English (GB)
23
11.4.7 Adjusting the zero point of the sensors
The sensor may have a deviation from its zero point,
i.e. it indicates a concentration although no gas is
present in the air. To correct this, the zero point of
the sensor can be adjusted.
A zero deviation of up to 0.5 ppm can be corrected.
In case of higher deviations, the sensor is defective
and must be replaced.
To carry out a zero adjustment:
1. Position the sensor in an
absolutely gas-free
environment
.
2. Proceed as follows.
3. Press the [Up] button.
4. Press [OK].
– The actual stored value of the zero point
adjustment is displayed.
5. Press [OK].
6. Press the [Up] button.
7. Press [OK].
– The new value of the zero point adjustment is
displayed.
8. Press [OK].
9. Press [OK].
– If the device is set to "2 sensors", the same
procedure follows for sensor 2.
10. Press [OK].
11. Press the [Up] button.
12. Press [OK].
– The new value of the zero point adjustment is
displayed.
13. Press [OK].
14. Press [Esc] to change to the "Parameter" menu.
11.4.8 Factory setting
13.1 Resetting the device to factory
.
Warning
If you apply this function incorrectly,
measurement faults may occur, or the
measurements may not be correct!
Warning
Never carry out the zero adjustment in the
room which is to be monitored by the
sensor!
Caution
A gas concentration which may be present
in this environment would otherwise be
subtracted as an offset from the measured
value in the future!
0-point
adjustment
OFF
0-point
adjustment
ON
0-point
M1
stored
x
0-point
M1
adjustment
OFF
0-point
M1
adjustment
ON
0-point
M1
stored
y
0-point
M1
adjustment
OFF
0-point
M2
stored
x
0-point
M2
adjustment
OFF
0-point
M2
adjustment
ON
0-point
M2
stored
y
0-point
M2
adjustment
OFF
Factory setting
OFF
Caution
Only use this function if you are aware of
the consequences. All device settings are
lost and must be re-entered!
Summary of Contents for Conex DIS-G
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