Patent ID: 7377147
Filing Date: 2008-05-27
Classification: G01N

Abstract:
1. A method of testing performance of a gas sensor assembly, comprising: applying a testing gas adjacent a gas sensor assembly; obtaining a first reading value of testing gas; storing the first reading value; obtaining a second gas sensor assembly reading value; determining a rate-of-rise value of the first and second reading values of the gas sensor based on a difference of the first and second reading values relative to a testing time interval therebetween; determining if a gas sensor assembly passing condition exists based on a comparison of the rate-of-rise value of the first and second reading values to at least a first predefined rate-of-rise value of the gas sensor assembly; and further comprising a preliminary step of determining if a testing threshold value is obtained before applying the testing gas to obtain the first reading value, which testing threshold value is a minimum value for which the gas sensor assembly is validated.