Apparatus for determining grain size

Details Apparatus for determining grain size Apparatus for determining grain size

1986-06-05

1988-07-05

Willis, Davis L.

Optics: measuring and testing

For size of particles

By particle light scattering

356343, G01N 2153

Patent

active

047550520

ABSTRACT:
An apparatus for determining grain size distribution patterns of particles for selected measuring ranges, wherein a specimen cell (15) is arranged in a convergent monochromatic light beam (4) and the produced diffraction patterns (5a, 6a, 7a) are received by a photo detector. By altering the spacing of the specimen cell (15) from the photo detector (44), the measuring range can be selected for differing grain sizes.

REFERENCES:
patent: 3830569 (1974-08-01), Meric
patent: 4188121 (1980-02-01), Hirleman, Jr. et al.
"Particle and Droplet Sizer", Powder Mettalurgy International, vol. 10, No. 2, 5/1978, p. 99.
"Particle Size Analyzer", Applied Optics/vol. 11, No. 2, 2/1972, J. Cornillault, pp. 265-268.

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