Monitoring Toxic Gases - MSA ALTAIR 5 Operating Manual

MSA
2.6.

Monitoring Toxic Gases

The instrument can monitor the concentration of a variety of toxic gases in
ambient air. Which toxic gases are monitored depends on the installed
sensors.
The instrument displays the gas concentration in parts per million (PPM) or
3
mg/m on the Measuring page until another page is selected or the
instrument is turned OFF.
If an alarm is triggered while using the instrument, leave the area
immediately.
Remaining on site under such circumstances can cause serious personal
injury or death.
The instrument has four gas alarms:
HIGH Alarm
•
LOW Alarm
•
STEL Alarm
•
TWA Alarm
•
Figure 2-11
If the gas concentration reaches or exceeds the alarm setpoint, the
instrument:
backlight turns on
•
the alarm message displays and flashes in combination with the
•
corresponding gas concentration
enters an alarm state
•
alarm sounds
•
alarm LEDs flash
•
a vibration alarm triggers
•
US
Alarm Conditions (here High Alarm)
ALTAIR 5 - Operating Manual
WARNING
1:30 PM
%
20
PPM
0
PPM
0.0
DESCRIPTION
MSA
Vol %
20.8
COMB
PPM
CO 0
SO
2
HIGH ALARM
21