Test analysis of the life of room temperature electrochemical oxygen sensor

The influence of different stress factors such as temperature, vacuum and vibration on room temperature electrochemical sensor life was analyzed by constant stress accelerated test. The results showed that the temperature was the maximum stress, and when the temperature raised from 40 ℃ to 50 ℃, the life of sensors shortened from 6 months to 3 months. Influence of low environment pressure on the life reliability of the sensor was weaker than the temperature stress. And when the absolute pressure decreased from 50 kPa to 10 kPa, life expectancy was shortened by 1/3. The results also showed that vibration stress had little effect on the reliability of sensor life. Research and development of new type of low volatile and high stability electrolyte material wich could resist high temperature and low environment pressure was the main direction of the development of room-temperature electrochemical oxygen sensor.