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6. Commissioning, operation
6. Commissioning, operation
Mechanical connection
GB
In accordance with the general technical regulations for pressure
gauges (e.g. EN 837-2 "Selection and installation recommendations for
pressure gauges").
When screwing gauges in, the force required for this must not be
applied through the case, but rather through the spanner flats (using a
suitable tool) provided for this purpose on the square shaft of standard
connections.
Correct sealing of pressure gauge connections with parallel threads
must be made using suitable sealing rings, sealing washers or WIKA
profile seals. The sealing of tapered threads (e.g. NPT threads) is made
by providing the thread with additional sealing material such as, for
example, PTFE tape (EN 837-2).
The torque depends on the seal used. Connecting the gauge using
a clamp socket or a union nut is recommended, so that it is easier to
orientate the gauge correctly. When a blow-out device is fitted to a
12
Installation with
spanner
Spanner flats
Sealing face
WIKA operating instructions pressure gauge, model 2 per ATEX
Sealing in
the thread
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