on a cold winter day, the rapid temperature change from indoor to
outdoor can cause the temperature compensation function to fail
temporarily and the analyzer will need a period of time to rebalance.
The low temperature will also make the sensor slow to respond,
damaged or even freeze in extreme situations. One should keep the
instruments in a temperature stable environemnt approximately
15ºC-30ºC. During transit, it is best to stow the instrument in the
portable case. Please avoid long exposures to harsh cold temperatures
in the winter or direct sunlight.
3.3 Powering up the analyzer
To power up the analyzer, press the "Power/Dimness Adjust” button
on the front panel. When powering up, readings will be slowly rising
to the measured value of the current analyzer. When the analyzer has
been stored for a while with the valve in the "OFF" position,it is
normal for the unit to display between 50 and 500ppm.This is caused
by diffusion of oxygen through the sealing O rings.
If the battery power is low, the instrument will begin “beeping” alarm
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