Method and device for controlling the operation of a surface treatment system of a solid running substrate

The device for controlling a system comprising a processing device (2) in which scrolls the substrate (3) is characterized in that it comprises a processing unit information (10) receiving traveling speed information from the substrate in the device and connected to control means (14, 15) of gas supply means (7) and electric power (8), to regulate the flow of gas and the electric power supplied to the device, depending the speed of the substrate therein, in order to obtain an equivalent quality of surface treatment of the substrate regardless of the speed thereof in the device.