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Teledyne API - Model T200H/T200M Operation Manual
7.2.2. T200M Internal Gas Flow Diagrams ..................................................................................................................... 227
7.2.3. Zero or Low Flow Problems .................................................................................................................................. 229
7.2.4. High Flow .............................................................................................................................................................. 231
7.2.5. Sample Flow is Zero or Low But Analyzer Reports Correct Flow ......................................................................... 231
7.3. Calibration Problems .................................................................................................................................................... 232
7.3.1. Negative Concentrations ...................................................................................................................................... 232
7.3.2. No Response ........................................................................................................................................................ 232
7.3.3. Unstable Zero and Span ....................................................................................................................................... 233
7.3.4. Inability to Span - No SPAN Button ...................................................................................................................... 233
7.3.5. Inability to Zero - No ZERO Button ....................................................................................................................... 234
7.3.6. Non-Linear Response ........................................................................................................................................... 234
7.3.7. Discrepancy Between Analog Output and Display ............................................................................................... 235
7.4. Other Performance Problems ....................................................................................................................................... 235
7.4.1. Excessive Noise ................................................................................................................................................... 235
7.4.2. Slow Response ..................................................................................................................................................... 236
7.4.3. Auto Zero Warnings .............................................................................................................................................. 236
7.5. Subsystem Checkout ................................................................................................................................................... 237
7.5.1. Simple Leak Check Using Vacuum and Pump ..................................................................................................... 237
7.5.2. Detailed Leak Check Using Pressure ................................................................................................................... 237
7.5.3. Performing a Sample Flow Check ........................................................................................................................ 238
7.5.4. AC Power Configuration ....................................................................................................................................... 238
7.5.5. DC Power Supply Test Points .............................................................................................................................. 243
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C Bus ................................................................................................................................................................. 243
7.5.7. Touch Screen Interface ........................................................................................................................................ 244
7.5.8. LCD Display Module ............................................................................................................................................. 244
7.5.9. General Relay Board Diagnostics ......................................................................................................................... 244
7.5.10. Motherboard ....................................................................................................................................................... 245
7.5.11. CPU .................................................................................................................................................................... 247
7.5.12. RS-232 Communication ...................................................................................................................................... 248
7.5.13. PMT Sensor ........................................................................................................................................................ 249
7.5.14. PMT Preamplifier Board ..................................................................................................................................... 249
7.5.15. High Voltage Power Supply ................................................................................................................................ 249
7.5.16. Pneumatic Sensor Assembly .............................................................................................................................. 250
Converter .................................................................................................................................................... 251
2
Generator ...................................................................................................................................................... 253
3
7.5.19. Box Temperature ................................................................................................................................................ 253
7.5.20. PMT Temperature............................................................................................................................................... 253
7.6. Service Procedures ...................................................................................................................................................... 254
7.6.1. Disk-on-Module Replacement .............................................................................................................................. 254
Generator Replacement .................................................................................................................................. 255
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7.6.3. Sample and Ozone Dryer Replacement ............................................................................................................... 255
7.6.4. PMT Sensor Hardware Calibration ....................................................................................................................... 256
7.6.5. Replacing the PMT, HVPS or TEC ....................................................................................................................... 258
7.7. Removing / Replacing the Relay PCA from the Instrument .......................................................................................... 261
7.8. Frequently Asked Questions ........................................................................................................................................ 262
7.9. Technical Assistance .................................................................................................................................................... 263
8. Principles of Operation ......................................................................................................................................................... 265
8.1. Measurement Principle ................................................................................................................................................. 265
8.1.1. Chemiluminescence ............................................................................................................................................. 265
and NO
X
2
8.2. Chemiluminescence Detection ..................................................................................................................................... 268
8.2.1. The Photo Multiplier Tube ..................................................................................................................................... 268
8.2.2. Optical Filter ......................................................................................................................................................... 268
8.2.3. Auto Zero .............................................................................................................................................................. 269
8.2.4. Measurement Interferences .................................................................................................................................. 270
8.3. Pneumatic Operation .................................................................................................................................................... 272
8.3.1. Pump and Exhaust Manifold ................................................................................................................................. 272
8.3.2. Sample Gas Flow ................................................................................................................................................. 273
8.3.3. Flow Rate Control - Critical Flow Orifices ............................................................................................................. 274
8.3.4. Sample Particulate Filter ....................................................................................................................................... 278
8.3.5. Ozone Gas Air Flow.............................................................................................................................................. 279
Generator ........................................................................................................................................................ 280
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8.3.7. Permeation Dryer.................................................................................................................................................. 281
8.3.8. Ozone Supply Air Filter ......................................................................................................................................... 283
07270D DCN7141
Slopes .......................................................................................................... 235
X
Determination ................................................................................................................................. 267
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