Measuring and testing – Gas content of a liquid or a solid – By vibration
Patent
1990-10-03
1991-12-31
Williams, Hezron E.
Measuring and testing
Gas content of a liquid or a solid
By vibration
73 2401, 73 2403, 73 2404, 73 2406, 73 611R, 73590, 73597, 73599, 310313R, 310313B, G01N 2918, G01N 2920, G01N 2924
Patent
active
050760947
ABSTRACT:
A method of identification and quantification of absorbed chemical species by measuring changes in both the velocity and the attenuation of an acoustic wave traveling through a thin film into which the chemical species is sorbed. The dual output response provides two independent sensor responses from a single sensing device thereby providing twice as much information as a single output sensor. This dual output technique and analysis allows a single sensor to provide both the concentration and the identity of a chemical species or permits the number of sensors required for mixtures to be reduced by a factor of two.
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Frye Gregory C.
Martin Stephen J.
Chafin James H.
Finley Rose M.
Moser William R.
Ojanen Karla
The United States of America as represented by the United States
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