Wika AC-1 Manuel d'utilisateur télécharger pdf (Page 21)

21WIKA operating instructions pressure transmitter model AC-1

14026285.01 11/2012 GB/D/F/E

8. Faults

Faults Causes Measures

No output signal No/wrong power supply

Cable break

Correct the power supply

Check the continuity

Signal span too small Power supply too high/low

Mechanical overload caused by

overpressure

Correct the power supply

Replace instrument

Signal span drops Moisture has entered Fit the cable correctly

Signal span varies EMC interference sources in the

environment

Instrument not grounded

Strongly varying power supply

Strongly varying pressure of the

process medium

Shield instrument; cable shield; remove

source of interference

Ground the instrument

Stabilise the power supply

Damping, consulting by the manufacturer

If complaint is unjustied, the complaint processing fees will be charged.

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, please follow the instructions given in

chapter 9.2 "Return".

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Wika AC-1 Manuel d'utilisateur Page 21