Faults - WIKA MH-4 Mode D'emploi

5. Commissioning, operation / 6. Faults
Requirement for shielding and grounding
The pressure sensor must be shielded and grounded in accordance with the grounding
concept of the plant. In accordance with EN 61326-1, in case of outdoor installations, faults
caused by surge voltages must be considered. To protect the instrument, it must be connec-
EN
ted using a shielded cable. The shield of the cable must be connected on at least one side
to ground or a suitable reference potential. Optionally, a suitable external measure can be
taken to ensure protection against surge voltages.
Connecting the instrument
1. Assemble the mating connector or cable outlet.
→ For pin assignment see product label
2 Establish the plug connection.
.

6. Faults

For contact details see chapter 1 "General information" or the back page of
the operating instructions.
12
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.
▶
Ensure that pressure or signal is no longer present and protect against
accidental commissioning.
▶
Contact the manufacturer.
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If a return is needed, please follow the instructions given in chapter 8.2
"Return".
WARNING!
Physical injuries and damage to property and the environment
caused by hazardous media
Upon contact with hazardous media (e.g. oxygen, acetylene, flammable
or toxic substances), harmful media (e.g. corrosive, toxic, carcinogenic,
radioactive), and also with refrigeration plants and compressors, there is a
danger of physical injuries and damage to property and the environment.
▶
Should a failure occur, aggressive media with extremely high tempera-
ture and under high pressure or vacuum may be present at the instru-
ment.
▶
For these media, in addition to all standard regulations, the appropriate
existing codes or regulations must also be followed.
▶
Wear the requisite protective equipment.
WIKA operating instructions pressure sensor, model MH-4