Assembly comprising a gas distribution installation and a portable data storage and processing system distinct from the installation, said installation comprising: - a housing suitable for receiving at least one gas cylinder and having a gas input opening and a gas output opening; - a system of gas ducts arranged in said housing to which said at least one gas cylinder is connected; - a gas distribution system linked to said output opening allowing an equipment item to be supplied, - at least one communication port and a programmable logic controller, said logic controller being provided with a processor capable of processing data originating at least partly from the portable data storage and processing system distinct from the installation, said data being used to manage control and/or maintenance parameters of said gas distribution system such as: - the opening or closing of valves included in said system of ducts, - the launching of a bleed cycle, - the gas distribution, - the management of the pressure and/or of the temperature of said gas distribution system, - the heating of said at least one gas cylinder, the installation further comprising a human-machine interface connected to said logic controller, said assembly being characterized in that - the human-machine interface comprises a touch screen whose size is less than or equal to 12 inches, preferably less than 6 inches, - the logic controller is controlled by the portable data storage and processing system distinct from the gas installation, said portable data storage and processing system distinct from the installation being chosen from among a tablet, a smart telephone such as a smartphone, and a portable computer, - the portable data storage and processing system distinct from the installation contains control and/or maintenance parameters of said gas distribution system that are not accessible on the human-machine interface such as the parameters of the pressure and temperature sensors, the resistive heating of said at least one gas cylinder when the gas distributed is in liquified form, - said assembly further comprising a member for physically locking communication between said data storage and processing system and the installation. - a housing suitable for receiving at least one gas cylinder and having a gas input opening and a gas output opening; - a system of gas ducts arranged in said housing to which said at least one gas cylinder is connected; - a gas distribution system linked to said output opening allowing an equipment item to be supplied, - at least one communication port and a programmable logic controller, said logic controller being provided with a processor capable of processing data originating at least partly from the portable data storage and processing system distinct from the installation, said data being used to manage control and/or maintenance parameters of said gas distribution system such as: - the opening or closing of valves included in said system of ducts, - the launching of a bleed cycle, - the gas distribution, - the management of the pressure and/or of the temperature of said gas distribution system, - the heating of said at least one gas cylinder, the installation further comprising a human-machine interface connected to said logic controller, said assembly being characterized in that - the human-machine interface comprises a touch screen whose size is less than or equal to 12 inches, preferably less than 6 inches, - the logic controller is controlled by the portable data storage and processing system distinct from the gas installation, said portable data storage and processing system distinct from the installation being chosen from among a tablet, a smart telephone such as a smartphone, and a portable computer, - the portable data storage and processing system distinct from the installation contains control and/or maintenance parameters of said gas distribution system that are not accessible on the human-machine interface such as the parameters of the pressure and temperature sensors, the resistive heating of said at least one gas cylinder when the gas distributed is in liquified form, - said assembly further comprising a member for physically locking communication between said data storage and processing system and the installation.