49WIKA operating instructions pressure transmitter, model IS-3
MM/YYYY country code based on 14095850.02 12/2014 EN/CN
EN
Faults Causes Measures
Constant output signal upon change in
pressure
Mechanical overload caused by overpres-
sure
Replace instrument; if it fails repeatedly,
contact the manufacturer
Wrong power supply or current pulse Replace instrument
No output signal No or wrong power supply, current pulse Rectify the power supply
Cable break Check the connection cables for continuity
No or wrong output signal Wiring error Rectify the wiring
Deviating output signal Span maladjusted Readjust span and use suitable reference
1)
Deviating zero point signal Overpressure limit exceeded Readjust zero point
1)
Observe overpressure limit
Damage at the process connection Replace instrument
Signal span drops Damage at the process connection Replace instrument; if it fails repeatedly,
contact the manufacturer
Sealing is damaged or soiled If soiled, clean the sealing and the measur-
ing point. If damaged, replace the sealing.
Sealing does not have a tight t Remove the instrument and seal correctly
Threads jammed Mount the instrument correctly
Signal span too small Mechanical overload caused by overpres-
sure
Readjust the instrument
1)
Wrong power supply Rectify the power supply
Signal span varies Strongly varying pressure of the medium Damping; consulting by the manufacturer
1) After the adjustment, check that the system is functioning correctly. If the error still persists, replace the instrument or send it for repair (see chapter 10.2 “Return”).
CAUTION!
If faults cannot be eliminated by means of the measures listed above, shut down the instrument immedi-
ately, 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 10.2 “Return”.
9. Faults
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