PN 9000-280-VE, Rev B
Alarm Condition / Description / Corrective Action
Cell Temperature Control
A critical over-temperature condition has occurred.
Trigger Conditions:
• Shorted, open, or faulty Thermocouple.
• Failed Temperature Control Circuit.
Corrective Action:
Take appropriate safety precautions, open the Analyzer door, and:
• Check the associated cables for proper connections and inspect them for damage (cuts, nicks, burn marks,
etc.).
• Check the Thermocouple for a short or open circuit. Replace the Thermocouple if necessary.
Contact AMETEK
to verify operation before removing the Thermocouple.
After this check has been made, cycle the analyzer AC power Off-On; this will reset the analyzer and clear this
alarm.
Cell Over Temp
Cell temperature is 4 degrees or higher above the setpoint.
Trigger Conditions:
• Faulty Thermocouple.
• Failed Temperature Control Circuit.
Corrective Action:
Take appropriate safety precautions, open the Analyzer door, and:
• Check the associated cables for proper connections and inspect them for damage (cuts, nicks, burn marks,
etc.).
• Check the Cell Thermocouple for a short or open circuit. Replace the Thermocouple if necessary.
Contact AMETEK to verify operation before removing the Thermocouple.
Cell Under Temp
Cell temperature is 4 degrees or lower below the setpoint.
Trigger Conditions:
• This condition may be triggered upon analyzer power-up while the Cell is warming up to its normal operating
temperature, but will clear after the Cell has properly warmed up to its normal operating temperature.
• Faulty Heater connection.
• Faulty Thermocouple connection.
• Faulty Heater.
• Faulty Thermocouple.
• Failed Temperature Control Circuit.
Corrective Action:
Take appropriate safety precautions, open the Analyzer door, and:
• Check the Heater and Thermocouple cables for proper connections and inspect them for damage (cuts, nicks,
burn marks, etc.).
• Check the Cell Thermocouple for a short or open circuit. Replace the Thermocouple if necessary.
Contact AMETEK to verify operation before removing the Thermocouple.
• Check the Heater for a short or open circuit. Replace the Heater if necessary.
Contact AMETEK to verify opera-
tion before removing the Heater.
3-24 | Thermox
®
WDG-V UOP ATEX-IECEx Analyzer
