Patent ID: 7932490

Claim:
An instrument for measuring size segregated mass concentration of an aerosol, comprising: an electromagnetic radiation source operatively coupled with beam shaping optics for generation of a beam of electromagnetic radiation; an inlet nozzle for passage of an aerosol flow stream therethrough, said aerosol flow stream containing particles and intersecting said beam of electromagnetic radiation to define an interrogation volume, said particles scattering said electromagnetic radiation from said interrogation volume; a radiation collector for collection of a portion of said electromagnetic radiation scattered from said interrogation volume; a detector for detection of said portion of said electromagnetic radiation collected by said radiation collector; a plurality of signal conditioners including an integrated signal conditioner and at least one of a pulse height signal conditioner and a time-of-flight signal conditioner, each of said plurality of signal conditioners being operatively coupled to said detector and each generating a respective output; a digital processor operatively coupled with said plurality of signal conditioners for conversion of each of said respective outputs to a mass concentration and to at least one of an optical particle size and an aerodynamic particle size.