WIKA MH-4 Manual De Instrucciones página 9

4. Mounting / 5. Faults
with UL1310/UL1585 (NEC or CEC). The voltage supply must be suitable for operation above 2,000 m should the
pressure sensor be used at this altitude.
Shielding and grounding
Include the pressure sensor in the equipotential bonding via the process connection or connect it to ground (earth).
Pin assignment
→ For pin assignments, see product label
5. Faults
CAUTION!
Physical injuries and damage to property and the environment
If faults cannot be eliminated by means of the listed measures, the pressure sensor must be taken out
of operation immediately.
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Ensure that pressure or signal is no longer present and protect against accidental commissioning.
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Contact the manufacturer.
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If a return is needed, please follow the instructions given in chapter 7.2 "Return".
For contact details, see chapter 1 "General information" or the back page of the operating instructions.
In the event of any faults, first check whether the pressure sensor is mounted correctly, mechanically and electrically.
Faults
Plastic has faded
No output signal
WIKA operating instructions pressure sensor, model MH-4
Causes
UV irradiation
Cable break
No/wrong power supply
Measures
No measures required
Discolouration is harmless
Check the continuity, and if necessary
exchange the cable
Rectify the power supply
EN
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