Piezoelectric liquid level sensor

Details Piezoelectric liquid level sensor Piezoelectric liquid level sensor

G - Physics

01

F

340/145, 349/38,

G01F 23/28 (2006.01) G01F 23/18 (2006.01) G01L 9/08 (2006.01)

Patent

CA 1040455

ABSTRACT OF THE DISCLOSURE A piezoelectric pressure sensor for detecting the amount of oil in an engine oil pan of an automobile, and liquid level or the amount of liquid such as water level in a water bath, makes use of the phenomenon that an impedance of an excited piezoelectric element varies between in a gas and in a liquid. The pressure sensor is insensitive to surrounding temperature. and has high response and is of simple construction.

222490

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