Particle counter air inlet assembly

Details Particle counter air inlet assembly Particle counter air inlet assembly

1986-04-24

1988-05-24

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

250576, 356246, G01N 2105, G01N 2153

Patent

active

047462159

ABSTRACT:
The sample air inlet nozzle into a particle counter test cell is formed with an elongated, flattened tip to provide a thin, flat laminar flow jet which intersects a laser beam. A secondary tube surrounding the nozzle provides a sheath of air which helps maintain the jet shape.

REFERENCES:
patent: 2535181 (1950-12-01), Way
patent: 3766489 (1973-10-01), Rosenberg et al.
patent: 3840304 (1974-10-01), Hirafaji
patent: 3893766 (1975-07-01), Hogg
patent: 4343551 (1982-08-01), Eisent
patent: 4571079 (1986-02-01), Knollenberg
Royco Instruments drawing 401-7095, initially drawn on Jun. 5, 1969.
Royco Instruments drawing 102-6518, dated Apr. 8, 1969.
Article entitled "Calibration and Use of the Aerodynamic Particle Sizer (APS 3300) by Paul A. Baron, published 1986.

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