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UMG70XV3-4EN 12.01.2009 151
17 Inputs
17.5 Temperature Correction
A correction value (offset) for the temperature can be defined for each temperature input.
If a correction value is defined, it will be automatically added to the measured tempera-
ture. This function is useful if e.g.:
• the characteristic curves of the two temperature probes differ considerably one from
another
• a known and constant temperature gradient exists between the measured temperature
and the actual medium temperature.
17.5.1 Activating/Deactivating the Temperature Correction
The temperature correction can be activated/deactivated in
SPECIAL FUNC-
TIONS\SYSTEM SETTINGS\DIALOGS/MENUS
.
17.5.2 Input of the Correction Value
During the flow transducer positioning, the correction values will be requested for each
input which is activated and where the temperature can be measured.
Select
ON
to activate the temperature correction,
OFF
to
deactivate it.
Note!
If
OFF
is selected, the temperature correction will be deactivated for
all inputs. However, the entered correction values for each tempera-
ture input will be stored and displayed again when the temperature
correction is activated again.
Enter the correction value for the temperature input.
Press ENTER.
Note!
Only measured temperatures can be corrected.
For a zero adjustment, the same reference temperature is measured
with the two temperature probes. The difference between the two
measured values is entered as correction value for one of the tem-
perature inputs. The difference can also be distributed on the correc-
tion values of both inputs.
The temperature difference display T1-T2 does not indicate if one or
both temperatures are constants or if the temperatures are corrected.
During measurement, a corrected temperature value is
marked by
COR
.
Tx Corr.Offset
off >ON<
T1 Corr. Offset
0.3 C
T1= 90.5 C (COR)
0.0 kW