40
│ 5 Maintenance
Note:
For
Adjustment gas mixture measuring
,
all
values must be
stable. This time required for this varies.
6. Select
Zero point
from the menu.
7. Press
OK
to confirm. The zero point is adjusted. The reading
shows zero (0.00 % vol. / 0 ppm).
5.2.5.2 Adjusting the sensitivity
For all gases except oxygen O
2
, the sensitivity is adjusted follow-
ing the same procedure.
The following resources are needed for adjusting the sensitivity:
●
Test gas
Information on test gases for adjustment can be found in sec-
●
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 accompany-
ing 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
from the menu.
4. Select the desired adjustment (e.g.
Adjustment CH4
).
5.
Select the menu item that specifies the sensitivity to be tested
(e.g.
100 VOL% CH4
).
Do not confirm with OK yet
.
