DeltaOHM HD31, Руководство по эксплуатации

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HD31
- 99 -
V1.6
13.4 C
ALIBRATION OF
PP472
MODULE
(
BAROMETRIC PRESSURE
)
The calibration of PP472 module for measuring the barometric pressure is performed in two
points: 800.0 mbar and 1013.0 mbar. In order to calibrate you will need a precision pressure
generator.
After selecting PP472 module for calibration, proceed as follows:
1.
Deliver 800.0 mbar pressure at the module inlet.
2. The instrument displays the first calibration point at 800.0 mbar ( SETPOINT line) and the
pressure value measured by the module ( MEASURE line).
Fig. 13.4.1: barometric pressure calibration
3. The calibration point can be adjusted ( SETPOINT line) using
S
and
T
to fit the effectively
applied pressure value.
4. When the reading is stable, press F3 ( OK command) to confirm: the instrument displays a
countdown ( ACQUIRING ) of a few seconds and then moves to the next calibration point.
In alternative to the F3 key ( OK command) calibration can be confirmed by pressing the F1
key ( SET command). Pressing the SET command keeps the instrument in the current screen,
instead of moving immediately to the next point. This allows confirmation of the performed
correction to be received before continuing. After pressing the SET command, you need to se-
lect the OK command (F3 key) to move to the next point or press ESC to exit calibration.
5. Deliver 1013.0 mbar pressure at the module inlet.
6. The instrument displays the second calibration point at 1013.0 mbar. If necessary, adjust
the calibration point using
S
and
T
.
Note : press ESC if you want to exit the procedure without calibrating the point.
7. When the reading is stable, press F3 ( OK command) to confirm. The instrument displays a
countdown ( ACQUIRING ) of a few seconds; at the end, a message is shown reminding that
the operation will change the calibration data of the probe, select YES ( F3 key) to continue
(or press F1 to select NO and exit).
Note : the boxes next to the SETPOINT number represent the available calibration points; a box
becomes full when the corresponding point is calibrated.
Reference value
Measured value