Monitoring Combustible Gases - MSA Altair 5X Mode D'emploi

False oxygen alarms can occur due to changes in barometric pressure
(altitude), humidity, or extreme changes in ambient temperature.
It is recommended that an oxygen calibration be performed at the
temperature and pressure of use. Be sure that the instrument is in
known fresh air before performing a calibration.

2.8.1 Monitoring Combustible Gases

The instrument can be equipped with a catalytic combustible sensor
that detects a variety of combustible gases up to 100% LEL and
displays the reading as either % LEL or % CH
also contain an IR combustible sensor. The IR sensor displays the
reading in % Vol.
If an alarm activates while using the instrument, leave the
area immediately.
Remaining in the area under such circumstances can
cause serious personal injury or death.
The catalytic combustible and the 25% Vol Butane IR sensor have two
alarm setpoints:
• HIGH Alarm
• LOW Alarm
If the gas concentration reaches or exceeds the alarm setpoint,
the instrument:
• alarm message displays and flashes in combination with the
corresponding gas concentration:
• backlight turns ON
• alarm sounds (if active)
• alarm LEDs flash (if active)
• vibrating alarm triggers (if active).
The 100% Vol IR sensors have no alarm setpoints.
! WARNING
. The ALTAIR 5X IR can
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