Teledyne 8800T - Trace moisture analyzer - transmitter - Manual (Page 14)

8800T User’s Manual
page 10
Troubleshooting unexpected readings (table spans 2 pages)
For non-sensor related problems (e.g. no reading on instru-
ment) refer to section 3.5
Symptom Possible Cause
Reading is not
changing
Condensation in sample system.
Slow Response
1. Water vapor in the system.
2. Flow rate too low.
3. Sample pipe too large and/or too long.
4. Unsuitable sample pipe material.
5. Leaks
6. Hygroscopic materials in sample system
Dry Reading SpanCheck™ wrongly set, or faulty sensor.
Wet Reading
Leak in system or use of unsuitable pipe.
Comparison of readings with manual cooled-
mirror instrument.
Display Shows
6$7
Prolonged exposure to wet gas.
Display Shows
6+5
1. Instrument Failure
2.Short circuited sensor.
Display Shows
1. Instrument failure.
231
2. Open circuit on sensor .