Super User Vortex Flow Meters Vortex Flow Meters for accurate and direct flow measurement of liquids, gas and steam. InnovaMass 240i Inline iSeries Next Generation Vortex Flow Meters With multivariable capability it is easier to maximise your steam productivity and reduce overall cost of ownership. InnovaMass 240S Inline Vortex Flow Meters Highly reliable with no moving parts. Mass & Volumetric flow monitoring of most gases, liquids and steam. Pro-V Model M22 Inline Vortex Flow Meters Monitoring for most liquids, gases, and steam while delivering direct readings of volumetric flow rate. Pro-V Model M23 Insertion Vortex Flow Meters Volumetric or Mass flow monitoring for most liquids, gases, and steam. Highly reliable with no moving parts. Vortex flowmeters make use of a principle called the von Kármán effect. According to this principle, flow will alternately generate vortices when passing by a bluff body. A bluff body has a broad, flat front. In a vortex meter, the bluff body is a piece of material with a broad, flat front that extends vertically into the flow stream. Flow velocity is proportional to the frequency of the vortices. Flowrate is calculated by multiplying the area of the pipe times the velocity of the flow. In some cases, vortex meters require the use of straightening vanes or straight upstream piping to eliminate distorted flow patterns and swirl. Low flowrates present a problem for vortex meters, because they generate vortices irregularly under low flow conditions. The accuracy of vortex meters is from medium to high, depending on model and manufacturer. In addition to liquid and gas flow measurement, vortex flowmeters are widely used to measure steam flow. The main advantages of vortex meters are their low sensitivity to variations in process conditions and low wear relative to orifices or turbine meters. Also, initial and maintenance costs are low. For these reasons, they have been gaining wider acceptance among users. Read more about how Vortex Flow Meters work HERE Sierra Instruments are known as global leaders in manufacturing high quality mass flow meters.