Particle detection

Details Particle detection Particle detection

G - Physics

01

N

G01N 15/02 (2006.01) B41J 2/12 (2006.01) G01N 15/10 (2006.01) G01N 15/14 (2006.01) G01R 29/14 (2006.01)

Patent

CA 2534844

Particle detection and characterising apparatus has an insulating tube (50) along which the particles flow. Five electrodes (51, 52, 55, 56) and (57) spaced along the outside of the tube are connected via amplifiers (61) and (62) to a processor (68) arranged to measure the charge on the particles. The apparatus also includes a laser (11) and photomultiplier tube (23) arranged to measure the size of the particles so that the nature of the particles can be characterised from their electrical charge and size.

La présente invention concerne un appareil de détection et de caractérisation des particules. Il comporte un tube isolant (50) le long duquel s'écoulent les particules. Cinq électrodes (51, 52, 55, 56 et 57), disposées de place en place le long de l'extérieur du tube, sont connectées, via des amplificateurs (61, 62), à un processeur (68) agencé de façon à mesurer la charge des particules. L'appareil comporte également u laser (11) et un tube photomultiplicateur (23) agencés pour mesurer le calibre des particules de façon à pouvoir caractériser la nature des particules à partir de leur charge électrique et de leur calibre.

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