Patent ID: 7464611

Claim:
Gas meter arrangement for measuring a gas consumption, especially in a private, public or industrial domain, 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, the flow ducts being provided in various radial positions on the differential pressure means, wherein: a) the flow ducts which have a radial position lying closer to an inlet port of the bypass, have a smaller diameter, and b) the flow ducts which have a radial position lying further away from an inlet port of the bypass, have a larger diameter, and at least one of c) an inlet port and an outlet port of the bypass are arranged on a side wall of the gas pipe; and d) a linear span of the bypass is selected to be larger than or equal to a total length of the differential pressure means and the differential pressure means is arranged in the gas pipe between the inlet port and the outlet port of the bypass, and wherein the gas meter is a CMOS anemometer.