Particle size measuring instrument with direct scattered light d

Details Particle size measuring instrument with direct scattered light d Particle size measuring instrument with direct scattered light d

1988-07-11

1990-04-17

Scott, Jr., Leon

Optics: measuring and testing

For size of particles

By particle light scattering

356338, 250574, G01N 1502

Patent

active

049174967

ABSTRACT:
In an instrument for measuring the size of particles entrained in a fluid stream, photodetectors are mounted on the walls of tubing shaping the flow of the fluid stream through a laser beam. The photodetectors generate electric current pulses in response to scattering of the light which is generated by the particles passing through the laser beam. The pulses generated by the photodetectors provide a measurement of particle size. The photodetectors are mounted either adjacent to the laser beam on the tubing walls or, alternatively, the tubing walls are mirrored above and below the laser beam and the photodetectors are mounted on the tubing walls at right angle bends of the tubing to receive the light reflected from the mirrored surfaces.

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patent: 4801205 (1989-01-01), Tatsuno
patent: 4830494 (1989-05-01), Ishikawa et al.

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