No output
Erroneous output
Erroneous Temperature
Erroneous Temperature
Erroneous Temperature
Erroneous Temperature
Erroneous Temperature
Relays "chatter"
No power to monitor
Wrong output range
Faulty sensor cable
Field of view obstructed
Lens dirty
Wrong emissivity
Wrong signal
Deadband too narrow
Check power supply
Correct Lo/Hi output setting
Verify cable integrity
Remove obstruction
Clean lens (see Section 5.3)
Correct emissivity setting
Correct peak/valley setting
Correct deadband setting
SYMPTOM PROBABLE CAUSE SOLUTION
Thermalert GP Series Operator’s Manual 27
3.0 MAINTENANCE
Our customer service representatives are always at your disposal for ques-
tions regarding application assistance, calibration, repair, and solutions to
specific problems. Our Service Department should be contacted before
returning any equipment to us. In many cases, problems can be solved over
the telephone.
3.1 TROUBLESHOOTING MINOR PROBLEMS
Table 7 lists common symptoms, their causes, and possible solutions. If you
are experiencing a problem that is not listed below, please call our Service
Department. Phone numbers are listed on the Warranty/Copyright page at
the beginning of this manual.
Table 7: Troubleshooting
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