Measuring and testing – Particle size
Patent
1997-02-05
1999-08-17
Noland, Thomas P.
Measuring and testing
Particle size
55447, 95 34, G01N 1502
Patent
active
059396490
ABSTRACT:
The invention concerns a dynamic particle mobility selector comprising two separate and parallel coaxial disks (30, 32) defining a dynamic selection zone (31), the upper disk comprising an annular slit with radius r.sub.1 and a central suction intake (38) in order to circulate a laminar, centripetal and stable air flow in the dynamic selection zone. An annular opening (36) with average radius r.sub.2 <r.sub.1 may be provided in the lower disk (32). Application to a dynamic mobility spectrometer, to a device for measuring the particle size of an aerosol and a mono-dispersed aerosol generator.
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Journal of Aerosol Science, vol. 15, No. 4, pp. 491-502, 1984, W.D. Griffiths, et al., "An Aerodynamic Particle Size Analyzer Tested with Spheres, Compact Particles and Fibres Having a Common Settling Rate Under Gravity" Month Not Given.
Journal of Aerosol Science, vol. 11, pp. 139-150, 1980, James Wilson, et al., "Aerodynamic Particle Size Measurement by Laser-Doppler Velocimetry" Month Not Given.
Proceedings of the Annual Conference of the GaeF, pp. 222-223, J.K. Agarwal, et al., "Real-Time Aerodynamic Particle Size Analyzer" 1982 Month Not Given.
Boulaud Denis
Pourprix Michel
Commissariat a l''Energie Atomique
Noland Thomas P.
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