Teledyne API - T100 UV Fluorescence SO
2
Analyzer
ix
Other Performance Problems .............................................................................................................. 232
Excessive noise ............................................................................................................................... 232
Slow Response ................................................................................................................................ 232
The Analyzer Doesn’t Appear on the LAN or Internet ..................................................................... 232
Subsystem Checkout ............................................................................................................................ 233
AC Power Configuration .................................................................................................................. 233
DC Power Supply ............................................................................................................................. 234
I
2
C Bus ............................................................................................................................................. 235
Touch-screen Interface .................................................................................................................... 235
LCD Display Module ........................................................................................................................ 235
Relay Board ..................................................................................................................................... 236
Motherboard ..................................................................................................................................... 236
CPU .................................................................................................................................................. 238
RS-232 Communication ................................................................................................................... 238
Shutter System .............................................................................................................................. 239
PMT Sensor ................................................................................................................................... 240
PMT Preamplifier Board ................................................................................................................. 240
PMT Temperature Control PCA ..................................................................................................... 240
High Voltage Power Supply ........................................................................................................... 240
Pneumatic Sensor Assembly ......................................................................................................... 241
Sample Pressure ........................................................................................................................... 242
IZS Option ...................................................................................................................................... 242
Box Temperature ........................................................................................................................... 242
PMT Temperature .......................................................................................................................... 242
Service Procedures ............................................................................................................................... 243
Disk-on-Module Replacement ......................................................................................................... 243
Sensor Module Repair & Cleaning .................................................................................................. 245
Frequently Asked Questions (FAQs) .................................................................................................. 260
Technical Assistance ............................................................................................................................ 261
12. PRINCIPLES OF OPERATION ..................................................................................... 263
Sulfur Dioxide (SO
2
) Sensor Principles of operation ........................................................................ 263
SO
2
Ultraviolet Fluorescence Measurement Principle ..................................................................... 263
The UV Light Path ............................................................................................................................ 266
UV Source Lamp .............................................................................................................................. 267
The Reference Detector ................................................................................................................... 268
The PMT .......................................................................................................................................... 268
UV Lamp Shutter & PMT Offset ....................................................................................................... 268
Optical Filters ................................................................................................................................... 269
Optical Lenses ................................................................................................................................. 271
Measurement Interferences ............................................................................................................. 272
Oxygen (O
2
) Sensor Principles of Operation ..................................................................................... 273
Paramagnetic Measurement of O
2
................................................................................................... 273
O
2
Sensor Operation within the T100 Analyzer ............................................................................... 274
Carbon Dioxide (CO
2
) Sensor Principles of Operation ..................................................................... 275
NDIR Measurement of CO
2
............................................................................................................. 275
CO
2
Operation within the T100 Analyzer ......................................................................................... 276
Electronic Operation of the CO
2
Sensor .......................................................................................... 276
Pneumatic Operation ............................................................................................................................ 277
Sample Gas Flow ............................................................................................................................. 277
Flow Rate Control ............................................................................................................................ 278
Hydrocarbon Scrubber (Kicker) ....................................................................................................... 279
Pneumatic Sensors .......................................................................................................................... 280
Electronic Operation ............................................................................................................................. 281
CPU .................................................................................................................................................. 283
Sensor Module ................................................................................................................................. 284
Photo Multiplier Tube (PMT) ............................................................................................................ 286
PMT Cooling System ....................................................................................................................... 287