Particle measuring system and method

Details Particle measuring system and method Particle measuring system and method

2007-07-11

2009-10-20

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

With sample preparation

Condensation nuclei detector

C250S335000, C073S028020, C073S865500

Reexamination Certificate

active

07605910

ABSTRACT:
A particle measuring system and method is capable of separating particles on a size-by-size basis and measuring the number and size of the particles one by one on a real time basis. The particle measuring system includes a sampling device for guiding a stream of an aerosol containing particles suspended in a gas, an analysis device for separating one by one the particles contained in the aerosol, a filter for filtering out the particles contained in the aerosol to produce a filtered gas, a saturating device for saturating the filtered gas with working liquid to thereby produce a saturated gas, a condensing device for condensing the saturated gas to produce liquid droplets each having a nucleus formed of one of the particles, and an optical particle counter for calculating the number and size of the particles contained in the liquid droplets.

REFERENCES:
patent: 5026155 (1991-06-01), Ockovic et al.
patent: 6263744 (2001-07-01), Russell et al.
patent: 6639671 (2003-10-01), Liu
patent: 7471076 (2008-12-01), Ahn

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