Method of improving the selectivity of a polymer-film gas sensor and a sensor structure for implementing the method
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United States of America Patent
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Nov 23, 1999
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N/A
app pub date -
Dec 11, 1997
filing date -
Dec 13, 1996
priority date (Note) -
Expired
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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.
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