An everyday example of a vortex shedding phenomenon is a flag waving in
the breeze: the flag waves due to the vortices shed by wind moving across
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Flujómetro Vortex de Inserción para líquidos
RNL Series Insertion Liquid Flow Meter
An everyday example of a vortex shedding phenomenon is a flag waving in the breeze: the flag waves due to the vortices shed by wind moving across the flagpole. Within the flow meter, as flowing liquid moves across the strut or “bluff bar”, vortices are also shed but on a smaller scale.
The meter transmits an ultrasonic beam through the vortex pattern downstream of the strut. As vortices are shed, the carrier wave of the ultrasonic signal modulates. The modulation of the carrier wave is measurable and proportional to the number of vortices shed. Digital processing enables the vortices to be counted, and this value is converted into a velocity. Software converts velocity into a volumetric flow rate, in units of measure selected by the operator.
Racine vortex flow meters utilize the smallest strut in the industry, which allows for high sensitivity; superior performance at low flow rates and low pressure drop.