Faults - WIKA SA-11 Manual De Instrucciones

9. Faults

9. Faults
In the event of any faults, first check whether the pressure transmitter is mounted correctly, mechanically and
electrically.
Fault
No output signal
No/wrong output signal
Constant output signal upon
change in pressure
Signal span too small/drops
Signal span varies/inaccurate
Deviating zero point signal
CAUTION!
If faults cannot be eliminated by means of the measures listed above, shut down the pressure transmitter
immediately and secure it from being put back into operation inadvertently. In this case, contact the
manufacturer. If a return is needed, please follow the instructions given in chapter 10.2 "Return".
WIKA operating instructions pressure transmitter, model SA-11
Possible cause
Cable break
No/wrong supply voltage
Wiring error
Mechanical overload caused by overpressure
Mechanical overload caused by overpressure
Diaphragm damaged
Sealing/sealing face damaged/soiled, sealing does
not have a tight fit, threads jammed
EMC interference sources in the environment (e.g.
frequency converter)
Operating temperature too high/low
Instrument not grounded
Strongly fluctuating pressure of the process medium
Operating temperature too high/low
Other mounting position
Overpressure limit exceeded
Measure
Check the continuity
Rectify the supply voltage
Rectify the wiring
Replace instrument
Replace instrument
Replace instrument
Clean the sealing/sealing face, replace
sealing
Shield instrument; shield cable; remove
source of interference
Observe the permissible temperatures
Ground the instrument
Dampening; consulting by the manufac-
turer
Observe the permissible temperatures
Adjust the zero point
Replace instrument
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