Wika A-10 Uživatelský manuál stáhnout pdf (Strana 22)

22 WIKA operating instructions pressure transmitter model A-10

11218720.10 01/2012 GB/D/F/E

8. Faults

In the event of any faults, rst 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 unjustied, 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".

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Wika A-10 Uživatelský manuál Strana 22