The theoretical study results concerning the superhigh-frequency Doppler primary converter can be used, e.g., in the express analysis of critical process parameters of granular and gas-liquid flows in dielectric pipelines such as continuity of the gas-liquid flow, the transported medium humidity, mass flow rate, and the substance density depending on the pipeline dimensions (the pipeline cross-sectional area, measuring section length), etc. In this case, the information parameters can be the resonance frequency, amplitude, and phase of EM oscillations interacting with flows. As per the frequency-tracking system theory, the provisions forming the basis for building it will, undoubtedly, allow performing the statistical analysis of randomly changing processes more efficiently and reliably and using it in regression and correlation analysis between one dependent and several independent values when processing these quantities while simplifying the process control algorithm.