Installation And Commissioning - WIKA PGT23.100 Betriebsanleitung

4. Installation instructions / 5. Installation and commissioning
Pressure test connection
The pressure test connection, with a sufficiently large bore (≥ 6 mm diameter),
should be arranged, as far as possible, over a shut-off device, in a position where
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the accuracy of the reading will not be affected by the flow of the media being
measured.
The piping between the pressure test connection and the pressure instrument
should have an inner diameter large enough to avoid blockages or delays in
pressure transmission. Also, it should not have any sharp bends. It is recommend-
ed that it is mounted with a continuous incline of approx. 1:15.
Piping
The piping should be arranged and fitted so that it can withstand the stresses
caused by expansion, vibration and the influence of heat. When the media is
gaseous, a water drain point should be provided at the lowest point. For liquid
pressure media, an air bleed should be provided at the highest point.

5. Installation and commissioning

The correct sealing of pressure connections should be achieved by means of
suitable sealing rings, sealing washers or WIKA profile seals.
We recommend connection by means of a union nut or a LH-RH adjusting nut in
order to simplify correct orientation of the gauge. When mounting them or remov-
ing them, the pressure gauges must not be tightened using the housing, but only
on the spanner flats on the stem!
Installation using
a spanner
If the pressure transmitter is positioned lower than the pressure test connection,
the tailpipe should be thoroughly cleaned prior to fitting the transmitter.
For technical reasons, it is necessary to ventilate liquid-filled pressure gauges
after installation. See the relevant label on the pressure gauge.
12 WIKA Operating Instructions intelliGAUGE family