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Vortex Flow Meters
Vortex flow meters measure the flow rate of liquids, gases and steam by measuring the differential pressure of vortexes created in a substance's flow. The construction of the meter is fairly simple: an obstruction is placed directly in the flow path, forcing liquids or gases to move around it. When the flow moves around this obstruction, or "bluff body", two symmetrical vortices are created on the opposite side, changing the pressure of the flow. A sensor is placed between these vortices to measure these changes in pressure, transmitting this data to an electronic signal conditioner outside the meter.
Because the principle used in the vortex flow meter is naturally occurring and requires no moving parts, vortex flow meters can measure a wide range of viscosities and do not depend upon uniform density. Vortex flow meters are highly resistant to vibration, unlike other types of mass flow meters, and for this reason may be used in harsh processes and environmental conditions.
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