Endress+Hauser Nivotester FTC325, Instruction Manual

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Hauser 33
Fault Reason Remedy
Does not switch No power
(green LED does not light up) Check power
Nivotester defect Replace Nivotester
Contacts welded together
(after short-circuit) Replace FTC325;
connect a fuse into contactor circuit
Measuring transmitter defective Replace measuring transmitter
Switches
incorrectly Incorrect setting of change-over switch for
limit signal in FTC325 Correctly set change-over switch behind
front panel
Permanent alarm
signal Device configuration changed unintentionally Restore original condition
Interrupt or short-circuit line to measuring
transmitter Check line
Measuring transmitter electronics defective Replace measuring transmitter electronics
Nivotester defective Replace Nivotester
Fault indicator
flashes Probe circuit
(probe, electronic insert or two-wire cable) Check probe for grounding
(Rnom > 200 kOhm)
Replace electronic insert and recalibrate
After the LED goes out, recalibrate and
check function
Calibration not
possible when
probe is covered The measuring range of the electronic insert
is exceeded in the covered condition Calibrate with uncovered probe
Check probe for grounding
en - Trouble-shooting
Note!
A new calibration is necessary:
- if the electronic insert of the
probe was exchanged.