RADIOMETRIC IMPACTOR Russian patent published in 2009 - IPC G01N15/02 

FIELD: physics, measurement.

SUBSTANCE: invention is related to devices and may be used for separation of suspended particles from air and their division into fractions of available sizes. Radiometric impactor comprises body with measurement chamber, including sensitive element with accumulating screen installed at the inlet perpendicular to analysed flow, additionally it comprises at least one measurement chamber, including sensitive element with accumulating screen and installed with sensitive element plane to outlet part of previous measurement chamber. Besides sensitive elements are arranged in the form of radiation detectors installed with signal amplifiers on mounting plates, and outlet measurement chamber equipped with filter and elastic membrane from gas impermeable material with perforation in central part overlapped by filter installed on it and contacting with outlet detector in case analysed flow is not available.

EFFECT: measurement of spectrum of radioactive aerosols directly at the place of sampling, without extraction of accumulating screens and detection of particle spectrum by activity of fractions with detection of their mass.

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