Ultra sensitive liquid level detector and method

Details Ultra sensitive liquid level detector and method Ultra sensitive liquid level detector and method

G - Physics

01

F

73/69

G01F 23/00 (2006.01) G01F 23/296 (2006.01)

Patent

CA 1155197

ULTRA SENSITIVE LIQUID LEVEL DETECTOR AND METHOD (D#76,799-F) ABSTRACT OF THE DISCLOSURE A highly sensitive liquid level detection system. It employs a piezoelectric transducer that has a natural frequency of vibration which effectively varies depending upon the amount that the transducer is immersed in a liquid. An emf is applied to the transducer to cause it to vibrate at the effective natural frequency, and the exact frequency is counted which count indicates the amount of immersion with a high degree of accuracy. A printer may be employed to periodically record the frequency count. I

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