Process for verifying an electrochemical substance in a gas sample
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United States of America Patent
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Oct 8, 2013
Grant Date -
Jun 16, 2011
app pub date -
Oct 7, 2010
filing date -
Dec 1, 2009
priority date (Note) -
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Abstract
A process is provided for verifying an electrochemical substance in a gas sample. The process generates in an electrochemical sensor a measured electric value changing over time with a characteristic rising from a reference line to a maximum and again declining to the reference line. The percentage of the electrochemical substance in the gas sample is determined in an analysis circuit by setting a first interval and a second interval in the range of the characteristic after the maximum has been exceeded. The first interval includes the range of the characteristic in the vicinity of the maximum and the second interval includes the range of the maximum in the vicinity of the reference line. The electrochemical substance is determined by determining the ratio of the slopes of the first and second intervals and by comparison with a reference value of the ratio of the slopes of the first and second intervals.
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