Wika D-11-7 Uživatelský manuál stáhnout pdf (Strana 27)

27WIKA operating instructions pressure transmitter model D-1x-7

2478159.05 12/2011 GB/D/F/E

8. Faults

In the event of any faults, rst check whether the pressure transmitter is mounted correctly, mechanically

and electrically.

Faults Causes Measures

No output signal Cable break Check the continuity

Deviating zero point signal Overpressure safety exceeded Observe the permissible overload 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 repeat-

edly, contact the manufacturer

Signal span too small Mechanical overload caused by

overpressure

Replace instrument; if it fails repeat-

edly, 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 Signal span drops / too small Contact manufacturer and replace

instrument

If complaint is unjustied, we will charge you the complaint processing fees.

CAUTION!

If deciencies cannot be eliminated by means of the measures listed above, shut down the

instrument 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 D-11-7 Uživatelský manuál Strana 27