Particle size distribution analyzer

Details Particle size distribution analyzer Particle size distribution analyzer

1982-03-01

1985-01-01

Wise, Edward J.

Boots, shoes, and leggings

364416, 377 11, 324 714, G01N 1500

Patent

active

044919263

ABSTRACT:
A particle size distribution analyzer includes a detector adapted to detect particles by electrical or optical differences from a medium containing the particles in dispersion and generate signals proportionally to the sizes of the detected particles, a threshold circuit adapted to remove noises or fragmental signals from the detected signals so as to obtain pulse widths at a constant position, a gate circuit adapted to decide the passage or non-passage of the particles through the threshold circuit, a counter circuit adapted to count the number of the particles fed from the gate circuit, a memory connected to the counter circuit, an arithmetic circuit connected to the memory and the detector, a controller circuit connected to the gate circuit, the memory and the counter circuit, and means for displaying or recording the data stored in the memory.

REFERENCES:
patent: 3935562 (1976-01-01), Stephens
patent: 3936666 (1976-02-01), Hogg et al.
patent: 3936740 (1976-02-01), Hogg et al.
patent: 3982183 (1976-09-01), Collineau et al.
patent: 4063309 (1977-12-01), Hennessy et al.
patent: 4314346 (1982-02-01), Feier et al.
patent: 4412175 (1983-10-01), Maynarez

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