Pneumatic conveying is widely used in chemical process

and a series of researches are carried out to measure gas-solid two-phase flow parameters.By introducing non-parametric kernel estimation method of statistics

combining the goodness of fitting and simulation data samples

the mathematical model which satisfies the Gaussian distribution is finally fitted.And the electrostatic signal satisfying the Gaussian distribution is given in the theory.The electrostatic sensor measurement system is reformed so that the signal output line can be extended to 2～3 m

which provides convenience for the measurement of subsequent equipment.Maxwell simulation software is used to obtain the effects of different sensor parameters on spatial sensitivity characteristics.Finally

experiments are carried out on experimental equipment

and the conclusions obtained in the article are confirmed.