Method of improving the selectivity of a polymer-film gas sensor

Details Method of improving the selectivity of a polymer-film gas sensor Method of improving the selectivity of a polymer-film gas sensor

1997-12-11

1999-11-23

Larkin, Daniel S.

Measuring and testing

Gas analysis

By thermal property

73 232, 73 2505, G01N 2700

Patent

active

059879637

ABSTRACT:
The invention relates to a method for improving the selectivity of a polymer film gas sensor. According to the method, the gas sensor is heated and a sensor parameter sensitive to the variable under measurement is recorded. According to the invention, the parameter of the sensor sensitive to the variable under measurement is measured at a plurality of instants during both the heating period and the cooling period of the sensor, a hysteresis function of the sensor response is formed over the heating and cooling periods, and on the basis of the hysteresis function, the concentration of each measured gas component is determined.

REFERENCES:
patent: 5288645 (1994-02-01), Toshima et al.
patent: 5625139 (1997-04-01), Stormborm

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