Product Advantages
The core value of thermal mass flow meters lies in the simplicity, precision, and efficiency derived from their direct measurement of gas mass flow.
1. Direct Mass Flow Measurement: Eliminates the need for additional temperature and pressure transmitters and calculation units. Directly outputs mass flow in standard conditions (Nm³/h, kg/h), simplifying system structure, reducing overall costs, and eliminating intermediate calculation errors.
2. Ultra-Low Pressure Drop: Featuring insertable or flow-through designs with no internal obstructions, pressure loss is negligible. This significantly reduces pipeline operational energy consumption, delivering substantial energy savings.
3. Wide Turndown Ratio with Exceptional Low-Flow Performance: Features an extremely wide turndown ratio up to 1000:1, enabling precise measurement from minute leaks to full-pipe flow. Its exceptionally low start-up flow rate is unmatched by most flow meters.
4. High Accuracy and Repeatability: Achieves accuracy of ±(1% to +1.5%) FS and repeatability of ±0.5% FS, providing reliable and credible data for energy accounting and cost control.
5. Simple Installation and Maintenance: Insertion models allow installation and maintenance without production interruption (equipped with ball valves), significantly reducing installation costs and production downtime losses. Sensors support hot-swapping for convenient maintenance.
6. Digital and Intelligent: Standard LCD display with button operation supports communication protocols including RS485 (Modbus) and HART, enabling remote monitoring, data acquisition, and diagnostics for seamless integration into Energy Management Systems (EMS).
Core Application Areas
✅ Boiler/Kiln Energy Efficiency Management: Precise measurement and ratio control of gaseous fuels such as combustion air, pipeline gas, and natural gas to optimize combustion and reduce energy consumption.
✅ Compressed Air System Monitoring: Production volume, leakage monitoring, and cost allocation (by workgroup/equipment) for factory compressed air (CFA), offering significant energy-saving potential.
✅ Environmental Emissions & Monitoring: Monitoring flue gas emissions (CEMS), biogas, flare gas, and aeration rates in aeration tanks.
✅ Natural Gas & City Gas: Small-to-medium flow natural gas metering, pressure regulator station monitoring, and process control.
✅ Semiconductor & Precision Manufacturing: Precise control and monitoring of high-purity process gases (e.g., Ar, N₂, He) and specialty gases.
Technical Specifications
1. Measurement Principle: Thermal Diffusion Principle (Constant Power Method or Constant Temperature Difference Method)
2. Measured Media: Various gases (air, natural gas, nitrogen, oxygen, argon, flue gas, biogas, etc.)
3. Accuracy: ±1.0% to ±1.5% of Reading (typical), ±2.5% of Reading (for complex gases like flue gas)
4. Turndown Ratio: Up to 1000:1
5. Output Signal: 4-20mA, Relay Alarm Output, RS485 (Modbus RTU)
6. Power Supply: 24V DC (Standard) / 220V AC
7. Process Connection:
Insertion: 1″ NPT / M20*1.5 / Flange (for medium to large pipe diameters)
In-line: Flange / Threaded (for small pipe diameters)
8. Probe Material: 316 Stainless Steel, Hastelloy C-276 (corrosion resistant)
9. Protection Rating: IP65 (standard)
