Operation
16
ILMVAC GmbH
600072
6.3.5
Zero point calibration of the capacitive sensor element
The zero point of the capacitive
sensor element is calibrated at
1 mbar. Please ensure that this
pressure is applied to the sensor
during the calibration procedure.
Fig. 15 Calibration mode: calibrating 1 mbar
Calibration mode is called by pressing both the < set > and <
↑↑↑↑
> keys simultaneously.
The calibration mode is indicated in the display by two triangles in front of the measured va-
lue.
•
Select the pressure to be calibrated (in this case 1 mbar) with the <
↑↑↑↑
> and <
↓↓↓↓
> cursor
keys.
•
The cursor key must be held up to 0.001 mbar in the display appears.
•
Now the cursor key <
↑↑↑↑
> still 1 x briefly press. In the display 1 mbar must appear.
•
Make sure that a pressure of 10 is applied to the sensor.
•
Accept the measured value by pressing the < set > key.
Please press the function key < F > if you want to leave calibration mode prematurely with-
out taking over the new calibration value, the device then switches back to measuring mode.
6.3.6
End point calibration of the capacitive sensor element
The end point of the capacitive
sensor element is calibrated at
atmospheric pressure in the range
between 920 mbar and 1050 mbar.
Apply the actual air pressure of the
day to the sensor. You can obtain
the pressure, for example, by
asking the relevant weather
bureau. Please ensure that this
pressure is applied to the sensor
during the calibration procedure.
Fig. 16 Calibration mode: Calibrating atmospheric pressure 920 to 1050 mbar
Calibration mode is called by pressing both the < set > and <
↑↑↑↑
> keys simultaneously.
The calibration mode is indicated in the display by two triangles in front of the measured va-
lue.
•
Select the pressure to be calibrated (in this case 960 mbar, or the actual air pressure at
your location) with the <
↑↑↑↑
> and <
↓↓↓↓
> cursor keys.
•
The cursor key must be held up to 0.001 mbar in the display appears.
•
The cursor key must be held to the daily air pressure in the display appears.
•
Make sure that this pressure is also applied to the sensor.
•
Accept the measured value by pressing the < set > key.
Please press the function key < F > if you want to leave calibration mode prematurely with-
out taking over the new calibration value, the device then switches back to measuring mode.
1
mbar
960
mbar