8. CALIBRATION PROCEDURE
P.17
1.
Turn off the meter.
2.
Press the + , then press button for 3 seconds.
3.
LCD indicator: - - -
4.
In 3 seconds, press
→
→
to enter calibration mode.
5.
LCD line1 indicator: CO2 real time reading.
6.
LCD line2 symbol blinking: Press the
▲
/
▼
button to increase
/ decrease value.
7.
Please wait at least 2 minutes and then press the button.
8.
If there are no error messages appear in the end, LCD shows “
PASS
”.
9.
Press anywhere to exit calibration mode.
