Apparatus for measuring ground moisture content of soil
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United States of America Patent
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May 29, 1990
Grant Date -
N/A
app pub date -
Nov 8, 1988
filing date -
Nov 8, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of measuring the moisture content of soil wherein a tapered probe is inserted into a tapered hole formed in the ground. The walls of the hole are tapered substantially in correspondence with the taper of the probe and such that the soil adjacent the walls is not compacted or otherwise affected. In this manner, good contact between the surface of the probe and the soil is obtained. The probe is a capacitance sensing probe with a pair of spaced electrodes along the tapered surface with a dielectric material in between. The electrodes serve as structural members of the probe body and the hollow internal portion is backfilled to prevent moisture from permeating the probe.
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