Dry particle-size distribution measuring apparatus

Details Dry particle-size distribution measuring apparatus Dry particle-size distribution measuring apparatus

1995-08-31

1997-10-28

Rosenberger, Richard A.

Optics: measuring and testing

For size of particles

2502222, 250577, G01N 1502

Patent

active

056822359

ABSTRACT:
A dry particle-size distribution measuring apparatus capable of conducting a measurement using a small quantity of sample. An optical system, a sample detector, a controller, an operating portion, and a sample-supplying portion which intermittently supplies a sample are provided. The optical system has a laser beam source emitting a laser beam, a collecting lens, and a detector which detects scattered or transmitted light. The sample supply-detecting means has a light transmitter and a light receiver provided between the sample-supplying portion and the optical system. The controlling and operating portion has a CPU which receives a detected signal from the detector and measures the particle-size distribution on the basis of the scattered or transmitted light data from the sample.

REFERENCES:
patent: 4396911 (1983-08-01), Motsinger et al.
patent: 5272354 (1993-12-01), Kosaka
patent: 5309215 (1994-05-01), Schumann
patent: 5309773 (1994-05-01), Tokoyama
patent: 5359907 (1994-11-01), Baker et al.

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