Pitot tube flowmeter, gas analysis device, and gas analysis method

Abstract

The present invention makes a pitot tube type flowmeter less affected by the flow velocity distribution caused by the flow passage shape on the upstream side, and includes a pitot tube having total pressure holes for detecting a total pressure of a fluid and static pressure holes for detecting a static pressure of the fluid, and a differential pressure sensor that is connected to the pitot tube and detects a differential pressure between the total pressure and the static pressure. The pitot tube includes a main tube portion, and a plurality of branch tube portions, which branches off from the main tube portion and in which the total pressure holes and the static pressure holes are formed. Each of the main tube portion and the plurality of branch tube portions has a shape that reduces a pressure loss.

Dependencies are inferred from the claim text.