A construction of particle counter by using laser light scattering
Conference proceedings article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Youthapolnavee A., Chewpraditkul W., Chaisawadi A.
Publisher: Hindawi
Publication year: 2009
Volume number: 1
Start page: 452
End page: 457
Number of pages: 6
ISBN: 9781424433889
ISSN: 0146-9428
eISSN: 1745-4557
Languages: English-Great Britain (EN-GB)
Abstract
A simple particle counting system was constructed by using laser light scattering technique. The main components consist of a 50 mW green laser diode (λ = 532 nm) and a Hamamatsu H5784 photomultiplier tube (PMT). The intensity of scattered light from a particle was measured with a PMT. The pulse height from a PMT is proportional to the size of a particle. The silica powder with the size of 75 μm, 100 μm and 150 μm were used as reference particles, winnowed by sieve and measured by image analyzer to ensure the reference size. Resulting in the pulse height of 100 mV, 200 mV and 400 mV respectively, from a PMT. The experimental results showed that an implementation of particle counter can be used to measure a quantity as well as an approximate size of the particles. ©2009 IEEE.
Keywords
Dust particle, Green laser diode, Light scattering, Particle counter, Photomultiplier tube
Contact Information