Measuring and testing – Liquid level or depth gauge
Patent
1987-03-25
1988-08-23
Stephan, Steven L.
Measuring and testing
Liquid level or depth gauge
367908, 181124, G01F 2328
Patent
active
047651865
ABSTRACT:
The liquid level detector using guided waves, comprises a first transducer situated out of the liquid for sending an incident elastic pulse which propagates in an elongated guide of which the lower part is immersed in the liquid, a second transducer situated out of the liquid and receiving the elastic pulse sent by the first transducer and transmitted by the guide, and electronic circuits for measuring the time elapsing between the transmission of an incident elastic pulse by the first transducer and the subsequent reception of the same elastic wave by the second transducer. The elongated guide comprises at least one smooth tube having no roughness in the longitudinal direction, the second transducer is situated in a fixed position close to the first transducer so as to receive the elastic pulse delivered by the first transducer after reflection thereof on the surface of the liquid in which is immersed the lower part of the guide, and the first transducer is arranged in such a manner with respect to the guide that periodical radial deformations of the tube are antisymmetrically created essentially in a first axial plane of the guide whereas the radial deformations created in a second axial plane of the guide perpendicular to the first axial plane are substantially equal to zero.
REFERENCES:
patent: 2713263 (1955-07-01), Turner
patent: 3080752 (1963-03-01), Rich
patent: 3100994 (1963-08-01), Juneer
patent: 3113456 (1963-12-01), Smith, Jr. et al.
patent: 3163843 (1964-12-01), Dieckamp
patent: 3208281 (1965-09-01), Kalmus et al.
patent: 3222929 (1965-12-01), Kalmus et al.
patent: 3372592 (1968-03-01), Gravert
patent: 3394589 (1968-07-01), Tomioka
patent: 3656134 (1972-04-01), Brown
patent: 3975958 (1976-08-01), Hope
patent: 4213337 (1980-07-01), Langdon
patent: 4675660 (1987-06-01), Boscolo
Electronic Engineering, vol. 53, No. 659, Nov. 1981, pp. 159-168.
Dieulesaint Eugene
Royer Daniel
Stephan Steven L.
Universite Pierre Et Marie Curie
Will Thomas B.
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