MSA ALTAIR 4 Manual De Instrucciones página 461

MSA
2.7 Monitoring Combustible Gases
The instrument can monitor these concentrations in ambient air:
• Methane
• Combustible gases
The instrument displays the gas concentration in % LEL or % CH
Measuring page until another page is selected or the instrument is turned off.
Attention!
If an alarm activates while using the instrument, leave the area
immediately.
Remaining on site under such circumstances can cause serious
damage to health or can even lead to death.
The instrument has two alarm set points:
• HIGH Alarm
• LOW Alarm
If the gas concentration reaches or exceeds the alarm set point, the
instrument:
• backlight turns on
• a vibrating alarm triggers
• displays and flashes the alarm icon
icon
enters an alarm state.
•
When gas reading exceeds 100% LEL CH
a Lock Alarm state and displays "xxx" in place of the actual reading.
This state can only be reset by turning the instrument off and on.
Attention!
A combustible gas reading of "100" indicates the atmosphere is
above 100 % LEL CH
away from contaminated area immediately.
In such cases, the instrument LockAlarm feature activates.
Please check your national standard values for 100% LEL. Some
countries use 5% vol and some use 4.4% vol as 100% LEL CH4.
GB
DECLARATION OF CONFORMITY CONTENTS
(LOW alarm) or the maximum icon
and an explosion hazard exists. Move
4
ALTAIR 4 - Operating Manual 10088160/00 Y-HLR
on the
4
and either the minimum
(HIGH alarm)
, the instrument enters
4
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