Abstract: An adapter for a pressure vessel comprising a first connection for coupling to a device for filling and/or withdrawing a fluid, in particular a gas, a second connection for a fluid-tight connection with the pressure vessel, and a line section. The line section extends along a longitudinal axis and connects the first connection with the second connection and thereby a gas-permeable connection between the first connection and the second connection exists or can be established via an interior space. At least one sensing unit s set up to detect at least one physical quantity and to convert it into at least one measurement signal. An evaluation unit is connected to the sensing unit and the evaluation unit is set up to process and/or evaluate the measurement signal and to make it available as an output signal via the communication interface.

Abstract: A sensor for detecting pressure and/or filling level and/or flow rate and/or density and/or mass and/or temperature, wherein a sensor component is coupled to a further sensor component by nanowires, and wherein the sensor components are fixed, sealed or electrically contacted to one another. For example, a sensor component is connected directly to a printed circuit board through nanowires.

Abstract: A sensor for detecting pressure and/or filling level and/or flow rate and/or density and/or mass and/or temperature, wherein a sensor component is coupled to a further sensor component by nanowires, and wherein the sensor components are fixed, sealed or electrically contacted to one another. For example, a sensor component is connected directly to a printed circuit board through nanowires.