The measurement of bipolar charge on aerosols

This paper describes a novel automatic method for measurement of bipolar charge on aerosols. The developed system is dedicated to measuring aerosols existing in the form of short duration, high velocity plumes with a wide angle of particle dispersion. The system incorporates a front-end cylindrical arrangement consisting of two “D” shaped precipitation sections followed by a series of charge sensing electrodes. Apart from theoretical and construction details, the results of the experimental tests carried out with unipolarly and bipolarly charged aerosols are presented.