What is the life time of a Relative Humidity sensor?
The life time of a Relative Humidity sensor is very dependent on the environment in which it is fitted. If the sensor is installed in a “domestic” environment and connected to a GEFRAN Humidity transmitter (T220, T230…), then its life time can be higher than 10 years. One will however note a slight drift of long-term sensitivity of a few % of Relative Humidity. If the sensor in an aggressive environment (presenting acid compounds, bases or solvents), its life time can be brought back to a few months, even a few days in extremes cases. It is then necessary to add filters to protect the sensitive element. It results from all of it that the only way of defining the life time of a Relative Humidity sensor is to know the environmental characteristics (composition of gases and concentration, temperature, average moisture, electronic used, operating time….) and to test the sensor under these specific conditions. When all these parameters are difficult to define, it is necessary to test a
