2. Important Safety Information 2-2. Warning information
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WARNING
Battery replacement or sensor replacement
An OVER alarm may occur if the power is turned on within 10 minutes of replacing the battery or the sensor.
This is due to the characteristics of the sensor.
If an OVER alarm occurs in fresh air after replacing the battery or the sensor, turn off the power, then turn
the power on again after waiting at least 10 minutes.
WARNING
Handling the calibration gas
The carbon monoxide sensor with hydrogen compensation must be calibrated separately for carbon monoxide
and hydrogen.
If hydrogen sensitivity calibration is not performed, carbon monoxide readings may be inaccurate due to
hydrogen interference.
Due to the hydrogen compensation mechanism, carbon monoxide readings may increase temporarily if
hydrogen gas concentrations increase rapidly in the atmosphere being measured.
OX G
C-
C
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