Computer controlled constant concentration and size...

Details Computer controlled constant concentration and size... Computer controlled constant concentration and size...

G - Physics

05

D

341/5

G05D 7/00 (2006.01) F24F 11/00 (2006.01) G05D 11/13 (2006.01) G05D 22/02 (2006.01)

Patent

CA 1222300

ABSTRACT An aerosol generating system for maintaining a constant concentration of aeresol in a chamber is disclosed. The system includes an aerosol generator in a closed chamber. A small fan in the chamber distributes the aerosol within the chamber. A particle analyzer connected to the chamber draws aerosol samples and analyses samples to monitor at least one characteristic property of the aerosol. Typically, these are particulate concentration and par- ticulate size. The system includes a control responsive to signals from the analyzer representing changes in the monitored character- istic property to control operation of the aerosol generator. The control is such as to maintain the characteristic property substan- tially constant. The system may also be equipped with humidity and temperature control elements for maintaining these factors constant within the chamber.

461480

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