Apparatus for measuring particle size distribution

Optics: measuring and testing – For size of particles – By particle light scattering

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356343, G01N 1502

Patent

active

051647877

ABSTRACT:
A particular size measuring apparatus uses laser light and monochrome beams of different wavelengths to measure a wide range of particle sizes. The monochrome beams are obtained from a lamp source and are changed in wavelength by a group of band-pass filters, whereby different ranges of particle sizes can be measured for the respective single wavelengths and thus the range of particle sizes capable of being measured can be expanded.

REFERENCES:
patent: 4679939 (1987-07-01), Curry et al.
patent: 4781460 (1988-11-01), Bott
patent: 5105093 (1992-04-01), Niwa

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