Liquid detection method and device therefor

Details Liquid detection method and device therefor Liquid detection method and device therefor

G - Physics

01

N

G01N 21/03 (2006.01) G01N 1/10 (2006.01) G01N 1/28 (2006.01) G01N 21/05 (2006.01) G01N 21/11 (2006.01) G01N 21/43 (2006.01) G01N 21/49 (2006.01) G01N 21/59 (2006.01) G01N 33/487 (2006.01)

Patent

CA 2189907

A molding formed therein with a pathway in which liquid flows having its upper surface which is planer, and made of a transparent material at least in an upper part above the upper surface of the pathway, is provided, a light beam is projected to the molding at an incident angle in a range from 42 to 62 deg. with respect to the normal to the upper surface of the pathway, and an intensity of a light beam reflected upon the upper surface of the pathway or transmitted through the pathway is measured in order to surely detect the presence of the liquid in the pathway.

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