Maintenance
Modline 5
Rev. L6 Feb 2017 123
Error Codes for Sensor diagnostic information are summarized as follows:
Dirty Window Detection (or attenuation alarm if using a 5R series with the Attenuation
Alarm turned on)
Sensor internal Case temperature too high
Sensor internal case temperature too low
Sensor failure: FAIL may be seen on the Sensor TEMP display
Analog Output Current loop malfunction (open circuit)
Dirty Window Detection malfunction
pINV is only displayed when the Invalid Alarm (iALM) function is set to ON and Peak
Picker or Track and Hold is On. This condition becomes an alarm and triggers the Alarm
relay and the ALARM word on the Sensor rear panel.
Temperature displayed is Peak Picked or Hold Mode Temperature values from prior
valid measurement conditions.
Environmental conditions can cause Sensor errors. High or low ambient
temperatures can cause Sensor case temperature too high or too low errors. Dirty lens
conditions can be avoided using air purging.
Investigate all alarms indicated by the ALARM word indicator. Temperature readings
on rear panel display, at Analog Output or from RS-485 Communications may be
inaccurate with Error Codes X101 through X109 alarms.
Ratio Temperature measurement conditions are invalid with INV and pINV alarms.
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