Error Messages - Ametek Thermox CG1000 User Manual

Error Messages

Error messages on the analyzer display indicate problems with the opera-
tion of the analyzer. Identify the type of problem indicated by the error
message and go to "Diagnostic Checks" at the end of this chapter for help
on how to pinpoint the problem. 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
When the temperature has returned to an acceptable range, the message clears. If there is a problem with the sensor
temperature control system, another error message will appear after this message.
Excessive Cal Error
Flow Cal Required
Memory is Corrupted
If you see this message, you should reset the control unit to the values required for your application, including Setup
Key, Calibrate Key, Alarm Key and Analog Range Key settings. Be sure to reselect the carrier gas carrying the
sample (Setup Key/Carrier Gas) and calibrate the flow sensor.
Span Gas Range
Error
The sensor temperature is 30°C or more over correct operating
temperature. The software shuts off the furnace until the temperature
returns to normal operating range.
The Primary Calibration has failed because it cannot correct the sen-
sor temperature to within the software's allowable limits.
Possible reasons for failure are:
- Calibration gas setup problem
- Incorrect flow rates between calibration gases
- Failed pressure sensor
- Failed cell (primary calibration should be run at this time)
- Leak or plug in plumbing
- Cell lead wires polarity reversed
- Flow sensor not calibrated
- Wrong carrier gas selected
This message only appears when the EEPROM has been erased.
If it appears at any other time, it indicates that the flow sensor data
or other programming information is corrupt. Erase the EEPROM to
restore the factory setting. Recalibrate the flow sensor as in the "Cal
Flow Sensor" rpocedure in Chapter 4.
The control unit's internal EEPROM memory has been corrupted or a
significantly new version of software has been installed in the control
unit. Under these conditions, the software will reprogram the EE-
PROM with factory defaults. Clear this message by setting or reading
any user-programmable value. This message will not clear by remov-
ing and then restoring power to the unit.
Calibration span gas does not read within the software's allowable
limits. This error causes calibration of the system to be aborted.
Possible reasons for failure are:
- Calibration gas setup problem
- Incorrect flow rates between calibration gases
- Calibration gas value incorrectly entered
- Failed cell (primary calibration should be run at this time)
- Leak or plug in plumbing
Maintenance and Troubleshooting
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