Resources Contact Us Home
Method for aerodynamic particle size analysis

Image Number 4 for United States Patent #5949001.

A method is provided for measuring the aerodynamic particle size distribution of airborne particles by drawing the particles through a device which continuously or intermittently changes the aerodynamic cut of the particles entering an optical sensor. Optical sensing is performed by aerosol photometry or optical single particle size spectrometry. If aerosol photometry is used, the aerosol photometer becomes an aerodynamic particle size spectrometer by relating the aerosol photometer's output to the aerodynamic particle size fractions passing through the aerodynamic cut device. If optical single particle size spectrometry is used, the optical single particle counter becomes an aerosol particle size spectrometer by calibrating the optical sizes of the optical single particle counter relative to the aerodynamic particle sizes determined by the aerodynamic cut device.

  Recently Added Patents
Data processor and scanner device
Transport of multiple asynchronous data streams using higher order modulation
Bias voltage generating circuit and switching power supply thereof
Apparatus and method of managing radio bearer in wireless communication system
Method for olympic event hospitality program management
Method and system for security authentication of radio frequency identification
System and method for stranded file opens during disk compression utility requests
  Randomly Featured Patents
Row unit for an agricultural harvester
Cleaner for hydrophilic metal surfaces of lithographic duplicators
Wireless communication apparatus
Apparatus for the rapid continuous corona poling of polymeric films
Angiotensin II antagonists
Method of preparing and using isoflavones for the treatment of female symptoms
Ignition control apparatus for an internal combustion engine
OCB type liquid crystal display having transition nucleus area from splay alignment to bend alignment
Device for feeding filters to a filter assembly machine
Tamper evident closure with reclose feature