Diagnosis And Troubleshooting; Response Of Fc-21 On Error Or Alarm - Omega FC-21 User Manual

13. Diagnosis and Troubleshooting

13.1 Response of FC-21 on Error or Alarm:

Error and warning indications which occur during operation are indicated
in the RUN mode alternately with the measured values. The FC-21
Flow Computer has three types of error:
TYPE OF ERROR
Sensor/Process Alarms
Self Test Errors
System Alarms
Some alarms are self clearing. Other alarms require the user to
acknowledge and clear the alarm.
acknowledged and clear alarms. Alarms may reassert themselves if
the alarm condition is still present.
NOTE: A historical error alarm log is available in the "Test Mode".
The following descriptions suggest possible causes and corrective
actions for each alarm message.
65
FC-21 Flow Computer
DESCRIPTION
Errors detected due to sensor
failure or process alarm
conditions
Errors detected during self test.
Errors detected due to system
failure
Press the ENTER button to