Personnel Qualification; Skilled Personnel - WIKA PSD-4-ECO Mode D'emploi

3. Safety
Pressure surges below the nominal pressure and shorter than 1 ms can cause measuring errors.
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For applications where pressure spikes can occur, the use of a restrictor is recommended. The
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restrictor narrows the pressure port to 0.6 mm and thus increases the resistance against pressure
spikes.
With media that could block the pressure port (e.g. through particles), it is recommended to use a
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wider pressure port of 6 or 12 mm.
There must be no build-up of atomic hydrogen in the pressure port of the pressure switch.
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3.3 Personnel qualification

Skilled personnel

Skilled personnel, authorised by the operator, are understood to be personnel who, based on their technical training,
knowledge of measurement and control technology and on their experience and knowledge of country-specific regula-
tions, current standards and directives, are capable of carrying out the work described and independently recognising
potential hazards.
3.4 Use of accessories and spare parts
It is recommended to use original accessories and original spare parts from WIKA. Using accessories and spare parts
from third parties can lead to damage to the instrument or accidents, due to quality defects or other reasons.
WIKA assumes no liability for damage or accidents caused by a malfunction or unsuitability of accessories and spare
parts which do not originate from WIKA (e.g. non-compliance with the IP ingress protection of connectors). No warranty
claims can be made which arise due to a malfunction or unsuitability of any accessory or spare part from a third party.
WIKA operating instructions, model PSD-4-ECO
EN
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