Vortex Flow Meter
Rugged vortex shedding flow meter for steam, gas and low-viscosity liquids at high temperatures.
- ▪±1% accuracy (liquid)
- ▪Up to 400 °C
- ▪PN40 / PN100
Product Overview
The NX-VX600 vortex flow meter is engineered for saturated and superheated steam, compressed air, industrial gases and low-viscosity liquids. With an all-welded, no-moving-parts construction and integrated temperature compensation, it delivers stable mass and energy flow measurement up to 400 °C and 250 bar — a workhorse for utility metering, boiler efficiency and process steam distribution.
Working Principle: A bluff body (shedder bar) placed in the flow stream creates alternating vortices downstream (von Kármán vortex street). The frequency of vortex shedding is linearly proportional to the flow velocity across a wide Reynolds number range. A piezoelectric sensor detects the vortices and converts the frequency into volumetric flow — with optional pressure and temperature compensation for direct mass or energy readings.
Technical Specifications
| Product Type | Vortex Flow Meter |
|---|---|
| Model Number | NX-VX600 |
| Measuring Principle | Von Kármán Vortex Shedding |
| Measuring Range | Reynolds 5,000 – 7,000,000 |
| Accuracy | ±1 % (liquid), ±1.5 % (gas / steam) |
| Repeatability | ±0.2 % |
| Operating Temperature | -40 °C to +400 °C |
| Operating Pressure | Up to PN100 / Class 600 |
| Process Connection | Flanged, Wafer, NPT |
| Output Signal | 4–20 mA / HART, pulse, Modbus RTU |
| Housing Material | SS 316 / Carbon steel |
| Wetted Parts | SS 316L, Hastelloy (opt.) |
| Pipe Size | DN15 – DN300 |
| Protection Class | IP66 / IP67 |
| Certification | CE, ATEX, IECEx, PED, ISO 9001 |
Key Features
- ✓Integrated T & P Compensation
- ✓Mass & Energy Flow Output
- ✓No Moving Parts
- ✓All-Welded Body
- ✓High Accuracy
- ✓Rugged Industrial Construction
- ✓Corrosion Resistant Materials
- ✓Long Service Life
- ✓Low Maintenance
- ✓Easy Installation & Commissioning
- ✓High Repeatability
- ✓Digital Local Display
Applications
- ▸Saturated & Superheated Steam
- ▸Boiler Efficiency Monitoring
- ▸Compressed Air Distribution
- ▸Natural Gas Metering
- ▸Industrial Gas Lines
- ▸Cryogenic & Solvent Lines
- ▸Utility Sub-metering
Model & Ordering Information
| Sizes | DN15 – DN300 |
|---|---|
| Compensation | Volumetric / Mass / Energy |
| Sensor | Standard / High-Temperature (400 °C) |