DeltaOHM HD31, Руководство по эксплуатации

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HD31
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V1.6
3.5 D
ISPLAYING THE DIFFERENCE BETWEEN TWO HOMOGENEOUS QUANTITIES
A measurement line can display the difference between the values of two homogeneous quan-
tities, e.g. the difference between the values measured by two Pt100 probes, by two thermo-
couple probes, by two equal pressure probes etc.
The difference between the measurements of two different probes cannot be calculated, even
if they refer to the same physical quantity, e.g. between the measurement of a Pt100 probe
and a thermocouple probe, or between the measurement of two pressure probes having a dif-
ferent full scale value.
To display the difference between the values of two homogeneous quantities:
1. Select the first of the two quantities (e.g. A2, if you want A2-B1 to be displayed) using
S
and
T
keys.
2. Press SELECT to display the IN
command in the command bar,
then select the command by press-
ing F1 .
3. Select the DIFF command by pressing F2 .
Note : if a quantity consistent with the one selected is not
available, the command is disabled.
4. The selected measurement line shows the difference between
the value of the quantity originally included in the line (e.g. A2)
and the value of another available homogeneous quantity.
If several homogeneous quantities are available, repeatedly
select the DIFF command ( F2 key) to display the desired dif-
ference.
To disable the difference display, repeatedly select the
DIFF
command ( F2 key) to display again the value of the quantity
originally present in the line.
5. Press ESC to exit the IN command.