Method and apparatus for determining the moisture content of a m

Details Method and apparatus for determining the moisture content of a m Method and apparatus for determining the moisture content of a m

1992-03-30

1994-05-24

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

324643, 324634, 342122, G01R 2704, G01R 2504

Patent

active

053152581

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.

REFERENCES:
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Skol-Nik: "Introduction To Radar Systems"-McGraw Hill--1980--pp. 81-85 (no month).

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