MSA ALTAIR 4 Manual De Instrucciones página 467

MSA
3.2.2 Fresh Air Setup (FAS)
The FAS is for automatic ZERO calibration of the instrument.
The Fresh Air Setup has limits. The zero of any sensor that is outside of
these limits will not be adjusted by the FAS command.
If a battery charging cycle is interrupted before it is completed (4
hours for a fully discharged battery), allow the instrument's
internal temperature to stabilize for 30 minutes before performing
a Fresh Air Setup.
Attention!
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 personal injury or death.
COMB/EX
CO
Figure 3-1
If this option is enabled, the instrument displays "
user to perform a Fresh Air Setup (FAS CAL).
(1) Press the [
• The Fresh Air Setup is skipped and the instrument goes to the
Measuring page (Main page).
(2) Press the [
Setup.
• The instrument starts the FAS.
The screen shows a No Gas Symbol, a blinking hourglass, and all
•
enabled gas sensor readings.
• At the end of the FAS Calibration, the instrument displays
"
FAS OK
that were outside of the FAS limits. All sensors that are within the
FAS limits will be zeroed.
GB
DECLARATION OF CONFORMITY CONTENTS
O2
H2S
Fresh Air Setup
] button to bypass the Fresh Air Setup.
] button within 10 seconds to perform the Fresh Air
" or "
FAS ERR
ALTAIR 4 - Operating Manual 10088160/00 Y-HLR
", prompting the
FAS?
". along with the flags of the sensors
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