P.16
8. CALIBRATION PROCEDURE
The CO2 span gas can be in the range of 0 - 2000 PPM, 2% accuracy, with
balance air.
Make sure the concentration of the calibration gas is within the range of
each sensor. Do not use gas that could over-range the sensor.
For better accuracy, it is recommended that you use a span gas value close
to the gas concentration you expect to measure.
Please use a new battery during the calibration to prevent interruption or
failed calibration.
Switch to CAL
→
Take out the protection cap
→
Connecting to a stardand
concentration
