Toxic Gas Measurements - MSA ALTAIR PRO Manual De Operación

MSA
3.3.

Toxic Gas Measurements

The ALTAIR PRO can be purchased to detect the following gases in the
atmosphere:
! Carbon Monoxide (CO) or
! Hydrogen Sulphide (H
It displays the gas concentration in parts per million (PPM) on the measuring
page. The instrument remains on this page until another page is selected or the
instrument is turned OFF.
Warning!
If a toxic or oxygen gas alarm condition is reached while using the
instrument as a personal or area monitor, leave the area immediately:
the ambient condition has reached a preset alarm level.
Failure to follow this warning will cause overexposure to toxic gases,
which can result in serious personal injury or death.
There are four alarm setpoints in the instrument:
! High Alarm
! Low Alarm
! STEL Alarm
! TWA Alarm
The backlight turns ON for 20 seconds during an alarm condition.
Low Alarm
If the gas concentration reaches or exceeds the low alarm setpoint the instrument will:
! display and flash "
enter a low alarm sequence.
!
The low alarm can be silenced for five seconds by pressing the button. It
automatically clears once the gas level falls below the setpoint.
GB
S).
2
LO ALARM
" and "
ALTAIR PRO - Operating Manual
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OPERATION
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