Elster Instromet RABO, Instruction Manual

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Elster-Instromet
10
73021678d © Elster GmbH • All rights reserved • Subject to technical modification
6. Installation Position, Flow Direction
Gas can be fed through the RABO rotary gas meter both horizontally and vertically. The
piston shafts and digit rollers on the index must always be aligned horizontally .
The index can be turned through up to 355° for optimum ease of reading in different
installation/operating positions.
Warning! Never clean the plastic hood of the index with a dry
cloth
owing to
the risk of explosion resulting from electrostatic
discharge! Please only ever use an adequately water - 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:
- Suitable seals/gaskets for the relevant gases.
- For installing the meter in the pipe, use screws
in accordance with DIN 931. The screw length
must be selected so that a thread reach of
16 - 22 mm (M12 - M16) or 20 - 28 mm (M20)
into the meter is guaranteed. The recommended
tightening torque is defined in the table and must
not exceed 50 Nm for M12 and 100 Nm for M16
and M20.
7. Installation / Connection