Pressure Test Point - Elster TRZ2 Instruction Manual

Elster-Instromet
– Assign the terminalsonthepluginaccordancewiththepinassignmentontheunit.
Use a screened cable to the external device.
–
Pulse generators for subsequent installation are also available (only if bore holes have been
provided in the housing).
HF pulse generators (Type A1S) can, however, be fitted only by the Customer Service.
Bycontrast,youcanconnecttheplugyourself,asdescribedabove.
Warning! All pulse generators are intrinsically safe and may only be connected to intrinsically
safe circuitswhenusedinpotentially explosive atmospheres. The safety barriers must com-
plywiththerequirementsofignitionprotectionEEx ib IIC(seealsomarkinginAnnexA).
Thedevicemustnotbeinstalledonexternalsourcesofhighorlowtemperatureswhosetem-
peraturewouldresultinahigherorlowerambienttemperatureforthedevicethanthepermitted
ambient temperature range.

8. Pressure Test Point

A straight male coupling in accordance with DIN 2353 is pre-fitted on the meter housing for
measuring the reference pressure.
The pressure test pointismarkedP
inaccordancewithDINEN10305-1(e.g.steelgradeE235)orflexibleElsterpressuretubes.
Important: do not connect the straight male coupling to pipes made of stainless steel or pipes
made of nonferrous materials.
Note:werecommendthatyouuseoriginalParker-Ermetopipeunions.
Functional safety and reliability are ensured only if the material combination of the union compo-
nent and the pipe are intermatched.
WerecommendthatyoucontactourCustomer Serviceforconversionworkandwheninstalling
additional devices.
10
/P and is designed for connection of d = 6 mm steel tubes
m r
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