Model 3321 Aerodynamic Particle Sizer （3321型气动粒子筛选器）.pdf

P a r t i c l e I n s t r u m e n t s Model 3321 Aerodynamic ® Spectrometer Particle Sizer High-resolution aerodynamic sizing plus light-scattering intensity! The Model 3321 Aerodynamic Particle Sizer® The ability to provide (APS) spectrometer is a high-performance, general- two measurements of each purpose aerosol instrument. Its unique design pro- particle using the same sen- vides two measurements: sor allows you to gain excit- ing new insights into the Aerodynamic diameter. The APS sizes particles makeup of an aerosol. The in the range from 0.5 to 20 micrometers using a APS uses a patented*, dou- sophisticated time-of-flight technique that mea- ble-crest optical system to sures aerodynamic diameter in real time. Because detect the occurrence of par- time-of-flight aerodynamic sizing accounts for par- ticle coincidence (when ticle shape and is unaffected by index of refraction more than one particle is in the detection area) and or Mie scattering, it is superior to sizing by light to identify poor signals near the instruments lower scattering. In addition, the monotonic response detection threshold. This results in robust, high- curve of the time-of-flight measurement ensures quality measurements you can trust. high-resolution sizing over the entire particle A well-designed and size range. easy-to-use front panel in-