Fluid level maintenance sensor for use in a tank test system

Details Fluid level maintenance sensor for use in a tank test system Fluid level maintenance sensor for use in a tank test system

1990-06-08

1991-12-03

Levy, Stuart S.

Measuring and testing

Liquid level or depth gauge

Float

73309, 73314, 340624, G01F 2356, G01F 2362

Patent

active

050690680

ABSTRACT:
A fluid level maintenance sensor or use in a tank test system and which includes an upper sensor coil and a lower sensor coil mounted on a level sensing tube. A float carrying a ferromagnetic ring is operatively mounted in the level sensing tube which causes a fluid transfer signal to be generated when the float and ring are moved upwardly or downwardly to transfer fluid out or into the level sensing tube to maintain a selected fluid level in the tube.

REFERENCES:
patent: 2903678 (1959-09-01), Wills
patent: 3331245 (1967-07-01), Barker
patent: 3638492 (1972-02-01), Fling et al.
patent: 4305283 (1981-12-01), Redding
patent: 4954973 (1990-09-01), Jacob et al.

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