Device for measuring the mass of particles of an aerosol per...

Details Device for measuring the mass of particles of an aerosol per... Device for measuring the mass of particles of an aerosol per...

G - Physics

01

N

324/39

G01N 27/00 (2006.01)

Patent

CA 1040266

ABSTRACT OF THE DISCLOSURE The specification describes an improved method and apparatus for measuring the density of an aerosol. The apparatus generally includes a housing containing a planar surface, whose resonant frequency is dependent upon a deposit of aerosol particles, and a metallic point whose axis is perpendicular to the planar surface. The deposit of moving aerosol particles on the surface is normally caused by a high voltage electric current between the surface and point but rather than connecting the point to a negative terminal it is connected to a positive terminal. This has been found to provide unexpected advantages and overcomes draw- backs of prior art devices as described in the specification.

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