Apparatus for ascertaining the complex dielectric constant of to

Details Apparatus for ascertaining the complex dielectric constant of to Apparatus for ascertaining the complex dielectric constant of to

1996-06-27

1998-04-07

Brock, Michael

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

324636, 324634, G01R 2726

Patent

active

057368643

ABSTRACT:
The complex dielectric constant of successive increments of a stream of tobacco particles is indicative of the mass and/or moisture content of the tested increments. Instead of passing along two high-frequency resonators, as disclosed in German patent No. 43 42 505 to Stange, the stream is caused to pass through the inlets and outlets of the housings of two high-frequency resonators which are connected to a microwave generator and transmit high-frequency signals whose amplitudes are indicative of the complex dielectric constants. The signals from the two resonators are processed in a regulating unit wherein a circuit sums up the real and the imaginary parts of the complex dielectric constant.

REFERENCES:
patent: 4651085 (1987-03-01), Sakurai et al.
patent: 4875494 (1989-10-01), Siems
patent: 5500599 (1996-03-01), Stange

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