6-4 | Thermox CEM/Humox Analyzer
Error Messages
Error messages on the control unit display indicate problems with the operation
of the analyzer. Use this section to see the types of problems your error message
indicates, then go to the “Diagnostic Checks” section at the end of this chapter for
help on how to perform diagnostic checks to pinpoint the problem area.
You should always perform the easiest checks first; only perform the
more difficult checks if the easiest checks don’t locate the problem.
Cell is Over Temp (Wet or Dry)
This error message indicates that the wet or dry sensor temperature is 30 degrees
Celsius or more over its correct operating temperature. The software shuts off the
furnace until the temperature returns to a normal operating range.
If this message soon goes away, it indicates that the temperature has returned to an
acceptable range. If there is a problem with the sensor temperature control system,
you will see another error message after this message appears.
Excessive Cal Error
If a primary Calibration cannot correct the sensor temperature within the software’s
allowable limits, this message is displayed to indicate the primary Calibration has
failed. This message could indicate one of the following problems:
Calibration gas setup problem
Process pressure incorrectly entered
Failed cell
Leak or plug in plumbing
NOTE
Summary of Contents for CEM/Humox
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