3.2 .
Display
Remark
①：
This battery icon will flash if it’s lack of battery, please change
new batteries. If the battery capacity is too low, the tester will be not
turn on normally.
4. Operation instruction
4.1. Turn on and make testing
1
）
Take off the battery cover, install 3pcs AAA 1.5V batteries correctly.
2
）
Install the mouthpiece according to the directions shown in Pic 1.
3
）
Press
button to power on, together with an brief buzzer sound,
backup LCD will on, meantime the screen will show 30 seconds
counting down for warming up.
Please do not blow during warming up, otherwise it will have error
in the accuracy.
4
）
When the LCD screen shows
“ ” icon, please have a deep breath,
then blow to mouthpiece continuously and equally, stop blowing till
heard a “pa” sound from tester. After a few seconds, the screen will
show the testing result.
During testing process, if the blowing flowrate is too small or
blowing interruption, the screen will s
how “Err” alarming. In this
conditions, please wait for some seconds, or press
to test
WAIT BLOW
mg/100mL
mg/L
1
2
3
6
5
4
1. Waiting
2. Counting
3. Result
4. Unit
5. Power
①
6. Blow reminder
Pic 2