ALTAIR 5X/ALTAIR 5X IR
GB
29
2.7 Monitoring Oxygen Concentration
The device monitors the oxygen concentration in ambient air. The alarm set points
can be set to activate on two different conditions:
- Enriched - oxygen concentration > 20.8 % or
- Deficient - oxygen concentration < 19.5 %.
When the alarm set point is reached for either of the above conditions:
- the 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]
While the device can detect up to 30 % oxygen in ambient air, it is
approved for use only up to 21 % oxygen.
Attention!
If an alarm is triggered while using the device, leave the area
immediately.
Remaining in the area under such circumstances can cause serious
personal injury or death.
The LOW alarm [oxygen deficient] is latching and will not reset when the
O
2
concentration rises above the LOW set point. To reset the alarm
press the button. If the alarm is latching, the button silences the
alarm for five seconds. Alarms can be made latching or unlatching via
MSA Link software.
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 tem-
perature and pressure of use. Be sure that the device is in known fresh
air before performing a calibration.
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