Patent ID: 8316706

Claim:
A system element for the releasable sealed connection of a measurement recorder to a fluid system, with a measuring chamber that can be connected to the fluid system in such a way as to allow through-flow, wherein the measuring chamber is formed in a housing, and a part of the wall of the measuring chamber is formed by a membrane that is substantially more flexible than the remainder of the wall of the measuring chamber, wherein the part of the wall of the measuring chamber adjacent to the membrane forms an outer wall with an edge on which the membrane bears, and the membrane has a circumferential bead located on that side of the membrane facing the measuring chamber, characterized in that the bead engages in a recess that is formed in the housing around the outer wall and that extends around the measuring chamber, and protruding pins are arranged in the area of the recess around the outer wall, and holes are provided in the bead of the membrane, such that the pins engage in the holes in the bead of the membrane; and characterized in that a retaining ring is also provided, which engages around the edge of the outer wall of the measuring chamber and which is fixed relative to the housing.