Method and apparatus for determining the moisture content of a material
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United States of America Patent
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May 24, 1994
Issued Date -
N/A
app pub date -
Mar 30, 1992
filing date -
Jan 13, 1989
priority date (Note) -
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Abstract
In the method of the invention, a microwave signal is passed through a material whose moisture content is to be measured, the change in the velocity of the signal which has travelled through the material is measured and the moisture content is determined on the basis of the measured change and a known interdependence between the changes in the microwave signal velocity and the moisture content of the material. The apparatus comprises a transmitting device (1) which transmits a microwave signal through the material to be measured, and a detecting device (2) and a counting device (3) which measure the change of velocity of the signal transmitted through the material and determine the moisture content of the material on the basis of a known interdependence of the change of velocity of the microwave signal in question and change of moisture content of the material.
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