Teledyne 9110T instruction manual 285

Model 9110T NOx Analyzer	Table of Contents
12.7.2. DC Power Supply	283
12.7.3. I2C Bus	285
12.7.4. LCD/Display Module	285
12.7.5. Relay PCA	285
12.7.6. Motherboard	285
12.7.7. Pressure / Flow Sensor Assembly	289
12.7.8. CPU	290
12.7.9. RS-232 Communications	290
12.7.10. NO2  NO Converter	291
12.7.11. Simplified GPT Calibration	296
12.7.12. Photomultiplier Tube (PMT) Sensor Module	300
12.7.13. PMT Preamplifier Board	302
12.7.14. PMT Temperature Control PCA	303
12.7.15. O3 Generator	304
12.7.16. Internal Span Gas Generator and Valve Options	305
12.7.17. Temperature Sensor	306
12.8. Service Procedures	308
12.8.1. Disk-On-Module Replacement Procedure	308
12.8.2. O3 Generator Replacement	309
12.8.3. Sample and Ozone (Perma Pure®) Dryer Replacement	309
12.8.4. PMT Sensor Hardware Calibration	310
12.8.5. Replacing the PMT, HVPS or TEC	312
12.8.6. Removing / Replacing the Relay PCA from the Instrument	315
12.9. Frequently Asked Questions	316
12.10. Technical Assistance	318
13. Principles of Operation	319
13.1. Measurement Principle	319
13.1.1. Chemiluminescence Creation in the 9110T Reaction Cell	319
13.1.2. Chemiluminescence Detection in the 9110T Reaction Cell	320
13.1.3. NOX and NO2 Determination	321
13.1.4. Auto Zero	322
13.1.5. Measurement Interferences	323
13.2. Pneumatic Operation	326
13.2.1. Sample Gas Flow	326
13.2.2. Flow Rate Control - Critical Flow Orifices	330
13.2.3. Ozone Gas Generation and Air Flow	332
13.2.4. Pneumatic Sensors	335
13.3. Electronic Operation	338
13.3.1. Overview	338
13.3.2. CPU	339
13.3.3. Motherboard	340
13.3.4. Relay PCA	345
13.4. Sensor Module, Reaction Cell	351
13.5. Photo Multiplier Tube (PMT)	352
13.5.1. PMT Preamplifier	353
13.5.2. PMT Cooling System	355
13.6. Pneumatic Sensor Board	356
13.7. Power Supply/Circuit Breaker	357
13.7.1. AC Power Configuration	358
13.8. Front Panel Touchscreen/Display Interface	363
13.8.1. LVDS Transmitter Board	364
13.8.2. Front Panel Touchscreen/Display Interface PCA	364
13.9. Software Operation	364
13.9.1. Adaptive Filter	365
13.9.2. Temperature/Pressure Compensation (TPC)	365
13.9.3. Calibration - Slope and Offset	365
14. A Primer on Electro-Static Discharge	367
14.1. How Static Charges are Created	367
14.2. How Electro-Static Charges Cause Damage	368
14.3. Common Myths About ESD Damage	369
14.4. Basic Principles of Static Control	369
14.4.1. General Rules	369
14.5. Basic anti-ESD Procedures for Analyzer Repair and Maintenance	371
14.5.1. Working at the Instrument Rack	371
14.5.2. Working at an Anti-ESD Work Bench	371

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