Multiple gas property sensor
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United States of America Patent
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Aug 17, 1993
Grant Date -
N/A
app pub date -
Oct 23, 1991
filing date -
Oct 23, 1991
priority date (Note) -
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Abstract
Transducer apparatus and related method are described for substantially simultaneously determining pressure and one other property (or property combination) of a flowing gas of varying pressure and composition. The technique utilizes several empirical algorithms for correlating the frequency and series resistance of a crystal resonator exposed to the test gas with the desired properties. The apparatus and method can be readily incorporated into an on-line heating value determination process such as that set forth in the referenced co-filed application.
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