Pressure determination device and method for operating a pressure determination device

A method for operating a pressure determination device for determining the pressure in a fuel storage arrangement, the pressure determination device, with the following

• a connection element for connecting the pressure determination device to the fuel storage arrangement,
• a first chamber,
• a connecting line for communicating connection of the interior of the connection element to the first chamber,
• a second chamber,
• a membrane,
• and a switch,
• wherein the first chamber is made separated fluid-tight from the second chamber at least by means of the membrane, and the membrane made for actuating the switch at least depending on the pressure of the fluid in the first chamber, in which fluid flows through the interior of the connection element, the connecting line and the first chamber and the fluid in the connecting line is damped by means of a vibration damping element through which the fluid flows.

A method of sensing a variation in pressure of a gas in a storage member, comprising:

• dampening the vibrations of a flow of said gas;
• supplying said flow of vibration dampened gas into a first chamber of a compartment separated into two chambers by a flexible diaphragm;
• providing a second gas of a known pressure in the other of said chambers;
• and
• detecting the pressure differential across said diaphragm as a function of the flexing thereof.