STLU Series vortex flowmeter is a very versatile flow meter that can be used for flow metering, measurement and control of virtually all gases, liquids and vapors. It is worked on Karman Street principle and is a kind of volumetric flow meter.A Vortex flow meter is a type of flowmeter that has changed and improved over the years. This flow meter is designed to measure the volume, mass flow of liquids, gases, and vapors, and it all does according to the Karman vortex principle. The Vortex type flow meter is used to measure the flow rate of a gas or liquid in a fully flowing pipeline. They have a high accuracy class because of the advanced differential algorithm used for flow calculation.Vortex flow sensor has high signal insulation and resistance to vibration and noise. Electronic vortex flow transmitter can display the linear value of the compensated mass flow. It is most commonly used to measure steam or vapor flow because of its accuracy.