The Medgas Flow available in 2 versions: primary and secondary network Primary network version: Placed at the start of the primary network, just after the oxygen supply source (generator, central bottles évaporatuer), the Medgas measures the flow rate / total oxygen consumption of the health facility. For health facilities do not have oxygen generator, It also allows you to control the oxygen volumes billed by the gas. Secondary network Version: Placed in each hospital department, from each secondary network distribution of oxygen after the second expansion regulators (two-stage networks, french type) or block valves (single stage system, English type), the Medgas Flow allows measure the flow / oxygen consumption of each service.