Apparatus for determining the water content of isotropic materia

Details Apparatus for determining the water content of isotropic materia Apparatus for determining the water content of isotropic materia

1978-03-27

1980-06-03

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 585B, G01R 2704

Patent

active

042063990

ABSTRACT:
The principle of measurement is based on the microwave absorption by the water content of a sample. The sample is located in a closed single-reflection measurement cell which is fed by a microwave oscillator which is frequency-modulated within the absorbing frequency range of the sample. The sample partially or completely fills the end section of a circular or rectangular waveguide forming the measurement cell. The waveguide is sealed off with a short circuit plate so that two planar travelling waves with a homogeneous field distribution are present in the measurement cell.

REFERENCES:
patent: 2548598 (1951-04-01), Feiker, Jr.
patent: 2611804 (1952-09-01), Zaleski
patent: 2671884 (1954-03-01), Zaleski
patent: 3348140 (1967-10-01), Godding
patent: 3379971 (1968-04-01), Albanese

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