Liquid volume measuring device

Details Liquid volume measuring device Liquid volume measuring device

1978-05-26

1979-09-18

Swisher, S. Clement

Measuring and testing

Liquid level or depth gauge

73290B, G01F 2300

Patent

active

041678745

ABSTRACT:
A device for indicating the volume of liquid in a fuel tank or like container includes a linear variable differential transformer (LVDT) mounted within the tank, which is divided into a liquid containing section and a gas containing section by a longitudinally movable piston. Pressure gas is provided to the gas containing section of the tank through a port in a tank wall, and urges the piston to follow the liquid level in the tank. The LVDT has a fixed coil housing with a fixed electrical input and a rotatable core actuator. The core actuator is coupled for rotation in response to movement of the piston. Rotation of the actuator effects translational movement of the core within the coil, thereby producing a variable electrical output in response to changes in liquid volume.

REFERENCES:
patent: 2074959 (1937-03-01), Guest
patent: 2294198 (1942-08-01), Morrel
patent: 2420539 (1947-05-01), Hornfeck
patent: 2516092 (1950-07-01), Roessler
patent: 2967427 (1961-01-01), Le Blang
patent: 3459042 (1969-08-01), Brown
patent: 3553842 (1971-01-01), Gerber
patent: 3654549 (1972-04-01), Maurer
patent: 3974695 (1976-08-01), Lerner

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