Commissioning, Operation; Mechanical Connection - WIKA switch GAUGE PGS Manual De Instrucciones

6. Commissioning, operation

6. Commissioning, operation

6.1 Mechanical connection

In accordance with the general technical regulations for pressure
GB
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 or the cable terminal box, 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
pressure gauge, it must be protected against being blocked by debris
and dirt.
10
WIKA operating instructions pressure gauge model PGS with reed contacts
Installation with
open-ended spanner
Spanner flats
Sealing face

Sealing in the
thread
