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10. Trouble shooting
Please verify in advance if pressure is being applied (valves/ ball valve etc. open) and if the right
voltage supply and the right type of wiring (2-wire/ 3-wire) has been chosen?
Failure
No output signal
No/False output signal
Abnormal output signal
Output signal unchanged after change
in pressure
Signal span too small
Signal span drops off
Signal span erratic
In case of unjustified reclamation we charge the reclamation handling expenses.
*)
Make sure that after the setting the unit is working properly. In case the error continues to exist send in the instrument for reparation (or
replace the unit).
14
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi SL-1
Possible cause
No/incorrect voltage supply or current
spike
Cable break
Incorrectly wired (e.g. Connected as
2-wire instead of 3-wire system)
Span incorrectly adjusted
Zero point set wrongly
Mechanical overload through overpres-
sure
Wrong supply voltage or current spike
Power supply too high/too low
Moisture present (e.g. at the cable tail)
Electromagnetic interference source in
the vicinity, e.g. inverter drive
Instrument not grounded
Strong fluctuations in the power supply
Procedure
Adjust the voltage supply to correspond
with the Operating Instructions *)
Check connections and cable
Follow pin assignment (see Instrument
Label / Operating Instructions)
Use appropriate reference
Use correct calibration equipment (at
least 3x the accuracy of the quoted
accuracy)
Replace instrument; if failure reoccurs,
consult the manufacturer *)
Replace instrument
Correct the power supply in line with the
Operating Instructions
Install the cable correctly
Shield the device; shield the cables;
remove the interference source.
Ground instrument
Stabilise the power supply; smooth it
(i.e.; remove interferences)
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