EN
In the paper the system EUDW-2 is presented. It is applied in additional carbon dioxide feeding in greenhouse cultivations. The system consists of: - the control-steering system; - low pressure installation providing CO₂ in greenhouse cultivations; - pressure tank (or aggregate of cylinders) with liquid CO₂, and complementary equipment witlt the supplying central main. The aplication of the two-processor computer controlling the work of the system assures the highest safety degree of work with liquid carbon dioxide. The described system can serve independently seven greenhouses with individual additional feeding system and it controls the concentration level of carbon dioxide in the air of the link in wich usually there is the central main supplying gas to particular greenhouses. In case of bigger greenhouse farms where only one gas source is applied, there is a possibility of manifold increase of control-steering equipment (system). The program of the computer includes the data, advised by the producer of the control-steering systems, concerning additional feeding of carbon dioxide to greenhouse cultivations. It is also possible to introduce all parameters work of the system manually using a simple and easy to operate control desk. Moreover the history of the work of the system is remembred in chronological arrangement. There is also a possibility of controlling work of the system EUDW-2 using the IBM-PC computer.