Method of and apparatus for determining the level of liquid in a

Details Method of and apparatus for determining the level of liquid in a Method of and apparatus for determining the level of liquid in a

1983-03-31

1985-08-20

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

73149, 73290V, 367908, G01F 1700, G01F 2318

Patent

active

045356270

ABSTRACT:
A container of known volume, such as a fuel tank of an automotive vehicle, is provided with a loudspeaker-like membrane which can be energized to produce a pressure pulse in the gas space above the liquid in the container. The oscillations of this gas space are then converted into a signal via the diaphragm and the period of the signal is determined to provide the volume of the gas space. This is subtracted from the gas volume of the container automatically to indicate the liquid volume and the liquid volume can be displayed on the dashboard of the vehicle.

REFERENCES:
patent: 1591068 (1926-07-01), Williams
patent: 2583941 (1952-01-01), Gordon, Jr.
patent: 3237451 (1966-03-01), Haeff
patent: 3256738 (1966-06-01), Giacomo et al.
patent: 3411351 (1968-11-01), Schwartz
patent: 3777192 (1973-12-01), Barrow
patent: 4197741 (1980-04-01), Morrow, Jr.
patent: 4221004 (1980-09-01), Combs et al.
"Chemical Tankers-Liquid Level Measurement", Marine Week, vol. No. 6, No. 11, (1979), pp. 8-9, Mar. 22, 1978.

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