Moisture tester

Details Moisture tester Moisture tester

1977-10-21

1979-09-18

Krawczewicz, Stanley T.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324 61P, G01R 2702

Patent

active

041684664

ABSTRACT:
A continuous flow moisture tester includes first and second electrodes defining a capacitive-type test cell. The first electrode comprises a generally cylindrical tube of electrically conductive material, and the second electrode comprises a generally planar body of electrically conductive material disposed adjacent an inner wall of said first electrode member to define a substantially unobstructed passageway between the electrode members. Material carrying members are connected at an inlet and outlet of the passageway for providing a substantially constant flow of material therethrough and for maintaining the passageway substantially evenly filled with flowing material. An electrical circuit is connected with the test cell for producing a signal corresponding to the moisture content of the material flowing therethrough. The circuit is arranged for producing the above-described signal substantially independent of the density of the material or any variations therein, and in accordance with the electrical properties of the material-filled capacitive test cell.

REFERENCES:
patent: 2665409 (1954-01-01), Rogers
patent: 2726366 (1955-12-01), Rogers
patent: 2788487 (1957-04-01), Grogg, Jr.
patent: 3028549 (1962-04-01), Stein
patent: 3269180 (1966-08-01), Schreiber
patent: 3760267 (1973-09-01), Williams
patent: 3778707 (1973-12-01), Vogel

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