Dekati Oy

Tsi, Inc.

Tyler Beck

Leo Holma

Ville Niemelä

Sami Lundahl

Stanley L Kaufman

Peter P Hairston

Charging unit for a particle monitoring apparatus, and a particle monitoring apparatus

A particle measuring apparatus includes a distributor unit arranged to provide a first partial flow and a second partial flow by separating the second partial flow from an input flow, a particle collecting unit to collect particles from the first partial flow by using a first filter, and a particle monitoring unit to form charged particles by charging particles carried by the second partial flow, and to provide an electric current by collecting the charged particles.

Method and apparatus for measuring aerosol particles of exhaust gas

Method and apparatus for measuring aerosol particles suspended in gas

Particle analyzing systems with fluorescence detection are disclosed, primarily in connection with particle sizing based on scattered light intensity or time-of-flight measurement. In one system, emission of fluorescence is used as a threshold for selecting particles for further analysis, e.g. mass spectrometry. In another embodiment, laser beams arranged sequentially along an aerosol path are selectively switched on and off, to increase the useful life of components, and diminish the potential for interference among several signals. Other embodiments advantageously employ color discrimination in aerodynamic particle sizing, single detectors positioned to sense both scattered and emitted fluorescent radiation, and laser beam amplitude or gain control to enhance the range of fluorescence detection.

Analysis systems detecting particle size and fluorescence

Growing community of inventors

Vadnais Heights, MN, United States of America

Tyler Beck