ALTAIR 5X/ALTAIR 5X IR
GB
35
Fresh Air Setup [FAS]
The Fresh Air Setup [FAS] is for automatic ZERO calibration of the device.
The FAS has limits. If a hazardous level of gas is present, the device ignores the
FAS command and the device alarm activates.
The ability to perform an FAS at device turn-ON can be disabled by using MSA Link
software.
Fig. 7 Fresh Air Setup
The Fresh Air Setup is not available for the CO
2
sensor.
Warning!
Do not activate the Fresh Air Setup unless you are certain you are in
fresh, uncontaminated air; otherwise, inaccurate readings can occur
which can falsely indicate that a hazardous atmosphere is safe. If you
have any doubts as to the quality of the surrounding air, do not use the
Fresh Air Setup feature. Do not use the Fresh Air Setup as a substitute
for daily calibration checks. The calibration check is required to verify
span accuracy. Failure to follow this warning can result in serious per-
sonal injury or death.
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