GT-FIRE
PORTABLE GAS DETECTOR
67816
Revision D
25
5.3. Gas Alarm Examples
Figure 23: LOLO Oxygen Alarm
Figure 24: HIHI LEL Alarm
Figure 25: STEL H
2
S Alarm
Figure 26: LTEL H
2
S Alarm
5.4. Gas Alarm Options
5.4.1. Latching/Non Latching
Alarms are individually programmable to be either latching or non-latching:
• Latching - alarms can only be reset once gas readings have returned to a safe level. To
reset, press and hold the AL ACK button.
• Non-Latching - alarms will automatically reset when the gas readings have returned to a
safe level.
5.4.2. Acknowledging
User can acknowledge a latching alarm by pressing and holding the AL ACK
button. This can
only be done after the atmosphere has returned to safe concentrations.