Liquid quantity measuring apparatus

Details Liquid quantity measuring apparatus Liquid quantity measuring apparatus

1981-11-05

1984-03-06

Frankfort, Charles E.

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

G01F 2326

Patent

active

044346573

ABSTRACT:
An apparatus for measuring the quantity of a liquid such as a fuel in a tank, which comprises liquid level measuring electrodes, comparing electrodes dipped always in the liquid to detect the capacitance inherent to the liquid, an LC oscillator for converting each capacitive value measured by the electrodes into a corresponding frequency signal, reference electrodes constituting a level feeder together with the oscillator to compensate for capacitive variation of the latter, and a microcomputer for calculating a liquid quantity in the tank based on the frequency signals and for displaying the calculated quantity.

REFERENCES:
patent: 3283577 (1966-11-01), Schuck
patent: 4163391 (1979-08-01), Bezard et al.
patent: 4204427 (1980-05-01), Gothe et al.
patent: 4296472 (1981-10-01), Sarkis
patent: 4296630 (1981-10-01), Jung et al.
patent: 4349882 (1982-09-01), Asmundsson et al.

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