1. Definition
A turbine flow meter is a high-precision velocity-type flow measurement instrument that measures the flow rate of fluids by converting the rotational speed of a turbine rotor into electrical signals. It is widely used in industrial and commercial fields for its excellent accuracy and fast response, especially suitable for measuring clean, low-viscosity liquids and gases.
2. Working Principle
When the measured fluid flows through the meter body, it drives the turbine rotor to rotate at a speed proportional to the fluid velocity. The rotor’s rotation cuts the magnetic field generated by the built-in permanent magnet or electromagnetic coil, inducing a high-frequency electrical pulse signal in the sensor. The signal is then processed by the converter, which calculates the instantaneous flow rate and cumulative flow based on the pulse frequency (calibrated in advance according to the meter’s flow coefficient).
3. Core Features
- High Measurement Accuracy: For liquid measurement, the accuracy class can reach ±0.1%FS – ±0.5%FS; for gas measurement, it is ±1.0%FS – ±1.5%FS. It has excellent repeatability (±0.05% – ±0.1%), meeting the high-precision measurement needs of industrial processes.
- Fast Response Speed: The turbine rotor has low inertia, enabling rapid response to changes in fluid flow rate (response time < 10ms). It is ideal for dynamic flow measurement scenarios where flow rates fluctuate frequently.
- Wide Flow Range & Versatile Calibers: The flow range ratio (turndown ratio) can reach 1:10 to 1:30, covering a broad flow spectrum. Standard calibers range from DN4 to DN200, with customized large-caliber models (up to DN500) available for industrial large-flow applications.
- Compact Structure & Easy Installation: The meter body is designed with a streamlined structure, small in size and light in weight. It supports multiple installation methods such as flange, thread, and clamp-on connections, adapting to different pipeline layouts.
- Low Pressure Loss: The internal flow path is optimized to minimize fluid resistance, reducing energy consumption of the pipeline system. It is particularly suitable for energy-saving-oriented projects.
4. Suitable Fluids & Application Scenarios
- Liquids: Clean petroleum products (gasoline, diesel, kerosene), mineral oil, chemical solvents, pure water, tap water, and other low-viscosity (≤50mm²/s) and non-corrosive/weakly corrosive liquids.
- Gases: Natural gas, compressed air, nitrogen, oxygen, and other dry, clean gases (free of solid particles and condensates).
- Key Application Fields: Petroleum and petrochemical, chemical industry, water treatment, food and beverage, power generation, automotive, and aerospace. It is also widely used in commercial metering (e.g., fuel refueling stations) and industrial process control.
5. International Certifications & Material Options
- Certifications: Complies with international standards such as ISO 9001, CE, ATEX (explosion-proof), UL (North America), and PED (Pressure Equipment Directive, EU), ensuring market access in global regions.
- Material Selection: The meter body is available in 316L stainless steel, carbon steel, and Hastelloy; the turbine rotor is made of titanium alloy, PEEK, or ceramic, adapting to different fluid corrosiveness and temperature requirements.
Post time: Nov-23-2025