Microwave method for measuring the relative moisture content...

Details Microwave method for measuring the relative moisture content... Microwave method for measuring the relative moisture content...

G - Physics

01

N

324/29.8

G01N 22/04 (2006.01)

Patent

CA 1149020

PHD 79 084 18 30-6-1980 ABSTRACT: "A microwave method for measuring the relative moisture content of an object." The known moisture meters are not reliable in the case of variation in the density and a non-uniform distribution of the object to be measured in the measuring space. Methods are described in which in known manner the complex transmission factor of the object to be measured and, which is new, also simultaneously the complex reflec- tion factor is measured. A preceding measurement in a given form for making a calibrating curve remains required. The theoretical basic ideas, confirmed by measured values, are shown for various "measuring spaces", namely for free waves and TEM guides, that is coaxial guides, for waveguides with the special case of low-loss samples and with a low dielec- tric constant and for a closed resonator.

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