A virtual evaluation of the quality index of oil extraction products from vegetable raw materials was carried out. The system of control and management in real time of the main and auxiliary processes of extraction of vegetable oils from oil–containing raw materials is described and represents a set of technological and auxiliary equipment (fine filters, pipelines, pumping pumps for sampling of final products through a sampling device, an automatic sampler, shut-off and control valves, etc.) and measuring instruments – converters of mass flow, density, moisture content,
temperature, pressure, processing, storage, display and registration of measurement results. As the main scheme for measuring the mass of the final product of production, the following are defined: indirect method of dynamic measurements using volume flow converters, in-line density converters, temperature and pressure transducers (or direct method of dynamic measurements using mass meters ).