Microwave method for measuring the relative moisture content of

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

1980-07-14

1982-11-30

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 2704

Patent

active

043618014

ABSTRACT:
The moisture content of an object is determined by placing the object in a field produced by a microwave applicator and measuring the dielectric properties of the applicator. The measured properties are used to derive the moisture content from known dielectric properties for the applicator without the object present, and from known moisture/dielectric properties for the specific material of the object.

REFERENCES:
patent: 3693079 (1972-09-01), Walker
patent: 4123702 (1978-10-01), Kinanen et al.
Berliner et al., Phase Sensitive Ultrahigh-Frequency Moisture Gauge, Ind. Lab (USA), vol. 37, No. 10, Oct. 1971, pp. 1624-1626.
Kraszewski et al., An Improved Method of Moisture Content Measurement & Control, Inspec., Nov. 1976, pp. 364-369.
Jacobsen et al., Density Independent Moisture Meter at X-Band, Proceedings of the 10th European Microwave Conference, Sep. 1980, pp. 216-220.

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