Surface wave gas sensor

Details Surface wave gas sensor Surface wave gas sensor

G - Physics

01

N

G01N 29/00 (2006.01) G01N 29/02 (2006.01)

Patent

CA 2052358

O.Z. 0050/41923 Abstract of the disclosure: A high-sensitivity surface wave gas sensor in which the interaction of a surface wave field with a solid film suitable for adsorbing the gas to be determined causes a change in the frequency of an oscillating circuit containing a surface wave delay line as a function of the type and concentration of the gas entails the delay line provided for adsorption of the gas being completely coated with the solid film, and the dimensions of the delay lines being such that the length of the surface wave transformer is greater than that of the delay line.

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