Installation / Connection - Elster RGV Mode D'emploi

7. Installation / Connection

Warning! Never clean the plastic hood of the counter with
a dry cloth owing to the risk of explosion resulting from
electrostatic discharge! Please only ever use an adequately
moistened cloth!
Before installation please ensure:
– that the protective caps and/or plastic sheeting is or are removed,
– that the meter and accessories have been inspected for transport damage,
– that the pistons rotate easily in the measuring chamber (e.g. by blowing on them),
– that the accessories have been checked for completeness (e.g. plug connectors, oil for
initial filling).
You will require the following items for installation:
Type RVG and Type RVG-ST with flange:
– Suitable seals/gaskets for the relevant gases.
– For installing the meter in the pipe, use 8.8 screws in
accordance with DIN 931. The screw length must be
selected so that a thread reach of C mm (Table 2) into the
meter is guaranteed (Figure 3). The maximum tightening
torque is 110 Nm.
Screw size
DN PN 10/16
25 M12
32 M16
40 M16
50 M16
80 M16
100 M16
150 M20
Table 2: Flange screws
10
Screws per meter
ANSI 150 PN 10/16
M12 8
M12 8
M12 8
M16 8
M16 16
M16 16
M20 16
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Elster-Instromet
Thread reach
ANSI 150 PN 10/16
8 14 – 20
8 16 – 22
8 16 – 22
8 16 – 22
8 16 – 22
16 16 – 22
16 20 – 28
Figure 3
C mm
ANSI 150
14 – 20
14 – 20
14 – 20
16 – 22
16 – 22
16 – 22
20 – 28