WIKA A-10 - Manual (Page 22)

22 WIKA operating instructions pressure transmitter model A-10
11218720.10 01/2012 GB/D/F/E
GB
8. Faults
In the event of any faults, first check whether the pressure transmitter is mounted correctly, mechanically
and electrically.
8. Faults
Faults Causes Measures
No output signal Cable break Check the continuity
Deviating zero point signal Overpressure limit exceeded Observe the permissible overpressure
limit
Deviating zero point signal Too high/low working temperature Observe the permissible temperatures
Constant output signal upon
change in pressure
Mechanical overload caused by
overpressure
Replace instrument; if it fails repeatedly,
contact the manufacturer
Signal span varies EMC interference sources in the
environment; for example, frequency
converter
Shield instrument; cable shield; remove
source of interference
Signal span varies/inaccurate Too high/low working temperature Observe the permissible temperatures
Signal span drops/too small Mechanical overload caused by
overpressure
Replace instrument; if it fails repeatedly,
contact the manufacturer
If complaint is unjustified, we will charge you the complaint processing fees.
CAUTION!
If faults cannot be eliminated by means of the measures listed above, shut down the
pressure transmitter immediately, and ensure that pressure and/or signal are no longer
present, and secure the instrument from being put back into operation inadvertently. In this
case, contact the manufacturer. If a return is needed, follow the instructions given in chapter
9.2 "Return".