Vortex flow meters use a principle called the Karman effect to measure liquids, gases and vapors. In fluid dynamics, a Karman vortex lane is a repeating pattern of rotating (swirling) vortices caused by a process known as vortex drift (shedding). As water (or any other liquid, gas or vapor) flows through an obstacle, the fluid separates and creates an alternating differential pressure called a vortex.
The flow velocity of the fluid and the vortex generation frequency are proportional to each other. Therefore, detecting the number or pulse of vortices makes it possible to measure flow. The main method of detection involves sensing the vortex vibration with a piezo sensor.
Vortex flow meter requires a well-developed and symmetrical flow velocity profile, free from any distortions or swirls to ensure good accuracy and repeatability. It is a standard practice to install it away from any source of turbulence. Common source of turbulence includes pumps, valves, changes in line direction (i.e. bends), changes in line size etc.
- No mechanical moving parts.
- Can detect liquids, gases and vapors
- Offers excellent chemical resistance
- Has large range ability and good accuracy
- Can be mounted at any angle
- Flow path is restricted therefore pressure loss will occur
- Scale deposits and liquids that contain solids will cause clogging
- Sludge or slurry may coat the shredder bar disrupting the formation of vortices
- Not suitable for high-viscosity fluids
- Sensitive to pipe vibrations
- A section of straight pipe is required
- Wet/dry air measurement
- Small pipeline measurement – DN8 to DN25 (1/4” to 1”)
- Data display of temperature, pressure, standard flow
- Battery power supply; 24VDC
- Communication via bluetooth and APP (optional)
- User friendly operating interface
- Winner of 2023 iF Design Awards (Industry Category)
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- Easy installation and maintenance
- Self-diagnose function
- Unique dual-sensor technology
- Anti-vibration feature
- Self density calculation function (optional)
- Multi-variable version with built-in RTD and pressure sensor
- Unit selectable function
- Communication via bluetooth and APP (optional)
- Password protection
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