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Proceedings Paper

Miniature Light Scattering Systems For On-Line Process Particle Size And Velocity Measurement
Author(s): R. G. W. Brown; J. G. Burnett; K. Chow; J. G. Rarity
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Paper Abstract

Light scattering techniques for velocity and particle size analysis are well established research and industrial tools. In general, light scattering instruments have been large and expensive, requiring skilled operation. We have constructed and tested a range of light scattering instruments in miniature form using the recently available range of new semiconductor laser diodes, avalanche and PIN photodiodes and optical fibres. Thus is has been possible to demonstrate laser Doppler and transit anemometers for turbulent flow analysis and dynamic light scattering instruments for particle size analysis all of which are small and cheap enough to be of value in on-line process monitoring and control. We describe the critically important features of the new technologies used, and how we have coupled new devices together into systems for industrial applications of importance eg biotechnology, pharmaceuticals, automobile, aerospace, chemicals, etc.

Paper Details

Date Published: 10 March 1989
PDF: 6 pages
Proc. SPIE 1012, In-Process Optical Measurements, (10 March 1989); doi: 10.1117/12.949341
Show Author Affiliations
R. G. W. Brown, Royal Signals and Radar Establishment (United Kingdom)
J. G. Burnett, Royal Signals and Radar Establishment (United Kingdom)
K. Chow, PHLS (United Kingdom)
J. G. Rarity, Royal Signals and Radar Establishment (United Kingdom)

Published in SPIE Proceedings Vol. 1012:
In-Process Optical Measurements
Kenneth H. Spring, Editor(s)

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