Measurements of charge density on powdery or granular media using the “open” Faraday's cage

Application of the measurements of a charge induced on the flat electrode placed at the bottom of a container, for the determination of total accumulated charge is discussed in the paper. The value of correction factor KQ, important for the numerical linking of both (accumulated and induced) charges, was determined numerically and experimentally. The values of KQ factors determined by various methods differ as 1:1.7, however application of the method of "open" Faraday cage in technological conditions is fully justified.