Drift characteristics of the catalytic combustion gas sensor is analyzed

and put forward a test method for accelerating the stability of the gas sensor-on-off electrical stress test method

and the mechanism analysis and experimental verification of the test method are carried out.The test found that after undergoing the on-off electrical stress test

the drift of the sensor under the thermal cycle test condition is within ± 1.5 % FS

and the drift under the long-term energization test condition the is within ± 4.0 % FS.The value is significantly better than the sensor without the on-off stress test.It shows that the on-off electric stress test can accelerate the stability of the catalytic combustion gas sensor

and provides a practical test scheme for quickly realizing the stability of the gas sensor and shortening the production cycle of the sensor.