• Type of alarm displays by alternately flashing the ALARM
icon and the LO or HIGH icon, depending on how the Low
and High alarms were set.
• Low Alarm indicates:
• the lower %O
2
level of the two alarm settings
• a more urgent condition and the faster alarm
sequence will be indicated
• "LO" "ALARM" displays.
NOTE: The LOW alarm (lower of the two %O
2
alarm settings) is latch-
ing and will not reset when O
2
concentration rises above the
LOW setpoint.
• To reset alarm push the TEST button
False oxygen alarms can occur due to barometric pressure
(altitude) changes or extreme changes in ambient temperature.
It is recommended that an oxygen calibration be performed at
the temperature and pressure of use. Be sure that the instru-
ment is in known fresh air before performing a calibration.
2-12
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