Differential pressure means for a gas meter arrangement, comprising an improved flow geometry

A differential pressure means for a gas meter arrangement which comprises a gas meter in a bypass to a gas pipe for measuring a gas consumption through the gas pipe, the differential pressure means being designed to be mounted in the gas pipe and having a plurality of flow ducts, which have a typical diameter, flow ducts being provided in various radial positions on the differential pressure means, wherein

• a) those flow ducts which are arranged on the differential pressure means closer to a radial position which is close to the center have a larger diameter, and
• b) those flow ducts which are arranged on the differential pressure means closer to a radial position which is close to the perimeter have a smaller diameter.

A gas meter arrangement for measuring a gas consumption, comprising a gas meter, which is arranged in a bypass to a gas pipe, and a differential pressure means which is arranged in the gas pipe and has a plurality of flow ducts, which have a typical diameter, flow ducts being provided in various radial positions on the differential pressure means, wherein

• a) those flow ducts, the radial position of which lies closer to an inlet port of the bypass, have a smaller diameter, and
• b) those flow ducts, the radial position of which is further away from an inlet port of the bypass, have a larger diameter.