A Feasibility Study of Ion Balance Measurement by Partial Surfaces

This paper reports a feasibility study of the ion balance measurement by the partial surfaces. The partial surfaces were exposed under the dc corona ionizer which could be varied ion balance. The appearance of electrostatic potential, which is caused by the imbalance of positive and negative ions, was measured by the high impedance electrostatic voltmeter. The result from these partial surfaces was compared with the standard test method which is using the 6″×6″ charged plate. The average voltages of all segments of the partial surfaces are correlated to the electrostatic potential values which were measured by the standard 6″×6″ charged plate. Moreover, the partial surfaces offer the fine-grained level of results. It validates that the precision of the ion balance measurement can be improved by the partial surfaces.