Compensated probe for capacitive level measurement

Details Compensated probe for capacitive level measurement Compensated probe for capacitive level measurement

1975-10-06

1977-05-03

Goldberg, E. A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

73304C, H01G 700

Patent

active

040217078

ABSTRACT:
A capacitive probe for measuring fluid level has two electrodes, each of which forms a capacitor with a supporting conductive body. The first electrode is a vertical band which will yield a capacitive value dependent upon the dielectric constant, conductivity, as well as level of the fluid. The bulk of the second electrode is arranged at the lower end of the supporting body totally immersed in the liquid, and will yield a capacitance based on the dielectric constant and conductivity of the liquid, but substantially not the level of the liquid. A value indicating the liquid level independent of dielectric constant and conductivity may be obtained from the two capacitive values of the electrodes.

REFERENCES:
patent: 2864981 (1958-12-01), De Giers
patent: 2950426 (1960-08-01), Frome
patent: 3119266 (1964-01-01), Atkinson
patent: 3400331 (1968-09-01), Harris
patent: 3826980 (1974-07-01), Deichelmann
patent: 3935740 (1976-02-01), Whitney

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