Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1981-07-16
1984-02-07
Arnold, Bruce Y.
Optics: measuring and testing
By particle light scattering
With photocell detection
G01P 0520, G01N 2149
Patent
active
044299958
ABSTRACT:
Apparatus for analyzing flowing fluid which contains light scattering particles comprises a light source; beam-expansion means to expand a light beam from the source to provide a two-dimensional sheet of light, there being at least a component of the fluid flow in the plane of said sheet; sensing means to sense light scattered by the particles; switch means arranged so that the sensing means senses scattered light only intermittently; and control and calculating means to calculate from the intermittently sensed light a property of the flow.
REFERENCES:
patent: 2788702 (1957-04-01), Baum
patent: 3641320 (1972-02-01), Stockham et al.
patent: 3809480 (1974-05-01), Somerville et al.
patent: 3830966 (1974-08-01), Hofstein
patent: 3941477 (1976-03-01), Schodl
patent: 4206999 (1980-06-01), Keller
"Principles and Practice of Laser-Doppler Anemometry," by F. Durst, et al., Academic Press, 1976, pp. 1-3.
McCreath, C. G. et al., "A Technique for Measurement of Velocities and Size of Particles in Flames" J. Phys. E. Sci. Instrom. (GB), vol. 5, No. 6, 6/72.
Arnold Bruce Y.
National Research Development Corporation
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