Apparatus for determining water content of powder/granule

Details Apparatus for determining water content of powder/granule Apparatus for determining water content of powder/granule

1989-09-27

1991-09-10

Will, Thomas B.

Measuring and testing

Moisture content or absorption characteristic of material

324640, G01N 502

Patent

active

050463560

ABSTRACT:
An apparatus for determining water content of powder/granule sample including a rectangular waveguide system substantially set up in the upright or vertical disposition, consisting of a microwave transmitting converter, a microwave waveguide, and a microwave receiving converter; the apparatus comprising: a sample container for containing powder or granular sample and being accommodated inside of the microwave waveguide; the waveguide being provided with an inlet hole communicated to the inner space of the cavity resonator at one of side walls, and having a door for opening and closing the hole and a supporting element for the sample container within the waveguide; a buffer weighing system for supporting the hollow waveguide on a supporting table in the upright or vertical disposition and generates electric signals designating the supporting weight; and signal processing means for receiving signal output from the microwave receiving converter and the other signal from said buffer weighing system, storing and arithmetically processing these signals.

REFERENCES:
patent: 3360721 (1967-12-01), Pullman
patent: 4211970 (1980-07-01), Fitzky et al.
patent: 4485284 (1984-11-01), Pakulis
patent: 4716360 (1987-12-01), Pakulis

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