Replace Gas Sensors
Replacing a gas sensor in a Sensorbee Air Pro 2 follows the same procedure as installing one for the first time — remove the sensor house, unseat the old sensor, fit the new one, and reassemble.
See Installation of gas sensors for the full step-by-step guide with figures.
Electrochemical gas sensors need to stabilise after power-on. Allow several hours before trusting the readings from a newly-fitted sensor.
