Electrical sensor for sensing moisture in soils

Details Electrical sensor for sensing moisture in soils Electrical sensor for sensing moisture in soils

G - Physics

01

N

G01N 27/12 (2006.01) G01N 33/24 (2006.01)

Patent

CA 2093196

A soil moisture sensor to be implanted in soil. The sensor has a conductive metal housing, perforated to pass moisture to and through a filter liner which lines an internal cavity. A transfer matrix is confined in the liner and is abutted by a buffer tablet of compacted gypsum. An electrode matrix abuts the tablet and bridges a pair of spaced-apart electrodes. Water, or absence of water, in the electrode matrix provides a measure of moisture in the soil as a function of electrical conductivity between the electrodes.

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