Vortex flowmeters measure flows of liquid, gas and steam by detecting the frequency at which vortices are alternatively shed from a bluff body. According to proven laws and physics, the frequency at which the vortices are shed is directly proportional to the flow velocity.
As flow passes a bluff body in the flow stream vortex meter, the vortices create low and high pressure zones behind the bluff body, or shedder bar. Our vortex flow meters are designed with a piezoelectric crystal sensor to detect the pressure exerted by the vortices on the velocity sensor. The sensor converts these “pulses” into electrical signals which are then converted to a frequency by the meter`s electronics allowing the volumetric flowmeters to calculate the volumetric flow rate to be determined. Additionally, each vortex flowmeter we design features an all welded sensor design which creates a robust sensor and to minimize potential leaks.
With the addition of the optional integrated temperature and pressure sensors, the flow meter can then calculate and output the mass flow rate as well as volumetric flow, temperature, pressure, and density.
Insertion Vortex Flowmeters
Insertion vortex meters measure flow by detecting the local velocity at a strategically located position within the pipe. Our Pro-V™ Model M23 detects the frequency at which vortices are shed from the bluff body located within the sensor head and then converts this to a volumetric flow in the electronics. The Pro-V™ Model M23 also uses the local velocity, along with other parameters, such as fluid type, pipe size and Reynolds number to calculate the average pipe velocity, and consequently, the volumetric flow rate.
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