Measuring and testing – Moisture content or absorption characteristic of material
Patent
1986-10-07
1988-12-06
Cuchlinski, Jr., William A.
Measuring and testing
Moisture content or absorption characteristic of material
324 585A, G01N 2900, G01N 2726
Patent
active
047888539
ABSTRACT:
A moisture meter and method for determining moisture content in a mass of material is provided. A source of microwave radiation selectively produces radiation having a plurality of different frequencies and directs the radiation into the mass of material. A support is provided for the material, which is substantially transparent to the radiation. A detector determines the emergent intensity of the radiation of each frequency traversing the mass of material and the support. A signal processing unit, responsive to (1) an intensity level of incident radiation directed into the mass of material, (2) a level of the emergent intensity of the radiation after passage through the mass of material and the support, and (3) the selective radiation frequencies, determines a value characteristic of moisture content based upon a slope of a plot of attenuation representing a difference between the intensity level of the incident radiation and the emergent radiation versus each of the plurality of different frequencies.
REFERENCES:
patent: 3155898 (1964-11-01), Chope
patent: 4058766 (1977-11-01), Vogel et al.
patent: 4211970 (1980-07-01), Fitzky et al.
patent: 4246784 (1981-01-01), Bowen
patent: 4283953 (1981-08-01), Plona
patent: 4326163 (1982-04-01), Brooke
Coal Industry (Patents) Limited
Cuchlinski Jr. William A.
Worth W. Morris
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