Filter
Top Products
Teledyne API - T100 UV Fluorescence SO2 Analyzer
xiv
11.3.3. Changing the External Zero Air Scrubber......................................................................................... 229
11.3.4. Changing the Critical Flow Orifice .................................................................................................... 230
11.3.5. Checking for Light Leaks .................................................................................................................. 231
11.3.6. Detailed Pressure Leak Check ......................................................................................................... 232
11.3.7. Performing a Sample Flow Check .................................................................................................... 233
11.3.8. Hydrocarbon Scrubber (Kicker) ........................................................................................................ 233
12. TROUBLESHOOTING & SERVICE............................................................................... 235
12.1. General Troubleshooting ...................................................................................................................... 236
12.1.1. Fault Diagnostics with Warning Messages....................................................................................... 236
12.1.2. Fault Diagnosis with Test Functions................................................................................................. 239
12.1.3. Using the Diagnostic Signal I/O Functions ....................................................................................... 241
12.2. Status LEDs............................................................................................................................................ 243
12.2.1. Motherboard Status Indicator (Watchdog)........................................................................................ 243
12.2.2. CPU Status Indicators....................................................................................................................... 243
12.2.3. Relay Board Status LEDs................................................................................................................. 244
12.3. Gas Flow Problems................................................................................................................................ 244
12.3.1. Zero or Low Sample Flow................................................................................................................. 244
12.3.2. High Flow.......................................................................................................................................... 245
12.4. Calibration Problems............................................................................................................................. 245
12.4.1. Negative Concentrations................................................................................................................... 245
12.4.2. No Response .................................................................................................................................... 245
12.4.3. Unstable Zero and Span................................................................................................................... 246
12.4.4. Inability to Span - No SPAN Button .................................................................................................. 246
12.4.5. Inability to Zero - No ZERO Button................................................................................................... 247
12.4.6. Non-Linear Response....................................................................................................................... 247
12.4.7. Discrepancy Between Analog Output and Display........................................................................... 248
12.5. Other Performance Problems............................................................................................................... 248
12.5.1. Excessive noise ................................................................................................................................ 248
12.5.2. Slow Response................................................................................................................................. 248
12.5.3. The Analyzer Doesn’t Appear on the LAN or Internet ...................................................................... 248
12.6. Subsystem Checkout............................................................................................................................. 249
12.6.1. AC Power Configuration ................................................................................................................... 249
12.6.2. DC Power Supply.............................................................................................................................. 250
12.6.3. I
2
C Bus.............................................................................................................................................. 251
12.6.4. Touch-screen Interface..................................................................................................................... 251
12.6.5. LCD Display Module ......................................................................................................................... 251
12.6.6. Relay Board ...................................................................................................................................... 252
12.6.7. Motherboard...................................................................................................................................... 252
12.6.8. CPU................................................................................................................................................... 254
12.6.9. RS-232 Communication.................................................................................................................... 254
12.6.10. Shutter System ............................................................................................................................... 255
12.6.11. PMT Sensor.................................................................................................................................... 256
12.6.12. PMT Preamplifier Board.................................................................................................................. 256
12.6.13. PMT Temperature Control PCA...................................................................................................... 256
12.6.14. High Voltage Power Supply............................................................................................................ 256
12.6.15. Pneumatic Sensor Assembly.......................................................................................................... 257
12.6.16. Sample Pressure ............................................................................................................................ 258
12.6.17. IZS Option....................................................................................................................................... 258
12.6.18. Box Temperature ............................................................................................................................ 258
12.6.19. PMT Temperature........................................................................................................................... 258
12.7. Service Procedures................................................................................................................................ 259
12.7.1. Disk-on-Module Replacement .......................................................................................................... 259
12.7.2. Sensor Module Repair & Cleaning ................................................................................................... 260
12.8. Frequently Asked Questions (FAQs) ................................................................................................... 276
12.9. Technical Assistance............................................................................................................................. 277
13. PRINCIPLES OF OPERATION...................................................................................... 279
13.1. Sulfur Dioxide (SO
2
) Sensor Principles of operation ......................................................................... 279
06807C DCN6650