4-4 Auto power off
In order to prolong the battery life, the instrument
has "Auto Power Off " function. The meter will
switch off automatically if no buttons are pressed
for around 10 minutes.
4-5 Set the Temp. unit ( , ) with default
℃ ℉
1)Power OFF the meter.
2)Press the " Hold Button " ( 3-3, Fig. 1 ) continuously,
use another finger power ON the meter ( press the "
Power Button " once ), until the Temp. unit ( or )
℃
℉
is presented on the Display then release the " Hold
Button ", the Temp. unit will change From to ( or
℃
℉
to ) with default.
℉
℃
4-6 Zero adjustment
Put the meter into the clean air environment ( not
contain any CO value ), power on the meter by
pressing the " Power Button " ( 3-2, Fig. 1 ), wait
about 30 seconds to warm up the meter.
If the display not show " Zero " CO value, then pressing
" Alarm Button " ( 3-4, Fig. 1 ) continuously at
least five seconds will offset the display value and
show " 0 PPM ".
* The zero adjustment procedures are effected only
existing Display value is within 10 PPM.
5
