WIKA OT-1 - Manual (Page 13)

13 WIKA operating instructions OEM pressure transmitter, model OT-1
2127027.02 09/2013 GB/D/F/E
GB
8. Faults
8. Faults
In the event of any faults, first 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 limit exceeded Observe the permissible overpressure safety (see
chapter 3 “Specifications”)
Deviating zero point signal Operating temperature too high/low Observe the permissible temperatures (see chapter
3 “Specifications”)
Constant output signal upon change
in pressure
Mechanical overload caused by
overpressure
Replace pressure transmitter; if it fails repeatedly,
contact the manufacturer
Signal span too small Mechanical overload caused by
overpressure
Replace pressure transmitter; if it fails repeatedly,
contact the manufacturer
Signal span varies EMC interference sources in the environ-
ment; for example, frequency converter
Shield the pressure transmitter; cable shield; remove
source of interference
Signal span varies/inaccurate Operating temperature too high/low Observe the permissible temperatures (see chapter
3 “Specifications”)
Signal span drops/too small Signal span drops/too small Contact manufacturer and replace pressure
transmitter
If complaint is unjustified, we will charge you the complaint processing fees.
CAUTION!
If faults 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".