Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Wireless device and communication control method
Controller
Electrode for a plasma torch
Soliciting first party in communication session to maintain call when degradation of connection to second party is anticipated
Stroboscopic light source for a transmitter of a large scale metrology system
High performance adaptive switched LED driver
Method for preparing a .beta.-SiAlON phosphor
  Randomly Featured Patents
Wireless transmission method and wireless transmission apparatus
Wrap-around bend test method and apparatus
Jump-rope training exercise device
Storage and retrieval system
Apparatus and method for laser driver operation
Content transmission/reception system
Apoptosis inducer
Method of manufacturing a full faced steel vehicle wheel
Apparatus for enclosing a boat hull
Base station and mobile communication system