Table of Contents
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8.4.1. Linearity Test....................................................................................................................... 194
8.4.2. O
Loss Correction Factor .................................................................................................. 195
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8.4.3. Span Drift Check................................................................................................................. 196
8.5.1. Multipoint Calibration Audit ................................................................................................. 197
8.5.2. Data Processing Audit ........................................................................................................ 198
8.5.3. System Audit ....................................................................................................................... 199
8.5.4. Assessment of Monitoring Data for Precision and Accuracy............................................. 199
................................................................................................................................. 203
9. MAINTENANCE SCHEDULE & PROCEDURES...........................................205
9.3.1. Replacing the Sample Particulate Filter ............................................................................. 208
9.3.2. Rebuilding the Sample Pump............................................................................................. 209
9.3.3. Replacing the IZS Zero Air Scrubber ................................................................................. 210
9.3.4. Performing Leak Checks .................................................................................................... 211
9.3.5. Performing a Sample Flow Check...................................................................................... 213
9.3.6. Flow Calibration .................................................................................................................. 214
9.3.7. Cleaning the Absorption Tube ............................................................................................ 215
10. THEORY OF OPERAT ION............................................................................217
10.1.2. The Absorption Path ......................................................................................................... 219
10.1.3. The Reference / Measurement Cycle .............................................................................. 220
10.1.4. Interferent Rejection ......................................................................................................... 221
10.2.1. Sample Gas Air Flow ........................................................................................................ 223
10.2.2. Critical Flow Orifice........................................................................................................... 224
10.2.3. Particulate Filter................................................................................................................ 225
10.2.4. Zero Span Gas Supply Options ....................................................................................... 225
10.3.1. Overview ........................................................................................................................... 226
10.3.2. CPU................................................................................................................................... 228
10.3.3. Optical Bench................................................................................................................... 229
10.3.4. Pneumatic Sensor Board ................................................................................................. 231
10.3.5. Relay Board ...................................................................................................................... 231
10.3.6. Mother Board .................................................................................................................... 233
10.3.7. Power Supply/ Circuit Breaker ......................................................................................... 236
.................................................................................................................................. 237
10.5.1. Adaptive Filter ................................................................................................................... 240
10.5.2. Calibration - Slope and Offset .......................................................................................... 241
10.5.3. Internal Data Acquisition System (iDAS) ......................................................................... 242
11. TROUBLESHOOTING & REPAIR PROCEDURES.....................................243
vi
................................................................................................................ 197
.............................................................................................................. 205
......................................................................................................... 208
............................................................................................................. 218
Concentration ........................................................................................... 218
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.............................................................................................................. 223
............................................................................................................. 226
............................................................................................................... 239
................................................................................. 199
..................................................................... 207
Model 400E Ozone Analyzer
Instruction Manual
P/N 04316 Rev: B
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