Thommen HM30 - Warning Messages and Faults

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7 Warning messages and faults
Fault/Indication Possible cause Remedy
_ _ _ _ _
CHANGE BATTERY
No change in
measured value
Does not switch on
Instrument inaccurate
The measuring range has
been exceeded or fallen below
or the corresponding sensor is
not connected
Battery voltage too low
Defective sensor
No power supply
Recalibration was not
sufficiently accurate
Natural aging of the pressure
sensor
Set the permissible measured value
or
connect sensor
Install new battery
Send instrument for repair
Install new battery where necessary
Where necessary plug mains
supply unit in correctly
Battery possibly not correctly
installed
Bend battery contacts where
necessary
Repeat recalibration
Have instrument recalibrated