Laser diffraction-type particle size distribution measuring meth

Details Laser diffraction-type particle size distribution measuring meth Laser diffraction-type particle size distribution measuring meth

1993-10-08

1995-06-27

Pham, Hoa Q.

Optics: measuring and testing

For size of particles

By particle light scattering

356338, 356 36, G01N 1502

Patent

active

054284430

ABSTRACT:
A particle-size distribution measuring apparatus and method is provided for suspending a sample containing particles in a fluid and introducing the suspended particles into a sample cell. The sample cell is illuminated with light from a laser source and the diffracted light from the particles is measured by an optical detector array. A computer circuit is capable of computing a plurality of graphs of particle-size distribution in repetitive measurement over a predetermined time period. A video display discloses the plurality of graphs in a juxtapositioned arrangement or stacked arrangement to enable the observer to distinguish between any variations in adjacent graphs.

REFERENCES:
patent: 3879129 (1975-04-01), Inoue
patent: 5015094 (1991-05-01), Oka et al.
patent: 5059395 (1991-10-01), Brittenham et al.
patent: 5305072 (1994-04-01), Sawada et al.

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