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Honeywell
73024521a
© Elster GmbH | All rights reserved. Subject to modification
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If no temperature test points are provided in the meter housing, external
temperature measurements must be taken in the pipe downstream of the
gas meter at a distance of up to 3 x DN, but max. 600 mm away.
NOTE!
In outdoor measuring systems, the result of measurement may
be influenced by the ambient temperature.
Insulate measuring elements outside the pipe adequately to
prevent ambient temperature influences.
Fill the thermowell(s) with a heat-conductive fluid or paste to
achieve optimum thermal conduction.
2.4 Pressure test points
A straight male coupling which complies with DIN 2353 is provided on the
meter housing to act as a pressure test point, for example to connect a
pressure sensor. It is marked pm/pr and is designed for connecting Ø 6 mm
steel tubes to DIN EN 10305-1 (e.g. steel grade E235) or flexible pressure
tubes from Honeywell.
CAUTION!
Danger to functional safety!
Functional safety and reliability are ensured only if the material
combination of the union component and the pipe are
intermatched.
The straight male coupling must not be connected to pipes
made of stainless steel or pipes made of non-ferrous materials.
NOTE!
Only use original Parker-Ermeto pipe unions.
We recommend that you contact our local Honeywell Customer
Service Centre for conversion work and when installing
additional devices.
Содержание Q75
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