CareFusion MicroCO Operating Manual page 61

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.
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 stabilized at
•
room temperature before calibrating.
In order to stop any gas leak from the can after calibration,
•
ensure that the control knob is tightened firmly.
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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