Measurement system of radio frequency admittance for micro-particles concentration

In the paper, based on the measurement of radio frequency admittance capacitance to micro-particles concentration of metallurgical slag, adopting sensor which has transformation and insulation electrodes with driving capability and equal electric potential (equal electric potential circle), the marginal loss by reason of material hanging to measurement electric field can be compensated, and by using special feedback operational transformation circuit for non-electricity, the impact on measurement results is reduced. There are mainly two methods of radio frequency admittance capacitance for particles concentration measurement, one is laminar imaging; and the other is radio frequency admittance capacitance sensor. In actual measurement, based on the spatial distribution of medium, we can adopt different structural probe sensor to improve the spatial resolution. So the measurement technology of radio frequency admittance capacitance is nearly an ideal method for solid phase particles concentration measurement.