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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

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.

대표청구항 ▼

A probe for the capacitive level measurement of a liquid in a container, said probe being comprised of: a rod-shaped conductive body for substantially vertical mounting with said container; a first electrode embedded in insulation along the length of said rod shaped body, a second electrode, at leas

A probe for the capacitive level measurement of a liquid in a container, said probe being comprised of: a rod-shaped conductive body for substantially vertical mounting with said container; a first electrode embedded in insulation along the length of said rod shaped body, a second electrode, at least a portion of which is at the lower end of said rod-shaped body below said first electrode; and insulating means for electrically insulating said electrodes from said rod-shaped body so that each electrode forms a capacitor with said rod-shaped body.