Method for measuring liquid content in a porous medium such as s

Details Method for measuring liquid content in a porous medium such as s Method for measuring liquid content in a porous medium such as s

1984-05-03

1987-03-24

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324 61R, 324 65P, 73304R, G01V 306, G01R 2702

Patent

active

046528113

ABSTRACT:
A method for measuring liquid content of a porous medium such as soil applies a voltage to a plurality of point contacts placed in the porous medium to be measured for liquid content, as well as to a common electrode also inserted into the porous medium to be measured in spaced relation to the point contacts. Liquid content in the soil is determined as a function of the number of the point contacts having electrical continuity with the common electrode through the porous medium to be measured for liquid content. A predetermined electrical resistance is inserted between each of the point contacts and a source of the voltage applied to the point contacts.

REFERENCES:
patent: 3553577 (1971-01-01), Stromberg
patent: 3631337 (1971-12-01), Mackinney
patent: 3680028 (1972-07-01), Black
patent: 3807055 (1974-04-01), Kraxberger
patent: 3945217 (1976-03-01), Bashark
patent: 3961753 (1976-06-01), Sears
patent: 3982177 (1976-09-01), Walker
patent: 4281289 (1981-07-01), Donaldson
patent: 4553087 (1985-11-01), Kuhn

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