Pressure Test Points - Honeywell TRZ2 Betriebsanleitung

Honeywell
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.
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