Pressure Test Point; Temperature Test Points - Elster RABO Series Instruction Manual

13. Pressure Test Point

A straight male coupling in accordance with DIN 2353 is pre-fi tted on the meter housing
for connection of a pressure sensor for instance.
The pressure test point is marked p
steel tube in accordance with DIN EN 10305-1 (e.g. steel grade E 235).
Important: Do not connect the straight male coupling to pipes made of stainless
steel or pipes made of nonferrous materials.
Note: We recommend that you use original Parker-Ermeto pipe unions only.
Functional safety and reliability are ensured only if the material combination of the
union component and the pipe are matched. We recommend that you contact our
Elster-Instromet Customer Service (Tel. +49 (0)6134-605-0 /-346) for conversion
work and when installing additional devices.

14. Temperature Test Points

You can use a maximum of two temperature sensors
for measuring the gas temperature in the meter
housing.
Note that temperature measurement on measuring
systems in the open air may be infl uenced by the
ambient temperature. For this reason, the metering
elements outside the pipe should be adequately
insulated against ambient temperature infl uences. In
order to achieve optimum thermal conduction, also fi ll the thermowell(s) with a heat-
conductive fl uid or paste.
If no temperature test points in the meter housing are planned, measure the
temperature in the pipe upstream of the rotary gas meter at a distance of up to
3 x DN.
16
and is designed for connection of d = 6 mm
m
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Elster-Instromet