Vortex technology, how does it work?
The LIQUI-VIEW Base series operate on the vortex principle.
A Kármán vortex street is a term for a repeating pattern of swirling vortices caused by the unsteady separation of flow of a fluid over bluff bodies.
It is named after the engineer and fluid dynamicist, Theodore von Kármán.
In a Vortex flow meter, an obstruction in the flow path, often referred to as a shedder bar, serves as the bluff body. The shedder bar causes process fluid to separate and form areas of alternating differential pressure known as vortices around the back side of the shedder bar.
The obstruction (bluff body) placed in the flow of the liquid sheds vortices downstream at a frequency proportional to the velocity of the liquid.
A piezoelectric sensor detects the vortices and creates electrical pulses which are proportional to the liquid flow rate.
LIQUI-VIEW Base provides the output either with frequency output or analog output (4-20 mA).
Our LIQUI-VIEW products has an shedder bar and a Vortex detector.
See below the vertical profile of the LVB-25-AD and LVB-06
We have have different Vortex flow meter with an flow range of 0.5 l/min up to 150 l/min.
- Frequency output
- Analog output 4..20mA
- Analog output 4..20mA with display with actual flow