Remaining liquid quantity detecting device

Details Remaining liquid quantity detecting device Remaining liquid quantity detecting device

1996-11-06

1998-07-07

Bennett, G. Bradley

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

G01F 2324

Patent

active

057751641

ABSTRACT:
A remaining liquid quantity detecting device to detect the quantity of the liquid remaining in a tank by applying a voltage to a pair of electrodes 1 and 2 set in the tank and detecting the electric resistance which will change under the influence of the liquid existing between the electrodes 1 and 2, wherein a standard voltage 10 having a predetermined electric potential is applied to both of the electrodes 1 and 2 at a non-detection time, and one electric potential between the electrodes 1 and 2 is changed so as to alternate on the basis of the standard voltage.

REFERENCES:
patent: 3694804 (1972-09-01), Hill
patent: 4027172 (1977-05-01), Hamelink
patent: 4244385 (1981-01-01), Hotine
patent: 4390793 (1983-06-01), John
patent: 4610202 (1986-09-01), Edinuma et al.
patent: 4903530 (1990-02-01), Hull
patent: 5255021 (1993-10-01), Noguchi et al.

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