5 alarm types, Acknowledging, Alarm types – Heath Consultants GT Series User Manual
Page 113: Latching, Muting, Non latching, Types, alarm, 5 alarm types -9
11-9
ALARMS
Fig. 11.7 LTEL H
2
S Alarm
11.5 ALARM TYPES
11.5.1 Latching / Non Latching
Each alarm can be latching or non latching. Latching alarms
must be, and can only be cleared by the user when the
gas level returns to within the alarm limits.
Non-latching alarms clear automatically when the gas level
returns to within the preset alarm limits.
11.5.2 Muting / Acknowledging
Muting:
Muting of an alarm is achieved by a press and
hold of the LH button.
Muting means that the audible alarm will cancel
for 60 seconds, after which if the gas
concentration is still above the set level (or
below for Oxygen) the alarm will reactivate.
Acknowledging:
Only applicable to latching alarms. The audible/
visual alarms can only be cancelled after the
atmosphere has returned to safe concentrations.