Wafer-Cone flowmeter

The Wafer-Cone flowmeter features a modular design that allows users to replace the flow element in order to adapt the device to changing flow conditions in dynamic processes. It uses differential pressure technology with built-in flow conditioning to achieve an accuracy of ±0.5% and a repeatability of ±0.1%. The pressure difference between the static line pressure and the low pressure downstream at the cone is measured via two pressure-sensing taps, and is then used with a derivation of the Bernoulli equation to calculate the fluid flowrate. The flowmeter is designed for liquid or gas service and is available in line sizes from 0.5 in. to 6.0 in., which makes it suitable for use in natural gas wells and in small process lines. A self-conditioning-flow feature eliminates the need for the extensive upstream/downstream straight pipe runs that are required by similar technologies, such as orifice plates and venturi tubes. The meter can be installed independently anywhere in a piping system.