SUP-LUGB Vortex flowmeter wafer installation
SAV-LUGB Vortex flowmeter work on the principle of generated vortex and relation between vortex and flow by theory of Karman and Strouhal, which specialize in measurement of steam, gas and liquid of lower viscosity.
Features
Pipe diameter: DN15-DN300
Accuracy: 1.0% 1.5%
Range Ratio: 1:8
Ingress protection: IP65
- Description
Vortex shedding flow meters are widely used in industrial process applications for measuring the flow of liquids, gases, and steam. Vortex shedding flow meters use the principle of vortex shedding to measure flow rate, which involves the frequency of vortices shed from a bluff body in the fluid stream. They can measure flow rate across a wide range of flow velocities, pressures, and temperatures. They have no moving parts, which makes them low maintenance and reduces the likelihood of clogging or damage. They are suitable for use in corrosive and abrasive fluids, and are often made of materials such as stainless steel or titanium.
SPECIFICATIONS
| Product | Vortex flowmeter wafer installation |
|---|---|
| Model | SUP-LUGB |
| Diameter nominal | DN15~DN300 |
| Installation | Wafer connection: DN15-DN300(priority PN2.5MPa) |
| Accuracy | 1.5%, 1.0% |
| Range Ratio | Gas density:1.2kg/m3, Range ratio: 8:1 |
| Medium Temperature | -20°C ~ +150°C、-20°C ~ +260°C、-20°C ~ +300°C |
| Output signal | 4-20mA |
| Frequency | RS485 communication (Modbus RTU) |
| Power supply | 24VDC±5% Li battery (3.6 VDC) |
| Ingress protection | IP65 |
| Body Materials | Stainless shell |
| Display | 128*64 dot matrix LCD |
- Measuring principle
A fluid flowing with a certain velocity and passing a fixed obstruction generates vortices. The generation of vortices is known as Karman’s Vortices.The frequency of vortex shedding is a direct linear function of fluid velocity and frequency depends upon the shape and face width of the bluff body.
Since the width of the obstruction and inner diameter of the pipe will be more or less constant, the frequency is given by the expression:
f=StV/d
In the formula:
f – Karman vortex frequency generated at one side of bluff body (Hz)
St – strouhal number (non-dimensional number)
V – average speed of fluid (m/s)
d – width of bluff body (m)