Signal Quality of Dual-tip Electrical Conductivity Probe for Measurement of Bubble Parameters
HAN Mei SHA Zuo-liang WU Qian WANG Tie-feng WANG Tie-feng WANG Jin-fu
College of Marine Science and Engineering, Tianjin University of Science & Technology College of Marine Science and Engineering, Tianjin University of Science & Technology Department of Chemical Engineering, Tsinghua University Department of Chemical Engineering, Tsinghua University College of Marine Science and Engineering, Tianjin University of Science & Technology Department of Chemical Engineering, Tsinghua University
Abstract： A dual-tip conductivity probe for measurement of bubble parameters in a gas-liquid flow was studied. The effects of the probe structure, measurement circuit and sampling method on the bubble signal quality measured with the probe were investigated, and the measures to improve the signal quality were proposed. The experimental results show that the signal response is faster when the conductive length of probe tips is smaller. This effect becomes insignificant when conductive length is smaller than 0.025 mm. The probe tip should be connected to the cathode of measurement circuit to avoid the electrical oxidation corrosion that caused damage of the probe tip. The better bubble signal response is obtained by using optimum electrical resistance in the measurement circuit with smaller electrical resistance of the probe tip. The improved signals with large difference of 3 V, fast response and little noise are obtained with the optimal conditions.
韩梅 伍倩 张念 王铁峰 沙作良 王金福. 双探针电导探头测量气泡参数的信号质量[J]. , 2009, 9(2): 222-227.
HAN Mei SHA Zuo-liang WU Qian WANG Tie-feng WANG Tie-feng WANG Jin-fu. Signal Quality of Dual-tip Electrical Conductivity Probe for Measurement of Bubble Parameters. , 2009, 9(2): 222-227.
2009, Vol. 9 
