3-5
OPERATION
Fig. 3-5 Service Due Date
The service interval is 12 months.
If service is overdue, the instrument will automatically
switch OFF.
Modes of Operation
CGI Mode (Combustible Gas Indicator)
Alarms are active on the O
2
and CO ranges. The alarms are
only indicated on the display and are non-latching.
An audible ‘Geiger’ style alarm is available on the ppm range
and is muted by default.
If an O
2
or CO alarm is activated, and the range being viewed
is not O
2
or CO, the range window will alternate with O
2
or
CO.
Fig. 3-6, illustrates a CO alarm which has been activated
whilst viewing the LEL range.
Fig. 3-6 LEL Range / CO Alarm Indication
Note: If both O2 and CO alarms exist, then the O2 alarm
will be displayed.
Service Due:
6th March
(Alternate Flash)
Alternate
Flash
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