Apparatus for indicating the presence of water or ice on an...

Details Apparatus for indicating the presence of water or ice on an... Apparatus for indicating the presence of water or ice on an...

G - Physics

01

S

349/35

G01S 15/88 (2006.01) G01N 29/11 (2006.01) G01W 1/14 (2006.01)

Patent

CA 1154141

ABSTRACT OF THE DISCLOSURE A detecting transmitter device installed in opera- tive proximity with a surface to be observed includes an ultra- sonic waveguide installed in such surface. Electronic equip- ment electrically connected to the ultrasonic waveguide trans- mits ultrasonic waves to the waveguide. The ultrasonic waves proceed in the waveguide. The equipment also receives the ultrasonic waves from the waveguide. The degree of attenua- tion of the waves in the waveguide depend upon the difference in viscosity and other mechanical properties of water and ice, whereby the detecting transmitter device and the electronic equipment detect freezing of the surface by attenuation of the waves in the waveguide.

361774

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