This master thesis deals with numerical simulation of laboratory measuring station employing electrostatic measuring method with inserted rod probe and pneumatic conveying of solid particles. It describes the whole numerical experiment: creation of geometrical model and mesh, selection of appropriate physical models and defining boundary conditions for numerical simulations. Ansys Fluent was used as the numerical tool. Actual experiments done on mentioned measuring station with pulverized coal were simulated. With the analysis of results key parameters of numerical model were determined. In the final part mutiregression model is set for computing voltages on electrostatic probe with the results of numerical simulations i.e. velocity of particles and number of collisions.