The product
The stress-type vortex flow meter is a velocity-based flow meter widely used in industries such as oil and gas, chemical processing, power generation, heating, and others. The equipment complies with standards JB/T9249-2015 (vortex flow sensor) and JJG1029-2016 (vortex flowmeter verification regulation).
Working principle
The operation of the vortex flow meter is based on the vortex shedding phenomenon, which occurs when a fluid passes through an obstacle (bluff body).
As the fluid flows past the obstacle, it generates alternating vortices on both sides. These vortices are detected by a sensor, which converts them into electrical signals. By analyzing the frequency of these signals, the instrument accurately calculates the flow rate.
Product features
- High accuracy: typical error below 1%, ensuring reliable measurements
- Wide application range: suitable for liquids, gases, and steam across various industries
- High robustness: constructed from stainless steel or carbon steel, resistant to harsh conditions
- Easy installation and maintenance: compact, lightweight design with accessible components
- Integrated diagnostics: facilitates fault detection
- Digital communication: compatible with protocols such as HART, Modbus, and PROFIBUS
Technical parameters
- Measured fluids:
- Steam, compressed air, industrial gases, and liquids
- Standards:
- Sensor: JB/T9249-2015
- Verification: JJG1029-2007
- Nominal diameter: DN15 to DN300 (flanged or clamp connection)
- Accuracy:
- Liquids: ±1%
- Gas/Steam: ±1.5% or ±1%
- Range ratio:
- 1:10, 1:15, 1:20
- Material:
- Stainless steel 304 or 316 (L)
Operating conditions
- Fluid temperature: -40°C to +350°C
- Ambient temperature: -20°C to +60°C
- Relative humidity: 5% to 90%
- Atmospheric pressure: 86 to 106 kPa
Outputs and communication
- Pulse signal
- 4–20 mA output
- RS485 communication (and other protocols)
Power supply
- External: 24VDC ±15%
- Internal: 3.6V lithium battery
Connections and interface
- Standard flanges: GB/T9119-2010
- Compatible with international standards: DIN, ANSI, JIS
- Electrical interface: M20×1.5 (NPT available on request)
Protection
- Protection rating: IP65 or higher
- Explosion-proof certification: Ex d II C T6 Gb
Measurement range
Available for multiple diameters (DN15 to DN1000+), covering different flow ranges for liquids and gases, with frequency output proportional to flow.
Application
Suitable for industrial processes involving:
- Steam
- Industrial gases
- Low-viscosity liquids
Widely used in sectors such as:
- Oil and gas
- Chemical industry
- Energy
- Industrial heating
