Operating Location; Installation Position, Flow Direction And Wall Clearance - Elster RGV Mode D'emploi

3. Operating Location

If you ...
– wish to mix in odorisation agents or
– use solenoid valves,
please always fit them only downstream of the meter. Otherwise, the device may be
damaged.
The flow through the meter must be free of vibrations / pulsations in order to avoid
measuring errors.
Compliance with the specified operating and ambient conditions as indicated on the type
label is absolutely essential for safe operation of the meter and additional equipment.
The gas may not contain suspended particles > 50 m. In addition, the gas must be dry.
Otherwise, the meter may be damaged.
In the case of new installations, we recommend temporarily installing a coarse filter (cone
strainer with mesh size 250 m) to protect the meter. The strainer should be removed after
approximately 4 to 6 weeks.

4. Installation Position, Flow Direction and Wall Clearance

Type RVG:
Gas can be passed through the Type RVG rotary gas meter both horizontally and vertically.
The counter head can be turned through up to 355° for optimum ease of reading in different
installation/operating positions. If the meter is equipped with oil-level gauge glasses on just
one side, then the meter must be mounted with a gap (
pipe to the wall, in order to facilitate access for maintenance (Figure 1 and Table 1):
Wall
Figure 1: Horizontal flow from left to right and from right to left
8
B + 30 mm) from the centre of the
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Elster-Instromet
Wall