MSA ALTAIR 5X - 2.8 Monitoring Combustible Gases

MSA
Description
ALTAIR 5X/ALTAIR 5X IR
30
GB
2.8 Monitoring Combustible Gases
The device can be equipped with a catalytic combustible sensor that detects a va-
riety of combustible gases up to 100 % LEL and displays the reading as either
%LEL or %CH
4
. The ALTAIR 5X IR can also contain an IR combustible sensor.
The IR sensor displays the reading in % Vol.
The catalytic combustible and the 25 % Vol Butane IR sensor have two alarm set-
points:
-HIGH Alarm
- LOW Alarm
If the gas concentration reaches or exceeds the alarm set point, the device:
- alarm message displays and flashes in combination with the corresponding gas
concentration:
- backlight turns on
- alarm sounds [if active]
- alarm LEDs flash [if active]
The 100 % Vol IR sensors have no alarm setpoints.
Gas Exposure of 100 % LEL
For ALTAIR 5X IR devices with an enabled 100 % Vol methane IR sensor, the
LockAlarm will clear, and the catalytic combustible again displays combustible con-
centrations when the gas sample drops to a lower level. For devices without an en-
Attention!
If an alarm is triggered while using the device, leave the area
immediately.
Remaining in the area under such circumstances can cause serious
personal injury or death.
When gas reading exceeds 100 % of the lower explosive limit [LEL],, the
device enters a Lock Alarm state and displays “XXX” in place of the ac-
tual reading.
Attention!
A catalytic combustible gas reading of "XXX” indicates the atmosphere
could be above 100 % LEL or 5.00 % Vol CH
4
and an explosion hazard
exists. Move away from contaminated area immediately.