The measurement and control of mass flow rate of gas/solid two-phase flows have not been effectively solved for a long time in the industry.In this paper

a novel helical shaped surface plates capacitance transducer is designed for industrial point of view.It is based on the electrical capacitance tomography(ECT).The influence of the opening angle of electrode

the pipeline permittivity and pipeline thickness on sensitivity distribution and homogeneous error are analyzed by the method of finite element simulation.Through the simulation analysis

the range of model parameters can be fixed.Furthermore

it can provide the theoretical basis for development of sensitivity distribution

optimization of sensor and the performance of transducer.