Product Advantages
The core value of the gas Roots flowmeter lies in its ultimate precision, rugged durability, and exceptionally long service life—all engineered for trade fairness.
1. Trade-grade ultra-high accuracy: Achieves accuracy grades as high as ±1.0%, maintaining exceptional measurement precision across an extremely wide flow range (wide turndown ratio). This minimizes trade disputes and ensures fairness for both buyers and sellers.
2. Ultra-Low Start-Up Flow & Wide Turndown Ratio: Exceptionally sensitive to minute flows with minimal start-up requirements. Achieves a turndown ratio up to 1:100 or higher, precisely measuring fluctuations from minimal to maximum flow rates. Effectively prevents “unaccounted-for gas” losses from leaks, spills, or drips.
3. Exceptional repeatability and long-term stability: Repeatability error better than ±0.2%. Robust mechanical construction ensures high long-term operational stability with extended calibration intervals (typically 6-8 years), resulting in lower total cost of ownership (TCO) over the product lifecycle.
4. Direct-reading volumetric measurement with high reliability: Based on mechanical volumetric principles, measurement results remain unaffected by gas composition or density variations (requires temperature/pressure compensation for standard conditions). Outputs pulse signals with strong electromagnetic interference resistance, ensuring reliable data.
5. Integrated intelligent temperature/pressure compensation: Built-in high-precision temperature and pressure sensors directly output volumetric flow at standard conditions (20°C, 101.325 kPa). High integration eliminates external transmitters and reduces installation costs.
6. Rugged and durable with simple maintenance: Constructed with high-strength aluminum alloy or cast iron housing and precision bearing system, designed for over 20 years of service life. Washable filter screens and replaceable lubricating oil enable extended maintenance intervals and straightforward operation.
Core Application Areas
✅ Urban Gas Trade Settlement: Trade metering for gas gate stations, transmission and distribution networks, large industrial users, and commercial users (compliant with the highest standards including GB/T 18603 and EN12261).
✅ Natural Gas Development and Utilization: Wellhead natural gas metering, CNG/LNG refueling stations, and furnace gas metering for gas-fired power plants.
✅ Industrial Gas Measurement: Cost accounting and energy management for high-pressure gases including compressed air (CFA), nitrogen (N₂), and coal gas.
✅ Pressure Regulation and Metering Stations: Core metering instruments for regional pipeline networks, enabling flow allocation and settlement.
✅ Testing and Calibration: Serving as reference standards for online live-flow calibration of other gas flowmeter types.
Technical Specifications
1>Instrument caliber: DN25-DN250
2>nominal pressure: 1.6MPa, 2.5MPa, etcPrecision level: 1.5, 1.0
3>Installation method: flange pipeline type, threaded type
4>Power supply method: 24VDC power supply, battery powersupply
5>Communication Method: RS485[Output Method]: Pulse output, 4-20mA current output
