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11265191.10 08/2019 EN/DE
Differential pressure gauge models 712.15.160, 732.15.160, optional for hazardous areas
EN
5. Faults
Faults
Causes
Measures
No input pressure.
Pressure compensating valve open. Close the pressure
compensating valve.
No output signal.
Insufficient supply voltage or cable
break.
Check voltage supply and
cables.
Wrong pin assignment.
Check pin assignment.
Defective transmitter electronics due
to overvoltage.
Replace instrument.
Constant output signal
upon change in pressure
Pressure port blocked at process
connection.
Clean pressure port at process
connection.
Supply voltage connected the wrong
way. (I = ca. 4.5 mA).
Check pin assignment.
Defective transmitter electronics
Replace instrument.
Too high, constant output
signal upon change in
pressure.
Bridge on terminals 5 and 6 not
removed (I = approx. 9.5 mA).
Remove the terminal bridge.
Set the zero point.
Defective transmitter electronics due
to overvoltage.
Replace instrument.
Signal span too small.
Insufficient supply voltage.
Check voltage supply and
cables.
Load too high.
Maintain permissible load.
Zero point maladjusted.
Set the zero point.
Zero point signal too low or
too high.
Zero point maladjusted.
Set the zero point.
Mechanical overload
Replace instrument.
For the replacement of the instrument chapters 7 “Dismounting, return and disposal” and 4
“Commissioning, operation” must be observed.
6. Maintenance and cleaning
6.1 Maintenance
The instruments are maintenance-free.
The indicator and switching function should be checked once or twice every year. For this the
instrument must be disconnected from the process to check with a pressure testing device.
5. Faults / 6. Maintenance and cleaning
