What is sensor poisoning?

When certain chemical substances come into contact with catalytic combustion sensors, they may inhibit the activity of the catalytic beads within the sensor or cause poisoning, leading to partial or complete loss of the sensor’s sensitivity. Poisoning results in a permanent degradation of the sensor’s performance, whereas inhibition can be reversed after the sensor has been exposed to clean air for a period of time; however, even after recovery, the sensor’s sensitivity may still be significantly affected. To maintain optimal sensor performance, it is essential to avoid exposing catalytic combustion sensors to environments containing toxic substances or inhibitors.