67
5 Maintenance
The following resources are needed for adjusting the sensitivity:
●
Test gas
Information on test gases for adjustment can be found in Sec-
tion 5.2.2.
●
Test set for the supply of test gas (e.g.
SPE VOL
)
Note:
Details of how to use the test set can be found in the accompa-
nying operating instructions.
Note:
A
carbon dioxide filter must never be used when adjusting the
sensitivity.
1. Connect the device to the test set.
2. Open
Settings
.
3. Select
Adjustment
menu item.
4. Select the desired adjustment (for example,
Adjustment CH4,
Adjustment gas mixture warning
).
5.
Select the menu item that specifies the sensitivity to be tested.
−
e.g. for
Adjustment CH4
:
2.20 % VOL CH4
−
e.g. for
Adjustment gas mixture warning
:
Gas mixture
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.
Note:
For
Adjustment gas mixture warning
and
Adjustment gas
mixture gas measuring
,
all
values must be stable. The time
required for this can vary depending on the specific gas.
