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5.1.3 Assembly on a wall
5.1.4 Three-way valve
When mounting the pressure sensor, a three-way valve is usually
incorporated in order to test the pressure sensor in an installed condition or
to exchange a faulty sensor without switching off the entire gas pipeline.
The three-way valve available from Elster is constructed as follows:
Prüfen mit
Betriebsdruck
3
Absperrung
45° Stellung
Fig. 9
When mounting the three-way valve, it must be ensured that
the position of the control lever with the corresponding outlets
is checked as the lever can be removed and may be mounted
the wrong way round.
Assembly, Connection and Putting into Operation
Fig. 8
i1 : From the meter: From the pressure
1
2
i2 : To the VC: For the connection of the
i3 : Test connection: Possible to take the
1. Bore four holes in the
positions marked on the wall
(see dimensions in
Fig. 8).
2. Select wall plugs which
correspond to the size of the
screws and insert these in the
boreholes in the wall.
3. To fasten the EK280, four
M5 x 40 mm wood screws
should be used for wall
assembly.
connection of the gas meter.
For diaphragm gas meters, this takes
place on the input side of the meter.
pressure sensor to the volume
corrector.
test pressure or to assert external
pressure on the pressure sensor of
the volume corrector.
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