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Model 9110TH NOx Analyzer Table of Contents
Teledyne Analytical Instruments 13
10.2. Calibration Equipment, Supplies, and Expendables ................................................................................................... 222
10.2.1. Spare Parts and Expendable Supplies ............................................................................................................... 222
10.2.2. Calibration Gas and Zero Air Sources ................................................................................................................ 223
10.2.3. Data Recording Device ....................................................................................................................................... 223
10.2.4. Record Keeping .................................................................................................................................................. 223
10.3. Calibration Frequency ................................................................................................................................................ 223
10.4. Level 1 Calibrations versus Level 2 Checks ............................................................................................................... 224
10.5. Gas Phase Titration (GPT) ......................................................................................................................................... 225
10.5.1. GPT Principle of Operation ................................................................................................................................. 225
10.5.2. GPT Calibrator Check Procedure ....................................................................................................................... 225
10.6. GPT Multipoint Calibration Procedure ........................................................................................................................ 228
10.6.1. Set Up for GPT Multipoint Calibration of the 9110T ............................................................................................ 229
10.6.2. Zero Calibration .................................................................................................................................................. 230
10.6.3. Span Calibration ................................................................................................................................................. 230
10.7. GPT NO
2
Check ......................................................................................................................................................... 231
10.8. Other Quality Assurance Procedures ......................................................................................................................... 232
10.8.1. Summary of Quality Assurance Checks ............................................................................................................. 232
10.8.2. Short Calibration Checks .................................................................................................................................... 233
10.8.3. Zero/Span Check Procedures ............................................................................................................................ 233
10.8.4. Precision Check .................................................................................................................................................. 234
10.9. Certification of Working Standards ............................................................................................................................. 234
10.10. References ............................................................................................................................................................... 235
PART III – Maintenance and Service .................................................................................................................................. 237
11. Instrument Maintenance ..................................................................................................................................................... 239
11.1. Maintenance Schedule ............................................................................................................................................... 239
11.2. Predictive Diagnostics ................................................................................................................................................ 241
11.3. Maintenance Procedures ............................................................................................................................................ 241
11.3.1. Replacing the Sample Particulate Filter .............................................................................................................. 242
11.3.2. Changing the O
3
Dryer Particulate Filter ............................................................................................................. 243
11.3.3. Changing the Ozone Cleanser Chemical ............................................................................................................ 244
11.3.4. Maintaining the External Sample Pump (Pump Pack) ........................................................................................ 247
11.3.5. Changing the Pump DFU Filter ........................................................................................................................... 247
11.3.6. Changing the Internal Span Gas Generator Permeation Tube ........................................................................... 249
11.3.7. Changing the External Zero Air Scrubber (OPT 86C) ......................................................................................... 249
11.3.8. Changing the NO
2
Converter .............................................................................................................................. 252
11.3.9. Cleaning the Reaction Cell ................................................................................................................................. 254
11.3.10. Replacing Critical Flow Orifices ........................................................................................................................ 256
11.3.11. Checking for Light Leaks .................................................................................................................................. 257
11.3.12. Checking for Pneumatic Leaks ......................................................................................................................... 258
12. Troubleshooting & Service ................................................................................................................................................. 261
12.1. General Troubleshooting ............................................................................................................................................ 261
12.1.1. Fault Diagnosis with WARNING Messages ........................................................................................................ 262
12.1.2. Fault Diagnosis With Test Functions .................................................................................................................. 266
12.1.3. DIAG SIGNAL I/O: Using the Diagnostic Signal I/O Function ....................................................................... 267
12.2. Using the Analog Output Test Channel ...................................................................................................................... 269
12.3. Using the Internal Electronic Status LEDs .................................................................................................................. 270
12.3.1. CPU Status Indicator .......................................................................................................................................... 270
12.3.2. Relay PCA Status LEDs ..................................................................................................................................... 270
12.4. Gas Flow Problems .................................................................................................................................................... 272
12.4.1. Zero or Low Flow Problems ................................................................................................................................ 272
12.5. Calibration Problems .................................................................................................................................................. 276
12.5.1. Negative Concentrations .................................................................................................................................... 276
12.5.2. No Response ...................................................................................................................................................... 277
12.5.3. Unstable Zero and Span ..................................................................................................................................... 277
12.5.4. Inability to Span - No SPAN Button (CALS) ........................................................................................................ 278
12.5.5. Inability to Zero - No ZERO Button (CALZ) ......................................................................................................... 278
12.5.6. Non-Linear Response ......................................................................................................................................... 279
12.5.7. Discrepancy Between Analog Output and Display ............................................................................................. 280
12.5.8. Discrepancy Between NO and NOX slopes ........................................................................................................ 280
12.6. Other Performance Problems ..................................................................................................................................... 281
12.6.1. Excessive Noise ................................................................................................................................................. 281
12.6.2. Slow Response ................................................................................................................................................... 281
12.6.3. Auto Zero Warnings ........................................................................................................................................... 282
12.7. Subsystem Checkout.................................................................................................................................................. 283
12.7.1. AC Main Power ................................................................................................................................................... 283