专利名称：Apparatus for measuring the time-integrated volume specific activities and thepotential alpha energy of radon and thorondaughters in the air
发明人：Dobromir S. Pressianov,Metodi G.
Geilev,Orlin Y. Penchev
申请号：US07/816763申请日：19920102公开号：US05225673A公开日：19930706
摘要：An apparatus for determining the time-integrated volume specific activities ofradon and thoron daughters without the participation of an operator during themeasurement includes an air pump connected to a perpendicularly disposed pipe withplugged ends provided with two longitudinal rectangular orifices which are in contactwith two endless aerosol filter bands which are rotated by a clock mechanism at periodsof 1 hour and 12 hours respectively. Radiation detectors are disposed in seats of acylindrical support while the latter is disposed within a protective housing.
申请人：FIRMA NATURELLA - GROUP LTD.
代理人：Michael Marinangeli,Thomas A. Gallagher
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