GB
MSA DESCRIPTION
ALTAIR Operating Manual 7
2. Description
2.1. Instrument overview
Fig. 1 Instrument view
1 Alarm LED 5 Test button
2 Infrared port 6 Display
3 Sensor cover 7 Stipulated gas type
4 Acoustic alarm transmitter
The instrument is a portable gas meter for monitoring gases and vapours in the
ambient air and in the workplace. It is used exclusively for monitoring and cannot
be used for measuring gas concentrations.
The instrument is available in three models:
for monitoring oxygen
for monitoring hydrogen sulphide and
for monitoring carbon monoxide
The instrument can detect up to 25% oxygen in the ambient air.
However, all instrument models are calibrated and permitted only up to
21% oxygen-content.
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