Faults - WIKA Cryo Gauge 712.15.100 Betriebsanleitung

4. Commissioning, operation / 5. Faults
Switch off supply voltage and display unit.
■
Carry out the "Dismounting cable socket" described above.
■
Remove the stranded wire for bridging terminals 5 and 6 from the socket insert.
■
Carry out the "Mounting cable socket" described above.
■
The electrical output signal will once more match the display of the mechanical pointer.
Close all valves opened for the zero point setting again.

5. Faults

Faults
No input pressure.
No output signal.
Constant output signal
upon change in pressure
Too high, constant output
signal upon change in
pressure.
Signal span too small.
Zero point signal too low or
too high.
For the replacement of the instrument chapters 7 "Dismounting, return and disposal" and 4
"Commissioning, operation" must be observed.
Differential pressure gauge models 712.15.100, 732.15.100, optional for hazardous areas
Causes
Pressure compensating valve open.
Insufficient supply voltage or cable
break.
Wrong pin assignment.
Defective transmitter electronics due
to overvoltage.
Pressure port blocked at process
connection.
Supply voltage connected the wrong
way. (I = ca. 4.5 mA).
Defective transmitter electronics
Bridge on terminals 5 and 6 not
removed (I = approx. 9.5 mA).
Defective transmitter electronics due
to overvoltage.
Insufficient supply voltage.
Load too high.
Zero point maladjusted.
Zero point maladjusted.
Mechanical overload
Measures
Close the pressure
compensating valve.
Check voltage supply and
cables.
Check pin assignment.
Replace instrument.
Clean pressure port at process
connection.
Check pin assignment.
Replace instrument.
Remove the terminal bridge.
Set the zero point.
Replace instrument.
Check voltage supply and
cables.
Maintain permissible load.
Set the zero point.
Set the zero point.
Replace instrument.
EN
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