Vortex flow meters can be used for a wide range of fluids including liquids, gases, and steam.
Vortex meters are essentially frequency meters, as they measure the frequency of vortices that are generated by a bluff body in the process line, which is known as “vortex shedding”.
How it Works
In a vortex flowmeter an obstruction in the flow path acts as a bluff body, this is sometimes known as a ‘shedder bar’. This ‘shedder bar’ forces the fluid to separate and form alternating areas of low pressure on the downstream side of the bar. These low pressure vortices cause a small sensing element either behind or within the shedder bar to oscillate back and forth at a specific frequency. The frequency of these vortices is directly proportional to the velocity of the fluid flowing past the bar and thus the volumetric flow rate of the fluid can be determined.
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Vortex flow meters can be used for a wide range of fluids including liquids, gases, and steam. Vortex meters are essentially frequency meters, as they measure the frequency of vortices that are generated by a bluff body in the process line, which is known as “vortex shedding”.
