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If the signal from the CO sensor is too high, a new calibration value
will not be stored and the following will displayed when calibration is
attempted:
The most likely cause for this is using an incorrect concentration of
calibration gas. Ensure that the concentration of calibration gas is
correct (20ppm) that the connections to the gas cylinder are secure,
and then repeat the calibration procedure.
In order to stop any gas leak from the can after calibration, ensure
that the control knob is tightened firmly.
Important Notes:
Only certified calibration gas from a reputable source should be
•
used.
Ensure that no CO is present on the sensor for 3 minutes before
•
starting the calibration procedure.
Ensure that the instrument and gas cylinder have stabilised at
•
room temperature before calibrating.
Do not immerse the unit in the calibration gas.
•
Battery Life
Battery life is approximately 30 hours of continuous use.
When the battery has approximately 1 hour of useful life left the
alarm will sound momentarily after the unit is first switched on and
the following message will be displayed:
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