Abstract: A measurement chamber, and a device for measuring pressure in a fluid, the device including a coupling element, at least one pressure transducer and at least one measuring chamber that can be filled with a fluid. The measurement chamber is mechanically coupled to the measurement surface of the pressure transducer by a membrane. The measurement chamber has at least two connection points for a fluid flow. The at least one pressure transducer is arranged in the coupling element, and the at least one measurement chamber has two outer webs opposite each other, one of the webs engaging a clamping edge of the coupling element and the other web engaging a pressing roller. The pressing roller is rotatably supported and can be connected to the coupling unit in a force-closed manner.