Nitrox-mixtures production machine

Nitrox-mixtures production machine (1) comprising:

• a molecular separator (2), which is structured so as to receive at inlet a flow of air and to provide at outlet an intermediate Nitrox mixture with high oxygen percentage;
• a low-pressure compressor (3), which is adapted to feed an airflow at inlet of the molecular separator (2);
• a mixing manifold (4) which communicates with the molecular separator (2) so as to receive said intermediate Nitrox mixture, and is structured so as to mix the intermediate Nitrox mixture with fresh air coming from the outside, in order to provide at outlet a final Nitrox mixture with predefined composition;
• and at least one oxygen sensor (5), which is adapted to measure the oxygen percentage present in said final Nitrox mixture;
• said Nitrox-mixtures production machine (1) being characterized by additionally comprising an electronic control device (6), which is connected to said at least one oxygen sensor (5) and is adapted to regulate the flowrate of the air that the low-pressure compressor (3) feeds at inlet of the molecular separator (2) based on the signals coming from said at least one oxygen sensor (5).