Abstract: An example pressure-sensing device includes a pipe or conduit having upstream and downstream connectors for respective upstream and downstream transducers to measure fluid (e.g., water) flow. The conduit may be made at least in part of a resiliently deformable material. A deformable electrode of a capacitor may be mounted in contact with a dry-side surface of an area of the resiliently deformable material. The wet-side surface of the area may define part of a pathway for a flow of the fluid. In operation, the area of the resiliently deformable material changes a location and/or a shape of the deformable electrode in response to changes in fluid pressure. A fixed electrode of the capacitor is separated by a dielectric material (e.g., air or an insulator) from the deformable electrode, and a circuit determines a pressure of the fluid based at least in part on a capacitance between the deformable electrode and the fixed electrode.

Abstract: A turbine water meter includes plural spinner blades rotatably mounted in a chamber. The respective blades have cross-sections with semi-parabolic edges, with each blade having respective elements connected together by mechanical reinforcing elements.

Abstract: The invention relates to a spinner (1) for a fluid meter, in particular a water meter, the spinner being designed to be mounted to rotate in a cylindrical chamber (2) of a meter vessel and comprising a plurality of blades (10), each blade presenting a cross-section with semi-parabolic edges and having a free tip (10?) shaped to be tangential to the wall of said chamber. According to the invention, each blade is constituted by two semi-parabolic walls connected together by mechanical reinforcement elements (10A, 10B, 10C).