Vortex flow meter is a type of flow measurement device that operates based on the principle of vortex shedding.
Principle of Operation:
Vortex flow meters measure the flow rate by detecting the vortices that are shed by a bluff body (a non-streamlined object) placed in the flow stream.
As fluid flows past the bluff body, vortices are alternately shed from either side, creating a repeating pattern of vortices downstream.
The frequency of these vortices is directly proportional to the flow velocity of the fluid. Sensors in the meter detect the vortices and convert the frequency into a flow rate.
Components:
Bluff Body: An object placed in the flow stream to generate vortices.
Sensors: Typically, piezoelectric, capacitive, or ultrasonic sensors are used to detect the vortices.
Electronics: Converts the frequency of the detected vortices into a readable flow rate and may include digital displays and output signals for further processing.
Advantages:
Versatility: Can measure a wide range of fluids, including liquids, gases, and steam.
Accuracy and Repeatability: Provides good accuracy and repeatability for a variety of flow conditions.
No Moving Parts: This reduces maintenance requirements and increases reliability and longevity.
Wide Range of Sizes: Available for different pipe sizes and flow rates.