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Electrostatic modelling and measurement of airborne particle concentration

By S.N. Murnane, R.N. Barnes, Steve Woodhead and J.E. Amadi-Echendu


Granular airborne particles generally carry very small amounts of electric charge as a consequence of charging by the triboelectric effect. The presence of such particles induces charge of opposite polarity on a stationary conducting electrode. The amount of charge carried by the particles and the trajectories of the particles have significant random components and the signals produced are of very low level. The signal processing is further complicated by the random variation in the concentration of particles, i.e., the solid/gas ratio. This paper compares the results obtained from the electrostatic modelling of such sensors with those obtained from experiments

Topics: QC
Publisher: Institute of Electrical and Electronics Engineers
Year: 1996
DOI identifier: 10.1109/19.492773
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