Apparatus including a capacitive probe for measuring the level a

Measuring and testing – Liquid level or depth gauge – Immersible electrode type

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324688, 73292, 361284, G01F 2326

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active

050522230

ABSTRACT:
The present invention relates to apparatus for measuring the level and/or the volume of liquid contained in the tank. The apparatus being of the type comprising a capacitive probe including at least two generally vertical parallel separate main plates for immersing in the liquid, and capacitance-measuring means having a detection input and a ground, the detection input being connected to a first one of the main plates and the ground being connected to the second main plate, wherein the first plate is surrounded by a guard ring. Furthermore, the present invention measures the level or volume of a liquid by calculating a coefficient K using the expression K=(Cmes-Cair)/(Cimm-Cair); in which Cmes is the measuring capacitance between the first and second plates; Cair is the capacitance of the first plate and the second plate in air; Cimm is the capacitance of the first plate and the second plate when they are totally immersed; and K is defined as the area of the first plate in the liquid divided by the total area of the first plate.

REFERENCES:
patent: 2849882 (1958-09-01), Lee
patent: 3119266 (1964-01-01), Atkinson
patent: 3706980 (1972-12-01), Maltby
patent: 3781672 (1973-12-01), Maltby et al.
patent: 3918306 (1975-11-01), Maltby
patent: 4064753 (1977-12-01), Sun et al.
patent: 4166388 (1979-09-01), Sun et al.
patent: 4259865 (1981-04-01), Myers
patent: 4373390 (1983-02-01), Van Dyke et al.
patent: 4568874 (1986-02-01), Kramer et al.
patent: 4589077 (1986-05-01), Pope
patent: 4918376 (1990-04-01), Poduje et al.

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