Chongqing Chuanyi PFC Series Swirl Flow Meter

Working Principle

The sensor features a venturi-like profile equipped with a set of spiral guide vanes. As fluid enters, the vanes induce a strong swirl flow. Upon entering the diffusion section, the swirl creates a secondary rotation, forming a gyroscope-like vortex precession phenomenon. This precession frequency is directly proportional to the flow rate, unaffected by fluid physical properties or density variations, ensuring exceptional linearity and accuracy.

Key Features & Advantages

• All-in-One Design: Integrates flow velocity, pressure, and temperature sensors with automatic compensation algorithms.

• High Precision & Reliability: Offers standard accuracy classes (Class 1.0, Class 1.5) with strong resistance to environmental disturbances.

• Flexible Output & Communication: Equipped with 4-20mA current output, pulse output, RS485 (Modbus), and optional HART protocol support.

• Dual Power Options: Supports external 24V DC power supply or internal long-lasting lithium battery power.

• Durable Build: High-grade wetted materials (Stainless steel 304/316/316L or cast aluminum) ensuring long service life.

Applications

• Natural Gas & City Gas: Municipal gas distribution and natural gas pipeline monitoring.

• Chemical & Petrochemical: Measurement of nitrogen, carbon dioxide, compressed air, and various chemical process gases.

• Metallurgy & Steel: Blast furnace gas, converter gas, and utility steam measurement.

• Power & Environmental Protection: Industrial exhaust monitoring, steam tracking, and light industry utility management.

 Technical Specifications

• Nominal Diameter:

  • Pipeline Type (Standard): DN15 – DN200

  • Pipeline Type (Improved): DN20 – DN400

• Accuracy Class: Class 1.0, Class 1.5

• Applicable Media: Gas, Liquid, Steam (depending on model type)

• Nominal Pressure: 1.6MPa, 2.5MPa, 4.0MPa (higher pressures available upon request)

• Wetted Parts Material: Stainless Steel (304/316/316L), Cast Aluminum

• Medium Temperature:

  • Standard: -20°C ~ +80°C (Improved) / -40°C ~ +150°C (Standard)

  • Medium/High Temp options up to +350°C

• Protection Class: IP65, IP67

• Power Supply: 24V DC or Internal Battery Powered

• Communication Protocols: Modbus (RS485), Optional HART Protocol

FAQ

• Q: Can this flow meter measure both gas and steam?

  A: Yes, standard models support gas, liquid, and steam measurement, while improved models are optimized specifically for high-performance gas or liquid applications.

• Q: What communication protocols are supported for remote monitoring?

  A: It supports RS485 (Modbus) communication as standard, with optional HART protocol available depending on your configuration requirements.

• Q: How is the device powered in remote locations without external power?

  A: The flow meter can be configured with an internal 3.6V lithium battery, making it ideal for isolated field installations.