrated aa DIAG MODE On whenever the instrument is in diagnostic mode ALARM1 ae t
279. r loose connections are found in the fittings or the gas line between the orifice and the pump rebuild clean the sample flow control assembly as described in Section 11 6 1 10 2 2 4 Displayed Flow XXXX This warning means that there is inadequate gas flow There are four conditions that might cause this 1 A leak upstream or downstream of the flow sensor 2 A flow obstruction upstream or downstream of the flow sensor 3 Bad Flow Sensor Board 4 Bad pump To determine which case it is view the sample pressure and sample flow functions via the front panel If the sample pressure is reading abnormally low then the cause is likely a flow obstruction upstream of the flow sensor First check the sample filter and make sure it is not plugged and then systematically check all the other components upstream of the orifice to ensure that they are not obstructed Teledyne Analytical Instruments 233 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer If the sample pressure is reading normal but the sample flow is reading low then it is likely that the pump diaphragm is worn or there is an obstruction downstream of the flow sensor 10 2 2 5 Actual Flow Does Not Match Displayed Flow If the actual flow measured does not match the displayed flow but is within the limits of 720 880 cc min adjust the calibration of the flow measurement as described in Section 6 9 8 10 2 2 6 Sample Pump The sample pump should start immediately a
280. r website at http www teledyne ai com Teledyne Analytical Instruments Safety Messages Model GFC7000TA Carbon Dioxide Analyzer CONSIGNES DE SECURITE Des consignes de s curit importantes sont fournies tout au long du pr sent manuel dans le but d viter des blessures corporelles ou d endommager les instruments Veuillez lire attentivement ces consignes Chaque consigne de s curit est repr sent e par un pictogramme d alerte de s curit ces pictogrammes se retrouvent dans ce manuel et a l int rieur des instruments Les symboles correspondent aux consignes suivantes gt OP r PEPE AVERTISSEMENT Risque de choc lectrique DANGER Oxydant puissant AVERTISSEMENT GENERAL MISE EN GARDE Lire la consigne compl mentaire pour des renseignements sp cifiques MISE EN GARDE Surface chaude Ne pas toucher Toucher a certaines parties de l instrument sans protection ou sans les outils appropri s pourrait entrainer des dommages aux pi ces ou a l instrument Pictogramme technicien Toutes les op rations portant ce symbole doivent tre effectu es uniquement par du personnel de maintenance qualifi Mise a la terre Ce symbole l int rieur de l instrument d termine le point central de la mise a la terre s curitaire de l instrument MISE EN GARDE Cet instrument doit tre utilis aux fins d crites et de la mani re d crite dans ce manuel Si vous utilisez cet instrument d une autre m
281. rd or the 12V power supply Teledyne Analytical Instruments 244 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 3 If the drive voltage is correct in step 2 then remove the source from the heat sink assembly 2 screws on top and connect to its mating connector Observe the light being emitted from the source It should be centered at the bottom of the U shaped element If there is either no emission or a badly centered emission then the source is bad 10 5 7 5 Pressure Flow Sensor Assembly The pressure flow sensor PCA located on the top of the absorption bench can be checked with a Voltmeter using the following procedure which assumes that the wiring is intact and that the motherboard and the power supplies are operating properly 1 For Pressure related problems e Measure the voltage across C1 it should be 5 0 25 VDC If not then the board is bad e Measure the voltage across TP4 and TP1 With the sample pump disabled it should be 4500 mV 250 mV With the pump energized it should be approximately 200 mV less If not then S1 the pressure transducer is bad the board is bad or there is a pneumatic failure preventing the pressure transducer from sensing the absorption cell pressure properly e For flow related problems e Measure the voltage across TP2 and TP 1 it should be 10 0 25 VDC If not then the board is bad e Measure the voltage across TP3 and TP1 With proper flow 800 cc min at the sample inlet th
282. re information However it is adjustable over a range of 0 5 second to 200 seconds please contact customer service for more information 4 2 Glossary Note Some terms in this glossary may not occur elsewhere in this manual Term Description Definition 10BaseT an Ethernet standard that uses twisted T pairs of copper wires to transmit at 10 megabits per second Mbps 100BaseT same as 10BaseT except ten times faster 100 Mbps APICOM name of a remote control program offered by Teledyne to its customers ASSY Assembly CAS Code Activated Switch CD Corona Discharge a frequently luminous discharge at the surface of a conductor or between two conductors of the same transmission line accompanied by ionization of the surrounding atmosphere and often by a power loss CE Converter Efficiency the percentage of light energy that is actually converted into electricity CEM Continuous Emission Monitoring Chemical formulas that may be included in this document CO2 carbon dioxide C3H8 propane CH methane H20 water vapor HC general abbreviation for hydrocarbon Teledyne Analytical Instruments 46 FAQ Model GFC7000TA Carbon Dioxide Analyzer Term Description Definition HNO3 nitric acid H2S hydrogen sulfide NO nitric oxide NO2 nitrogen dioxide NOx nitrogen oxides here defined as the sum of NO and
283. re 3 11 Pneumatic Connections with Ambient Zero Ambient Span Valves OPT 50A VENT SPAN Chassis PRESSURE SPAN IZS PURGE LINE Source of VENT here if input SAMPLE GAS is pressurized Removed during calibration Calibrated CO Gas Model T700 gas at 100x span gas Dilution concentration Calibrator SAMPLE EXHAUST VENT SPAN PRESSURE SPAN External Zero Air IZS Scrubber PURGE LINE Figure 3 12 Pneumatic Connections with Ambient Zero Ambient Span Valves Opt 50A and External Zero Air Scrubber Teledyne Analytical Instruments 30 Getting Started Model GFC7000TA Carbon Dioxide Analyzer Figure 3 13 and Figure 3 14 show the pneumatic connections for the ambient zero and ambient span valve option Option 50B Source of VENT here if input SAMPLE GAS is pressurized Removed during calibration SAMPLE Calibrated CO Gas EXHAUST at span gas concentration VENT SPAN Chassis PRESSURE SPAN KEY v PURGE LINE Figure 3 13 Pneumatic Connections with Ambient Zero Pressurized Span Valves OPT 50B VENT here if input Source of is pressurized SAMPLE GAS Removed during calibration SAMPLE EXHAUST VENT SPAN Chassis PRESSURE SPAN External Zero Air Scrubber IZS PURGE LINE Calibrated CO Gas at span gas concentration Figure 3 14 Pneumatic Connections with Ambient Zero Pressurized Span Valves Opt 50B and External Zero Air Scrubber Teledyne
284. re Control Figure 5 3 Internal Pneumatic Flow Ambient Zero Ambient Span j Teledyne Analytical Instruments 56 FAQ Model GFC7000TA Carbon Dioxide Analyzer 5 5 Communication Options 5 5 1 Communications Cables Type Description Shielded straight through DB 9F to DB 25M cable about 1 8 m long 60A RS 232 Used to interface with older computers or code activated switches with DB 25 serial connectors Shielded straight through DB 9F to DB 9F cable of about 1 8 m 60B RS 232 length 60C Ethernet Patch cable 2 meters long used for Internet and LAN communications 60D USB Cable for direct connection between instrument rear panel USB port and PC or laptop computer 5 5 2 RS 232 Multidrop Option 62 The multidrop option is used with any of the RS 232 serial ports to enable communications of up to eight analyzers with the host computer over a chain of RS 232 cables via the instruments COM1 port labeled RS232 It is subject to the distance limitations of the RS 232 standard The option consists of a small printed circuit assembly which is seated on the analyzer s CPU card see Figure 5 4 and is connected to the RS 232 and COM2 DB9 connectors on the instrument s back panel via a cable to the motherboard One option 62 is required for each analyzer along with one 6 straight through DB9 male gt DB9 Female cable P N WRO0000101 For information on using
285. rees refer to Appendix A The areas access under the Setup mode are Table 6 4 Primary Setup Mode Features and Functions MODE OR TOUCHSCREEN MANUAL FEATURE BUTTON DESCRIPTION SECTION Analyzer CFG Lists key hardware and software configuration information 6 5 Configuration Used to set up and operate the AutoCal feature Auto Cal Feature ACAL Only appears if the analyzer has one of the internal valve 7 6 options installed Internal Data i Acquisition DAS DAS Used to set up the DAS system and view recorded data 6 7 Analog Output Used to configure the output signals generated by the Reporting Range RNGE 9 put sig 9 y 6 8 7 instruments Analog outputs Configuration Calibration et es Password Security PASS Turns the calibration password feature ON OFF 6 9 Internal Clock CLK Used to Set or adjust the instrument s internal clock 6 10 Configuration Advanced SETUP F See Features MORE This button accesses the instruments secondary setup menu Table 6 5 Table 6 5 Secondary Setup Mode Features and Functions MODE OR FEATURE Le SAREEN DESCRIPTION eit BUTTON SECTION DIREA Used to set up and operate the analyzer s various External Communication COMM external I O channels including RS 232 RS 485 611 8 Channel Configuration anaes 6 15 modem communication and or Ethernet access System Status Variables VARS Used to view various variables related to the 6 12 instruments current operational status U
286. rom the pin on the Status connector to the A pin on the Control In connector The instrument should switch from SAMPLE mode to ZERO CAL R mode 3 Connect a second jumper from the pin on the Status connector to the B pin on the Control In connector The instrument should switch from SAMPLE mode to SPAN CAL R mode 4 In each case the GFC 7000TA should return to SAMPLE mode when the jumper is removed Teledyne Analytical Instruments 248 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 5 9 CPU There are two major types of failures associated with the CPU board complete failure and a failure associated with the Disk on Module DOM If either of these failures occur contact the factory For complete failures assuming that the power supplies are operating properly and the wiring is intact the CPU is faulty if on power on the watchdog LED on the motherboard is not flashing In some rare circumstances this failure may be caused by a bad IC on the motherboard specifically U57 the large 44 pin device on the lower right hand side of the board If this is true removing U57 from its socket will allow the instrument to start up but the measurements will be invalid If the analyzer stops during initialization the front panel display shows a fault or warning message it is likely that the DOM the firmware or the configuration and data files have been corrupted 10 5 10 RS 232 Communications 10 5 10 1
287. rption cell assemblies are properly controlled 3 7 1 Startup After electrical and pneumatic connections are made and initial functional check is required Turn on the instrument The pump exhaust fan and PMT cooler fan should start immediately The display will briefly show a logo splash screen at the start of initialization The analyzer should automatically switch to Sample Mode after completing the boot up sequence and start monitoring CO gas However there is an approximately one hour warm up period before reliable gas measurements can be taken During the warm up period the front panel display may show messages in the Parameters field Teledyne Analytical Instruments 33 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 7 2 Warm Up During the warm up period various portions of the instrument s front panel may behave as indicated in Table 3 8 Table 3 8 Front Panel Display During System Warm Up NAME COLOR BEHAVIOR SIGNIFICANCE Conc field N A a ean SS This is normal operation but deemed inaccurate during the p l 2 warm up period Concentration Mode field eles cument Instrument is in Sample mode but is still in the process of SALE i warming up DAS holdoff period is active Param field Displays menu items Refer to Table 3 9 for a list and descriptions of warning and messages messages STATUS LEDs Unit is operating in sample mode front panel display is Sample Green On being updated
288. s ENTR to change the OFFSET amp SLOPE values for the CO measurements RANGE 500 000 PPM CO2 XXX X Press EXIT to leave the calibration unchanged and return to the previous menu EXIT returns to the main SAMPLE display If the ZERO or SPAN buttons are not displayed this means that the measurement made during that part of the procedure is too far out of the allowable range to do allow a reliable calibration The reason for this must be determined before the analyzer can be calibrated See Section 11 for troubleshooting tips TST gt ENTR SPAN CONC EXIT RANGE 500 000 PPM CO2 XXX X IST gt ENTR CONC EXIT Teledyne Analytical Instruments 164 Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer 7 3 Manual Calibration Checks Informal calibration checks which only evaluate but do not alter the analyzer s response curve are recommended as a regular maintenance item and in order to monitor the analyzer s performance To carry out a calibration check rather than a full calibration follow these steps STEP ONE Connect the sources of zero air and span gas as shown in Figures 7 1 or 7 2 STEP TWO Perform the zero span calibration check procedure ACTION Supply the instrument with zero gas SAMPLE RANGE 500 0 PPM Scroll the display to the STABIL test function _ lt TST TST gt SETUP SAMPLE STABIL XXX X PPM CO2 X XXX Wait until lt TST TST gt SETUP
289. s completed the appropriate setup command line for your modem can be entered into the analyzer The default setting for this feature is AT YO amp DO amp HO amp I0 SO 2 amp BO amp N6 amp MO E0 Q1 amp WO This string can be altered to match your modem s initialization and can be up to 100 characters long To change this setting press SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X COM1 MODE 0 SET gt EDIT SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP X X COM1 BAUD RATE 19200 lt SET SET gt EDIT EXIT returns to the previous 4 SETPP XX SECONDARY SETUP MENU menu EXIT SETUP X X COM1 MODEMINIT AT Y amp D amp H SETUP X X COMMUNICATIONS MENU lt SET SET gt EDIT EXIT ENTR accepts the new string and returns to the previous menu EXIT ignores the new string and returns to the previous menu ID INET COM1 COM2 SETUP X X COM1 MODEMINIT A T YO amp D amp H lt CH CH gt INS DEL A ENTR EXIT Press the key repeatedly to cycle through the available character set INS inserts a DEL deletes a 0 9 character before character at the A Z lt CH and CH gt move the the cursor location cursor location space amp _ cursor left and right along the L lt 2 5 text string eee Teledyne Analytical Instruments 150
290. s configuration is edited through the front panel To prevent such data loss it is recommended to use the APICOM graphical user interface for DAS changes The green SAMPLE LED on the instrument front panel which indicates the analyzer status also indicates certain aspects of the DAS status Table 6 6 Front Panel Sample LED Status Indicators for DAS OFF System is in calibration mode Data logging can be enabled or disabled for this mode Calibration data are typically stored at the end of calibration periods concentration data are typically not sampled diagnostic data should be collected BLINKING Instrument is in hold off mode a short period after the system exits calibrations IDAS channels can be enabled or disabled for this period Concentration data are typically disabled whereas diagnostic should be collected ON Sampling normally The DAS can be disabled only by disabling or deleting its individual data channels Teledyne Analytical Instruments 71 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 1 DAS Structure The DAS is designed around the feature of a record A record is a single data point of one parameter stored in one or more data channels and generated by one of several triggering event The entire DAS configuration is stored in a script which can be edited from the front panel or downloaded edited and uploaded to the instrument in form of a string of plain text lines through
291. s current operating status Table 6 11 Ethernet Status Indicators LED Function amber link On when connection to the LAN is valid green activity Flickers during any activity on the LAN 6 11 6 1 Configuring the Ethernet Interface using DHCP The Ethernet option for your analyzer uses Dynamic Host Configuration Protocol DHCP to automatically configure its interface with your LAN This requires your network servers also be running DHCP The analyzer will do this the first time you turn the instrument on after it has been physically connected to your network Once the instrument is connected and turned on it will appear as an active device on your network without any extra set up steps or lengthy procedures Teledyne Analytical Instruments 108 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Table 6 12 LAN Internet Configuration Properties PROPERTY DEFAULT STATE DESCRIPTION ON This displays whether the DHCP is turned ON or OFF DHCP Press EDIT and toggle ON for automatic configuration after first consulting network administrator INSTRUMENT This string of four packets of 1 to 3 numbers each e g IP ADDRESS 192 168 76 55 is the address of the analyzer itself Can only be edited when DHCP is set to OFF GATEWAY IP 0 0 0 0 A string of numbers very similar to the Instrument IP ADDRESS address e g 192 168 76 1 that is the address of the computer used by your LAN to access the I
292. s in all channels one megabyte of space on the disk on chip However the actual number of records is also limited by the total number of parameters and channels and other settings in the DAS configuration Every additional data channel parameter number of samples setting etc and will reduce the maximum amount of data points somewhat In general however the maximum data capacity is divided amongst all channels max 20 and parameters max 50 per channel The DAS will check the amount of available data space and prevent the user from specifying too many records at any given point If for example the DAS memory space can accommodate 375 more data records the ENTR key will disappear when trying to specify more than that number of records This check for memory space may also make an upload of an DAS configuration with APICOM or a Terminal program fail if the combined number of records would be exceeded In this case it is suggested to either try from the front panel what the maximum number of records can be or use trial and error in designing the DAS script or calculate the number of records using the DAS or APICOM manuals To set the number of records for one channel from the front panel press SETUP DAS EDIT ENTR and the following touchscreen button sequence From the DATA ACQUISITION menu see Section 6 12 2 2 Edit Data Channel Menu SETUP X X 0 CONC ATIMER 12 900 i Exits to the main PREV NEXT INS DEL EDIT PRNT EXT Da
293. s interference at a 100 1 ratio however this still can allow small fluctuations in CO2 concentration during the course of the day To completely remove all effects of ambient CO from the analyzer s measurement of COs dried air scrubbed of all CO2 is pumped into the GFC wheel housing to purge all ambient CO see Figure 10 7 Teledyne Analytical Instruments 192 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 2 Pneumatic Operation CAUTION It is important that the sample airflow system is both leak tight and not pressurized over ambient pressure Regular leak checks should be performed on the analyzer as described in the maintenance schedule Table 9 1 Procedures for correctly performing leak checks can be found in Section 9 3 3 An internal pump evacuates the sample chamber creating a small vacuum that draws sample gas into the analyzer Normally the analyzer is operated with its inlet near ambient pressure either because the sample is directly drawn at the inlet or a small vent is installed at the inlet There are several advantages to this pull through configuration e By placing the pump down stream from the sample chamber several problems are avoided e First the pumping process heats and compresses the sample air complicating the measurement process e Additionally certain physical parts of the pump itself are made of materials that might chemically react with the sample gas
294. s typically the model number to change the 4 digit identification number press the button of the digit to be changed NOTE Teledyne Instruments recommends setting up the first link between the Host and the first analyzer and testing it before setting up the rest of the chain KEY Ky Female DB9 Male DB9 Analyzer Analyzer Analyzer Last Analyzer COM2 COM2 Make Sure Jumper between JP2 pins 21 lt 22 is installed Figure 6 10 RS232 Multidrop PCA Host Analyzer Interconnect Diagram j Teledyne Analytical Instruments 115 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 11 8 COM Port Baud Rate To select the baud rate of one of the COM Ports press SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE SETUP X X SECONDARY SETUP MENU SETUP X X COMMUNICATIONS MENU Select which COM port to configure ID INET COM1 COM2 SETUP X X Press SET gt until you reach COM1 BAUD RATE SET gt EDIT EXAMPLE SETUP X X COM1 BAUD RATE 19200 Use PREV and NEXT to move between available paudirates lt SET SET gt EDIT 300 1200 SETUP X X COM1 BAUD RATE 19200 PREV NEXT ENTR SETUP X X COM1 BAUD RATE 9600 NEXT ON ENTR Teledyne Analytical Instruments EXIT returns to the previous menu EXIT ignores the new setting ENTR accepts the new setting 116 Oper
295. sated CO concentration is increased 9 5 5 Internal Data Acquisition System DAS The DAS is designed to implement predictive diagnostics that stores trending data for users to anticipate when an instrument will require service Large amounts of data can be stored in non volatile memory and retrieved in plain text format for further processing with common data analysis programs The DAS has a consistent user interface in all Teledyne Instruments analyzers New data parameters and triggering events can be added to the instrument as needed Depending on the sampling frequency and the number of data parameters the DAS can store several months of data which are retained even when the instrument is powered off or a new firmware is installed The DAS permits users to access the data through the instrument s front panel or the remote interface The latter can automatically download stored data for further processing For information on using the DAS refer to Sections 6 12 Teledyne Analytical Instruments 215 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer This page intentionally left blank j Teledyne Analytical Instruments 216 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 10 TROUBLESHOOTING amp REPAIR PROCEDURES This contains a variety of methods for identifying the source of performance problems with the analyzer Also included in this are procedures that are used in repairing the instrument C
296. sed to access a variety of functions that are used to System Diagnostic Features DIAG configure test or diagnose problems with a variety of 6 13 the analyzer s basic systems CO Concentration Alarms ALRM Used to activate the analyzer s two gas concentration 6 14 status alarms and set the alarm limits NOTE Any changes made to a variable during one of the following procedures is not acknowledged by the instrument until the ENTR button is pressed If EXIT is pressed before the ENTR button the analyzer will beep alerting the user that the newly entered value has been lost Teledyne Analytical Instruments 69 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 5 SETUP gt CFG Viewing the Analyzer s Configuration Information Pressing the CFG button displays the instrument configuration information This display lists the analyzer model serial number firmware revision software library revision CPU type and other information Use this information to identify the software and hardware when contacting customer service Special instrument or software features or installed options may also be listed here SAMPLE RANGE 500 000 PPB CO2 X XXX lt TST TST gt CAL SETUP Press NEXT and PREV to scroll through the following list of Configuration information e MODEL NAME e PARTNUMBER SAMPLE PRIMARY SETUP MENU Press EXIT at any e SERIAL NUMBER time to retum to the SOFTWARE REV
297. signals are present Table 10 3 Sync Demod Board Status Failure Indications LED FUNCTION FAULT STATUS INDICATED FAILURE S GFC Wheel is not turning M R Sensor Status M R Sensor on Opto Pickup Board failed LED is stuck D1 Sync Demod Board failed Flashes slowly ener aer JP 4 Connector Wiring faulty Failed Faulty 5 VDC Power Supply PS1 Seament Sensor GFC Wheel is not turning 9 Segment Sensor on Opto Pickup Board failed Status LED is stuck D2 ON or OFF Sync Demod Board failed JP 4 Connector Wiring faulty Failed Faulty 5 VDC Power Supply PS1 Flashes quickly Teledyne Analytical Instruments 225 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer JP4 Connector to Opto Pickup D1 M R Sensor Status Board D2 Segment Sensor Status Figure 10 4 Sync Demod Board Status LED Locations 10 1 4 3 Relay Board Status LEDs There are eight LEDs located on the Relay Board The most important of which is D1 is the most important LED which indicates the health of the I C bus If D1 is blinking the other faults following LEDs can be used in conjunction with DIAG menu signal I O to identify hardware failures of the relays and switches on the relay See Section 6 9 2 and Appendix D Table 10 4 12C Status LED Failure Indications LED FUNCTION FAULT STATUS INDICATED FAILURE S 2 p Failed Halted CPU D1 l ae i ee ON Faulty Motherboard or Relay Board Red e
298. ster than RS 232 with a much longer distance between the host and the furthest device SAROAD Storage and Retrieval of Aerometric Data SLAMS State and Local Air Monitoring Network Plan SLPM Standard Liters Per Minute of a gas at standard temperature and pressure STP Standard Temperature and Pressure TCP IP Transfer Control Protocol Internet Protocol the standard communications protocol for Ethernet devices TEC Thermal Electric Cooler TPC Temperature Pressure Compensation USB Universal Serial Bus a standard connection method to establish communication between peripheral devices and a host controller such as a mouse and or touchscreen and a personal computer or laptop VARS Variables the variable settings of the instrument V F Voltage to Frequency ZIS Zero Span Teledyne Analytical Instruments 49 FAQ Model GFC7000TA Carbon Dioxide Analyzer Tthis page intentionally left blank Teledyne Analytical Instruments 50 FAQ Model GFC7000TA Carbon Dioxide Analyzer 5 OPTIONAL HARDWARE AND SOFTWARE This includes a brief description of the hardware and software options available for the Model GFC 7OOOTA Gas Filter Correlation Carbon Dioxide Analyzer For assistance with ordering these options please contact the Sales department of Teledyne Analytical Instruments at TELEDYNE ELECTRONIC TECHNOLOGIES Analytical Instruments 16830 Chestnut Street City of Industry CA 91748 Telephone 626 934 1500 Fax
299. stroke sequence SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP TUP X X PRIMARY SETUP MENU FG DAS RNGE PASS CLK MORE TUP X X PASSWORD ENABLE OFF Toggle this button to OFF ENTR EXIT enable disable password feasture 7 SETUP X X PASSWORD ENABLE ON ON ENTR EXIT Teledyne Analytical Instruments 97 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Example If all passwords are enabled the following keypad sequence would be required to enter the SETUP menu prompts for password number SAMPLE RANGE 500 000 PPM lt TST TST gt CAL CO2 X XXX SETUP SAMPLE ENTER SETUP PASS 0 See Table 6 8 for Passwords and Levels 0 0 0 ENTR EXIT Press individual F ENTER SETUP PASS 0 buttons to set numbers 8 1 8 ENTR EXIT SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT Example this password enables the SETUP mode Note that the instrument still prompts for a password when entering the VARS and DIAG menus even if passwords are disabled but it displays the default password 818 upon entering these menus The user only has to press ENTR to access the password protected menus but does not have to enter the required number code Teledyne Analytical Instruments 98 Operating Instruct 6 10 SETUP gt CLK Setting the Internal Time of Day Clock The GFC 7000TA has a time of day cl
300. sure Dark Gate LOW Reference Gate HIGH Reference Dark Gate REFERENCE cell of GFC Wheel LOW Timing for activating the Sample and Hold circuits is provided by a phase lock loop circuit PLL Using the segment sensor output as a reference signal the PLL generates clock signal at ten times that frequency This faster clock signal is used by the PLD to make the sample and hold circuits capture the signal during the center portions of the detected waveform ignore the rising and falling edges of the detector signal Sample amp Hold Active Detector Output Sample amp Hold Inactive Figure 9 14 Sample amp Hold Timing 9 3 4 3 Sync Demod Status LED s The following two status LED s located on the synch demod board provide additional diagnostic tools for checking the GFC wheel rotation Table 9 1 Sync Demod Status LED Activity LED FUNCTION STATUS OK FAULT STATUS D1 M R Sensor Status LED flashes approximately LED is stuck 2 second ON or OFF D2 Segment Sensor LED flashes approximately LED is stuck Status 6 second ON or OFF See Section 11 1 4 for more information Teledyne Analytical Instruments 204 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 3 4 4 Photo Detector Temperature Control The synch demod board also contains circuitry that controls the IR photo detector s thermoelectric coolers A drive voltage PHT DRIVE is supplied to the coolers by the synch de
301. ta cee SETUP XX NAME CONC lt SET SET gt EDIT PRINT Press SET gt key until SETUP XX NUMBER OF RECORDS 000 lt SET SET gt EDIT PRINT SETUP X X EDIT RECOPRDS DELET DATA NO returns to the YES will delete all data YES NO previous menu in this channel ENTR accepts the new setting and returns to the Toggle buttons to set previous menu number of records SETUP X X REPORT PERIODD DAYS 0 1 99999 EXIT ignores the new setting and returns to the previous menu 0 0 0 0 0 ENTR EXIT Teledyne Analytical Instruments 84 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer 6 7 2 8 RS 232 Report Function The GFC 7000TA DAS can automatically report data to the communications ports where they can be captured with a terminal emulation program or simply viewed by the user To enable automatic COM port reporting follow the instruction shown in Section 6 7 2 2 then press From the DATA ACQUISITION menu see Section 6 7 2 2 Edit Data Channel Menu SETUP X X 0 CONC ATIMER 1 900 R 3 Exits to the main PREV NEXT NS DEL EDIT PRNT EXIT Bate edukon SETUP X X NAME CONC lt SET SET gt EDIT PRINT Press SET gt key until l SETUP X X RS 232 REPORT OFF lt SET SET gt EDIT PRINT ENTR accepts the new setting and returns to the previous menu EXIT ignores the new setting and returns to the previous menu SETUP X X RS 232 REPORT OFF
302. tes that unit is in SAMPLE Mode and AUTOCAL feature is activated SETUP SETUP mode is being used to configure the analyzer CO2 sampling will continue during this process SPAN CAL A Unit is performing span cal procedure initiated automatically by the analyzers AUTOCAL feature SPAN CAL M Unit is performing span cal procedure initiated manually by the user SPAN CAL R Unit is performing span cal procedure initiated remotely via the RS 232 RS 4485 or digital i o control inputs ZERO CAL A Unit is performing zero cal procedure initiated automatically by the analyzers AUTOCAL feature ZERO CAL M Unit is performing zero cal procedure initiated manually by the user ZERO CAL R Unit is performing zero cal procedure initiated remotely via the RS 232 RS 4485 or digital I O control inputs The revision of the Teledyne Instruments software installed in this analyzer will be displayed following the word SETUP E g SETUP G 4 Finally the various CAL modes allow calibration of the analyzer Because of its importance this mode is described separately in Section 7 6 2 Sample Mode This is the analyzer s standard operating mode In this mode the instrument is analyzing the gas in the sample chamber calculating CO concentration and reporting this information to the user via the front panel display the analog outputs and if set up properly the RS 232 485 Ethernet ports NOTE A value of XXXX displayed in the CO2 Conc
303. thernet Ethernet Port Type B Port Analog Input erminal Block Powered ar a Aux IO PCA Figure 9 17 Front Panel and Display Interface Block Diagram 9 4 1 LVDS Transmitter Board The LVDS low voltage differential signaling transmitter board converts the parallel display bus to a serialized low voltage differential signal bus in order to transmit the video signal to the LCD interface PCA 9 4 2 Front Panel Touchscreen Display Interface PCA The front panel touchscreen display interface PCA controls the various functions of the display and touchscreen For driving the display it provides connection between the CPU video controller and the LCD display module This PCA also contains e power supply circuitry for the LCD display module e a USB hub that is used for communications with the touchscreen controller and the two front panel USB device ports e the circuitry for powering the display backlight Teledyne Analytical Instruments 212 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer 9 5 Software Operation The Model GFC 7000TA Gas Filter Correlation Carbon Dioxide Analyzer has a high performance VortexX86 based microcomputer running Windows CE Inside Windows CE special software developed by Teledyne Instruments interprets user commands via the various interfaces performs procedures and tasks stores data in the CPU s various memory devices and calculates the concentration of the samp
304. this feature external resistors must be used to limit the current through the individual transistor outputs to lt 5OmA 120 Q for 5V supply The pin assignments for the status outputs can be found in the table below Table 3 5 Status Output Pin outs STATUS OUTPUT DEFINITION CONDITION eS SYSTEM OK On if no faults are present On if CO concentration measurement is valid CONC VALID If the CO2 concentration measurement is invalid this bit is OFF 3 HGHRANGE On if unit is in high range of DUAL or AUTO range modes ZERO CAL On whenever the instruments ZERO point is being calibrated SPAN CAL On whenever the instruments SPAN point is being calibrated 8 DIAG MODE On whenever the instrument is in DIAGNOSTIC mode 7 ALARMI On whenever the measured CO2 concentration is above the set point for ALM1 zw ALARM2 rebels the measured COz concentration is above the set point for bD EMITTER BUS The emitters of the transistors on pins 1 8 are bused together DC POWER 5VDC Digital Ground The ground level from the analyzer s internal DC power supplies Teledyne Analytical Instruments 23 Getting Started Model GFC7000TA Carbon Dioxide Analyzer 3 5 5 Connecting the Control Inputs If you wish to use the analyzer to remotely activate the zero and span calibration modes several digital control inputs are provided through a 10 pin connector labeled CONTROL IN on the analyzer s rear panel There are two
305. tinue pressing NEXT until SETUP X X SECONDARY SETUP MENU SETUP X X 2 STABIL_GAS C02 COMM VARS DIAG ALRM EXIT lt PREV NEXT gt JUMP EDIT PRNT EXIT SETUP X X ENTER PASSWORD 818 SETUP X X STABIL_GAS CO2 8 1 8 ENTR EXIT CO2 02 ENTR EXIT SETUP X X STABIL_GAS 02 Press EXIT 3 CO2 02 ENTR EXIT times to return to SAMPLE menu NOTE Use the same procedure to reset the STB test function to CO when the O calibration procedure is complete N Teledyne Analytical Instruments 4 Getting Started Model GFC7000TA Carbon Dioxide Analyzer STEP 4 O Zero Span Calibration perform by pressing Analyzer continues to cycle through CO2 and Oz measurements throughout this procedure The SPAN button now appears during the transition from zero to span If either the ZERO or SPAN buttons fail to appear see Section 11 for troubleshooting tips SAMPLE A1 CONC1 50PPM CO XXXX Set the Display to show the O2 STB test function This function calculates the stability of the CO2 measurement Toggle TST gt button until SAMPLE O2 STB X XX CO2 X XXX lt TST TST gt CAL SETUP lt TST TST gt CAL SETUP Allow zero gas to enter the sample port at the rear of the analyzer Wait until O2 STB falls below 0 1 This may take several minutes SAMPLE 02 STB X XX CO2 XXXX lt TST TST gt CAL SETUP GAS TO CAL CO2 Press ENTR to changes the OFFSET amp SLOPE values
306. to avoid damaging the components 1 2 10 Turn off the analyzer Remove the top cover as described in Getting Started Section 3 1 Open the instrument s hinged front panel Locate the GFC wheel motor assembly see Figure 3 3 Unplug the following electronic components e The GFC wheel housing temperature sensor e GFC wheel heater e GFC wheel motor power supply e IR source Unscrew the purge gas line hex nut and remove the 1 8 inch FEP purge gas line Figure 10 11 Opening the GFC Wheel Housing Remove the two 2 screws holding the opto pickup printed circuit assembly to the GFC wheel housing Carefully remove the opto pickup printed circuit assembly Remove the four 4 screws holding the GFC wheel motor heat sink assembly to the GFC wheel housing Carefully remove the GFC wheel motor heat sink assembly from the GFC wheel housing Teledyne Analytical Instruments 252 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer 11 Remove the one 1 screw fastening the GFC wheel mask assembly to the GFC motor hub Figure 10 12 Removing the GFC Wheel 12 Remove the GFC wheel mask assembly 13 Follow the previous steps in reverse order to put the GFC wheel motor assembly back together 10 6 3 Disk On Module Replacement Procedure NOTE Servicing of circuit components requires electrostatic discharge protection i e ESD grounding straps mats and containers Failure to use ESD protectio
307. to the characteristics of the recording device Outputs configured for automatic calibration can be calibrated as a group or individually Calibration of the analog outputs needs to be carried out on first startup of the analyzer performed in the factory as part of the configuration process or whenever re calibration is required Teledyne Analytical Instruments 126 Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer To calibrate the outputs as a group activate the ANALOG I O CONFIGURATION MENU See Section 6 13 1 then press STARTING FROM DIAGNOSTIC MENU see Section 6 13 1 DIAG ANALOG O CONFIGURATION Exit at any time ENTR EXIT PREV NEXT to return to the main DIAG menu AOUTS CALIBRATED NO DIAG AIO If AutoCal has been lt SET SET gt CAL EXIT turned off for any channel the message for that channel will be DIA AUTO CALIBRATING CONC_OUT_1 similar to AUTO CALIBRATING CONC_OUT_2 pe NOT AUTO CAL AUTO CALIBRATING TEST_OUTPUT CONC OUT 1 If any of the channels have t et ee not been calibrated this message will read NO Exit to return to the I O configuration menu DIAG AIO AOUTS CALIBRATED lt SET SET gt CAL EXIT To automatically calibrate a single analog channel activate the ANALOG I O CONFIGURATION MENU See Section 6 13 1 then press Teledyne Analytical Instruments 127 Operating Instructions Mo
308. ty See A Primer on Electro Static Discharge in this manual for more information on preventing ESD damage NOTE It is recommended that you store shipping containers materials for future use if when the instrument should be returned to the factory for repair and or calibration service See Warranty section in this manual and shipping procedures on our Website at http www teledyne api com under Customer Support gt Return Authorization 1 Verify that there is no apparent external shipping damage If damage has occurred please advise the shipper first then Teledyne Instruments 2 Included with your analyzer is a printed record of the final performance characterization performed on your instrument at the factory This record titled Final Test and Validation Data Sheet P N 04596 is an important quality assurance and calibration record for this instrument It should be placed in the quality records file for this instrument 3 Carefully remove the top cover of the analyzer and check for internal shipping damage e Remove the set screw located in the top center of the Front panel e Remove the 2 screws fastening the top cover to the unit one per side towards the rear e Slide the cover backwards until it clears the analyzer s front bezel Lift the cover straight up Teledyne Analytical Instruments Getting Started Model GFC7000TA Carbon Dioxide Analyzer 4 Inspect the interior of the instrument to mak
309. uestion and perform an analog output step test as described in Section 6 9 3 For each of the steps taking into account any offset that may have been programmed into channel See Section 6 9 4 the output should be within 1 of the nominal value listed in the table below except for the 0 step which should be within 2 to 3 mV If one or more of the steps fails to be within this range then it is likely that there has been a failure of the either or both of the DACs and their associated circuitry on the motherboard Teledyne Analytical Instruments 246 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Table 10 10 Analog Output Test Function Nominal Values Voltage Outputs FULL SCALE OUTPUT VOLTAGE 100MV 1V 5V 10V STEP NOMINAL OUTPUT VOLTAGE 1 0 0 0 0 0 2 20 20 mV 0 2 1 2 3 40 40 mV 0 4 2 4 4 60 60 mV 0 6 3 6 5 80 80 mV 0 8 4 8 6 100 100 mV 1 0 5 10 10 5 8 3 Analog Outputs Current Loop To verify that the analog outputs with the optional current mode output are working properly connect a 250 ohm resistor across the outputs and use a voltmeter to measure the output as described in Section 6 9 4 2 and then perform an analog output step test as described in Section 6 9 3 For each step the output should be within 1 of the nominal value listed in the table below Table 10 11 Analog Output Test Function Nominal Values Current Outputs OUTPUT RANGE
310. und under the DIAG Menu See Section 6 9 2 and Appendix A combined with a thorough understanding of the instrument s Theory of Operation found in Section 10 are useful for troubleshooting in three ways e The technician can view the raw unprocessed signal level of the analyzer s critical inputs and outputs e All of the components and functions that are normally under algorithmic control of the CPU can be manually exercised e The technician can directly control the signal level of the Analog and Digital Output signals This allows the technician to systematically observe the effect of directly controlling these signals on the operation of the analyzer Below in Figure 11 2 is an example of how to use the signal I O menu to view the raw voltage of an input signal or to control the state of an output voltage or control signal The specific parameter will vary depending on the situation Teledyne Analytical Instruments 223 Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer SAMPLE RANGE 500 000 PPM CO2 X XXX lt TST TST gt CAL SETUP SETUP X X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT SETUP XX SECONDARY SETUP MENU DIAG EXIT SAMPLE ENTER SETUP PASS 818 8 1 8 ENTR DIAG SIGNAL I O PREV ENTR EXIT DIAG 1 0 0 EXT_ZERO_CAL ON EXT JUMP PRNT EXIT If parameter is an output signal or control DIAG I O If parameter is an input signal gt
311. ut Adjustment A current loop option is available and can be installed as a retrofit for each of the analog outputs of the analyzer s 5 2 This option converts the DC voltage analog output to a current signal with 0 20 mA output current The outputs can be scaled to any set of limits within that 0 20 mA range However most current loop applications call for either 2 20 mA or 4 20 mA range All current loop outputs have a 5 over range Ranges with the lower limit set to more than 1 mA e g 2 20 or 4 20 mA also have a 5 under range To switch an analog output from voltage to current loop after installing the current output printed circuit assembly follow the instructions in Section 6 13 4 4 and select CURR from the list of options on the RANGE menu Adjusting the signal zero and span values of the current loop output is done by raising or lowering the voltage of the respective analog output This proportionally raises or lowers the current produced by the current loop option Similar to the voltage calibration the software allows this current adjustment to be made in 100 10 or 1 count increments Since the exact current increment per voltage count varies from output to output and from instrument to instrument you will need to measure the change in the current with a current meter placed in series with the output circuit Figure 6 16 Teledyne Analytical Instruments 131 Operating Instructions Model GFC7000TA Carbon Dioxide Analyze
312. ve A ot 6S5 IZS INLET I B S W mr a EXHAUST GAS OUTLET a z Ss ef a Flow P SAMPLE S 8 Sample Gas Ow I Eressure PRESSURE Ps g Flow Control Sensor PCA SENSOR a2 Fa va a 02 O3 FLOW SENSOR External CO2 Option 51 only PURGE GAS INLET Ee J Purge Gas Pressure Control Figure 5 2 Internal Pneumatic Flow Ambient Zero Pressurized Span Valves 5 4 2 Ambient Zero Ambient Span Valve This valve option is intended for applications where zero air is supplied by a zero air generator like a bottle of N2 and span gas are being supplied by Gas Dilution Calibrator like the Teledyne Instruments Model 700 or 702 Internal zero span and sample cal valves control the flow of gas through the instrument but because the calibrator limits the flow of span gas no shutoff valve is required In order to ensure that span gas does not migrate backwards through the vent line and alter the concentration of the span gas a gas line not less than 2 meters in length should be attached to the vent span outlet on the rear panel of the analyzer To prevent the buildup of back pressure this vent line should not be greater than 10 meters in length The following table describes the state of each valve during the analyzer s various operational modes Table 5 2 Ambient Zero Ambient Span Valve Operating States wos vane conatton 1 SAMPLE Sample Cal Open t
313. wavelength is absorbed by a particular gas molecule over a certain distance The mathematical relationship between these three parameters is aLc le Where lo is the intensity of the light if there was no absorption is the intensity with absorption L is the absorption path or the distance the light travels as it is being absorbed C is the concentration of the absorbing gas In the case of the Model GFC 7000TA carbon dioxide CO3 is the absorption coefficient that tells how well CO absorbs light at the specific wavelength of interest 9 1 2 Measurement Fundamentals In the most basic terms the Model GFC 7000TA uses a high energy heated element to generate a beam of broad band IR light with a known intensity measured during Instrument calibration This beam is Teledyne Analytical Instruments 187 Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer directed through multi pass cell filled with sample gas The sample cell uses mirrors at each end to reflect the IR beam back and forth through the sample gas to generate a 2 5 meter absorption path see Figure 10 1 This length was chosen to give the analyzer maximum sensitivity to fluctuations in CO2 density Band Pass Filter Sample Chamber IR Source Q Upon exiting the sample cell the beam shines through a band pass filter that allows only light at a wavelength of 4 3 um to pass Finally the beam strikes a solid state photo detector
314. with the power specs on the analyzer s rear panel Model number label Model specs label Identifies the analyzer model number and provides power specs PURGE IN Connect a gas line from the source of sample gas here SAMPLE IEN F oe Calibration gases are also inlet here on units without zero span valve options installed EXHAUST Connect an exhaust gas line of not more than 10 meters long here that leads outside the shelter or immediate area surrounding the instrument Span gas vent outlet for units with zero span valve options installed VENT SPAN Connect an exhaust gas line of not more than 10 meters long here On units with zero span valve options installed connect a gas line to the source of PRESSURE SPAN calibrated span gas here IzS Internal Zero Air On units with zero span valve options installed but no internal zero air scrubber attach a gas line to the source of zero air here RX TX LEDs indicate receive RX and transmit TX activity on the when blinking COM 2 Serial communications port for RS 232 or RS 485 RS 232 Serial communications port for RS 232 only DCE DTE Switch to select either data terminal equipment or data communication equipment during RS 232 communication STATUS For outputs to devices such as Programmable Logic Controllers PLCs ANALOG OUT For voltage or current loop outputs to a strip chart recorder and or a data logger CONTROL IN For remotely act
315. within a text string e Some commands allow you to access variables messages and other items such as DAS data channels by name When using these commands you must type the entire name of the item you cannot abbreviate any names 6 15 2 5 Status Reporting Reporting of status messages as an audit trail is one of the three principal uses for the RS 232 interface the other two being the command line interface for controlling the instrument and the download of data in electronic format You can effectively disable the reporting feature by setting the interface to quiet mode Section 6 11 5 Table 6 10 Status reports include DAS data when reporting is enabled warning messages calibration and diagnostic status messages Refer to Appendix A 3 for a list of the possible messages and this for information on controlling the instrument through the RS 232 interface General Message Format All messages from the instrument including those in response to a command line request are in the format X DDD HH MM Id MESSAGE lt CRLF gt Where X is a command type designator a single character indicating the message type as shown in the Table 6 27 DDD HH MM is the time stamp the date and time when the message was issued It consists of the Day of year DDD as a number from 1 to 366 the hour of the day HH as a number from 00 to 23 and the minute MM as a number from 00 to 59 ID is the analyzer ID a number with 1 to 4 digits
316. wo stage regulator adjusted to less than 15 psi with a shutoff valve and pressure gauge CAUTION Do not use bubble solution with vacuum applied to the analyzer The solution may contaminate the instrument Do not exceed 15 PSIG pressure 1 Turn OFF power to the instrument 2 Install a leak checker or tank of gas as described above on the sample inlet at the rear panel 3 Remove the instrument cover and locate the inlet side of the sample pump Remove the flow assembly from the pump and plug it with the appropriate gas tight fitting Teledyne Analytical Instruments 185 Maintenance Model GFC7000TA Carbon Dioxide Analyzer Pressurize the instrument with the leak checker allowing enough time to fully pressurize the instrument through the critical flow orifice Check each fitting with soap bubble solution looking for bubbles Once the fittings have been wetted with soap solution do not re apply vacuum as it will suck soap solution into the instrument and contaminate it Do not exceed 15 psi pressure If the instrument has one of the zero and span valve options the normally closed ports on each valve should also be separately checked Connect the leak checker to the normally closed ports and check with soap bubble solution Once the leak has been located and repaired the leak down rate should be lt 1 in Hg 0 4 psi in 5 minutes after the pressure is shut off 8 3 4 Performing a Sample Flow Check CAUT

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