Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1998-05-01
2000-09-19
Kim, Robert H.
Optics: measuring and testing
By particle light scattering
With photocell detection
356343, G01N 2100
Patent
active
06122054&
ABSTRACT:
Devices and methods for measuring the concentration of airborne fibers are provided. The devices include flow means for providing laminar flow to a portion of the fibers in an air sample and a light source for generating a light beam directed to the laminarly flowing fibers to produce a scattered light. The device further includes a sensor for sensing a portion of this scattered light and for producing an output from which a respirable fiber concentration estimate can be measured.
REFERENCES:
patent: 4473296 (1984-09-01), Shofner et al.
patent: 4737648 (1988-04-01), Smith et al.
Certain-Teed Corporation
Kim Robert H.
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