Elster TRZ2 - Temperature Test Point Specifications

Elster-Instromet
©ElsterGmbH·Allrightsreserved·Subjecttotechnicalmodication 11
9. Temperature Test Points
Youcanuseamaximumoftwotemperature sensors for meas-
uring the gas temperature in the meter housing for the meter
sizes listed in the table below (quantometers cannot be tted
withthermowellsinthemeterhousing;onTRZ2thermowellsare
optionaluptonominaldiameterDN150):
Max.
sensor
dia.
TRZ2
DN
Housing
material
PN10/16
EBL
PN25/40 Class
150
Class
300
Class
600
6 mm
50
GGG — — — — —
ST — — — — —
80
GGG 45 (2x) — 45 (2x) — —
ST 45 (2x) 45 (1x) 45 (2x) 45 (1x) 45 (1x)
80/100
GGG 58 (2x) — 58 (2x) — —
ST 58 (2x) 58 (1x) 58 (2x) 58 (1x) 58 (1x)
100
GGG 50 (2x) — 50 (2x) — —
ST 50 (2x) 50 (1x) 50 (2x) 50 (1x) 50 (1x)
100/150
GGG 67 (2x) — 67 (2x) — 67 (2x)
ST 67 (2x) 67 (2x) 67 (2x) 67 (2x) 67 (2x)
150
GGG 50 (2x) — 50 (2x) — —
ST 50 (2x) 50 (2x) 50 (2x) 50 (2x) 50 (2x)
GGG=Spheroidalgraphitecastiron;ST=Steel
EBL=Roundedinstallationlengthofthethermowellinmm
Notethattemperaturemeasurementonmeasurementsystemsintheopenairmaybeinuenced
bytheambienttemperature.Forthisreason,themetering elements outside the pipe should
be adequately insulatedagainstambienttemperatureinuences. In order to achieve optimum
thermalconduction,youshouldalsoalwaysllthethermowell(s)withaheat-conductiveuidor
paste.
Ifno temperaturetest pointsinthe meterhousingarescheduled,the temperature must be
measured in the pipe downstream of the turbine gas meteratadistanceofupto3xDN,but
max.600mmaway.
English