5. Commissioning, operation
Sealing variants
Parallel threads
Seal the sealing face with flat gasket, lens-type
sealing ring or WIKA profile sealing.
Tapered threads
Wrap threads with sealing material
(e.g. PTFE tape).
The sealing and instrument must be checked at regular intervals by the operator.
5.2 Electrical mounting
WARNING!
The instrument shield does not act as a protective conductor for protection of personnel, rather as a
functional ground in order to shield the instrument from electromagnetic fields.
5.2.1 Connection assembly (model GD-20-D)
Use a cable consisting of shielded twisted pair data lines with suitable characteristics for the particular operating
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conditions.
Select a cable diameter that matches the cable bushing of the connector. Make sure that the cable gland of the
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mounted plug has a tight fit and that the seals are present and undamaged. Tighten the threaded connection and
check that the seal is correctly seated, in order to ensure the ingress protection.
Make sure that no moisture enters at the cable end.
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WIKA operating instructions gas density sensor, model GD-20
per EN 837
per ISO 1179-2 (formerly DIN 3852-E)
NPT, R and PT
EN
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