MSA ALTAIR O2 - Monitoring Toxic Gases

GB
MSA DESCRIPTION
ALTAIR Operating Manual 9
2.3. Monitoring toxic gases
With the ALTAIR, you can monitor the concentration of the following toxic gases
in the ambient air:
 Carbon monoxide (CO)
 Hydrogen sulphide (H
2
S)
Attention!
If an alarm is triggered while using the instrument as a monitor, leave
the area immediately.
Remaining on site under such circumstances can cause serious
damage to health or can even lead to death.
Two alarm thresholds on the instrument are preset at the factory (Minimum "LO"
and Maximum "HI").
On reaching or exceeding one of these alarm thresholds:
 the alarm is displayed in the display ("
LO ALARM" or "HI ALARM")
and
 the corresponding alarm is triggered.
In both cases, the acoustic alarm can be shut off for five seconds by pressing the
test button. As soon as the gas concentration is in the normal range again, the
alarm is terminated automatically.
The alarm is presented in the following manner:
 an acoustic signal sounds,
 the alarm LEDs flash,
 a vibration alarm is triggered and
 in the display, "
ALARM" is displayed in combination with "LO" or "HI"
and the corresponding gas concentration.