RMG ERZ2000-NG, Operating Manual

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5 Transmitters
Manual ERZ 2000-NG · EN07 · 2019, May 13th
181
The menu essentially has the same layout as that of absolute pressure and thus
does not have to be explained in detail.
The lower part provides a pre-selection of approved temperature transmitters, which
can be selected. If you select one of these temperature transmitters, there are pre-
settings with which - like above - the entered data has a bright yellow-green back-
ground.
If the operating mode is set to "Default" an automatic identification of the three differ-
ent resistance designations (PT100, PT500 and PT1000) for temperature measure-
ment takes place. The characteristic curve of these resistance measurements as a
function of the temperature is not exactly linear and can be described by a polynomial
with 4 coefficients (0, 1, 2, 3)
– according to Callendar - Van Dusen. Then the corre-
sponding coefficients can be entered.
The
AC26 Joule-Thomson dT is also different. It describes the temperature change
of the gas with a change in pressure without supply or removal of energy.
5.3.1 AL internal temperature of the device
Figure 125: Menu AL internal temperature of the device
The internal temperature of the ERZ2000-NG
AL01 Measured value is measured
near the analog/digital converter. The value can be output as a current out put for
monitoring purposes. The measurement variable can be adjusted to the level of the
prevalent temperature with
AL21 Correction .