5 Maintenance
│
35
Note:
Details of how to use the test set can be found in the accompany-
ing operating instructions.
The device inspection has been opened. An application
has been selected. The
Dev. Test …
menu is visible (sec-
).
1. In the
Dev. Test …
menu, select the menu item to be tested
(e.g.
1.00 VOL% CH4
,
Gas mixture measuring
).
2.
Check whether the test gas concentration specified by the
device matches the test gas you intend to use. To do this
press
Information
.
3. Add the test gas.
4. Wait until the displayed readings are stable. A
Status: OK
message will appear.
5. Press
OK
to confirm.
6. Stop the test gas supply.
The device switches back to the
Dev. test… menu.
A
Test
gas … OK
message will appear.
7. Repeat the procedure where applicable for further test gases.
Once all tests have been successfully completed, the complete
test of the indication accuracy with supply of test gas is also
complete.
Test gas test unsuccessful
If a
Test gas …
test was not carried out successfully, the mes-
sage
Test gas not OK
appears.
A test may be unsuccessful for the following reasons:
Cause
Corrective action
Connections leaking
Repeat check, checking the
seal on the connections
Measurement values outside
the specified limit values
Adjustment required
)
