Three wire potentiometric liquid level sensor

Details Three wire potentiometric liquid level sensor Three wire potentiometric liquid level sensor

1991-02-20

1992-07-14

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

Float

338 33, G01F 2324

Patent

active

051292610

ABSTRACT:
A three wire potentiometric liquid level sensor for measuring liquid levels in a container is disclosed. The sensor includes a conductive strip, a float, a contact means attached to the float, a resistive strip, and a conductive rod buried beneath an insulator. A second embodiment of the invention includes a first conductive strip, a second conductive strip, a float, a contact means attached to the float, and an insulating rod. The sensor produces a resistance directly proportional to the liquid level in the container.

REFERENCES:
patent: 2484690 (1949-10-01), DeGiers
patent: 4052901 (1977-10-01), Bjork
patent: 4084436 (1978-04-01), Smitherman
patent: 4454761 (1984-06-01), Coulange
patent: 4567762 (1986-02-01), Hoppert et al.
patent: 4702107 (1987-10-01), Guerrini et al.
patent: 4724705 (1988-02-01), Harris
patent: 4827769 (1989-05-01), Riley et al.
patent: 4920798 (1990-05-01), Weaver

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