Solvent leak detecting sensor

G - Physics – 08 – B

Patent

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340/144

G08B 21/00 (2006.01) G01M 3/04 (2006.01) G01M 3/16 (2006.01)

Patent

CA 1304470

ABSTRACT OF THE DISCLOSURE A solvent leak detecting sensor is provided comprising: (a) a first electrical conductor and a second electrical conductor installed on an electrically insulating substrate in the form of a detection circuit network, the conductors being exposed and separated from each other, (b) the exposed portions of the first conductor and second conductor being covered by a layer of an electrically insulating material which is both water-repellent and which is dissolved by the solvent that is to be detected, and (c) a top layer covering the layer in "b", this top layer being both porous and electrically conductive. The layer which is both water-repellent and which is dissolved by the solvent that is to be detected is preferably polyvinylchloride and the top layer is preferably conductive carbon powder.

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