The invention relates to a device for providing pressurized fluid. The device includes a first functional assembly including a pressurized fluid bottle having an opening having attached therein a first tap including an inner fluid circuit including an insulating valve. The device includes a second functional assembly forming a physical entity separate from the first assembly. The second assembly includes a second tap having an inner fluid circuit. The first tap and the second tap include respective coupling members forming a removable rapid connection system. The device includes in the first assembly at least one electronic data storage communication unit that is removably, wirelessly queryable via electromagnetic waves and in that the second assembly includes at least one electronic communication unit for removably, wirelessly reading, via electromagnetic waves, data from the electronic member of the first assembly.

A cryogenic cylinder including authenticating features and an apparatus recognizing the features and facilitation the cylinder use. The authenticating features prevent use of an unauthorized cryogenic cylinders. The cylinder also includes a number of mechanical features preventing repeat filling of the cylinder by cryogenic fluid or reuse of the cylinder once empty.

A method for controlling a monitoring unit for the residual supply time for the gas present in a pressurized container includes associating with a plurality of angular positions respective residual time values in accordance with a selected flow; measuring the angular position of the control element by means of a magnetic tunnel effect angle sensor. A residual time value is determined in accordance with the selected flow corresponding to the angular position of the rotary control element; measuring an intensity of the magnetic field by means of the magnetic tunnel effect angle sensor TMR. A limit intensity value is defined for the magnetic field. A display device displays the residual time value in accordance with the selected flow only if the intensity of the magnetic field measured is less than the limit value.