Method for measuring size distribution

Details Method for measuring size distribution Method for measuring size distribution

1987-10-19

1989-02-21

Rosenberger, Richard A.

Optics: measuring and testing

For size of particles

356379, G01N 1502, G01N 2185

Patent

active

048060143

ABSTRACT:
The size distribution of wood chips for the manufacture of cellulose pulp is determined by an optoelectric measuring method and device. Light reflected from a conveying surface (2) and lump material distributed thereon, is recorded optically (3) at short time intervals, and recorded signals are processed electronically for obtaining the size distribution of the material over a number of selected size classes.

REFERENCES:
patent: 939830 (1909-11-01), Haenke et al.
patent: 3409187 (1968-11-01), Socha
patent: 4288162 (1981-09-01), Sakamoto et al.
patent: 4514816 (1985-04-01), Ollus et al.

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