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OXYGEN DEFICIENCY MONITOR PAGE 6
5. Operation
5.1 Turn the ON/OFF switch to “ON” position.
5.2 Display reads percent oxygen.
5.3 If the alarm sounds the percentage oxygen has dropped below
the present alarm lever (factory set to 19.5%). The alarm will turn
off automatically when the oxygen concentration rises above the
alarm level.
5.4 If the word “BAT” is indicated on the display the battery must be
replaced.
5.5 If the reading is abnormally low in an environment which is
known to have sufficient oxygen, and the unit cannot be
calibrated, the sensor life is complete and the sensor must be
replaced.