Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Patent
1978-11-24
1980-06-24
Woodiel, Donald O.
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
361284, G01F 2326
Patent
active
042089093
ABSTRACT:
A single, elongated admittance sensing probe element comprises an elongated probe structure including a conductive level measuring probe electrode and a conductive composition probe electrode longitudinally spaced from the level measuring probe electrode closer to one end of the probe. A conductive shield extends between the level measuring and composition probe elements and beyond the composition probe element at the end of the probe. The entire structure is enclosed within an insulating material. In one embodiment, a cylindrical ground electrode or shield is mounted around the probe structure.
REFERENCES:
patent: 2622442 (1952-12-01), De Boisblanc et al.
patent: 2950426 (1960-08-01), Frome
patent: 3079797 (1963-03-01), Hermanson
patent: 4010650 (1977-03-01), Piatkowski
patent: 4021707 (1977-05-01), Ehret et al.
Kramer L. Jonathan
Maltby Frederick L.
Drexelbrook Controls, Inc.
Woodiel Donald O.
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