4-4
USER HANDBOOK
4.2 Alarm Types
4.2.1 LATCHING / NON-LATCHING
Each alarm can be latching or non-latching.
Latching alarms can only be cleared by the user when the
gas level returns to within the alarm limits. A latching alarm
cannot be muted.
Non-latching alarms clear automatically when the gas level
returns to within the alarm limits. A non-latching alarm can
be muted.
4.2.2 MUTING / ACKNOWLEDGING
Muting of an alarm is achieved by a press and hold of the
Bottom Button. Muting means that the audible alarm is
cancelled. The audible alarm is reactivated if a new alarm
occurs.
Acknowledging is only applicable to latching alarms and
allows audible / visual alarms to be cancelled after the gas
readings have returned to safe concentrations.
4.3 Default Alarm Settings
Fig. 4-2, shows the GMI default selections. Latching or non-
latching options exist in all allowable alarms.
If an alarm is disabled (Dis), it will not function.
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