Gas tightness detection method for gas sensor

• Main Authors: DUAN TAIRUI, WANG PANFEI, ZHANG GUOXIAO, CAO JINGHUI, ZHANG LIN
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention relates to the technical field of gas sensors, particularly provides a gas tightness detection method for a gas sensor, and aims to solve the problem of gas leakage risk caused by the fact that a hole needs to be formed in a shell during gas tightness detection of an existing gas sensor. The gas tightness detection method comprises the following steps: S1, placing a gas sensor in a standard gas environment, detecting a signal related to target gas concentration, and recording the signal as a first signal; s2, placing the gas sensor in a target gas environment with a preset concentration, and keeping for a first preset time; s3, placing the gas sensor in a standard gas environment, detecting the signal related to the target gas concentration again, and recording the signal as a second signal; and determining whether the gas tightness of the gas sensor is qualified or not according to the first signal and the second signal. According to the invention, the gas tightness of the gas sensor can be det