Filter
Top Products
Teledyne API T803 CO2/O2 Analyzer Operation Manual Table of Contents
xi
9.3. Assessing Calibration Quality.....................................................................................................................166
9.4. Calibration of the T803’s Electronic Subsystems .......................................................................................167
9.4.1. Pressure Calibration............................................................................................................................167
9.4.2. Flow Calibration...................................................................................................................................169
10. MAINTENANCE SCHEDULE & PROCEDURES...........................................................173
10.1. Maintenance Schedule .............................................................................................................................173
10.2. Predictive Diagnostics ..............................................................................................................................177
10.3. Maintenance Procedures..........................................................................................................................177
10.3.1. Replacing the Sample Particulate Filter ............................................................................................177
10.3.2. Rebuilding the Sample Pump............................................................................................................178
10.3.3. Performing Leak Checks ...................................................................................................................179
10.3.4. Performing a Sample Flow Check.....................................................................................................180
10.3.5. Cleaning Exterior Surfaces of the T803 ............................................................................................180
11. TROUBLESHOOTING AND SERVICE..........................................................................181
11.1. General Troubleshooting.......................................................................................................................... 181
11.1.1. Fault Diagnosis with WARNING Messages ......................................................................................182
11.1.2. Fault Diagnosis with TEST Functions ...............................................................................................185
11.1.3. DIAG SIGNAL I/O: Using the Diagnostic Signal I/O Function .....................................................186
11.2. Using the Internal Electronic Status LEDs ...............................................................................................188
11.2.1. CPU Status Indicator.........................................................................................................................188
11.2.2. Relay PCA Status Indicators .............................................................................................................188
11.3. Gas Flow Problems ..................................................................................................................................190
11.3.1. T803 Internal Gas Flow Diagrams.....................................................................................................190
11.3.2. Typical Sample Gas Flow Problems .................................................................................................191
11.4. Calibration Problems ................................................................................................................................192
11.4.1. Miscalibrated .....................................................................................................................................192
11.4.2. Non-Repeatable Zero and Span .......................................................................................................193
11.4.3. Inability to Span – No SPAN Button..................................................................................................193
11.4.4. Inability to Zero – No ZERO Button...................................................................................................193
11.5. Other Performance Problems...................................................................................................................193
11.5.1. Temperature Problems......................................................................................................................194
11.6. Subsystem Checkout................................................................................................................................194
11.6.1. AC Mains Configuration ....................................................................................................................194
11.6.2. DC Power Supply ..............................................................................................................................194
11.6.3. I
2
C Bus...............................................................................................................................................195
11.6.4. Touchscreen Interface.......................................................................................................................195
11.6.5. LCD Display Module.......................................................................................................................... 196
11.6.6. Relay Board.......................................................................................................................................196
11.6.7. Sensor Assembly...............................................................................................................................196
11.6.8. Pressure/Flow Sensor Assembly ......................................................................................................196
11.6.9. Motherboard ......................................................................................................................................198
11.6.10. CPU .................................................................................................................................................199
11.6.11. RS-232 Communications ................................................................................................................200
11.6.12. CO
2
Sensor STATUS LED’s............................................................................................................201
11.7. Repair Procedures....................................................................................................................................201
11.7.1. Repairing Sample Flow Control Assembly........................................................................................201
11.7.2. Disk-On-Module Replacement Procedure ........................................................................................202
11.8. FRequently Asked Questions (FAQ’s)......................................................................................................203
11.9. Technical Assistance................................................................................................................................204
12. PRINCIPLES OF OPERATION ......................................................................................205
12.1. O
2
Sensor .................................................................................................................................................205
12.1.1. Magnetic Properties of O
2
Gas..........................................................................................................205
12.1.2. Paramagnetic Measurement of O
2
....................................................................................................205
12.2. CO
2
Sensor ...............................................................................................................................................207
12.2.1. NDIR Measurement of CO
2
...............................................................................................................207
07276B DCN6418