Commissioning, Operation - WIKA 632.50.100 Manual De Instrucciones

6. Commissioning, operation

6. Commissioning, operation
Mechanical connection
In accordance with the general technical regulations for pressure gauges (i.e.
„
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.
Installation with
spanner
Correct sealing of pressure gauge connections with parallel threads
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).
Spanner flats
Sealing face
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.
Requirements for the installation point
If the measuring point is not adequately stable a measuring instrument support
such as a bracket or flange should be used for fastening (and possibly via a
flexible capillary line). If the pressure gauge is exposed to vibration or pulsating
pressure or both, then a liquid filled pressure gauge may provide considerably
better performance and readability. Instruments should be protected against
coarse dirt and wide fluctuations in ambient temperature.
WIKA operating instructions pressure gauge model 6 per ATEX

Sealing by
the thread

GB
must be

,

9