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5 Maintenance
5.2.4.2 Adjusting the sensitivity
The sensitivity is adjusted following the same procedure for all
gas concentrations.
The following resources are needed for adjusting the sensitivity:
●
Test gas (see
●
Test set for the supply of test gas
Note:
Details of how to use the test set can be found in the accompany-
ing operating instructions.
1. Connect the device to the test set.
2. Open the
settings
(see
3. Select
Adjustment
from the menu.
4. Select the desired adjustment (e.g.
H2 PPM adjustment
).
5.
Select the menu item that specifies the sensitivity to be tested
(for example
100 PPM H2
).
Do not confirm with OK yet
.
6. Press and hold the release button on the test set. The test gas
is added.
Do not let go of the release button
.
7. Wait at least 1 minute. The displayed reading must be stable.
8. Press
OK
to confirm. The device is adjusted. The reading
shows the specified value (e.g. 100 ppm H
2
).
9. Let go of the release button on the test set.
