Co2 Sensors - Invisible systems QC0161 Installation Manual

QC0161 Temperature/Humidity/CO2 Sensor
2.2 CO2 Sensors
The CO2 sensor needs to calibrate itself when the battery is installed. To do this, please follow the
sequence below:
1. Move the transmitter outside into fresh air
2. Remove the label protecting the battery and install the battery, being careful to observe the
correct polarity
3. Leave the transmitter for at least 2 minutes in fresh air after installing the battery ‐ the CO2 sensor
will take a reading and set this as baseline of 400ppm
4. After 2 minutes, install the transmitter in its final location
To ensure no long‐term drift of the CO2 sensor, the above process should be repeated to re‐
calibrate the sensor.
The more accurate the CO2 level reading required, the more often it should be calibrated. Suggested
re‐calibration intervals are:
* Scientific experiments ‐ before each test
* Greenhouse ‐ after each growing season
* Manufacturing ‐ bi‐annually to annually
* Indoor air quality ‐ annually
These are general guidelines. Calibration schedules may also be dictated by experimental protocols
or by particular industrial standards. Consult your specific sensor requirements for your application.
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