Optics: measuring and testing – With sample preparation – Condensation nuclei detector
Patent
1989-02-10
1990-08-21
Raevis, Robert
Optics: measuring and testing
With sample preparation
Condensation nuclei detector
G01N 100
Patent
active
049500732
ABSTRACT:
An apparatus for detecting submicron particles in air includes a saturator for saturating a sample stream of the air with a vapor of a low volatility liquid and a condenser for cooling the vapor to form droplets around the particles to result in particles of a size detectable by an optical detector. Conduits extend through a bath of the liquid in the saturator so that sample streams passing through the conduits are heated by the bath. A flow divider divides a single sample stream at the inlet of the saturator into a plurality of laminar flow streams corresponding in number to the conduits. The condenser is a heat exchanger having a plurality of tubes with funnel-shaped inlet ends positioned over the bath of the saturator, and the tubes are inclined toward their inlet end so that condensed vapor flows back into the bath. A method for detecting particles in various size ranges involves operating the saturator at different temperatures to vary the minimum size particle which can be grown by condensation to a detectable size.
REFERENCES:
patent: 3462609 (1969-08-01), Beattie
patent: 3694085 (1972-09-01), Rich
patent: 3806248 (1984-04-01), Sinclair
patent: 4449816 (1984-05-01), Koshaka et al.
patent: 4790650 (1988-12-01), Feady
patent: 4792199 (1988-12-01), Borden
patent: 4794789 (1989-06-01), Natako
Nesti, Jr., "The Condensation Nuclei Counter as an Air Pollution Weapon", No date.
Pacific Scientific Company
Raevis Robert
LandOfFree
Submicron particle counting enlarging the particles in a condens does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Submicron particle counting enlarging the particles in a condens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Submicron particle counting enlarging the particles in a condens will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1673192