Vortex shedding flow meters

Vortex shedding flow meters

Principles of Operation
Vortices are created when a fluid passes around a bluff body as shown below. Vortices are alternately shed on each side of the body, 180 degrees out of phase to each other, resulting in an oscillating pressure gradient. As flow increases the frequency of vortices increases in proportion to the increased flow thereby creating a linear relationship. Aalborg’s unique dual signal processing technology independently measures each vortex on either side of the bluff body and filters out non-flow noise. This results in less noise and higher accuracy throughout the flow range. Dual signal processing technology independently measures each vortex providing increased accuracy and turndown.

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VX literature
model VX vortex flow meter catalog page(s)

Rotameter Catalog
Full line Rotameter and Valves Catalog EM200710

Thermal Mass Flow Catalog
Full line Mass Flow and electric Valves Catalog EM200710