G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 15/06 (2006.01) G01N 15/02 (2006.01) G01N 21/47 (2006.01) G01N 15/00 (2006.01)
Patent
CA 2330637
Devices and methods for measuring the concentration of airborne fibers (40) are provided. The devices include flow means for providing laminar flow to a portion of the fibers in an air sample (20) and a light source (9) for generating a light beam directed to the laminarly flowing fibers (20) to produce a scattered light. The device further includes a sensor (14) for sensing a portion of this scattered light and for producing an output from which a respirable fiber concentration estimate can be measured.
L'invention concerne des dispositifs et procédés servant à mesurer la concentration de fibres en suspension dans l'air. Ces dispositifs comprennent des moyens d'écoulement destinés à faire s'écouler de manière laminaire une portion des fibres contenues dans un échantillon d'air, ainsi qu'une source lumineuse servant à produire un faisceau lumineux dirigé sur les fibres s'écoulant de manière laminaire, afin de produire une lumière diffusée. Ce dispositif comprend en outre un capteur destiné à détecter une portion de cette lumière diffusée et à produire une sortie à partir de laquelle il est possible de mesurer une estimation de la concentration de fibres respirables.
Bereskin & Parr
Certainteed Corporation
LandOfFree
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