Teledyne 6200E - Sulfides Analyzer - Manual (Page 7)

Model 6200E Instruction Manual
M6200E Rev: A1 7
10.4.7. Pneumatic Sensor Board............................................................................................... 226
10.4.8. Relay Board................................................................................................................ 226
10.4.8.1. Heater Control...................................................................................................... 226
10.4.8.2. Valve Control ....................................................................................................... 226
10.4.9. Status LEDs & Watch Dog Circuitry ................................................................................ 227
10.4.10. Motherboard ............................................................................................................. 228
10.4.10.1. A to D Conversion ............................................................................................... 228
10.4.10.2. Sensor Inputs ..................................................................................................... 228
10.4.10.3. Thermistor Interface............................................................................................ 229
10.4.11. Analog Outputs ......................................................................................................... 229
10.4.12. External Digital I/O .................................................................................................... 230
10.4.13. I 2 C Data Bus ............................................................................................................. 230
10.4.14. Power up Circuit ........................................................................................................ 230
10.5. Power Supply/ Circuit Breaker ............................................................................................. 230
10.6. Communications Interface .................................................................................................. 231
10.6.1. Front Panel Interface ................................................................................................... 232
10.6.1.1. Analyzer Status LED’s............................................................................................ 233
10.6.1.2. Keyboard ............................................................................................................. 233
10.6.1.3. Display ................................................................................................................ 233
10.6.1.4. Keyboard/Display Interface Electronics..................................................................... 234
10.7. Software Operation ............................................................................................................ 235
10.7.1. Adaptive Filter ............................................................................................................ 236
10.7.2. Calibration - Slope and Offset........................................................................................ 236
10.7.3. Temperature and Pressure Compensation (TPC) Feature ................................................... 237
10.7.4. Internal Data Acquisition System (iDAS) ......................................................................... 238
11. TROUBLESHOOTING & REPAIR ...............................................................................................239
11.1. General Troubleshooting ..................................................................................................... 239
11.1.1. Fault Diagnosis with Warning Messages .......................................................................... 240
11.1.2. Fault Diagnosis with Test Functions................................................................................ 242
11.1.3. Using the Diagnostic Signal I/O Function......................................................................... 243
11.1.4. Status LEDs................................................................................................................ 244
11.1.4.1. Motherboard Status Indicator (Watchdog) ................................................................ 244
11.1.4.2. CPU Status Indicator ............................................................................................. 245
11.1.4.3. Relay Board Status LEDs ........................................................................................ 245
11.2. Gas Flow Problems............................................................................................................. 246
11.2.1. Zero or Low Sample Flow ............................................................................................. 247
11.2.2. High Flow................................................................................................................... 247
11.3. Calibration Problems .......................................................................................................... 247
11.3.1. Negative Concentrations............................................................................................... 247
11.3.2. No Response .............................................................................................................. 248
11.3.3. Unstable Zero and Span ............................................................................................... 248
11.3.4. Inability to Span - No SPAN Key .................................................................................... 248
11.3.5. Inability to Zero - No ZERO Key..................................................................................... 249
11.3.6. Non-Linear Response ................................................................................................... 249
11.3.7. Discrepancy Between Analog Output and Display ............................................................. 250
11.4. Other Performance Problems ............................................................................................... 250
11.4.1. Excessive noise ........................................................................................................... 250
11.4.2. Slow Response............................................................................................................ 250
11.4.3. The Analyzer Doesn’t Appear on the LAN or Internet ........................................................ 251
11.5. Subsystem Checkout.......................................................................................................... 251
11.5.1. Detailed Pressure Leak Check........................................................................................ 252
11.5.2. Performing a Sample Flow Check ................................................................................... 252
11.5.3. AC Power Configuration................................................................................................ 253
11.5.4. DC Power Supply......................................................................................................... 253
11.5.5. I 2 C Bus ...................................................................................................................... 254
11.5.6. Keyboard / Display Interface......................................................................................... 254
11.5.7. Relay Board................................................................................................................ 255
11.5.8. Motherboard............................................................................................................... 255
11.5.8.1. A/D functions ....................................................................................................... 255
11.5.8.2. Analog Output Voltages ......................................................................................... 256
11.5.8.3. Status Outputs ..................................................................................................... 256
11.5.8.4. Control Inputs ...................................................................................................... 257