6
hold timer to a desired number of seconds (above the initial 10
seconds). i.e. An additional 5 seconds for a total of 15 or none if the
subjects can
’t only hold their breath for 10 seconds.
The subject should place their lips around the cardboard mouthpiece and
blow gently and continue blowing until their lungs are completely empty.
CO is collected in the last portion of the breath (alveolar breath).
The CO Check Pro will beep and display the final reading in PPM (parts
per
million). By pressing the Select Function key
, the reading scrolls to
%COHb (carboxyhemoglobin). Pressing the Selection Function key
again reverts back to PPM.
The maximum reading the CO Check Pro can measure is 99 PPM.
Any reading above that will be displayed as - - (
which means it’s
over the range).
Colored lights are there to represent and provide a visual display of the
resulting PPM reading. The colored lights represent the following:
After examining the readings, the device can either be switched off using
the ON/OFF Power key
or another measurement can be carried out by
pressing the Select Function
key for at least three seconds.
To save the battery, the device will switch OFF automatically after
three minutes of non-use.
Warning/Cautions
If higher than expected levels of CO are displayed this could be due
to CO poisoning and medical attention should be sought
immediately.
The CO Check Pro has a cross-sensitivity to hydrogen (from some
gastro-intestinal disorders) which may affect the reading.
0-6 ppm = Green Light
7-10 ppm = Yellow Light
11-20 ppm = Red Light
20+ ppm = Flashing Red Light
