MSA ALTAIR 4 Manual De Instrucciones página 473

MSA DECLARATION OF CONFORMITY CONTENTS
60% L.E.L. or 3.0% volume of methane is the maximum High Alarm set
point that can be programmed by the user.
The combustible alarm can be turned off by the user in the instrument
setup. When the combustible alarm is turned off, the only indicator to the
user that the combustible alarm is turned off occurs during power up of the
instrument at which a startup screen will indicate that the combustible alarm
is turned off. When turned on, the combustible high alarm is latching. The
combustible alarm can be silenced momentarily by pressing the [ ] button.
However, if the gas concentration causing the alarm is still present, the unit
will go back into alarm.
ALTAIR 4 - Operating Manual 10088160/00 Y-HLR
33
GB