Teledyne Carbon Monoxide Alarm GFC 7001E User Manual
Operation Manual  
MODEL GFC 7001E FAMILY  
CARBON MONOXIDE ANALYZERS  
(Includes GFC 7001E, GFC 7001EM)  
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  
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Safety Messages  
Model GFC7001E Carbon Dioxide Analyzer  
SAFETY MESSAGES  
Warning and cautionary messages are provided for the purpose of avoiding risk of personal injury or  
instrument damage. These important safety messages and associated safety alert symbols are found  
throughout this manual; the safety symbols are also located inside the instrument(s). 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  
Technician Symbol: All operations marked with this symbol are to  
be performed by qualified maintenance personnel only.  
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.  
Electrical Ground: This symbol inside the instrument marks the  
central safety grounding point for the instrument.  
CAUTION – GENERAL SAFETY HAZARD  
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).  
Note  
Technical Assistance regarding the use and maintenance of this or any other Teledyne product can be  
obtained by contacting Teledyne’s Customer Service Department:  
Telephone: 800-324-5190  
Email: [email protected]  
or by accessing various service options on our website at http://www.teledyne-api.com/.  
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Safety Messages  
Model GFC7001E Carbon Dioxide Analyzer  
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Warranty  
Model GFC7001E Carbon Dioxide Analyzer  
WARRANTY  
WARRANTY POLICY (02024D)  
Prior to shipment, TAI equipment is thoroughly inspected and tested. Should equipment failure occur, TAI  
assures its customers that prompt service and support will be available.  
COVERAGE  
After the warranty period and throughout the equipment lifetime, TAI stands ready to provide on-site or in-plant  
service at reasonable rates similar to those of other manufacturers in the industry. All maintenance and the first  
level of field troubleshooting are to be performed by the customer.  
See Warranty statement on page 2.  
CAUTION – Avoid Warranty Invalidation  
Failure to comply with proper anti-Electro-Static Discharge (ESD) handling and packing instructions  
and Return Merchandise Authorization (RMA) procedures when returning parts for repair or calibration  
may void your warranty. For anti-ESD handling and packing instructions please refer to “Packing  
Components for Return to Teledyne’s Customer Service” in the Primer on Electro-Static Discharge  
section of this manual, and for RMA procedures please contact Teledyne Customer Service at (626)  
934-1500.  
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Warranty  
Model GFC7001E Carbon Dioxide Analyzer  
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Manual Information  
Model GFC7001E Carbon Dioxide Analyzer  
ABOUT THIS MANUAL  
This manual is comprised of multiple documents, in PDF format, as listed below.  
Part No.  
04288  
Rev  
Name/Description  
D
GFC 7001E/EM Manual  
04906  
H
J
Menu Tree and Software Documentation, L.8 (as Appendix A of this manual)  
Spare Parts List, GFC 7001E (in Appendix B of this manual)  
05362  
05424  
H
Q
G
C
Spare Parts List, GFC 7001EM (in Appendix B of this manual)  
04302  
Recommended Spares Stocking Levels, GFC 7001E (in Appendix B of this manual)  
Recommended Spares Stocking Levels, GFC 7001EM (in Appendix B of this manual)  
Expendables Kit, GFC 7001E/EM (in Appendix B of this manual)  
04834  
009600400  
040360100 A  
Spares Kit, GFC 7001E/EM (1 unit) (in Appendix B of this manual)  
Warranty/Repair Request Questionnaire (as Appendix C of this manual)  
PCA, 03296, IR Photodetector Preamp and Sync Demodulator (In Appendix D of this manual)  
PCA, 03631, 0-20mA driver (in Appendix D of this manual)  
04305  
03297  
03632  
03976  
04354  
05703  
04089  
04136  
04216  
04217  
04259  
04468  
G
K
A
B
D
A
A
B
E
F
PCA, 03975, Keyboard & Display Driver (in Appendix D of this manual)  
Schematic, PCA 04003, Press/Flow (in Appendix D of this manual)  
PCA, 05702, Motherboard, E-Series Gen 4 (in Appendix D of this manual)  
PCA, 04088, Opto Pickup Interface (in Appendix D of this manual)  
PCA, 04135 Rev A, GFC 7001E Relay (in Appendix D of this manual)  
Interconnect Drawing - GFC 7001E SNs >=100 (in Appendix D of this manual)  
Interconnect List - GFC 7001E SNs >=100 (in Appendix D of this manual)  
PCA, 04258, Keyboard & Display Driver (in Appendix D of this manual)  
PCA, 04467, Analog Output Isolator, / Series Resistor (in Appendix D of this manual)  
A
B
NOTE  
We recommend that this manual be read in its entirety before making any attempt made to operate the  
instrument.  
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Manual Information  
Model GFC7001E Carbon Dioxide Analyzer  
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Table of Contents  
Model GFC7001E Carbon Dioxide Analyzer  
TABLE OF CONTENTS  
PART I – GENERAL INFORMATION .................................................................................... 21  
1. INTRODUCTION ................................................................................................................ 23  
1.1. GFC 7001E FAMILY Overview.....................................................................................................................23  
1.2. Additional Documentation .............................................................................................................................24  
1.2.1. Using This Manual .................................................................................................................................25  
2. SPECIFICATIONS AND APPROVALS.............................................................................. 27  
2.1. Specifications................................................................................................................................................27  
2.2. EPA Equivalency Designation ......................................................................................................................28  
2.3. TUV DESIGNATION .....................................................................................................................................29  
2.4. CE Mark Compliance ....................................................................................................................................29  
2.4.1. Emissions Compliance...........................................................................................................................29  
2.4.2. Safety Compliance.................................................................................................................................29  
3. GETTING STARTED.......................................................................................................... 31  
3.1. GFC 7001E/EM Analyzer Layout..................................................................................................................31  
3.2. Unpacking the GFC 7001E/EM Analyzer......................................................................................................36  
3.2.1. Ventilation Clearance.............................................................................................................................37  
3.3. Electrical Connections...................................................................................................................................38  
3.3.1. Power Connection..................................................................................................................................38  
3.3.2. Analog Output Connections..................................................................................................................39  
3.3.3. Connecting the Status Outputs..............................................................................................................39  
3.3.4. Connecting the Control Inputs ...............................................................................................................41  
3.3.5. Connecting the Serial Ports ...................................................................................................................42  
3.3.6. Connecting to a LAN or the Internet ......................................................................................................42  
3.3.7. Connecting to a Multidrop Network........................................................................................................42  
3.4. Pneumatic Connections ................................................................................................................................42  
3.4.1. Calibration Gases ..................................................................................................................................42  
3.4.1.1. Zero Air...........................................................................................................................................42  
3.4.1.2. Span Gas........................................................................................................................................43  
3.4.2. Pneumatic Connections to GFC 7001E/EM Basic Configuration..........................................................44  
3.4.2.1. Sample Gas Source .......................................................................................................................45  
3.4.2.2. Calibration Gas Sources ................................................................................................................45  
3.4.2.3. Input Gas Venting...........................................................................................................................46  
3.4.2.4. Exhaust Outlet................................................................................................................................46  
3.5. Initial Operation.............................................................................................................................................46  
3.5.1. Startup....................................................................................................................................................47  
3.5.2. Warm Up................................................................................................................................................48  
3.5.3. Warning Messages ................................................................................................................................48  
3.5.4. Functional Check ...................................................................................................................................50  
3.6. Initial Calibration of the GFC 7001E/EM.......................................................................................................51  
3.6.1. Interferents for CO2 Measurements.......................................................................................................51  
3.6.2. Initial Calibration Procedure for GFC 7001E/EM Analyzers without Options........................................51  
3.6.2.1. Verifying the GFC 7001E/EM Reporting Range Settings...............................................................52  
3.6.2.2. Dilution Ratio Set Up ......................................................................................................................53  
3.6.2.3. Set CO Span Gas Concentration ...................................................................................................54  
3.6.2.4. Zero/Span Calibration.....................................................................................................................55  
3.6.3. O2 Sensor Calibration Procedure...........................................................................................................56  
3.6.4. CO2 Sensor Calibration Procedure........................................................................................................56  
4. FREQUENTLY ASKED QUESTIONS................................................................................ 57  
4.1. FAQ’s ............................................................................................................................................................57  
4.2. Glossary ........................................................................................................................................................58  
5. OPTIONAL HARDWARE AND SOFTWARE..................................................................... 61  
5.1. External Pumps (OPTions 10A-10E, 11, 13) ................................................................................................61  
5.2. Rack Mount Kits (OPT 20 to OPT 23)...........................................................................................................61  
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5.3. Carrying Strap/Handle (OPT 29)...................................................................................................................62  
5.4. Current Loop Analog Outputs (Option 41) ....................................................................................................62  
5.4.1. Converting Current Loop Analog Outputs to Standard Voltage Outputs...............................................63  
5.5. Expendables and Spares Kits (Options 42A, 45) .........................................................................................64  
5.6. Calibration Valves (Options 50A, 50B, 50E, 50H) ........................................................................................64  
5.6.1. General Information Related to all Valve Options..................................................................................64  
5.6.1.1. Gas Flow Rate................................................................................................................................64  
5.6.1.2. Valve Control..................................................................................................................................64  
5.6.2. Zero/Span Valve (Option 50A)...............................................................................................................64  
5.6.2.1. Internal Pneumatics (OPT 50A) .....................................................................................................65  
5.6.2.2. Pneumatic Set Up (OPT 50A) ........................................................................................................66  
5.6.2.3. Input Gas Venting...........................................................................................................................66  
5.6.2.4. Exhaust Outlet................................................................................................................................66  
5.6.3. Zero/Span/Shutoff Valve (Option 50B) ..................................................................................................67  
5.6.3.1. Internal Pneumatics (OPT 50B) .....................................................................................................67  
5.6.3.2. Pneumatic Set Up (OPT 50B) ........................................................................................................68  
5.6.4. Zero/Span Valve with Internal CO Scrubber (Option 50H)....................................................................69  
5.6.4.1. Internal Pneumatics (OPT 50H) .....................................................................................................69  
5.6.4.2. Pneumatic Set Up (OPT 50H)........................................................................................................70  
5.6.5. Zero/Span/Shutoff with Internal Zero Air Scrubber (Option 50E) ..........................................................71  
5.6.5.1. Internal Pneumatics (OPT 50E) .....................................................................................................71  
5.6.5.2. Pneumatic Set Up (OPT 50E) ........................................................................................................72  
5.7. Communication Options................................................................................................................................73  
5.7.1. RS-232 Modem Cable (Option 60A)......................................................................................................73  
5.7.2. RS-232 Multidrop (Option 62)................................................................................................................73  
5.7.3. Ethernet (Option 63A)............................................................................................................................74  
5.7.4. Ethernet + Multidrop (OPT 63C)............................................................................................................75  
5.8. Second Gas Sensors ....................................................................................................................................75  
5.8.1. Oxygen Sensor (Option 65A).................................................................................................................75  
5.8.1.1. Theory of Operation - Paramagnetic measurement of O2..............................................................75  
5.8.1.2. Operation within the GFC 7001E/EM Analyzer..............................................................................76  
5.8.1.3. Pneumatic Operation of the O2 Sensor..........................................................................................76  
5.9. Carbon Dioxide Sensor (Option 67A) ...........................................................................................................77  
5.9.1. CO2 Sensor Ranges and Specifications................................................................................................77  
5.9.2. Theory of Operation...............................................................................................................................77  
5.9.2.1. NDIR measurement of CO2 ............................................................................................................77  
5.9.2.2. Operation within the GFC 7001E/EM Analyzer..............................................................................78  
5.9.2.3. Pneumatic Operation of the CO2 Sensor .......................................................................................78  
5.9.2.4. Electronic Operation of the CO2 Sensor.........................................................................................79  
5.10. CONCENTRATION ALARM RELAY (Option 61) .......................................................................................80  
5.11. Special Features .........................................................................................................................................82  
5.11.1. Dilution Ratio Option............................................................................................................................82  
5.11.2. Maintenance Mode Switch...................................................................................................................82  
5.11.3. Second Language Switch....................................................................................................................82  
PART II – OPERATING INSTRUCTIONS.............................................................................. 83  
6. BASIC OPERATION .......................................................................................................... 85  
6.1. Overview of Operating Modes ......................................................................................................................85  
6.2. Sample Mode................................................................................................................................................86  
6.3. Warning Messages .......................................................................................................................................88  
6.4. Calibration Mode...........................................................................................................................................89  
6.5. Setup MODE.................................................................................................................................................90  
6.5.1. SETUP CFG: Configuration Information ...........................................................................................91  
6.5.2. SETUP ACAL: Automatic Calibration................................................................................................91  
6.5.3. SETUP PASS: Password Feature.....................................................................................................92  
6.5.4. SETUP CLK: Setting the GFC 7001E/EM Analyzer’s Internal Clock................................................95  
6.5.4.1. Setting the internal Clock’s Time and Day .....................................................................................95  
6.5.4.2. Adjusting the Internal Clock’s Speed..............................................................................................96  
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Model GFC7001E Carbon Dioxide Analyzer  
6.6. SETUP RNGE: Analog Output Reporting Range Configuration ..............................................................97  
6.6.1. Physical Range versus Analog Output Reporting Ranges....................................................................97  
6.6.2. Analog Output Ranges for CO Concentration .......................................................................................98  
6.6.3. Reporting Range Modes........................................................................................................................99  
6.6.3.1. RNGE MODE SNGL: Configuring the GFC 7001E/EM Analyzer for SINGLE Range Mode100  
6.6.3.2. RNGE MODE DUAL: Configuring the GFC 7001E/EM Analyzer for DUAL Range Mode..101  
6.6.3.3. RNGE MODE AUTO: Configuring the GFC 7001E/EM Analyzer for AUTO Range Mode.103  
6.6.4. SETUP RNGE UNIT: Setting the Reporting Range Units of Measure.......................................105  
6.6.5. SETUP RNGE DIL: Using the Optional Dilution Ratio Feature...................................................106  
7. ADVANCED FEATURES ................................................................................................. 107  
7.1. SETUP IDAS: Using the Data Acquisition System (iDAS).....................................................................107  
7.1.1. IDAS Status .........................................................................................................................................107  
7.1.2. IDAS Structure.....................................................................................................................................108  
7.1.2.1. iDAS Channels .............................................................................................................................108  
7.1.3. Default iDAS Channels ........................................................................................................................109  
7.1.4. SETUP DAS VIEW: Viewing iDAS Channels and Individual Records ........................................111  
7.1.5. SETUP DAS EDIT: Accessing the iDAS Edit Mode ....................................................................112  
7.1.5.1. Editing iDAS Data Channel Names..............................................................................................113  
7.1.5.2. Editing iDAS Triggering Events....................................................................................................114  
7.1.5.3. Editing iDAS Parameters..............................................................................................................115  
7.1.5.4. Editing Sample Period and Report Period....................................................................................117  
7.1.5.5. Report Periods in Progress When Instrument Is Powered Off.....................................................118  
7.1.5.6. Editing the Number of Records ....................................................................................................119  
7.1.5.7. RS-232 Report Function...............................................................................................................120  
7.1.5.8. Enabling/Disabling the HOLDOFF Feature..................................................................................121  
7.1.5.9. The Compact Report Feature.......................................................................................................122  
7.1.5.10. The Starting Date Feature..........................................................................................................122  
7.1.6. Disabling/Enabling Data Channels ......................................................................................................122  
7.1.7. Remote iDAS Configuration.................................................................................................................123  
7.1.7.1. iDAS Configuration Using APICOM .............................................................................................123  
7.1.7.2. iDAS Configuration Using Terminal Emulation Programs............................................................124  
7.2. SETUP MORE VARS: Internal Variables (VARS).............................................................................125  
7.3. SETUP MORE DIAG: Using the Diagnostics Functions...................................................................127  
7.3.1. Accessing the Diagnostic Features .....................................................................................................128  
7.4. Using the GFC 7001E/EM Analyzer’s Analog Outputs...............................................................................129  
7.4.1. Accessing the Analog Output Signal Configuration Submenu ............................................................129  
7.4.2. Analog Output Voltage / Current Range Selection..............................................................................131  
7.4.3. Calibration of the Analog Outputs........................................................................................................133  
7.4.3.1. Enabling or Disabling the AutoCal for an Individual Analog Output.............................................133  
7.4.3.2. Automatic Calibration of the Analog Outputs ...............................................................................134  
7.4.3.3. Individual Calibration of the Analog Outputs................................................................................136  
7.4.3.4. Manual Calibration of the Analog Outputs Configured for Voltage Ranges.................................137  
7.4.3.5. Manual Adjustment of Current Loop Output Span and Offset .....................................................139  
7.4.4. Turning an analog output Over-Range Feature ON/OFF....................................................................142  
7.4.5. Adding a Recorder Offset to an analog output ....................................................................................143  
7.4.6. Selecting a Test Channel Function for Output A4 ...............................................................................144  
7.4.7. AIN Calibration.....................................................................................................................................146  
7.5. SETUP MORE ALRM: Using the Gas Concentration Alarms ............................................................147  
7.5.1. Setting the GFC 7001E Concentration Alarm Limits ...........................................................................147  
8. REMOTE OPERATION .................................................................................................... 149  
8.1. SETUP MORECOMM: Using the Analyser’s Communication Ports .................................................149  
8.1.1. RS-232 DTE and DCE Communication...............................................................................................149  
8.1.2. COMM Port Default Settings................................................................................................................149  
8.1.3. COMM Port Baud Rate........................................................................................................................151  
8.1.4. COMM Port Communication Modes....................................................................................................152  
8.1.5. COMM Port Testing .............................................................................................................................154  
8.1.6. Machine ID...........................................................................................................................................155  
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Model GFC7001E Carbon Dioxide Analyzer  
8.1.7. Terminal Operating Modes ..................................................................................................................156  
8.1.7.1. Help Commands in Terminal Mode..............................................................................................156  
8.1.7.2. Command Syntax.........................................................................................................................157  
8.1.7.3. Data Types ...................................................................................................................................157  
8.1.7.4. Status Reporting...........................................................................................................................158  
8.1.7.5. COMM Port Password Security....................................................................................................159  
8.2. Multidrop RS-232 Set Up ............................................................................................................................160  
8.3. RS-485 Configuration of COM2..................................................................................................................162  
8.4. Remote Access via the Ethernet.................................................................................................................164  
8.4.1. Ethernet Card COM2 Communication Modes and Baud Rate............................................................164  
8.4.2. Configuring the Ethernet Interface Option using DHCP ......................................................................165  
8.4.3. Manually Configuring the Network IP Addresses ................................................................................167  
8.4.4. Changing the Analyzer’s HOSTNAME ................................................................................................170  
8.5. MODBUS SetUp .........................................................................................................................................171  
8.5.1. Remote Access by Modem..................................................................................................................172  
8.6. Using the GFC 7001E/EM with a Hessen Protocol Network ......................................................................175  
8.6.1. General Overview of Hessen Protocol.................................................................................................175  
8.6.2. Hessen COMM Port Configuration ......................................................................................................175  
8.6.3. Activating Hessen Protocol..................................................................................................................176  
8.6.4. Selecting a Hessen Protocol Type.......................................................................................................177  
8.6.5. Setting The Hessen Protocol Response Mode....................................................................................178  
8.6.6. Hessen Protocol Gas List Entries........................................................................................................179  
8.6.6.1. Gas List Entry Format and Definitions..........................................................................................179  
8.6.6.2. Editing or Adding HESSEN Gas List Entries................................................................................180  
8.6.6.3. Deleting HESSEN Gas List Entries..............................................................................................181  
8.6.7. Setting Hessen Protocol Status Flags .................................................................................................182  
8.6.8. Instrument ID Code..............................................................................................................................183  
8.7. APICOM Remote Control Program.............................................................................................................184  
9. CALIBRATION PROCEDURES....................................................................................... 185  
9.1. Before Calibration .......................................................................................................................................186  
9.1.1. Required Equipment, Supplies, and Expendables ..............................................................................186  
9.1.2. Calibration Gases ................................................................................................................................186  
9.1.2.1. Zero Air.........................................................................................................................................186  
9.1.2.2. Span Gas......................................................................................................................................187  
9.1.2.3. Traceability ...................................................................................................................................187  
9.1.3. Data Recording Devices ......................................................................................................................187  
9.2. Manual Calibration Checks and Calibration of the GFC 7001E/EM Analyzer in its Base Configuration....188  
9.2.1. Setup for Basic Calibration Checks and Calibration............................................................................188  
9.2.2. Performing a Basic Manual Calibration Check ....................................................................................190  
9.2.3. Performing a Basic Manual Calibration ...............................................................................................191  
9.2.3.1. Setting the Expected Span Gas Concentration............................................................................191  
9.2.3.2. Zero/Span Point Calibration Procedure........................................................................................192  
9.3. Manual Calibration with Zero/Span Valves.................................................................................................193  
9.3.1. Setup for Calibration Using Valve Options ..........................................................................................193  
9.3.2. Manual Calibration Checks with Valve Options Installed ....................................................................195  
9.3.3. Manual Calibration Using Valve Options .............................................................................................196  
9.3.3.1. Setting the Expected Span Gas Concentration............................................................................196  
9.3.3.2. Zero/Span Point Calibration Procedure........................................................................................197  
9.3.3.3. Use of Zero/Span Valve with Remote Contact Closure ...............................................................198  
9.4. Automatic Zero/Span Cal/Check (AutoCal) ................................................................................................198  
9.4.1. SETUP ACAL: Programming and AUTO CAL Sequence...............................................................201  
9.4.1.1. AutoCal with Auto or Dual Reporting Ranges Modes Selected...................................................203  
9.5. CO Calibration Quality ................................................................................................................................204  
9.6. Calibration of the GFC 7001E/EM’s Electronic Subsystems ......................................................................205  
9.6.1. Dark Calibration Test ...........................................................................................................................205  
9.6.2. Pressure Calibration ............................................................................................................................206  
9.6.3. Flow Calibration ...................................................................................................................................207  
9.6.4. Electrical Test Calibration ....................................................................................................................208  
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9.7. Calibration of Optional Sensors ..................................................................................................................209  
9.7.1. O2 Sensor Calibration Procedure.........................................................................................................209  
9.7.1.1. O2 Calibration Setup.....................................................................................................................209  
9.7.1.2. Set O2 Span Gas Concentration...................................................................................................210  
9.7.1.3. Activate O2 Sensor Stability Function...........................................................................................211  
9.7.1.4. O2ZERO/SPAN CALIBRATION....................................................................................................212  
9.7.2. CO2 Sensor Calibration Procedure......................................................................................................213  
9.7.2.1. CO2 Calibration Setup ..................................................................................................................213  
9.7.2.2. Set CO2 Span Gas Concentration:...............................................................................................213  
9.7.2.3. Activate CO2 Sensor Stability Function........................................................................................214  
9.7.2.4. CO2 Zero/Span Calibration...........................................................................................................215  
10. EPA CALIBRATION PROTOCOL................................................................................. 217  
10.1. Calibration Requirements..........................................................................................................................217  
10.1.1. Calibration of Equipment - General Guidelines .................................................................................217  
10.1.2. Calibration Equipment, Supplies, and Expendables..........................................................................218  
10.1.2.1. Data Recording Device...............................................................................................................218  
10.1.2.2. Spare Parts and Expendable Supplies.......................................................................................218  
10.1.3. Recommended Standards for Establishing Traceability....................................................................219  
10.1.4. Calibration Frequency........................................................................................................................220  
10.1.5. Level 1 Calibrations versus Level 2 Checks......................................................................................220  
10.2. ZERO and SPAN Checks .........................................................................................................................221  
10.2.1. Zero/Span Check Procedures ...........................................................................................................222  
10.2.2. Precision Check.................................................................................................................................222  
10.3. Precisions Calibration ...............................................................................................................................222  
10.3.1. Precision Calibration Procedures ......................................................................................................223  
10.4. Auditing Procedure....................................................................................................................................223  
10.4.1. Calibration Audit.................................................................................................................................223  
10.4.2. Data Reduction Audit.........................................................................................................................223  
10.4.3. System Audit/Validation.....................................................................................................................224  
10.5. Dynamic Multipoint Calibration Procedure................................................................................................224  
10.5.1. Linearity test.......................................................................................................................................224  
10.6. References................................................................................................................................................226  
PART III – TECHNICAL INFORMATION ............................................................................. 227  
11. THEORY OF OPERATION ............................................................................................ 229  
11.1. Measurement Method ...............................................................................................................................229  
11.1.1. Beer’s Law .........................................................................................................................................229  
11.2. Measurement Fundamentals ....................................................................................................................229  
11.2.1. Gas Filter Correlation.........................................................................................................................230  
11.2.1.1. The GFC Wheel..........................................................................................................................231  
11.2.1.2. The Measure Reference Ratio ...................................................................................................232  
11.2.1.3. Summary Interference Rejection................................................................................................233  
11.3. Pneumatic Operation ................................................................................................................................234  
11.4. Flow Rate Control .....................................................................................................................................235  
11.4.1.1. Critical Flow Orifice.....................................................................................................................235  
11.4.2. Particulate Filter.................................................................................................................................236  
11.4.3. Pneumatic Sensors............................................................................................................................236  
11.4.3.1. Sample Pressure Sensor ...........................................................................................................236  
11.4.3.2. Sample Flow Sensor ..................................................................................................................236  
11.5. Electronic Operation..................................................................................................................................237  
11.5.1. Overview ............................................................................................................................................237  
11.5.2. Central Processing Unit (CPU)..........................................................................................................239  
11.5.3. Optical Bench & GFC Wheel .............................................................................................................240  
11.5.3.1. Temperature Control ..................................................................................................................240  
11.5.3.2. IR Source....................................................................................................................................240  
11.5.3.3. GFC Wheel.................................................................................................................................240  
11.5.3.4. IR Photo-Detector.......................................................................................................................242  
11.5.4. Synchronous Demodulator (Sync/Demod) Assembly .......................................................................242  
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Model GFC7001E Carbon Dioxide Analyzer  
11.5.4.1. Overview.....................................................................................................................................242  
11.5.4.2. Signal Synchronization and Demodulation ................................................................................243  
11.5.4.3. Sync/Demod Status LED’s.........................................................................................................244  
11.5.4.4. Photo-Detector Temperature Control.........................................................................................244  
11.5.4.5. Dark Calibration Switch..............................................................................................................244  
11.5.4.6. Electric Test Switch ....................................................................................................................245  
11.5.5. Relay Board .......................................................................................................................................245  
11.5.5.1. Heater Control ............................................................................................................................245  
11.5.5.2. GFC Wheel Motor Control:.........................................................................................................245  
11.5.5.3. Zero/Span Valve Options ...........................................................................................................245  
11.5.5.4. IR Source....................................................................................................................................245  
11.5.5.5. Status LED’s...............................................................................................................................246  
11.5.5.6. I2C Watch Dog Circuitry..............................................................................................................246  
11.5.6. MotherBoard ......................................................................................................................................247  
11.5.6.1. A to D Conversion ......................................................................................................................247  
11.5.6.2. Sensor Inputs .............................................................................................................................247  
11.5.6.3. Thermistor Interface ...................................................................................................................247  
11.5.6.4. Analog Outputs...........................................................................................................................248  
11.5.6.5. Internal Digital I/O.......................................................................................................................248  
11.5.6.6. External Digital I/O......................................................................................................................248  
11.5.7. I2C Data Bus ......................................................................................................................................249  
11.5.8. Power Supply/ Circuit Breaker...........................................................................................................249  
11.5.9. Communication Interface...................................................................................................................251  
11.5.10. Front Panel Interface .......................................................................................................................252  
11.5.10.1. Analyzer Status LED’s..............................................................................................................252  
11.5.10.2. Keyboard ..................................................................................................................................252  
11.5.10.3. Display......................................................................................................................................253  
11.5.10.4. Keyboard/Display Interface Electronics....................................................................................253  
11.5.11. Software Operation..........................................................................................................................256  
11.5.12. Adaptive Filter..................................................................................................................................256  
11.5.13. Calibration - Slope and Offset..........................................................................................................257  
11.5.14. Measurement Algorithm...................................................................................................................257  
11.5.15. Temperature and Pressure Compensation......................................................................................257  
11.5.16. Internal Data Acquisition System (iDAS) .........................................................................................257  
12. MAINTENANCE SCHEDULE & PROCEDURES .......................................................... 259  
12.1. Maintenance Schedule..............................................................................................................................259  
12.2. Predicting Failures Using the Test Functions ...........................................................................................263  
12.3. Maintenance Procedures ..........................................................................................................................264  
12.3.1. Replacing the Sample Particulate Filter.............................................................................................264  
12.3.2. Rebuilding the Sample Pump ............................................................................................................264  
12.3.3. Performing Leak Checks....................................................................................................................265  
12.3.3.1. Vacuum Leak Check and Pump Check......................................................................................265  
12.3.3.2. Pressure Leak Check .................................................................................................................265  
12.3.4. Performing a Sample Flow Check .....................................................................................................266  
12.3.5. Cleaning the Optical Bench ...............................................................................................................266  
12.3.6. Cleaning Exterior Surfaces of the GFC 7001E/EM ...........................................................................266  
13. TROUBLESHOOTING & REPAIR................................................................................. 267  
13.1. General Troubleshooting...........................................................................................................................267  
13.1.1. Fault Diagnosis with WARNING Messages.......................................................................................268  
13.1.2. Fault Diagnosis with TEST Functions................................................................................................270  
13.1.3. DIAG SIGNAL I/O: Using the Diagnostic Signal I/O Function......................................................273  
13.1.4. Internal Electronic Status LED’s ........................................................................................................274  
13.1.4.1. CPU Status Indicator..................................................................................................................274  
13.1.4.2. Sync Demodulator Status LED’s................................................................................................275  
13.1.4.3. Relay Board Status LED’s..........................................................................................................276  
13.2. Gas Flow Problems...................................................................................................................................278  
13.2.1. GFC 7001E/EM Internal Gas Flow Diagrams....................................................................................278  
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Model GFC7001E Carbon Dioxide Analyzer  
13.2.2. Typical Sample Gas Flow Problems..................................................................................................282  
13.2.2.1. Flow is Zero................................................................................................................................282  
13.2.2.2. Low Flow ....................................................................................................................................282  
13.2.2.3. High Flow....................................................................................................................................282  
13.2.2.4. Displayed Flow = “Warnings” .....................................................................................................283  
13.2.2.5. Actual Flow Does Not Match Displayed Flow ............................................................................283  
13.2.2.6. Sample Pump.............................................................................................................................283  
13.3. Calibration Problems.................................................................................................................................283  
13.3.1. Miscalibrated......................................................................................................................................283  
13.3.2. Non-Repeatable Zero and Span........................................................................................................284  
13.3.3. Inability to Span – No SPAN Key.......................................................................................................284  
13.3.4. Inability to Zero – No ZERO Key .......................................................................................................284  
13.4. Other Performance Problems ...................................................................................................................285  
13.4.1. Temperature Problems ......................................................................................................................285  
13.4.1.1. Box or Sample Temperature ......................................................................................................285  
13.4.1.2. Bench Temperature....................................................................................................................285  
13.4.1.3. GFC Wheel Temperature...........................................................................................................286  
13.4.1.4. IR Photo-Detector TEC Temperature.........................................................................................286  
13.4.2. Excessive Noise.................................................................................................................................287  
13.5. Subsystem Checkout ................................................................................................................................288  
13.5.1. AC Mains Configuration.....................................................................................................................288  
13.5.2. DC Power Supply...............................................................................................................................288  
13.5.3. I2C Bus...............................................................................................................................................289  
13.5.4. Keyboard/Display Interface................................................................................................................289  
13.5.5. Relay Board .......................................................................................................................................290  
13.5.6. Sensor Assembly...............................................................................................................................291  
13.5.6.1. Sync/Demodulator Assembly .....................................................................................................291  
13.5.6.2. Electrical Test.............................................................................................................................291  
13.5.6.3. Opto Pickup Assembly ...............................................................................................................292  
13.5.6.4. GFC Wheel Drive .......................................................................................................................292  
13.5.6.5. IR Source....................................................................................................................................292  
13.5.6.6. Pressure/Flow Sensor Assembly ...............................................................................................293  
13.5.7. Motherboard.......................................................................................................................................294  
13.5.7.1. A/D Functions.............................................................................................................................294  
13.5.7.2. Test Channel / Analog Outputs Voltage.....................................................................................294  
13.5.7.3. Analog Outputs: Current Loop....................................................................................................295  
13.5.7.4. Status Outputs............................................................................................................................296  
13.5.7.5. Control Inputs – Remote Zero, Span..........................................................................................297  
13.5.8. CPU....................................................................................................................................................297  
13.5.9. RS-232 Communications...................................................................................................................297  
13.5.9.1. General RS-232 Troubleshooting...............................................................................................297  
13.5.9.2. Troubleshooting Analyzer/Modem or Terminal Operation .........................................................298  
13.5.10. The Optional CO2 Sensor ................................................................................................................298  
13.6. Repair Procedures ....................................................................................................................................299  
13.6.1. Repairing Sample Flow Control Assembly ........................................................................................299  
13.6.2. Removing/Replacing the GFC Wheel................................................................................................300  
13.6.3. Checking and Adjusting the Sync/Demodulator, Circuit Gain (CO MEAS) ......................................302  
13.6.3.1. Checking the Sync/Demodulator Circuit Gain............................................................................302  
13.6.3.2. Adjusting the Sync/Demodulator, Circuit Gain...........................................................................303  
13.6.4. Disk-On-Module Replacement Procedure.........................................................................................304  
13.7. Technical Assistance ................................................................................................................................304  
14. A PRIMER ON ELECTRO-STATIC DISCHARGE......................................................... 305  
14.1. How Static Charges are Created ..............................................................................................................305  
14.2. How Electro-Static Charges Cause Damage............................................................................................306  
14.3. Common Myths About ESD Damage .......................................................................................................307  
14.4. Basic Principles of Static Control..............................................................................................................307  
14.4.1. General Rules....................................................................................................................................307  
14.4.2. Basic anti-ESD Procedures for Analyzer Repair and Maintenance ..................................................309  
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Model GFC7001E Carbon Dioxide Analyzer  
14.4.2.1. Working at the Instrument Rack.................................................................................................309  
14.4.2.2. Working at an Anti-ESD Work Bench.........................................................................................309  
14.4.2.3. Transferring Components from Rack to Bench and Back..........................................................310  
14.4.2.4. Opening Shipments from Teledyne API’ Customer Service ......................................................310  
14.4.2.5. Packing Components for Return to Teledyne’s Customer Service............................................311  
LIST OF APPENDICES  
APPENDIX A - VERSION SPECIFIC SOFTWARE DOCUMENTATION (Revision L.8)  
APPENDIX A-1: GFC 7001E/EM Software Menu Trees  
APPENDIX A-2: Setup Variables For Serial I/O  
APPENDIX A-3: Warnings and Test Functions  
APPENDIX A-4: GFC 7001E/EM Signal I/O Definitions  
APPENDIX A-5: GFC 7001E/EM iDAS Functions  
APPENDIX A-6: Terminal Command Designators  
APPENDIX A-7: MODBUS Register  
APPENDIX B - GFC 7001E/EM SPARE PARTS LIST  
APPENDIX C - REPAIR QUESTIONNAIRE - GFC 7001E  
APPENDIX D - ELECTRONIC SCHEMATICS  
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 5-1:  
Figure 5-2:  
Figure 5-3:  
Figure 5-4:  
Figure 5-5:  
Figure 5-6:  
Figure 5-7:  
Figure 5-8:  
Figure 5-9:  
Figure 5-10:  
Figure 5-11:  
Front Panel Layout.......................................................................................................................31  
Rear Panel Layout .......................................................................................................................32  
Internal Layout – GFC 7001E......................................................................................................33  
Internal Layout – GFC 7001EM with CO2 and O2 Sensor Option................................................34  
Optical Bench Layout...................................................................................................................35  
GFC 7001E/EM Internal Gas Flow (Basic Configuration) ...........................................................36  
Analog Output Connector ............................................................................................................39  
Status Output Connector .............................................................................................................40  
Control Input Connector...............................................................................................................41  
Pneumatic Connections–Basic Configuration–Using Bottled Span Gas.....................................44  
Pneumatic Connections–Basic Configuration–Using Gas Dilution Calibrator.............................45  
GFC 7001E/EM with Carrying Strap Handle and Rack Mount Brackets.....................................62  
Current Loop Option Installed on the Motherboard .....................................................................63  
Internal Pneumatic Flow OPT 50A – Zero/Span Valves..............................................................65  
Pneumatic Connections – Option 50A: Zero/Span Calibration Valves........................................66  
Internal Pneumatic Flow OPT 50B – Zero/Span/Shutoff Valves .................................................67  
Pneumatic Connections – Option 50B: Zero/Pressurized Span Calibration Valves....................68  
Internal Pneumatic Flow OPT 50H – Zero/Span Valves with Internal Zero Air Scrubber ...........69  
Pneumatic Connections – Option 50H: Zero/Span Calibration Valves .......................................70  
Internal Pneumatic Flow OPT 50E – Zero/Span/Shutoff Valves with Internal Zero Air Scrubber71  
Pneumatic Connections – Option 50E: Zero/Span Calibration Valves........................................72  
GFC 7001E/EM Multidrop Card Seated on CPU above Disk on Module....................................73  
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Model GFC7001E Carbon Dioxide Analyzer  
Figure 5-12:  
Figure 5-13:  
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Figure 5-17:  
Figure 5-18:  
Figure 5-19:  
Figure 6-1:  
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Figure 7-1:  
Figure 7-2:  
Figure 7-3:  
Figure 7-4:  
Figure 7-5:  
Figure 7-6:  
Figure 7-7:  
Figure 8-1:  
Figure 8-2:  
Figure 8-3:  
Figure 8-4:  
Figure 8-5:  
Figure 8-6:  
Figure 8-7:  
Figure 8-8:  
Figure 9-1:  
Figure 9-2:  
Figure 9-3:  
Figure 9-4:  
Figure 9-5:  
Figure 9-6:  
Figure 9-7:  
Figure 9-8:  
Figure 11-1:  
Figure 11-2:  
Figure 11-3:  
Figure 11-4:  
Figure 11-5:  
Figure 11-6:  
Figure 11-7:  
Figure 11-8:  
Figure 11-9:  
Figure 11-10:  
Figure 11-11:  
Figure 11-12:  
Figure 11-13:  
Figure 11-14:  
Figure 11-15:  
Figure 11-16:  
Figure 11-17:  
Figure 11-18:  
Figure 11-19:  
Figure 12-1:  
Figure 13-1:  
Figure 13-2:  
Figure 13-3:  
GFC 7001E/EM Ethernet Card....................................................................................................74  
GFC 7001E/EM Rear Panel with Ethernet Installed....................................................................74  
Oxygen Sensor - Principle of Operation ......................................................................................75  
GFC 7001E/EM – Internal Pneumatics with O2 Sensor Option 65A ...........................................76  
CO2 sensor Theory of Operation .................................................................................................78  
GFC 7001E/EM – Internal Pneumatics with CO2 Sensor Option 66 ...........................................79  
CO2 Sensor Option PCA Layout and Electronic Connections.....................................................79  
Concentration Alarm Relay..........................................................................................................80  
Front Panel Display......................................................................................................................85  
Viewing GFC 7001E/EM Test Functions .....................................................................................86  
Viewing and Clearing GFC 7001E/EM WARNING Messages ....................................................89  
Analog Output Connector Pin Out ...............................................................................................98  
Default iDAS Channel Setup .....................................................................................................110  
APICOM User Interface for Configuring the iDAS.....................................................................123  
iDAS Configuration Through a Terminal Emulation Program....................................................124  
Accessing the Analog I/O Configuration Submenus..................................................................130  
Setup for Checking / Calibrating DCV Analog Output Signal Levels.........................................137  
Setup for Checking / Calibration Current Output Signal Levels Using an Ammeter..................139  
Alternative Setup Using 250Ω Resistor for Checking Current Output Signal Levels ................141  
Default Pin Assignments for Back Panel COMM Port connectors (RS-232 DCE & DTE) ........150  
Default Pin Assignments for CPU COM Port connector (RS-232)............................................150  
Location of JP2 on RS-232-Multidrop PCA (Option 62) ............................................................160  
RS-232-Multidrop PCA Host/Analyzer Interconnect Diagram ...................................................161  
CPU RS-485 Setup....................................................................................................................162  
Back Panel Connector Pin-Outs for COM2 in RS-485 Mode. ...................................................163  
CPU Connector Pin-Outs for COM2 in RS-485 Mode...............................................................163  
APICOM Remote Control Program Interface.............................................................................184  
Pneumatic Connections – Basic Configuration – Using Bottled Span Gas...............................188  
Pneumatic Connections – Basic Configuration – Using Gas Dilution Calibrator.......................189  
Pneumatic Connections – Option 50A: Zero/Span Calibration Valves......................................193  
Pneumatic Connections – Option 50B: Zero/Pressurized Span Calibration Valves..................193  
Pneumatic Connections – Option 51B: Zero/Span Calibration Valves......................................194  
Pneumatic Connections – Option 51C: Zero/Span Calibration Valves .....................................194  
O2 Sensor Calibration Set Up ....................................................................................................209  
CO2 Sensor Calibration Set Up..................................................................................................213  
Measurement Fundamentals.....................................................................................................230  
GFC Wheel ................................................................................................................................230  
Measurement Fundamentals with GFC Wheel..........................................................................231  
Effect of CO in the Sample on CO MEAS & CO REF ...............................................................232  
Effects of Interfering Gas on CO MEAS & CO REF ..................................................................233  
Chopped IR Signal.....................................................................................................................233  
Internal Pneumatic Flow – Basic Configuration.........................................................................234  
Flow Control Assembly & Critical Flow Orifice...........................................................................235  
GFC 7001E/EM Electronic Block Diagram ................................................................................238  
GFC Light Mask.........................................................................................................................241  
Segment Sensor and M/R Sensor Output .................................................................................241  
GFC 7001E/EM Sync/Demod Block Diagram ...........................................................................243  
Sample & Hold Timing ...............................................................................................................244  
Location of relay board Status LED’s ........................................................................................246  
Power Distribution Block Diagram .............................................................................................250  
Interface Block Diagram.............................................................................................................251  
GFC 7001E/EM Front Panel Layout..........................................................................................252  
Keyboard and Display Interface Block Diagram........................................................................253  
Basic Software Operation ..........................................................................................................256  
Sample Particulate Filter Assembly...........................................................................................264  
Viewing and Clearing Warning Messages.................................................................................268  
Example of Signal I/O Function .................................................................................................273  
CPU Status Indicator .................................................................................................................274  
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Model GFC7001E Carbon Dioxide Analyzer  
Figure 13-4:  
Figure 13-5:  
Figure 13-6:  
Figure 13-7:  
Figure 13-8:  
Figure 13-9:  
Figure 13-10:  
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Figure 13-14:  
Figure 13-15:  
Figure 13-16:  
Figure 13-17:  
Figure 13-18:  
Figure 13-19:  
Figure 13-20:  
Figure 14-1:  
Figure 14-2:  
Sync/Demod Board Status LED Locations................................................................................275  
Relay Board Status LEDs ..........................................................................................................276  
GFC 7001E/EM – Basic Internal Gas Flow ...............................................................................278  
Internal Pneumatic Flow OPT 50A – Zero/Span Valves (OPT 50A & 50B) ..............................279  
Internal Pneumatic Flow OPT 50B – Zero/Span/Shutoff Valves ...............................................279  
Internal Pneumatic Flow OPT 51B – Zero/Span Valves with Internal Zero Air Scrubber..........280  
Internal Pneumatic Flow OPT 51C – Zero/Span/Shutoff w/ Internal Zero Air Scrubber ...........280  
GFC 7001E/EM – Internal Pneumatics with O2 Sensor Option 65............................................281  
GFC 7001E/EM – Internal Pneumatics with CO2 Sensor Option 66 .........................................281  
Location of Diagnostic LED’s onCO2 Sensor PCA ....................................................................298  
Critical Flow Restrictor Assembly Disassembly.........................................................................299  
Opening the GFC Wheel Housing .............................................................................................300  
Removing the Opto-Pickup Assembly .......................................................................................301  
Removing the GFC Wheel Housing...........................................................................................301  
Removing the GFC Wheel.........................................................................................................302  
Location of Sync/Demod Housing Mounting Screws.................................................................303  
Location of Sync/Demod Gain Potentiometer............................................................................303  
Triboelectric Charging................................................................................................................305  
Basic anti-ESD Workbench........................................................................................................307  
LIST OF TABLES  
Table 2-1:  
Table 3-1:  
Table 3-2:  
Table 3-3:  
Table 3-4:  
Table 3-5:  
Table 3-6:  
Table 3-7:  
Table 3-8:  
Table 3-9:  
Table 5-1:  
Table 5-2:  
Table 5-3:  
Table 5-4:  
Table 5-5:  
Table 5-6:  
Table 5-7:  
Table 6-1:  
Table 6-2:  
Table 6-3:  
Table 6-4:  
Table 6-5:  
Table 6-6:  
Table 6-7:  
Table 7-1:  
Table 7-2:  
Table 7-3:  
M 300E/300EM Basic Unit Specifications....................................................................................27  
Front Panel Nomenclature...........................................................................................................31  
Inlet / Outlet Connector Nomenclature ........................................................................................32  
Ventilation Clearance...................................................................................................................37  
Analog Output Pin-Outs...............................................................................................................39  
Status Output Signals ..................................................................................................................40  
Control Input Signals....................................................................................................................41  
NIST-SRM's Available for Traceability of CO Calibration Gases..................................................43  
Front Panel Display during System Warm-Up.............................................................................48  
Possible Warning Messages at Start-Up.....................................................................................49  
Zero/Span Valve Operating States for Option 52........................................................................65  
Zero/Span Valve Operating States for Option 50B......................................................................67  
Zero/Span Valve Operating States for Option 50H .....................................................................69  
Zero/Span Valve Operating States for Option 50E......................................................................71  
GFC 7001E/EM Modem Cable Options.......................................................................................73  
CO2 Sensor - Available Ranges...................................................................................................77  
CO2 Sensor Specifications...........................................................................................................77  
Analyzer Operating Modes ..........................................................................................................85  
Test Functions Defined................................................................................................................87  
List of Warning Messages............................................................................................................88  
Primary Setup Mode Features and Functions .............................................................................90  
Secondary Setup Mode Features and Functions ........................................................................90  
Password Levels..........................................................................................................................92  
GFC 7001E Family Physical range by Model..............................................................................97  
Front Panel LED Status Indicators for iDAS..............................................................................107  
iDAS Data Channel Properties ..................................................................................................108  
iDAS Data Parameter Functions................................................................................................115  
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Model GFC7001E Carbon Dioxide Analyzer  
Table 7-4:  
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Table 9-2:  
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Table 9-4:  
Table 9-5:  
Table 10-1:  
Table 10-2:  
Table 10-3:  
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Table 11-3:  
Table 11-4:  
Table 11-5:  
Table 12-1:  
Table 12-2:  
Table 12-3:  
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Table 13-2:  
Table 13-3:  
Table 13-4:  
Table 13-5:  
Table 13-6:  
Table 13-7:  
Table 13-8:  
Table 13-9:  
Table 13-10:  
Table 13-11:  
Table 13-12:  
Table 14-1:  
Table 14-2:  
Variable Names (VARS) ............................................................................................................125  
Diagnostic Mode (DIAG) Functions ...........................................................................................127  
DIAG - Analog I/O Functions .....................................................................................................129  
Analog Output Voltage Range Min/Max ....................................................................................131  
Voltage Tolerances for the TEST CHANNEL Calibration..........................................................137  
Current Loop Output Check.......................................................................................................141  
Test Channels Functions available on the GFC 7001E/EM’s Analog Output ...........................144  
CO Concentration Alarm Default Settings .................................................................................147  
COMM Port Communication Modes..........................................................................................152  
Terminal Mode Software Commands ........................................................................................156  
Teledyne’s Serial I/O Command Types.....................................................................................157  
Ethernet Status Indicators..........................................................................................................164  
LAN/Internet Configuration Properties.......................................................................................165  
RS-232 Communication Parameters for Hessen Protocol ........................................................175  
Teledyne’s Hessen Protocol Response Modes.........................................................................178  
Default Hessen Status Flag Assignments .................................................................................182  
NIST-SRMs Available for Traceability of CO Calibration Gases ................................................187  
AUTOCAL Modes ......................................................................................................................198  
AutoCal Attribute Setup Parameters..........................................................................................199  
Example AutoCal Sequence......................................................................................................200  
Calibration Data Quality Evaluation...........................................................................................204  
Matrix for Calibration Equipment & Supplies .............................................................................219  
Activity Matrix for Quality Assurance Checks ............................................................................220  
Definition of Level 1 and Level 2 Zero and Span Checks..........................................................221  
Absorption Path Lengths for GFC 7001E and GFC 7001EM....................................................230  
Sync DEMOD Sample and Hold Circuits...................................................................................243  
Sync/Demod Status LED Activity...............................................................................................244  
Relay Board Status LED’s .........................................................................................................246  
Front Panel Status LED’s...........................................................................................................252  
GFC 7001E/EM Maintenance Schedule....................................................................................261  
GFC 7001E/EM Test Function Record......................................................................................262  
Predictive uses for Test Functions.............................................................................................263  
Warning Messages - Indicated Failures ....................................................................................269  
Test Functions - Indicated Failures............................................................................................271  
Sync/Demod Board Status Failure Indications ..........................................................................275  
I2C Status LED Failure Indications.............................................................................................276  
Relay Board Status LED Failure Indications..............................................................................277  
DC Power Test Point and Wiring Color Codes..........................................................................288  
DC Power Supply Acceptable Levels ........................................................................................289  
Relay Board Control Devices.....................................................................................................290  
Opto Pickup Board Nominal Output Frequencies......................................................................292  
Analog Output Test Function - Nominal Values Voltage Outputs .............................................294  
Analog Output Test Function - Nominal Values Voltage Outputs .............................................295  
Status Outputs Check................................................................................................................296  
Static Generation Voltages for Typical Activities.......................................................................305  
Sensitivity of Electronic Devices to Damage by ESD................................................................306  
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Model GFC7001E Carbon Dioxide Analyzer  
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Part 1 General Information  
Model GFC7001E Carbon Dioxide Analyzer  
PART I  
–
GENERAL INFORMATION  
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Part 1 General Information  
Model GFC7001E Carbon Dioxide Analyzer  
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Introduction  
Model GFC7001E Carbon Dioxide Analyzer  
1. INTRODUCTION  
1.1. GFC 7001E FAMILY OVERVIEW  
The family includes the GFC 7001E and the GFC 7001EM Gas Filter Correlation (GFC) Carbon Monoxide  
Analyzer. The GFC 7001E family of analyzers is a microprocessor-controlled analyzer that determines the  
concentration of carbon monoxide (CO) in a sample gas drawn through the instrument. It uses a method based  
on the Beer-Lambert law, an empirical relationship that relates the absorption of light to the properties of the  
material through which the light is traveling over a defined distance. In this case the light is infrared radiation (IR)  
traveling through a sample chamber filled with gas bearing a varying concentration of CO.  
The GFC 7001E/EM uses Gas Filter Correlation (GFC) to overcome the interfering effects of various other gases  
(such as water vapor) that also absorb IR. The analyzer passes the IR beam through a spinning wheel made up  
of two separate chambers, one containing a high concentration of CO, known as the reference, and the other  
containing a neutral gas known as the measure. The concentration of CO in the sample chamber is computed by  
taking the ratio of the instantaneous measure and reference values and then compensating the ratio for sample  
temperature and pressure.  
The GFC 7001E/EM Analyzer’s multi-tasking software gives the ability to track and report a large number of  
operational parameters in real time. These readings are compared to diagnostic limits kept in the analyzers  
memory and should any fall outside of those limits the analyzer issues automatic warnings.  
Built-in data acquisition capability, using the analyzer's internal memory, allows the logging of multiple  
parameters including averaged or instantaneous concentration values, calibration data, and operating  
parameters such as pressure and flow rate. Stored data are easily retrieved through the serial port or optional  
Ethernet port via our APICOM software or from the front panel, allowing operators to perform predictive  
diagnostics and enhanced data analysis by tracking parameter trends. Multiple averaging periods of one minute  
to 365 days are available for over a period of one year.  
Some of the common features of your GFC 7001E family of analyzers are:  
Microprocessor controlled for versatility  
Multi-tasking software allows viewing of test variables during operation  
Continuous self checking with alarms  
Bi-directional RS-232 for remote operation  
Digital status outputs indicate instrument operating condition  
Adaptive signal filtering optimizes response time  
Gas Filter Correlation Wheel for CO specific measurement  
GFC Wheel guaranteed against leaks for 5 years  
Temperature & Pressure compensation  
Internal data logging with 1 min to 365 day multiple average  
Remote operation when used with Teledyne APICOM software  
GFC 7001E FEATURES:  
Ranges, 0-1 ppm to 0-1000 ppm, user selectable  
14-meter path length for sensitivity  
GFC 7001EM FEATURES:  
Ranges, 0-1 ppm; Max: 0-5000 ppm, user selectable  
2.5 meter path length for dynamic range  
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Introduction  
Model GFC7001E Carbon Dioxide Analyzer  
Several options can be purchased for the analyzer that allows the user to more easily supply and manipulate  
Zero Air and Span Gas. For more information of these options, see Section 5.6.  
1.2. ADDITIONAL DOCUMENTATION  
Additional documentation for the GFC 7001E/EM CO Analyzer is available from Teledyne’s website at  
http://www.teledyne-ai.com/manuals/.  
APICOM software manual, P/N 03945.  
DAS Manual, P/N 02837.  
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Introduction  
Model GFC7001E Carbon Dioxide Analyzer  
1.2.1. USING THIS MANUAL  
NOTE  
This manual explains the operation and use of both the GFC 7001E and the GFC 7001EM Gas Filter  
Correlation Carbon Monoxide Analyzer.  
For the most part these two instruments are nearly identical in their features and functions.  
The examples and illustrations shown in this manual represent the GFC 7001E. Where a significant  
difference does exist between the different models, each version is shown.  
NOTE  
Throughout this manual, words printed in capital, bold letters, such as SETUP or ENTR represent  
messages as they appear on the analyzer’s display.  
This manual has the following structure:  
TABLE OF CONTENTS:  
Outlines the contents of the manual in the order the information are presented. This is a good overview of the  
topics covered in the manual. There is also a list of appendices, figures and tables.  
PART I – GENERAL INFORMATION  
INTRODUCTION  
A brief description of the GFC 7001E/EM Analyzer architecture as well as a description of the layout of  
the manual and what information is located in its various sections.  
SPECIFICATIONS AND WARRANTY  
Lists the performance specifications of the analyzers . If applicable, a description of the conditions and  
configuration under which EPA equivalency was approved as well as the Teledyne’s warranty statement.  
GETTING STARTED  
This section provides instructions for setting up, installing and running your analyzer for the first time.  
GLOSSARY  
Answers to the most frequently asked questions about operating the analyzer and a glossary of acronyms  
and technical terms.  
OPTIONAL HARDWARE & SOFTWARE  
The section describes the optional equipment and their functions for your analyzer.  
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Introduction  
Model GFC7001E Carbon Dioxide Analyzer  
PART II – OPERATING INSTRUCTIONS  
BASIC OPERATION OF THE GFC 7001E/EM ANALYZER  
Step-by-Step instructions for using the display/keyboard to set up and operate the GFC 7001E/EM  
Analyzer.  
ADVANCED FEATURES OF THE GFC 7001E/EM ANALYZER  
Step-by-Step instructions for using the GFC 7001E/EM Analyzer’s more advanced features such as the  
iDAS system, the DIAG and VARS menus and the and the TEST channel analog output.  
REMOTE OPERATION OF THE GFC 7001E/EM Analyzer  
Information and instructions for interacting with the GFC 7001E/EM Analyzer via its several remote  
interface options (e.g. via RS-232, Ethernet, its built in digital control inputs/outputs, etc.)  
GFC 7001E/EM VALIDATION AND VERIFICATION  
Methods and procedures for verifying the correct operation of your GFC 7001E/EM Analyzer as well as  
step by step instructions for calibrating it.  
EPA PROTOCOL CALIBRATION  
Specific information regarding calibration requirements for analyzers used in EPA monitoring.  
PART III – TECHNICAL INFORMATION  
THEORY OF OPERATION  
An in-depth look at the various principals by which the analyzer operates as well as a description of how  
the various electronic, mechanical and pneumatic components of the analyzer work and interact with  
each other. A close reading of this section is invaluable for understanding the analyzer’s operation.  
MAINTENANCE SCHEDULE AND PROCEDURES  
Description of preventative maintenance procedures that should be regularly performed on the analyzer  
to assure good operating condition.  
GENERAL TROUBLESHOOTING & REPAIR OF THE GFC 7001E/EM ANALYZER  
This section includes pointers and instructions for diagnosing problems with the analyzer in general and  
the Terminus as well as instructions on performing repairs of on the Terminus.  
A PRIMER ON ELECTRO-STATIC DISCHARGE  
This section describes how static electricity occurs; why it is a significant concern and; how to avoid it and  
avoid allowing ESD to affect the reliable and accurate operation of your analyzer.  
APPENDICES  
For easier access and better updating, some information has been separated out of the manual and placed in a  
series of appendices at the end of this manual. These include version-specific software menu trees, warning  
messages, definitions Modbus registers and serial I/O variables as well as spare part listings, repair  
questionnaires, interconnect drawing, detailed pneumatic and electronic schematics.  
NOTE  
The 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 the instrument.  
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Specifications  
Model GFC7001E Carbon Dioxide Analyzer  
2. SPECIFICATIONS AND APPROVALS  
2.1. SPECIFICATIONS  
Table 2-1: M 300E/300EM Basic Unit Specifications  
Ranges  
GFC 7001E: Min: 0-1 ppm; Max: 0-1000 ppm of Full Scale (User selectable)  
GFC 7001EM: Min: 0-5 ppm; Max: 0-5000 ppm of Full Scale (User selectable)  
Measurement Units  
GFC 7001E: ppb, ppm, µg/m3, mg/m3 (user selectable)  
GFC 7001EM: ppm, mg/m3 (user selectable)  
Zero Noise  
Span Noise  
GFC 7001E: < 0.02 ppm RMS1;  
GFC 7001E:<0.5% of rdg RMS over 5ppm1, 3  
over 20ppm  
GFC 7001EM: ≤ 0.1 ppm RMS  
;
GFC 7001EM:>0.5% of rdg RMS  
Lower Detectable Limit1  
Zero Drift (24 hours) 2  
Zero Drift (7 days) 2  
Span Drift (24 hour2s)  
Span Drift (7 days) 2  
Linearity  
GFC 7001E: < 0.04 ppm; GFC 7001EM: 0.2 ppm  
GFC 7001E: < 0.1 ppm; GFC 7001EM: <0.5 ppm  
GFC 7001E: < 0.2 ppm; GFC 7001EM: <1.0ppm  
The greater of < 0.5% of reading or 0.1ppm (GFC 7001E), 0.5ppm(GFC 7001EM)  
The greater of < 1% of reading or 0.5ppm (GFC 7001E), 1 ppm(GFC 7001EM)  
GFC 7001E: Better than 1% Full Scale5;  
GFC 7001EM: 0 - 3000 ppm: 1% full scale; 3000 - 5000 ppm: 2% full scale  
Precision  
GFC 7001E: The greater of 0.5% of reading or 0.2ppm;  
GFC 7001EM: The greater of 1.0% of reading or 1ppm  
Lag Time 1  
10 sec1  
Rise/Fall Time 1  
<60 sec to 95%1  
Sample Flow Rate  
800 cm3/min. ±10%  
O2 Sensor option adds 120 cm³/min to total flow though when installed  
Temperature Range  
Humidity Range  
Temp Coefficient  
Voltage Coefficient  
Dimensions (HxWxD)  
Weight  
5 - 40C operating, 10 - 40C EPA Equivalency (GFC 7001E only)  
0-95% RH, Non-Condensing  
< 0.05 % per C (minimum 50 ppb/C)  
< 0.05 % per V  
7" x 17" x 23.5" (178 mm x 432 mm x 597 mm)  
50 lb (22.7 kg)  
AC Power  
100V 50/60 Hz (3.25A), 115 V 60 Hz (3.0A),  
220 – 240 V 50/60 Hz (2.5A)  
Environmental Conditions  
Analog Outputs  
Installation Category (Over voltage Category) II Pollution Degree 2  
4 user configurable outputs  
Analog Output Ranges  
All Outputs: 0.1V, 1V, 5V or 10V  
Three outputs convertible to 4-20 mA isolated current loop.  
All Ranges with 5% under/over-range  
Analog Output Resolution  
Status Outputs  
Control Inputs  
1 part in 4096 of selected full-scale voltage  
8 Status outputs from opto-isolators  
6 Control Inputs, 2 defined, 4 spare  
Serial I/O  
One (1) RS-232/optional multidrop; One (1) RS-232/optional RS-485 (2 connecters in  
parallel)  
Baud Rate : 300 - 115200  
Alarm outputs (optional)  
Certifications  
2 opto-isolated alarm outputs and 2 dry contact alarm outputs  
USEPA: Reference Method Number EQOA-0992-087  
CE: EN61010-1:90 + A1:92 + A2:95, EN61326 - Class A  
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Specifications  
Model GFC7001E Carbon Dioxide Analyzer  
1 As defined by the USEPA  
2 At constant temperature and pressure  
2.2. EPA EQUIVALENCY DESIGNATION  
Teledyne’s GFC 7001E Carbon Monoxide Analyzer is designated as Reference Method Number EQOA-0992-  
087 as defined in 40 CFR Part 53, when operated under the following conditions:  
Range: Any range from 10 ppm to 50 ppm.  
Ambient temperature range of 10 to 40C.  
Line voltage range of 90 – 127 and 200 – 230 VAC, 50/60 Hz.  
Sample filter: Equipped with PTFE filter element in the internal filter assembly.  
Sample flow of 800 80 cm3/min at sea level.  
Internal sample pump.  
Software settings:  
Dilution factor  
AutoCal  
1.0  
ON or OFF  
ON or OFF  
OFF  
Dynamic Zero  
Dynamic Span  
Dual range  
ON or OFF  
ON or OFF  
ON  
Auto range  
Temp/Pres compensation  
Under the designation, the analyzer may be operated with or without the following options:  
Rack mount with slides.  
Rack mount without slides, ears only.  
Zero/span valve options.  
Option 50A – Sample/Cal valves, or;  
Option 50B – Sample/Cal valves with span shutoff & flow control.  
Internal zero/span (IZS) option with either:  
Option 51A – Sample/Cal valves, or;  
Option 51C – Sample/Cal valves with span shutoff & flow control.  
Status outputs.  
Control inputs.  
RS-232 output.  
Ethernet output.  
4-20mA, isolated output.  
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Specifications  
Model GFC7001E Carbon Dioxide Analyzer  
2.3. TUV DESIGNATION  
On behalf of Teledyne TÜV Rheinland Immissionsschutz und Energiesysteme GmbH has performed the  
suitability test of the measuring system GFC 7001E for the component carbon monoxide.  
The suitability test was carried out in compliance with the following guidelines and requirements:  
EN 14626 Ambient Air Quality – Standard method for the measurement of the concentration of carbon  
monoxide by nondispersive infrared spectroscopy, March 2005.  
The measuring system GFC 7001E operates using the non-dispersive infrared spectroscopy.  
The investigations have been carried out in the laboratory and during a field test, lasting three months. The  
tested measuring ranges are:  
Component  
Carbon Monoxide  
Measuring Range  
mg/m3  
EN 14626  
CO  
100  
NOTE: 0-100 ppm correlates to 0-100 µmol/mol or 0-116 mg/m3 (at 293 K and 1013  
mbar).  
The minimum requirements have been fulfilled in the suitability test.  
Therefore the TÜV Immissionsschutz and Energiesysteme GmbH proposes the publication as a suitability-tested  
measuring system for continuous monitoring of carbon monoxide in the ambient air.  
2.4. CE MARK COMPLIANCE  
2.4.1. EMISSIONS COMPLIANCE  
Teledyne’s GFC 7001E/EM 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) & AS/NZS 3548 (w/A1 & A2; 97) Class A.  
Tested on 11-29-2001 at CKC Laboratories, Inc., Report Number CE01-249.  
2.4.2. SAFETY COMPLIANCE  
Teledyne’s GFC 7001E/EM Gas Filter Correlation CO Analyzer was tested and found to be fully compliant with:  
IEC 61010-1:90 + A1:92 + A2:95,  
Tested on 02-06-2002 at NEMKO, Report Number 2002-012219.  
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Specifications  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
3. GETTING STARTED  
3.1. GFC 7001E/EM ANALYZER LAYOUT  
Figure 3-1:  
Front Panel Layout  
Table 3-1: Front Panel Nomenclature  
Name  
Significance  
Mode Field  
Displays the name of the analyzer’s current operating mode.  
Displays a variety of informational messages such as warning messages, operational data, test function  
values and response messages during interactive tasks.  
Message Field  
Concentration  
Field  
Displays the actual concentration of the sample gas currently being measured by the analyzer in the  
currently selected units of measure.  
Keypad  
Definition Field  
Displays dynamic, context sensitive definitions for the row of keys just below the display.  
STATUS LED’s  
Name  
Color  
State  
Definition  
Off  
Unit is not operating in sample mode, iDAS is disabled.  
On  
Sample Mode active; Front Panel Display being updated; iDAS data being stored.  
SAMPLE Green  
Blinking  
Unit is operating in sample mode, front panel display being updated, iDAS hold-off mode  
is ON, iDAS disabled  
Off  
Auto Cal disabled  
CAL  
Yellow  
Red  
On  
Auto Cal enabled  
Blinking  
Unit is in calibration mode  
Off  
Blinking  
No warnings exist  
Warnings exist  
FAULT  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
Figure 3-2:  
Rear Panel Layout  
Table 3-2: Inlet / Outlet Connector Nomenclature  
REAR PANEL LABEL  
FUNCTION  
Connect a gas line from the source of sample gas here.  
SAMPLE  
Calibration gases are also inlet here on units without zero/span/shutoff valve options  
installed.  
Connect an exhaust gas line of not more than 10 meters long here that leads outside  
the shelter or immediate area surrounding the instrument.  
EXHAUST  
On units with zero/span/shutoff valve options installed, connect a gas line to the source  
of calibrated span gas here.  
Pressure Span  
Span gas vent outlet for units with zero/span/shutoff valve options installed.  
Vent/Span  
IZS  
Connect an exhaust gas line of not more than 10 meters long here that leads outside  
the shelter or immediate area surrounding the instrument.  
Internal Zero Air: On units with zero/span/shutoff valve options installed but no internal  
zero air scrubber attach a gas line to the source of zero air here.  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
Figure 3-3:  
Internal Layout – GFC 7001E  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
Figure 3-4:  
Internal Layout – GFC 7001EM with CO2 and O2 Sensor Option  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
Sample Gas Outlet  
fitting  
Sample Gas Flow  
Sensor  
Sample Chamber  
Sync/Demod PCA  
Housing  
Pressure Sensor(s)  
Bench  
Temperature  
Thermistor  
Shock Absorbing  
Mounting Bracket  
Opto-Pickup  
PCA  
Purge Gas  
Pressure Regulator  
IR Source  
GFC Wheel  
Heat Sync  
GFC Wheel Motor  
GFC Temperature  
Sensor  
Purge Gas  
Inlet  
GFC Heater  
Figure 3-5:  
Optical Bench Layout  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
Figure 3-6:  
GFC 7001E/EM Internal Gas Flow (Basic Configuration)  
NOTE  
For pneumatic diagrams of GFC 7001E/EM Analyzer with various calibration valve options, see Section  
5.6.  
3.2. UNPACKING THE GFC 7001E/EM ANALYZER  
CAUTION  
GENERAL SAFETY HAZARD  
To avoid personal injury, always use two persons to lift and carry the GFC 7001E/EM.  
CAUTION  
ELECTRICAL SHOCK HAZARD  
Never disconnect PCAs, wiring harnesses or electronic subassemblies while under  
power.  
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 warranty.  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
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 serivce. See Warranty section in this manual and shipping  
procedures on our Website at http://www.teledyne-api.com under Customer Support > Return Authorization.  
1. Verify that there is no apparent external shipping damage. If damage has occurred, please advise the  
shipper first, then Teledyne API.  
2. Included with your analyzer is a printed record (Final Test and Validation Data Sheet: GFC 7001E PN  
04307; GFC 7001EM PN 04311) of the final performance characterization performed on your  
instrument at the factory. This record 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 by:  
Removing the setscrew located in the top, center of the Front panel;  
Removing the two flat head, Phillips screws on the sides of the instrument (one per side towards the  
rear);  
Sliding the cover backwards until it clears the analyzer’s front bezel, and;  
Lifting the cover straight up.  
4. Inspect the interior of the instrument to make 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.  
3.2.1. VENTILATION CLEARANCE  
Whether the analyzer is set up on a bench or installed into an instrument rack, be sure to leave sufficient  
ventilation clearance.  
Table 3-3: Ventilation Clearance  
AREA  
Back of the instrument  
MINIMUM REQUIRED CLEARANCE  
4 in.  
1 in.  
1 in.  
Sides of the instrument  
Above and below the instrument  
Various rack mount kits are available for this analyzer. See Section 5.2 of this manual for more information.  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
3.3. ELECTRICAL CONNECTIONS  
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, Ethernet/LAN, USB, RS-232,  
and RS-485.  
3.3.1. POWER CONNECTION  
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.  
CAUTION  
ELECTRICAL SHOCK HAZARD  
High Voltages are present inside the analyzer’s case.  
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  
GENERAL SAFETY HAZARD  
The GFC 7001E/EM Analyzer can be configured for both  
100-130 V and 210-240 V at either 47 Hz or 63 Hz.  
To avoid damage to your analyzer, make sure that the AC power voltage matches  
the voltage indicated on the analyzer’s serial number label tag (See Figure 3-2)  
before plugging the GFC 7001E/EM into line power.  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
3.3.2. ANALOG OUTPUT CONNECTIONS  
The GFC 7001E 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 datalogger.  
Output A3 is only used on the GFC 7001E/EM if the optional CO2 or O2 sensor is installed.  
Channel A4 is special. It can be set by the user (see Section 7.4.6) to output any one of the parameters  
accessible through the <TST TST> keys of the units sample 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 OUT  
A1  
A2  
A3  
A4  
+
-
+
-
+
-
+
-
Figure 3-7:  
Analog Output Connector  
Table 3-4: Analog Output Pin-Outs  
PIN  
1
ANALOG OUTPUT  
VOLTAGE SIGNAL  
V Out  
CURRENT SIGNAL  
I Out +  
A1  
A2  
2
Ground  
I Out -  
3
V Out  
I Out +  
4
Ground  
I Out -  
5
A3  
V Out  
I Out +  
(Only used if CO2 or  
O2 Sensor is  
installed)  
6
Ground  
I Out -  
7
8
V Out  
I Out +  
I Out -  
A4  
Ground  
3.3.3. CONNECTING THE STATUS OUTPUTS  
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 (PLCs). 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 for 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.  
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Getting Started  
Model GFC7001E Carbon Dioxide Analyzer  
The status outputs are accessed via a 12-pin connector on the analyzer’s rear panel labeled STATUS (see  
Figure 3-2). Pin-outs for this connector are:  
STATUS  
1
2
3
4
5
6
7
8
D
+
Figure 3-8:  
Status Output Connector  
Table 3-5: Status Output Signals  
REAR PANEL  
LABEL  
STATUS  
DEFINITION  
CONDITION  
1
SYSTEM OK  
ON if no faults are present.  
OFF any time the HOLD OFF feature is active, such as during calibration or when  
other faults exist possibly invalidating the current concentration measurement  
(example: sample flow rate is outside of acceptable limits).  
2
CONC VALID  
ON if concentration measurement is valid.  
3
4
5
6
HIGH RANGE  
ZERO CAL  
ON if unit is in high range of either the DUAL or AUTO range modes.  
ON whenever the instrument’s ZERO point is being calibrated.  
ON whenever the instrument’s SPAN point is being calibrated.  
ON whenever the instrument is in DIAGNOSTIC mode.  
SPAN CAL  
DIAG MODE  
If this analyzer is equipped with an optional CO2 sensor, this Output is ON when that  
sensor is in calibration mode.  
7
CO2 CAL  
O2 CAL  
Otherwise this output is unused.  
If this analyzer is equipped with an optional O2 sensor, this Output is ON when that  
sensor is in calibration mode.  
8
Otherwise this output is unused.  
D
EMITTER BUS  
SPARE  
The emitters of the transistors on pins 1-8 are bussed together.  
+
DC POWER  
+ 5 VDC, 300 mA source (combined rating with Control Output, if used).  
The ground level from the analyzer’s internal DC power supplies.  
Digital Ground  
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3.3.4. 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 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
F
U
+
A
B
C
D
E
F
U
+
5 VDC Power  
Supply  
+
-
External Power Connections  
Local Power Connections  
Figure 3-9:  
Control Input Connector  
Table 3-6: Control Input Signals  
INPUT #  
STATUS DEFINITION  
ON CONDITION  
The analyzer is placed in Zero Calibration mode. The mode field of the  
display will read ZERO CAL R.  
A
REMOTE ZERO CAL  
The analyzer is placed in span calibration mode as part of performing a low  
B
C
REMOTE SPAN CAL  
span (midpoint) calibration. The mode field of the display will read LO CAL  
R.  
The analyzer is forced into high range for zero or span calibrations. This  
only applies when the range mode is either DUAL or AUTO. The mode field  
of the display will read HI CAL R.  
REMOTE CAL HIGH  
RANGE  
D, E  
& F  
SPARE  
The ground level from the analyzer’s internal DC power supplies (same as  
chassis ground).  
Digital Ground  
U
+
External Power input  
Input pin for +5 VDC required to activate pins A – F.  
Internally generated 5V DC power. To activate inputs A – F, place a jumper  
between this pin and the “U” pin. The maximum amperage through this port  
is 300 mA (combined with the analog output supply, if used).  
5 VDC output  
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3.3.5. CONNECTING THE SERIAL PORTS  
If you wish to utilize either of the analyzer’s two serial interface COMM ports, refer to Section 8 for instructions on  
their configuration and usage.  
3.3.6. CONNECTING TO A LAN OR THE INTERNET  
If your unit has a Teledyne’s Ethernet card, plug one end into the 7’ CAT5 cable supplied with the option into the  
appropriate place on the back of the analyzer and the other end into any nearby Ethernet access port.  
NOTE  
The GFC 7001E/EM firmware supports dynamic IP addressing or DHCP.  
If your network also supports DHCP, the analyzer will automatically configure its LAN connection  
appropriately (see Section 8.4.2).  
If your network does not support DHCP, see Section 8.4.3 for instructions on manually configuring the  
LAN connection.  
3.3.7. CONNECTING TO A MULTIDROP NETWORK  
If your unit has a Teledyne’s RS-232 multidrop card, see Section 8.2 for instructions on setting it up.  
3.4. PNEUMATIC CONNECTIONS  
CAUTION  
GENERAL SAFETY HAZARD  
CARBON MONOXIDE (CO) IS A TOXIC GAS.  
Obtain a Material Safety Data Sheet (MSDS) for this material. Read and rigorously  
follow the safety guidelines described there.  
Do not vent calibration gas and sample gas into enclosed areas.  
3.4.1. CALIBRATION GASES  
3.4.1.1. Zero Air  
Zero air is a gas that is similar in chemical composition to the earth’s atmosphere but scrubbed of all  
components that might affect the analyzers readings, in this case CO and water vapor. If your analyzer is  
equipped with an IZS or External Zero Air scrubber option, it is capable of creating zero air.  
If the analyzer is NOT equipped with the optional CO2 sensor, zero air should be scrubbed of CO2 as well  
as this gas can also have an interfering effect on CO measurements.  
For analyzers without an IZS or external zero air scrubber option, a zero air generator such as the  
Teledyne’s M701 can be used.  
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3.4.1.2. Span Gas  
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 CO measurements made  
with the GFC 7001E/EM Analyzer, it is recommended that you use a span gas with a CO concentration  
equal to 80-90% of the measurement range for your application.  
EXAMPLE: If the application is to measure between 0 ppm and 500 ppb, an appropriate span gas  
concentration would be 400-450 ppb CO in N2.  
Some applications, such as EPA monitoring, require a multipoint calibration procedure where span gases  
of different concentrations are needed. We recommend using a bottle of calibrated CO gas of higher  
concentration in conjunction with a gas dilution calibrator such as a Teledyne’s M700. This type of  
calibrator precisely mixes a high concentration gas with zero air (both supplied externally) to accurately  
produce span gas of the correct concentration. Linearity profiles can be automated with this model and  
run unattended over night.  
Cylinders of calibrated CO gas traceable to NIST-Standard Reference Material specifications (also  
referred to as SRMs or EPA protocol calibration gases) are commercially available. Table 3-7 lists specific  
NIST-SRM reference numbers for various concentrations of CO.  
Table 3-7: NIST-SRM's Available for Traceability of CO Calibration Gases  
NOMINAL  
NIST-SRM  
TYPE  
CONCENTRATION  
1680b  
1681b  
2613a  
2614a  
2659a1  
2626a  
2745*  
CO in N2  
CO in N2  
500 ppm  
1000 ppm  
CO in Zero Air  
CO in Zero Air  
O2 in N2  
20 ppm  
45 ppm  
21% by weight  
4% by weight  
16% by weight  
CO2 in N2  
CO2 in N2  
1 Used to calibrate optional O2 sensor.  
2 Used to calibrate optional CO2 sensor.  
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3.4.2. PNEUMATIC CONNECTIONS TO GFC 7001E/EM BASIC  
CONFIGURATION  
NOTE  
In order to prevent dust from getting into the gas flow channels of your analyzer, it was shipped with  
small plugs inserted into each of the pneumatic fittings on the back panel.  
Make sure that all of these dust plugs are removed before attaching  
exhaust and supply gas lines.  
See Figure 3-2 and Table 3-2 for the location and descriptions of the various pneumatic inlets/outlets referred to  
in this section.  
See Section 5.6 for information regarding the pneumatic setup of GFC 7001E/EM Analyzers with various optional  
calibration valve options in stalled  
CAUTION  
GENERAL SAFETY HAZARD  
Sample and calibration gases should only come into contact with PTFE (Teflon), FEP,  
glass, stainless steel or brass.  
The exhaust from the analyzer’s internal pump MUST be vented outside the immediate  
area or shelter surrounding the instrument.  
It is important to conform to all safety requirements regarding exposure to CO.  
Figure 3-10:  
Pneumatic Connections–Basic Configuration–Using Bottled Span Gas  
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Figure 3-11:  
Pneumatic Connections–Basic Configuration–Using Gas Dilution Calibrator  
3.4.2.1. Sample Gas Source  
Attach a sample inlet line to the SAMPLE inlet port. The sample input line should not be more than 2 meters  
long.  
Maximum pressure of any gas at the sample inlet should not exceed 1.5 in-hg above ambient pressure  
and ideally should equal ambient atmospheric pressure.  
In applications where the sample gas is received from a pressurized manifold, a vent must be placed on  
the sample gas before it enters the analyzer.  
3.4.2.2. Calibration Gas Sources  
The source of calibration gas is also attached to the SAMPLE inlet, but only when a calibration operation is  
actually being performed.  
NOTE  
Zero air and span gas inlets should supply their respective gases in excess of the 800 cc3/min demand  
of the analyzer.  
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3.4.2.3. Input Gas Venting  
The span gas, zero air supply and sample gas line MUST be vented in order to ensure that the gases input do  
not exceed the maximum inlet pressure of the analyzer as well as to prevent back diffusion and pressure effects.  
These vents should be:  
At least 0.2m long;  
No more than 2m long and;  
Vented outside the shelter or immediate area surrounding the instrument.  
3.4.2.4. Exhaust Outlet  
Attach an exhaust line to the analyzer’s EXHAUST outlet fitting. The exhaust line should be:  
PTEF tubing; minimum O.D ¼”;  
A maximum of 10 meters long;  
Vented outside the GFC 7001E/EM Analyzer’s enclosure.  
NOTE  
Once the appropriate pneumatic connections have been made, check all pneumatic fittings for leaks  
using the procedures defined in Section 12.3.3.  
NOTE  
For information on attaching gas lines to GFC 7001E/EM Analyzers with various calibration valve  
options,  
see Section 5.6.  
3.5. INITIAL OPERATION  
NOTE  
The analyzer’s cover must be installed to ensure that the temperatures of the GFC Wheel and absorption  
cell assemblies are properly controlled.  
If you are unfamiliar with the GFC 7001E/EM theory of operation, we recommend that you read Section Error!  
Reference source not found.. For information on navigating the analyzer’s software menus, see the menu  
trees described in Appendix A.1.  
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3.5.1. STARTUP  
After the electrical and pneumatic connections are made, turn on the instrument. The pump and exhaust fan  
should start immediately. The display should immediately display a single, horizontal dash in the upper left  
corner of the display. This will last approximately 30 seconds while the CPU loads the operating system.  
Once the CPU has completed this activity it will begin loading the analyzer firmware and configuration data.  
During this process, astring of messages will appear on the analyzer’s front panel display.  
System waits 3 seconds then  
automatically begins its  
initialization routine.  
.
System is checking the validity and  
functionality of the Terminus  
memory and firmware.  
If at this point,  
appears, contact Teledyne  
Instruments customer service.  
The instrument is loading  
configuration and calibration data  
from the flash chip.  
The instrument is loading the  
system firmware.  
The startup process may hesitate at this point if:  
· The Ethernet option is installed;  
· DHCP mode is turned on and;  
· The instrument is not connected to a  
functioning network.  
The analyzer should automatically switch to Sample Mode after completing the boot-up sequence and start  
monitoring CO gas.  
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3.5.2. WARM UP  
The GFC 7001E/EM requires about 60 minutes warm-up time before reliable CO measurements can be taken.  
During that time, various portions of the instrument’s front panel will behave as shown in Table 3-8. See Figure  
3-1 for the layout.  
Table 3-8: Front Panel Display during System Warm-Up  
NAME  
COLOR  
BEHAVIOR  
SIGNIFICANCE  
Displays current,  
compensated CO  
Concentration  
Concentration  
Field  
N/A  
This is normal operation.  
Displays blinking  
“SAMPLE”  
Instrument is in sample mode but is still in the process of  
warming up. (iDAS holdoff period is active)  
Mode Field  
N/A  
STATUS LED’s  
Unit is operating in sample mode; front panel display is being  
updated.  
Sample  
Cal  
Green  
Yellow  
Red  
On  
Flashes On/Off when adaptive filter is active  
Off  
The instrument’s calibration is not enabled.  
The analyzer is warming up and hence out of specification  
for a fault-free reading. Various warning messages will  
appear.  
Fault  
Blinking  
3.5.3. WARNING MESSAGES  
Because internal temperatures and other conditions may be outside the 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 60 minutes warm-up period is over, investigate their cause using the troubleshooting  
guidelines in Section Error! Reference source not found..  
To view and clear warning messages, press:  
Table 3-6 lists brief descriptions of the warning messages that may occur during start up.  
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Table 3-9: Possible Warning Messages at Start-Up  
Message  
MEANING  
ANALOG CAL WARNING  
BENCH TEMP WARNING  
The instrument's A/D circuitry or one of its analog outputs is not calibrated.  
Optical bench temperature is outside the specified limits.  
The temperature inside the GFC 7001E/EM chassis is outside the specified  
limits.  
BOX TEMP WARNING  
CANNOT DYN SPAN2  
CANNOT DYN ZERO3  
Remote span calibration failed while the dynamic span feature was set to  
turned on.  
Remote zero calibration failed while the dynamic zero feature was set to turned  
on.  
CONFIG INITIALIZED  
DATA INITIALIZED  
Configuration was reset to factory defaults or was erased.  
iDAS data storage was erased.  
FRONT PANEL WARN  
CPU is unable to communicate with the front panel.  
Photometer temperature outside of warning limits specified by  
PHOTO_TEMP_SET variable.  
PHOTO TEMP WARNING  
REAR BOARD NOT DET  
RELAY BOARD WARN  
SAMPLE FLOW WARN  
SAMPLE PRESS WARN  
SAMPLE TEMP WARN  
SOURCE WARNING  
Motherboard was not detected during power up.  
CPU is unable to communicate with the relay PCA.  
The flow rate of the sample gas is outside the specified limits.  
Sample pressure outside of operational parameters.  
The temperature of the sample gas is outside the specified limits.  
The IR source may be faulty.  
SYSTEM RESET1  
The computer was rebooted.  
WHEEL TEMP WARNING  
The Gas Filter Correlation Wheel temperature is outside the specified limits.  
1
2
3
Clears 45 minutes after power up.  
Clears the next time successful zero calibration is performed.  
Clears the next time successful span calibration is performed.  
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3.5.4. FUNCTIONAL CHECK  
After the analyzer’s components have warmed up for at least 60 minutes, verify that the software properly  
supports any hardware options that were installed.  
For information on navigating through the analyzer’s software menus, see the menu trees described in  
Appendix A.1.  
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 (see  
Section 13.1.2).  
The enclosed Final Test and Validation Data Sheet (P/N 04307) lists these values before the  
instrument left the factory.  
To view the current values of these parameters press the following key sequence on the analyzer’s front  
panel. Remember that until the unit has completed its warm-up these parameters may not have stabilized.  
If your analyzer has an Ethernet card installed and your network is running a Dynamic Host Configuration  
Protocol (DHCP) software package, the Ethernet option will automatically configure its interface with your LAN.  
However, it is a good idea to check these settings to make sure that the DHCP has successfully  
downloaded the appropriate network settings from your network server (See Section 8.4.2).  
If your network is not running DHCP, you will have to configure the analyzer’s interface manually (See  
Section 8.4.3).  
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3.6. INITIAL CALIBRATION OF THE GFC 7001E/EM  
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 3.4 for instructions for connecting these gas sources.  
The initial calibration should be carried out using the same reporting range set up as used during the analyzer’s  
factory calibration. This will allow you to compare your calibration results to the factory calibration as listed on  
the Final Test and Validation Data Sheet.  
If both available iDAS parameters for a specific gas type are being reported via the instruments analog outputs  
e.g. CONC1 and CONC2 when the DUAL range mode is activated, separate calibrations should be carried out  
for each parameter.  
Use the LOW button when calibrating for CONC1 (equivalent to RANGE1).  
Use the HIGH button when calibrating for CONC2 (equivalent to RANGE2).  
See Manual Addendum, P/N 06270 for more information on the configurable analog output reporting ranges.  
NOTE  
The following procedure assumes that the instrument does not have any of the available Valve Options  
installed.  
See Section 9.3 for instructions for calibrating instruments possessing valve options.  
3.6.1. INTERFERENTS FOR CO2 MEASUREMENTS  
It should be noted that the gas filter correlation method for detecting CO is subject to interference from a number  
of other gases that absorb IR in a similar fashion to CO. Most notable of these are water vapor, CO2, N2O  
(nitrous oxide) and CH4 (methane). The GFC 7001E/EM has been successfully tested for its ability to reject  
interference from of these sources, however high concentrations of these gases can interfere with the  
instrument’s ability to make low-level CO measurements.  
For a more detailed discussion of this topic, see Section 11.2.1.3.  
3.6.2. INITIAL CALIBRATION PROCEDURE FOR GFC 7001E/EM  
ANALYZERS WITHOUT OPTIONS  
The following procedure assumes that:  
The instrument DOES NOT have any of the available calibration valve or gas inlet options installed;  
Cal gas will be supplied through the SAMPLE gas inlet on the back of the analyzer (see Figure 3-2), and;  
The pneumatic setup matches that described in Section 3.4.2.  
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3.6.2.1. Verifying the GFC 7001E/EM Reporting Range Settings  
While it is possible to perform the following procedure with any range setting we recommend that you perform  
this initial checkout using following reporting range settings:  
Unit of Measure: PPM  
Analog Output Reporting Range: 50 ppm  
Mode Setting: SNGL  
While these are the default setting for the GFC 7001E/EM Analyzer, it is recommended that you verify them  
before proceeding with the calibration procedure, by pressing:  
SAMPLE  
RANGE=50.0 PPM  
CO= XX.XX  
SETUP  
<TST TST> CAL  
SETUP X.X  
PRIMARY SETUP MENU  
CFG DAS RNGE PASS CLK MORE  
EXIT  
EXIT  
SETUP X.X  
RANGE CONTROL MENU  
MODE SET UNIT DIL  
Verify that the MODE  
SETUP X.X  
RANGE MODE:SINGL  
is set for SNGL.  
SNGL DUAL AUTO  
ENTR EXIT  
If it is not, press  
SINGL ENTR.  
SETUP X.X  
RANGE CONTROL MENU  
MODE SET UNIT DIL  
EXIT  
Verify that the RANGE is  
set for 50.0  
SETUP X.X RANGE: 50.0 Conc  
If it is not, toggle each  
numeric key until the  
proper range is set, then  
press ENTR.  
0
0
0
5
0
.0 ENTR EXIT  
Press EXIT  
3x’s to return  
the M200E to  
the SAMPLE  
mode.  
SETUP X.X  
RANGE CONTROL MENU  
MODE SET UNIT DIL  
EXIT  
Verify that the UNITs  
SETUP X.X  
CONC UNITS:PPM  
is set for PPM  
PPB PPM UGM MGM  
ENTR EXIT  
If it is not, press  
PPM ENTR.  
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3.6.2.2. Dilution Ratio Set Up  
If the dilution ration option is enabled on your GFC 7001E/EM Analyzer and your application involves diluting the  
sample gas before it enters the analyzer, set the dilution ration as follows:  
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3.6.2.3. Set CO Span Gas Concentration  
Set the expected CO pan gas concentration. This should be 80-90% of range of concentration range for which  
the analyzer’s analog output range is set.  
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3.6.2.4. Zero/Span Calibration  
To perform the zero/span calibration procedure, press:  
SAMPLE  
RANGE=0.0 PPm  
CAL  
CO= XX.XX  
Set the Display to show  
the STABIL test function.  
This function calculates  
the stability of the CO  
measurement.  
< TST TST >  
SETUP  
Toggle TST> button until ...  
SAMPLE  
STABIL= XXXX PPM  
CO=XX.XX  
SETUP  
< TST TST >  
CAL  
Allow zero gas to enter the sample port  
at the rear of the analyzer.  
Wait until STABIL  
falls below 0.5 ppm.  
This may take several  
minutes.  
SAMPLE  
STABIL= XXXX PPM  
CAL  
CO=XX.XX  
SETUP  
< TST TST >  
Press ENTR to changes  
the OFFSET & SLOPE  
values for the CO  
M-P CAL  
STABIL= XXXX PPM  
CO=XX.XX  
<TST TST> ZERO CONC  
EXIT  
measurements.  
Press EXIT to leave the  
calibration unchanged and  
return to the previous  
menu.  
M-P CAL  
STABIL= XXXX PPM  
CO=XX.XX  
<TST TST> ENTR  
CONC  
EXIT  
Allow span gas to enter the sample port  
at the rear of the analyzer.  
Wait until STABIL  
falls below 0.5 PPM.  
This may take several  
minutes.  
SAMPLE  
STABIL= XXXX PPM  
CAL  
CO=XX.XX  
SETUP  
< TST TST >  
The SPAN key now appears  
during the transition from  
zero to span.  
Press ENTR to changes  
the OFFSET & SLOPE  
values for the CO  
M-P CAL  
STABIL= XXXX PPM  
CO=XX.XX  
EXIT  
You may see both keys.  
If either the ZERO or SPAN  
buttons fail to appear see the  
Troubleshooting section for  
tips.  
<TST TST> ZERO SPAN CONC  
measurements.  
Press EXIT to leave the  
calibration unchanged and  
return to the previous  
menu.  
M-P CAL  
STABIL= XXXX PPM  
CONC  
CO=XX.XX  
EXIT  
<TST TST> ENTR  
M-P CAL  
STABIL= XXXX PPM  
CONC  
CO=XX.XX  
EXIT  
EXIT at this point  
returns to the  
SAMPLE menu.  
<TST TST> ENTR  
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3.6.3. O2 SENSOR CALIBRATION PROCEDURE  
If your GFC 7001E/EM is equipped with the optional O2 sensor, this sensor should be calibrated during  
installation of the instrument. See Section 9.7.1 for instructions.  
3.6.4. CO2 SENSOR CALIBRATION PROCEDURE  
If your GFC 7001E/EM is equipped with the optional CO2 sensor, this sensor should be calibrated during  
installation of the instrument. See Section 9.7.2 for instructions.  
The GFC 7001E/EM Analyzer is now ready for operation  
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 API.  
This information is vital to our efforts in continuously improving our service and our products.  
THANK YOU.  
.
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4. FREQUENTLY ASKED QUESTIONS  
4.1. FAQ’S  
The following is a list from the Teledyne’s Customer Service Department of the most commonly asked questions  
relating to the GFC 7001E/EM CO Analyzer.  
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 an iDAS hold off period of more than 20 minutes).  
Once you adjust the setting in question to an allowable value, the ENTR key will re-appear.  
Q: Why is the ZERO or SPAN key not displayed during calibration?  
A: The GFC 7001E/EM disables certain these keys expected span or zero value entered by the users is too  
different from the gas concentration actually measured value at the time. This is to prevent the accidental  
recalibration of the analyzer to an out-of-range response curve.  
EXAMPLE: The span set point is 40 ppm but gas concentration being measured is only 5 ppm.  
For more information, see Sections 13.3.3 and 13.3.4.  
Q: How do I enter or change the value of my Span Gas?  
A: Press the CONC key found under the CAL or CALS buttons of the main SAMPLE display menus to enter  
the expected CO span concentration.  
See Section 3.6.2.3 or Zero/Span Calibration3.6.2.4 for more information.  
Q: Why does the analyzer not respond to span gas?  
A: Section 13.3.3 has some possible answers to this question.  
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’s Service Department  
for more information on this topic.  
Q: What do I do if the concentration on the instrument's front panel display does not match the value recorded or  
displayed on my data logger even if both instruments are properly calibrated?  
A: This most commonly occurs for one of the following reasons:  
A difference in circuit ground between the analyzer and the data logger or a wiring problem;  
A scale problem with the input to the data logger.  
The analog outputs of the GFC 7001E/EM can be manually adjusted to compensate for either or both of  
these effects, see Section 7.4.5;  
The analog outputs are not calibrated, which can happen after a firmware upgrade.  
Both the electronic scale and offset of the analog outputs can be adjusted (see Section 7.4.3).  
Alternately, use the data logger itself as the metering device during calibrations procedures.  
Q: How do I perform a leak check?  
A: See Section 12.3.3.  
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Q: How do I 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 cm3/min  
10%. See Section 12.3.4.  
Q: How long does the IR source last?  
A: Typical lifetime is about 2-3 years.  
Q: Can I automate the calibration of my analyzer?  
A: Any analyzer with zero/span valve or IZS option can be automatically calibrated using the instrument’s  
AutoCal feature. The setup of this option is located in Section 9.4.  
Q: Can I use the IZS option to calibrate the analyzer?  
A: Yes. However, whereas this may be acceptable for basic calibration checks, the IZS option is not  
permitted as a calibration source in applications following US EPA protocols.  
To achieve highest accuracy, it is recommended to use cylinders of calibrated span gases in combination  
with a zero air source.  
Q: My analyzer has the optional, user-configurable analog output channels. How do I program and use them?  
A: Instructions for this can be found in Appendix E .  
Q: What is the averaging time for an GFC 7001E/EM?  
A: The default averaging time, optimized for ambient pollution monitoring, is 150 seconds for stable  
concentrations and 10 seconds for rapidly changing concentrations; See Section 11.5.12 for more  
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  
Term  
10BaseT  
Description/Definition  
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  
ASSY  
cm3  
Name of a remote control program offered by Teledyne to its customers.  
Assembly.  
metric abbreviation for cubic centimeter. Same as the obsolete abbreviation “cc”.  
Chemical formulas that may be included in this document:  
CO2  
C3H8  
CH4  
H2O  
HC  
carbon dioxide  
propane  
methane  
water vapor  
general abbreviation for hydrocarbon  
nitric acid  
HNO3  
H2S  
NO  
hydrogen sulfide  
nitric oxide  
NO2  
nitrogen dioxide  
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Term  
Description/Definition  
NOX  
nitrogen oxides, here defined as the sum of NO and NO2  
NOy  
nitrogen oxides, often called odd nitrogen. The sum of NO, NO2 (NOX) plus other  
compounds such as HNO3 Definitions vary widely and may include nitrate (NO3), PAN,  
N2O and other compounds.  
NH3  
O2  
ammonia  
molecular oxygen  
ozone  
O3  
SO2  
sulfur dioxide  
DAS  
Data Acquisition System  
DIAG  
DHCP  
Diagnostics, the diagnostic settings of the analyzer.  
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  
DOM  
DOS  
Disk On Module, the analyzer’s central storage area for analyzer firmware,  
configuration settings and data This is a 44-pin IDE flash disk that can hold up to  
128MB.  
Disk Operating System  
DRAM  
Dynamic Random Access Memory  
Digital Research DOS  
DR-DOS  
Ethernet  
a standardized (IEEE 802.3) computer networking technology for local area  
networks (LANs), facilitating communication and sharing resources  
FLASH  
GFC  
flash memory is non-volatile, solid-state memory  
Gas Filter Correlation  
I2C 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  
LED  
Liquid Crystal Display  
Light Emitting Diode  
LPM  
M/R  
Liters Per Minute  
Measure/Reference  
NDIR  
NIST-SRM  
Non-Dispersive Infrared.  
National Institute of Standards and Technology - Standard Reference Material.  
PC  
Printed Circuit Assembly, the PCB with electronic components, ready to use  
PC/AT  
Personal Computer / Advanced Technology.  
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Term  
Description/Definition  
PCB  
Printed Circuit Board, the bare board without electronic component.  
PLC  
PFA  
Programmable Logic Controller, a device that is used to control instruments  
based on a logic level signal coming from the analyzer  
Per-Fluoro-Alkoxy, an inert polymer. One of the polymers that du Pont markets  
as Teflon®  
PLD  
PLL  
Programmable Logic Device  
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)  
PSD  
Part Number  
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  
Rdg  
Reading.  
RS-232  
specification and standard describing a serial communication method between  
two devices, DTE (Data Terminal Equipment) and DCE (Data Circuit-terminating  
Equipment), 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 faster than RS-232 with a much longer  
distance between the host and the furthest device.  
SAROAD  
SLAMS  
SLPM  
Storage and Retrieval of Aerometric Data.  
State and Local Air Monitoring Network Plan.  
Standard Liters Per Minute; 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  
USB  
Thermal Electric Cooler.  
Universal Serial Bus is a standard connection method to establish  
communication between peripheral devices and a host controller, such as a  
mouse and/or keyboard and a personal computer.  
VARS  
Z/S  
Variables, the variable settings of the analyzer.  
Zero / Span.  
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5. OPTIONAL HARDWARE AND SOFTWARE  
This includes a brief description of the hardware and software options available for the GFC 7001E/EM Gas  
Filter Correlation Carbon Monoxide 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: (626) 961-2538  
Web: www.teledyne-ai.com  
5.1. EXTERNAL PUMPS (OPTIONS 10A-10E, 11, 13)  
A variety of optional pumps are available for the GFC 7001E/EM Analyzer. The range of available pump options  
meets all typical AC power supply standards while exhibiting the same pneumatic performance.  
OPTION  
DESCRIPTION  
NUMBER  
10A  
10B  
10C  
10D  
10E  
11  
External Pump 115V @ 60 Hz  
External Pump 220V @ 50 Hz  
External Pump 220V @ 60 Hz  
External Pump 100V @ 50 Hz  
External Pump 100V @ 60 Hz  
Pumpless, external Pump Pack/Rack  
High Voltage Internal Pump 240V/50Hz  
13  
5.2. RACK MOUNT KITS (OPT 20 TO OPT 23)  
There are several options for mounting the analyzer in standard 19” racks. The slides are three-part extensions,  
one mounts to the rack, one mounts to the analyzer chassis and the middle part remains on the rack slide when  
the analyzer is taken out. The analyzer locks into place when fully extended and cannot be pulled out without  
pushing two buttons, one on each side.  
The rack mount brackets for the analyzer require that you have a support structure in your rack to support the  
weight of the analyzer. The brackets cannot carry the full weight of an analyzer and are meant only to fix the  
analyzer to the front of a rack, preventing it from sliding out of the rack accidentally.  
OPTION NUMBER  
DESCRIPTION  
Rack mount brackets with 26 in. chassis slides.  
Rack mount brackets with 24 in. chassis slides.  
Rack mount brackets only.  
20A  
20B  
21  
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.  
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5.3. CARRYING STRAP/HANDLE (OPT 29)  
The chassis of the GFC 7001E/EM Analyzer allows the user to attach a strap handle for carrying the instrument.  
The handle is located on the right side and pulls out to accommodate a hand for transport. When pushed in, the  
handle is nearly flush with the chassis, only protruding out about 9 mm (3/8”).  
Figure 5-1:  
GFC 7001E/EM with Carrying Strap Handle and Rack Mount Brackets  
Installing the strap handle prevents the use of the rack mount slides, although the rack mount brackets, Option  
21, can still be used.  
CAUTION  
GENERAL SAFETY HAZARD  
A fully configured GFC 7001E/EM with valve options weighs about 23 kg (51 pounds).  
To avoid personal injury we recommend two persons lift and carry the analyzer.  
Ensure to disconnect all cables and tubing from the analyzer before carrying it.  
5.4. CURRENT LOOP ANALOG OUTPUTS (OPTION 41)  
The current loop option adds isolated, voltage-to-current conversion circuitry to the analyzer’s analog outputs. It  
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,  
This option may be ordered separately for three of the analog outputs and can be installed as a retrofit.  
Figure 5-2 provides installation instructions and illustrates a sample combination of one current output and two  
voltage outputs configuration. Section 5.4.1 provides instructions for converting current loop analog outputs to  
standard 0-to-5 VDC outputs. Information on calibrating or adjusting these outputs can be found in Section  
7.4.3.5.  
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Figure 5-2:  
Current Loop Option Installed on the Motherboard  
5.4.1. 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 14 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. If a recording device was connected to the output being modified, disconnect it.  
3. Remove the top cover.  
Remove the screw located in the top, center of the front panel.  
Remove the screws on both sides that fasten the top cover to the unit.  
Slide the cover back and lift straight up.  
4. Remove the screw holding the current loop option to the motherboard.  
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5. Disconnect the current loop option PCA from the appropriate connector on the motherboard (see Figure  
5-2).  
6. Each connector, J19 and J23, requires two shunts. Place one shunt on the two left most pins and the  
second shunt on the two pins next to it (see Figure 5-2).  
6 spare shunts (P/N CN0000132) were shipped with the instrument attached to JP1 on the back of  
the instruments keyboard and display PCA.  
7. Reattach the top case to the analyzer.  
8. The analyzer is now ready to have a voltage-sensing, recording device attached to that output.  
9. Calibrate the analog output as described in Section 7.4.3.  
5.5. EXPENDABLES AND SPARES KITS (OPTIONS 42A, 45)  
Expendables Kit, Option 42A: one-year supply of replacement particulate filters (47mm diameter)  
Spares Kit, Option 45: spare parts for one unit  
5.6. CALIBRATION VALVES (OPTIONS 50A, 50B, 50E, 50H)  
The GFC 7001E/EM Gas Filter Correlation Carbon Monoxide Analyzer has a variety of available options  
involving various valves for controlling the flow of calibration gases. From an operational and software  
standpoint, all of the options are the same, only the source of the span and zero gases are different.  
5.6.1. GENERAL INFORMATION RELATED TO ALL VALVE OPTIONS  
5.6.1.1. Gas Flow Rate  
The minimum span gas flow rate required is 800 cm3/min; however, the US EPA recommends that there  
be an excess of flow at least 800 cm3/min of calibration gas.  
Zero air will be supplied at ambient pressure from the local atmosphere.  
5.6.1.2. Valve Control  
The state of the various valves included in these options can be controlled as follows:  
Manually from the analyzer’s front panel by using the SIGNAL I/O controls located under the DIAG Menu  
(see Section 7.3),  
By activating the instrument’s AutoCal feature (see Section 9.4),  
Remotely by using the external digital control inputs (see Section 9.3.3.3), or  
Remotely through the RS-232/485/Ethernet serial I/O ports (see Appendix A-6 for the appropriate  
commands).  
5.6.2. ZERO/SPAN VALVE (OPTION 50A)  
This valve option is intended for applications where:  
Zero air is supplied by a zero air generator like the Teledyne’s M701 and;  
Span gas is supplied by Gas Dilution Calibrator like the Teledyne’s M700E or M702.  
Internal zero/span and sample/cal valves control the flow of gas through the instrument, but because the  
generator and calibrator limit the flow of zero air and span gas, no shutoff valves are required.  
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5.6.2.1. Internal Pneumatics (OPT 50A)  
Figure 5-3:  
Internal Pneumatic Flow OPT 50A – Zero/Span Valves  
Table 5-1: Zero/Span Valve Operating States for Option 52  
MODE  
VALVE  
CONDITION  
Open to SAMPLE inlet  
Open to IZS inlet  
SAMPLE  
(Normal  
State)  
Sample/Cal  
Zero/Span  
Sample/Cal  
Zero/Span  
Open to ZERO/SPAN valve  
Open to IZS inlet  
ZERO CAL  
SPAN CAL  
Sample/Cal  
Zero/Span  
Open to ZERO/SPAN valve  
Open to PRESSURE SPAN inlet  
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5.6.2.2. Pneumatic Set Up (OPT 50A)  
See Figure 3-2 for the location of gas inlets and  
Figure 5-4:  
Pneumatic Connections – Option 50A: Zero/Span Calibration Valves  
SAMPLE GAS SOURCE:  
Attach a sample inlet line to the sample inlet port. The SAMPLE input line should not be more than 2 meters  
long.  
Maximum pressure of any gas at the sample inlet should not exceed 1.5 in-hg above ambient pressure  
and ideally should equal ambient atmospheric pressure.  
In applications where the sample gas is received from a pressurized manifold, a vent must be placed on  
the sample gas before it enters the analyzer.  
CALIBRATION GAS SOURCES:  
A vent is required when an M700 is used with this option. However, if an M700E is used, a vent may or may not  
be required depending on how the M700E output manifold is configured.  
SPAN GAS:  
Attach a gas line from the source of calibration gas (e.g. a Teledyne’s M700E Dynamic Dilution  
Calibrator) to the SPAN inlet at 30 psig.  
ZERO AIR:  
Zero air is supplied via a zero air generator such as a Teledyne’s M701.  
An adjustable valve is installed in the zero air supply line to regulate the gas flow.  
5.6.2.3. Input Gas Venting  
The zero air supply and sample gas line MUST be vented in order to ensure that the gases input do not exceed  
the maximum inlet pressure of the analyzer as well as to prevent back diffusion and pressure effects. These  
vents should be:  
At least 0.2m long;  
No more than 2m long and;  
Vented outside the shelter or immediate area surrounding the instrument.  
5.6.2.4. Exhaust Outlet  
Attach an exhaust line to the analyzer’s EXHAUST outlet fitting. The exhaust line should be:  
PTEF tubing; minimum O.D ¼”;  
A maximum of 10 meters long;  
Vented outside the analyzer’s enclosure.  
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5.6.3. ZERO/SPAN/SHUTOFF VALVE (OPTION 50B)  
This option requires that both zero air and span gas be supplied from external sources.  
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 ensures that the gas pressure of the span gas is reduced to ambient atmospheric  
pressure.  
A SHUTOFF valve preserves the span gas source when it is not in use.  
Zero gas is supplied by either an external scrubber or a zero air generator such as the Teledyne’s M701.  
5.6.3.1. Internal Pneumatics (OPT 50B)  
Figure 5-5:  
Internal Pneumatic Flow OPT 50B – Zero/Span/Shutoff Valves  
Table 5-2: Zero/Span Valve Operating States for Option 50B  
MODE  
VALVE  
CONDITION  
Sample/Cal  
Zero/Span  
Open to SAMPLE inlet  
Open to IZS inlet  
Closed  
SAMPLE  
(Normal  
State)  
Shutoff Valve  
Sample/Cal  
Zero/Span  
Open to ZERO/SPAN valve  
Open to IZS inlet  
Closed  
ZERO CAL  
SPAN CAL  
Shutoff Valve  
Sample/Cal  
Zero/Span  
Open to ZERO/SPAN valve  
Open to SHUTOFF valve  
Shutoff Valve  
Open to PRESSURE SPAN Inlet  
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5.6.3.2. Pneumatic Set Up (OPT 50B)  
See Figure 3-2 for the location of gas inlets and outlets.  
Figure 5-6:  
Pneumatic Connections – Option 50B: Zero/Pressurized Span Calibration Valves  
SAMPLE GAS SOURCE:  
Attach a sample inlet line to the sample inlet port. The SAMPLE input line should not be more than 2 meters  
long.  
Maximum pressure of any gas at the sample inlet should not exceed 1.5 in-hg above ambient pressure  
and ideally should equal ambient atmospheric pressure.  
In applications where the sample gas is received from a pressurized manifold, a vent must be placed on  
the sample gas before it enters the analyzer.  
CALIBRATION GAS SOURCES:  
SPAN GAS:  
Attach a gas line from the pressurized source of calibration gas (e.g. a bottle of NIST-SRM gas) to the  
SPAN inlet at 30 psig.  
ZERO AIR:  
Zero air is supplied via a zero air generator such as a Teledyne’s M701.  
An adjustable valve is installed in the zero air supply line to regulate the gas flow.  
INPUT GAS VENTING:  
The zero air supply and sample gas line MUST be vented in order to ensure that the gases input do not exceed  
the maximum inlet pressure of the analyzer as well as to prevent back diffusion and pressure effects. These  
vents should be:  
At least 0.2m long;  
No more than 2m long and;  
Vented outside the shelter or immediate area surrounding the instrument.  
A similar vent line should be connected to the VENT SPAN outlet on the back of the analyzer.  
EXHAUST OUTLET  
Attach an exhaust line to the analyzer’s EXHAUST outlet fitting. The exhaust line should be:  
PTEF tubing; minimum O.D ¼”;  
A maximum of 10 meters long;  
Vented outside the analyzer’s enclosure.  
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5.6.4. ZERO/SPAN VALVE WITH INTERNAL CO SCRUBBER (OPTION 50H)  
Option 50H is operationally and pneumatically similar to Option 50A above, except that the zero air is generated  
by an internal zero air scrubber. This means that the IZS inlet can simply be left open to ambient air.  
Internal zero/span and sample/cal valves control the flow of gas through the instrument, but because the  
generator and calibrator limit the flow of zero air and span gas no shutoff valves are required.  
5.6.4.1. Internal Pneumatics (OPT 50H)  
Figure 5-7:  
Internal Pneumatic Flow OPT 50H – Zero/Span Valves with Internal Zero Air Scrubber  
Table 5-3: Zero/Span Valve Operating States for Option 50H  
MODE  
VALVE  
CONDITION  
SAMPLE  
(Normal  
State)  
Sample/Cal  
Open to SAMPLE inlet  
Zero/Span  
Open to ZERO AIR scrubber  
Sample/Cal  
Zero/Span  
Sample/Cal  
Zero/Span  
Open to ZERO/SPAN valve  
Open to ZERO AIR scrubber  
Open to ZERO/SPAN valve  
Open to PRESSURE SPAN inlet  
ZERO CAL  
SPAN CAL  
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5.6.4.2. Pneumatic Set Up (OPT 50H)  
See Figure 3-2 for the location of gas inlets and outlets and span gas no shutoff valves are required.  
Figure 5-8:  
Pneumatic Connections – Option 50H: Zero/Span Calibration Valves  
SAMPLE GAS SOURCE:  
Attach a sample inlet line to the sample inlet port. The SAMPLE input line should not be more than 2 meters  
long.  
Maximum pressure of any gas at the sample inlet should not exceed 1.5 in-Hg above ambient pressure  
and ideally should equal ambient atmospheric pressure.  
In applications where the sample gas is received from a pressurized manifold, a vent must be placed on  
the sample gas before it enters the analyzer.  
CALIBRATION GAS SOURCES:  
SPAN GAS:  
Attach a gas line from the source of calibration gas (e.g. a Teledyne’s M700E Dynamic Dilution  
Calibrator) to the SPAN inlet.  
ZERO AIR:  
Zero air is supplied internally via a zero air scrubber that draws ambient air through the IZS inlet.  
INPUT GAS VENTING:  
The zero air supply and sample gas line MUST be vented in order to ensure that the gases input do not exceed  
the maximum inlet pressure of the analyzer as well as to prevent back diffusion and pressure effects. These  
vents should be:  
At least 0.2m long;  
No more than 2m long and;  
Vented outside the shelter or immediate area surrounding the instrument.  
EXHAUST OUITLET  
Attach an exhaust line to the analyzer’s EXHAUST outlet fitting. The exhaust line should be:  
PTEF tubing; minimum O.D ¼”;  
A maximum of 10 meters long;  
Vented outside the analyzer’s enclosure.  
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5.6.5. ZERO/SPAN/SHUTOFF WITH INTERNAL ZERO AIR SCRUBBER  
(OPTION 50E)  
5.6.5.1. Internal Pneumatics (OPT 50E)  
Figure 5-9:  
Internal Pneumatic Flow OPT 50E – Zero/Span/Shutoff Valves with Internal Zero Air  
Scrubber  
Table 5-4: Zero/Span Valve Operating States for Option 50E  
Mode  
Valve  
Condition  
Sample/Cal  
Zero/Span  
Open to SAMPLE inlet  
Open to internal ZERO AIR scrubber  
Closed  
SAMPLE  
(Normal  
State)  
Shutoff Valve  
Sample/Cal  
Zero/Span  
Open to zero/span valve  
Open to internal ZERO AIR scrubber  
Closed  
ZERO CAL  
SPAN CAL  
Shutoff Valve  
Sample/Cal  
Zero/Span  
Open to ZERO/SPAN valve  
Open to SHUTOFF valve  
Shutoff Valve  
Open to PRESSURE SPAN inlet  
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5.6.5.2. Pneumatic Set Up (OPT 50E)  
See Figure 3-2 for the location of gas inlets and outlets.  
Figure 5-10:  
Pneumatic Connections – Option 50E: Zero/Span Calibration Valves  
SAMPLE GAS SOURCE:  
Attach a sample inlet line to the sample inlet port. The SAMPLE input line should not be more than 2 meters  
long.  
Maximum pressure of any gas at the sample inlet should not exceed 1.5 in-hg above ambient pressure  
and ideally should equal ambient atmospheric pressure.  
In applications where the sample gas is received from a pressurized manifold, a vent must be placed on  
the sample gas before it enters the analyzer.  
CALIBRATION GAS SOURCES:  
SPAN GAS:  
Attach a gas line from the pressurized source of calibration gas (e.g. a bottle of NIST-SRM gas) to the  
span inlet.  
Span gas can by generated by a M700E Dynamic Dilution Calibrator.  
ZERO AIR:  
Zero air is supplied internally via a zero air scrubber that draws ambient air through the IZS inlet.  
INPUT GAS VENTING:  
The zero air supply and sample gas line MUST be vented in order to ensure that the gases input do not exceed  
the maximum inlet pressure of the analyzer as well as to prevent back diffusion and pressure effects. These  
vents should be:  
At least 0.2m long;  
No more than 2m long and;  
Vented outside the shelter or immediate area surrounding the instrument.  
A similar vent line should be connected to the VENT SPAN outlet on the back of the analyzer.  
EXHAUST OUITLET  
Attach an exhaust line to the analyzer’s EXHAUST outlet fitting. The exhaust line should be:  
PTEF tubing; minimum O.D ¼”;  
A maximum of 10 meters long;  
Vented outside the analyzer’s enclosure.  
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5.7. COMMUNICATION OPTIONS  
5.7.1. RS-232 MODEM CABLE (OPTION 60A)  
Table 5-5: GFC 7001E/EM Modem Cable Options  
OPTION NO.  
DESCRIPTION  
Shielded, straight-through DB-9F to DB-25M cable of about 1.8 m length.  
60A  
This cable is used to interface with older computers or code activated switches with  
a DB-25 serial connectors.  
Shielded, straight-through DB-9F to DB-9F cable of about 1.8 m length, which should fit  
most computers of recent build.  
60B  
60C  
CAT5 7’ cable, a shielded straight through cable, 2 meters in length, terminated with  
RJ45 connectors.  
For use with the GFC 7001E/EM Analyzer’s optional Ethernet Card (Option 63A).  
5.7.2. RS-232 MULTIDROP (OPTION 62)  
The multidrop option is used with RS232 and utilizes both DB-9 connectors on the rear panel to enable  
communications of up to eight analyzers with the host computer over a chain of RS-232 cables. It is subject to  
the distance limitations of the RS-232 standard.  
Figure 5-11:  
GFC 7001E/EM Multidrop Card Seated on CPU above Disk on Module  
The option consists of a small printed circuit assembly, which plugs into to the analyzer’s CPU card and is  
connected to the RS-232 and COM2 DB9 connectors on the instrument’s back panel via a cable to the  
motherboard.  
One OPT 62 and one OPT 60B are required for each analyzer along the multidrop network.  
See Section 8.2 for information regarding setting up a multidrop network for GFC 7001E/EM Analyzers.  
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5.7.3. ETHERNET (OPTION 63A)  
The ETHERNET option allows the analyzer to be connected to any Ethernet Local Area Network (LAN) running  
TCP/IP. The local area network must have routers capable of operating at 10BaseT. If internet access is  
available through the LAN, this option also allows communication with the instrument over the public internet.  
Maximum communication speed is limited by the RS-232 port to 115.2 kBaud.  
When installed, this option is electronically connected to the instrument’s COM2 serial port making that port no  
longer available for RS-232/RS-485 communications.  
The option consists of a Teledyne’s designed Ethernet card (see Figure 5-12 and Figure 5-13), and a 7-foot long  
CAT-5 network cable, terminated at both ends with standard RJ-45 connectors.  
Figure 5-12:  
GFC 7001E/EM Ethernet Card  
Figure 5-13:  
GFC 7001E/EM Rear Panel with Ethernet Installed  
For more information on setting up and using this option, see Section 8.4.  
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5.7.4. ETHERNET + MULTIDROP (OPT 63C)  
This option allows the instrument to communicate on both RS-232 and ETHERNET networks simultaneously. It  
includes the following:  
RS-232 MULTIDROP (OPT 62)  
ETHERNET (OPT 63A)  
5.8. SECOND GAS SENSORS  
5.8.1. OXYGEN SENSOR (OPTION 65A)  
5.8.1.1. Theory of Operation - Paramagnetic measurement of O2  
The oxygen sensor used in the GFC 7001E/EM Analyzer utilizes the fact that oxygen is attracted into strong  
magnetic field while 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 (see Figure 5-14). 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 present, 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.  
Figure 5-14:  
Oxygen Sensor - Principle of Operation  
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5.8.1.2. Operation within the GFC 7001E/EM 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 CO.  
The O2 concentration is displayed in the upper right-hand corner, alternating with CO concentration.  
Test functions for O2 slope and offset are viewable from the front panel along with the analyzer’s other test  
functions.  
O2 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 9.7.1 for more details.  
Stability of the O2 sensor can be viewed via the front panel (see Section 9.7.1.3).  
The O2 concentration range is 0-100% (user selectable) with 0.1% precision and accuracy.  
The temperature of the O2 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 O2 sensor assembly itself does not have any serviceable parts and is enclosed in an insulated canister.  
5.8.1.3. Pneumatic Operation of the O2 Sensor  
Pneumatically, the O2 sensor draws a flow of 80 cm³/min in addition to the normal sample flow rate. It is  
separately controlled with its own critical flow orifice.  
Figure 5-15:  
GFC 7001E/EM – Internal Pneumatics with O2 Sensor Option 65A  
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5.9. CARBON DIOXIDE SENSOR (OPTION 67A)  
The optional CO2 sensor allows the GFC 7001E/EM to measure both CO and CO2 simultaneously. This option  
includes a CO2 sensor probe, a Logic PCA that conditions the probe output and issues a 0-5 VDC signal to the  
analyzer’s CPU that is used to compute the CO2 concentration.  
The GFC 7001E/EM receives this input, scales it based on the values of the CO2_SLOPE and CO2_OFFSET  
recorded during calibration (see Section 9.7.2).  
Figure 3-4 shows the location of the Sensor Probe and PCA within the GFC 7001E/EM.  
The CO2 sensor assembly itself does not have any serviceable parts and is enclosed in an insulated canister.  
5.9.1. CO2 SENSOR RANGES AND SPECIFICATIONS  
Table 5-6: CO2 Sensor - Available Ranges  
OPTION NO.  
RANGES  
ANALYZER MODEL(S)  
0-20%  
GFC 7001EM  
67A  
Table 5-7: CO2 Sensor Specifications  
Accuracy at 25˚C 0.02% CO + 2% of reading  
Linearity 0.5 % of full scale  
Typical Temperature Dependence -0.1% FS / ˚C  
Long Term Stability <+15 % FS / 2 years  
Response time 20 seconds  
Warm up time 5 minutes  
Power consumption 2.5 watts  
5.9.2. THEORY OF OPERATION  
5.9.2.1. NDIR measurement of CO2  
The optional CO2 sensor is a silicon based Non-Dispersive Infrared (NDIR) sensor. It uses a single-beam, dual  
wavelength measurement method.  
An infrared source at one end of the measurement chamber emits IR radiation into the sensor’s measurement  
chamber where light at the 4.7 μm wavelength is partially absorbed by any CO2 present. A special light filter  
called a Fabry-Perot Interferometer (FPI) is electronically tuned so that only light at the absorption wavelength of  
CO2 is allowed to pass and be detected by the sensor’s IR detector.  
A reference measurement is made by electronically shifting the filter band pass wavelength so that no IR at the  
CO2 absorption wavelength is let through.  
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Figure 5-16:  
CO2 sensor Theory of Operation  
The sensor computes the ratio between the reference signal and the measurement signal to determine the  
degree of light absorbed by CO2 present in the sensor chamber. This dual wavelength method the CO2  
measurement allows the instrument to compensate for ancillary effects like sensor aging and contamination.  
5.9.2.2. Operation within the GFC 7001E/EM Analyzer  
The CO2 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 CO.  
The CO2 concentration is displayed in the upper right-hand corner, alternating with CO concentration.  
Test functions for CO2 slope and offset are viewable from the front panel along with the analyzer’s other  
test functions.  
CO2 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 9.7.2 for more details.  
Stability of the CO2 sensor can be viewed via the front panel (see Section 9.7.2.3).  
The CO2 concentration range is 0-20%. See Section 9.7.2.1 for information on calibrating the CO2.  
5.9.2.3. Pneumatic Operation of the CO2 Sensor  
Pneumatically, the CO2 sensor is placed in line with the sample gas line between the particulate filter and the  
analyzer’s sample chamber. It does not alter the gas flow rate of the sample through the analyzer.  
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Figure 5-17:  
GFC 7001E/EM – Internal Pneumatics with CO2 Sensor Option 66  
5.9.2.4. Electronic Operation of the CO2 Sensor  
The CO2 PCA which is mounted to the rear side of the Relay Board Mounting Bracket controls the CO2 Sensor.  
It converts the sensor’s digital output to an analog voltage that is measured with the motherboard and draws 12  
VDC from the analyzer via the relay card from which converts to fit the power needs of the probe and its own  
onboard logic. It outputs a 0-5 VDC analog signal to the analyzer’s CPU via the motherboard that corresponds  
to the concentration of CO2 measured by the probe.  
Figure 5-18:  
CO2 Sensor Option PCA Layout and Electronic Connections  
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5.10. CONCENTRATION ALARM RELAY (OPTION 61)  
The Teledyne “E” series analyzers have an option for four (4) “dry contact” relays on the rear panel of the  
instrument. This relay option is different from and in addition to the “Contact Closures” that come standard  
on all TAI instruments. The relays have 3 pins that have connections on the rear panel (see Figure 5-19).  
They are a Common (C), a Normally Open (NO), & a Normally Closed (NC) pin.  
Figure 5-19:  
Concentration Alarm Relay  
Alarm 1  
Alarm 2  
Alarm 3  
Alarm 4  
“System OK 2”  
“Conc 1”  
“Conc 2”  
“Range Bit”  
“Alarm 1” Relay  
Alarm 1 which is “System OK 2” (system OK 1, is the status bit) is in the energized state when the  
instrument is “OK” & there are no warnings. If there is a warning active or if the instrument is put into the “DIAG”  
mode, Alarm 1 will change states. This alarm has “reverse logic” meaning that if you put a meter across the  
Common & Normally Closed pins on the connector you will find that it is OPEN when the instrument is OK. This  
is so that if the instrument should turn off or loose power, it will change states & you can record this with a data  
logger or other recording device.  
“Alarm 2” Relay & “Alarm 3” Relay  
The “Alarm 2 Relay” on the rear panel, is associated with the “Concentration Alarm 1” set point in the  
software & the “Alarm 3 Relay” on the rear panel is associated with the “Concentration Alarm 2” set point in the  
software.  
Alarm 2 Relay  
Alarm 3 Relay  
Alarm 2 Relay  
Alarm 3 Relay  
CO Alarm 1 = xxx PPM  
CO2 Alarm 2 = xxx PPM  
CO Alarm 1 = xxx PPM  
CO2 Alarm 2 = xxx PPM  
The Alarm 2 Relay will be turned on any time the concentration set-point is exceeded & will return to its  
normal state when the concentration value goes back below the concentration set-point.  
Even though the relay on the rear panel is a NON-Latching alarm & resets when the concentration goes  
back below the alarm set point, the warning on the front panel of the instrument will remain latched until it is  
cleared. You can clear the warning on the front panel by either pushing the CLR button on the front panel or  
through the serial port.  
In instruments that sample more than one gas type, there could be more than one gas type triggering the  
Concentration 1 Alarm (“Alarm 2” Relay). For example, the GFC 7001EM instrument can monitor both CO &  
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CO2 gas. The software is flexible enough to allow you to configure the alarms so that you can have 2 alarm  
levels for each gas.  
CO Alarm 1 = 20 PPM  
CO Alarm 2 = 100 PPM  
CO2 Alarm 1 = 20 PPM  
CO2 Alarm 2 = 100 PPM  
In this example, CO Alarm 1 & CO2 Alarm 1 will both be associated with the “Alarm 2” relay on the rear panel.  
This allows you do have multiple alarm levels for individual gasses.  
A more likely configuration for this would be to put one gas on the “Alarm 1” relay & the other gas on the “Alarm  
2” relay.  
CO Alarm 1 = 20 PPM  
CO Alarm 2 = Disabled  
CO2 Alarm 1 = Disabled  
CO2 Alarm 2 = 100 PPM  
“Alarm 4” Relay  
This relay is connected to the “range bit”. If the instrument is configured for “Auto Range” & the  
instrument goes up into the high range, it will turn this relay on.  
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5.11. SPECIAL FEATURES  
5.11.1. DILUTION RATIO OPTION  
The Dilution Ratio Option is a software option that is designed for applications where the Sample gas is diluted  
before being analyzed by the GFC 7001E. 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  
analyzer’s 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 6.6.5.  
5.11.2. MAINTENANCE MODE SWITCH  
TAI’s instruments can be equipped with a switch that places the instrument in maintenance mode. When  
present, the switch is accessed by opening the hinged front panel and is located on the rearward facing side of  
the display/keyboard driver PCA, on the left side, near the particulate filter.  
When in maintenance mode the instrument ignores all commands received via the COMM 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 and send data when requested.  
This option is of particular use for instruments connected to multidrop or Hessen protocol networks.  
5.11.3. SECOND LANGUAGE SWITCH  
TAI’s instruments can be equipped with a switch that activates an alternate set of display message in a language  
other than the instrument’s default language. To activate this feature, the instrument must have a specially  
programmed Disk-on-Module (DOM) containing the second language. Call Customer Service for this DOM.  
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Part II Operating Instructions  
Model GFC7001E Carbon Dioxide Analyzer  
PART II  
–
OPERATING INSTRUCTIONS  
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6. BASIC OPERATION  
The GFC 7001E/EM Analyzer is a computer-controlled analyzer with a dynamic menu interface that allows all  
major operations to be controlled from the front panel display and keyboard through user-friendly menus (a  
complete set of menu trees is located in Appendix A of this manual).  
This section includes step-by-step instructions for using the display/keyboard to set up and operate the GFC  
7001E/EM Analyzer's basic CO measurement features and functional modes.  
6.1. OVERVIEW OF OPERATING MODES  
The GFC 7001E/EM 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. If  
the analyzer is configured to measure more than one gas (e.g. CO along with O2 or CO2) the display will cycle  
through gas list.  
While in SAMPLE mode calibrations can be performed and TEST functions as well as WARNING messages can  
be examined. If any of the analyzer’s analog outputs are enabled, the current concentration value will be  
available at the analog output connector.  
The second most important operating mode is SETUP mode. This mode is used for performing certain  
configuration operations, such as programming the iDAS system or the configurable analog output channels, or  
setting up the analyzer’s serial communication channels (RS-232/RS-485/Ethernet). The SETUP mode is also  
used for performing various diagnostic tests during troubleshooting.  
Message Field  
Concentration Field  
Mode Field  
SAMPLE  
RANGE=50.00 PPM  
CO= XX.XX  
SETUP  
<TST TST> CAL  
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.  
Besides SAMPLE and SETUP, other modes the analyzer can be operated in are:  
Table 6-1:  
Analyzer Operating Modes  
MODE  
SAMPLE  
SAMPLE A  
M-P CAL  
EXPLANATION  
Sampling normally, flashing text indicates adaptive filter is on.  
Indicates that unit is in Sample Mode while AUTOCAL feature is active (Internal Span Only).  
This is the basic calibration mode of the instrument and is activated by pressing the CAL key.  
SETUP mode is being used to configure the analyzer. The gas measurement will continue during this  
process. The revision of the GFC 7001E/EM firmware being run will appear after the word “SETUP”  
SETUP [X.X]  
ZERO CAL [type] 1,2 & 3  
LO CAL [type] 2 & 3  
SPAN CAL [type] 1,2 & 3  
DIAG Mode  
Unit is performing ZERO calibration procedure.  
Unit is performing LOW SPAN (midpoint) cal check procedure.  
Unit is performing SPAN calibration procedure.  
One of the analyzer’s diagnostic modes is active (Section 7.3).  
[type:]  
1A: Initiated automatically by the AUTOCAL feature (Internal Span Only).  
2M: initiated manually by the user via the front panel controls.  
3R: initiated remotely through the COM ports or digital control inputs.  
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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/RS-485/Ethernet ports.  
NOTE  
A value of “XXXX” displayed in the CO Concentration field means that the M/R ratio is invalid because  
CO REF is either too high (> 4950 mVDC) or too low (< 1250 VDC).  
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.  
A variety of TEST functions are available for viewing at the front panel whenever the analyzer is at the MAIN  
MENU. These functions provide information about the various functional parameters related to the analyzers  
operation and its measurement of gas concentrations. This information is particularly a performance problem  
during troubleshooting (see Section 13.1.2).  
To view these TEST functions, press,  
Figure 6-2:  
Viewing GFC 7001E/EM Test Functions  
NOTE  
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 altitude. A variety of  
factors such as air conditioning and passing storms can cause changes in the absolute atmospheric  
pressure.  
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Table 6-2:  
DISPLAY TITLE UNITS  
Test Functions Defined  
MEANING  
PARAMETER  
Standard deviation of CO concentration readings. Data points are  
recorded every ten seconds using the last 25 data points. This  
PPB3, PPM  
STABIL  
UGM3, MGM function can be reset to show O2 or CO2 stability in instruments with  
those sensor options installed.  
Stability  
RANGE  
RANGE11  
RANGE21  
The full scale limit at which the reporting range of the analyzer is  
currently set. THIS IS NOT the Physical Range of the instrument.  
See Section 6.6.1 for more information.  
PPB, PPM,  
UGM, MGM  
Range  
O2 Range 1  
CO2 Range2  
O2 RANGE  
%
%
The range setting for the optional O2 Sensor.  
The range setting for the optional CO2 Sensor.  
CO2 RANGE  
The demodulated, peak IR detector output during the measure  
portion of the GFC Wheel cycle.  
CO MEAS  
CO REF  
MV  
MV  
CO Measure  
The demodulated, peak IR detector output during the reference  
portion of the GFC Wheel cycle.  
CO Reference  
The result of CO MEAS divided by CO REF. This ratio is the  
primary value used to compute CO concentration. The value  
displayed is not linearized.  
Measurement /  
Reference Ratio  
MR Ratio  
PRES  
-
The absolute pressure of the Sample gas as measured by a  
pressure sensor located inside the sample chamber.  
In-Hg-A  
Sample Pressure  
Sample Flow  
Sample mass flow rate as measured by the flow rate sensor in the  
sample gas stream.  
SAMPLE FL  
SAMP TEMP  
BENCH TEMP  
cm3/min  
C  
Sample  
Temperature  
The temperature of the gas inside the sample chamber.  
Optical bench temperature.  
Bench  
Temperature  
C  
Wheel  
Temperature  
WHEEL TEMP  
BOX TEMP  
GFC Wheel temperature.  
C  
C  
C  
The temperature inside the analyzer chassis.  
The current temperature of the O2 sensor measurement cell.  
Box Temperature  
O2 CELL TEMP3  
O2 Cell  
Temperature3  
Photo-detector  
Temp. Control  
Voltage  
The drive voltage being supplied to the thermoelectric coolers of the  
IR photo-detector by the sync/demod Board.  
PHT DRIVE  
mV  
The sensitivity of the instrument as calculated during the last  
calibration activity.  
SLOPE  
-
-
Slope  
Offset  
The overall offset of the instrument as calculated during the last  
calibration activity.  
OFFSET  
O2 Sensor  
Slope 1  
O2 SLOPE  
O2 OFFSET  
CO2 SLOPE  
-
-
-
O2 slope, computed during zero/span calibration.  
O2 offset, computed during zero/span calibration.  
CO2 slope, computed during zero/span calibration.  
O2 Sensor Offset 1  
CO2 Sensor  
Slope2  
CO2 Sensor  
Offset 2  
CO2 OFFSET  
-
CO2 offset, computed during zero/span calibration.  
The current time. This is used to create a time stamp on iDAS  
readings, and by the AUTOCAL feature to trigger calibration events.  
TIME  
-
Current Time  
1 Only appears when the optional O2 sensor is installed.  
2 Only appears when the optional CO2 sensor is installed.  
3 Only available on the GFC 7001E.  
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6.3. WARNING MESSAGES  
The most common instrument failures will be reported as a warning on the analyzer’s front panel and through the  
COMM ports. Section 13.1.1 explains how to use these messages to troubleshoot problems. Section 6.3 shows  
how to view and clear warning messages.  
Table 6-3:  
List of Warning Messages  
MESSAGE  
MEANING  
ANALOG CAL WARNING  
BENCH TEMP WARNING  
BOX TEMP WARNING  
CANNOT DYN SPAN2  
CANNOT DYN ZERO3  
CONC ALRM1 WARNING1  
CONC ALRM2 WARNING1  
CONFIG INITIALIZED  
DATA INITIALIZED  
The instrument’s A/D circuitry or one of its analog outputs is not calibrated.  
The temperature of the optical bench is outside the specified limits.  
The temperature inside the chassis is outside the specified limits.  
Remote span calibration failed while the dynamic span feature was set to turned on.  
Remote zero calibration failed while the dynamic zero feature was set to turned on.  
Concentration alarm 1 is enabled and the measured CO level is ≥ the set point.  
Concentration alarm 2 is enabled and the measured CO level is ≥ the set point.  
Configuration storage was reset to factory configuration or erased.  
iDAS data storage was erased.  
O2 CELL TEMP WARN2  
PHOTO TEMP WARNING  
REAR BOARD NOT DET  
RELAY BOARD WARN  
SAMPLE FLOW WARN  
SAMPLE PRESS WARN  
SAMPLE TEMP WARN  
SOURCE WARNING  
O2 sensor cell temperature outside of warning limits.  
The temperature of the IR photo detector is outside the specified limits.  
The CPU is unable to communicate with the motherboard.  
The firmware is unable to communicate with the relay board.  
The flow rate of the sample gas is outside the specified limits.  
Sample gas pressure outside of operational parameters.  
The temperature of the sample gas is outside the specified limits.  
The IR source may be faulty.  
SYSTEM RESET1  
The computer was rebooted.  
WHEEL TEMP WARNING  
The Gas Filter Correlation Wheel temperature is outside the specified limits.  
1 Alarm warnings only present when 0ptional alarm package is activated.  
2 Only enabled when the optional O2 Sensor is installed.  
Teledyne Analytical Instruments  
88  
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