Measuring and testing – Gas analysis – With compensation detail
Patent
1991-03-19
1993-06-29
Goldstein, Herbert
Measuring and testing
Gas analysis
With compensation detail
73 3105, G01N 2700
Patent
active
052223884
ABSTRACT:
Method and apparatus for detecting the presence of gaseous nitrogen dioxide and determining the amount of gas which is present. Though polystyrene is normally an insulator, it becomes electrically conductive in the presence of nitrogen dioxide. Conductance or resistance of a polystyrene sensing element is related to the concentration of nitrogen dioxide at the sensing element.
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Agnew Stephen F.
Christensen William H.
Sinha Dipen N.
Cordovano Richard J.
Gaetjens Paul D.
Goldstein Herbert
Mah Raymond Y.
University of California Patent, Trademark & Copyright Office
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