Gas Vortex Flowmeter
Reliable volumetric gas measurement solution for compressed air monitoring, natural gas metering, and industrial process gases.
Gas Vortex Flowmeter is a high-performance solution designed for the rigorous demands of gas custody transfer and fiscal billing. Equipped with real-time temperature and pressure compensation, it automatically converts actual flow into Standard Cubic Meters (Nm³). Positioned for high-accuracy applications, it eliminates the financial risks of gas compressibility, ensuring transparent and reliable energy management.
- Flow Accuracy: ±1.5% (gas/steam)
- Pipe Size: DN15 – DN300
- Maintenance-free gas measurement with zero moving parts
- 1:20 to 1:30 turndown—captures low flow to peak demand
- Zero parts replacement for 10-15 years
Request QuotationTechnical Consultation
Maintenance-Free Gas Measurement With No Moving Parts
Parameter | Specification |
|---|---|
Measurement Principle | Vortex shedding (Kármán vortex street) with piezoelectric or capacitive sensor |
Application | Compressed air, natural gas, nitrogen, CO₂, steam (saturated/superheated), argon, process gases |
Pipe Size Range | DN15 – DN300 (full-bore) | DN350 – DN1200 (insertion type) |
Flow Accuracy | ±1.0% of reading (liquid) | ±1.5% of reading (gas/steam) | ±2.5% (insertion type) |
Repeatability | ±0.2% to ±0.33% |
Rangeability | 1:10 (standard) | 1:20 to 1:30 (wide range models) |
Velocity Range | Gas: 4-40 m/s (optimal 7-25 m/s) | Liquid: 0.5-7 m/s |
Reynolds Number | ×10⁴ to 7×10⁶ (maintains Strouhal number stability) |
Operating Pressure | PN16 (1.6 MPa), PN25 (2.5 MPa), PN40 (4.0 MPa) | DN25-DN200: up to 4.0 MPa |
Pressure Drop | Cd ≤ 2.4 per JB/T9249 (typically 0.2-0.5 bar at max flow) |
Gas Temperature | -40°C to +250°C (standard) | -40°C to +320°C (extended) | +100°C to +350°C (high-temp) |
Vortex Shedding Element | Triangular column (optimal St number design), stainless steel 304/316L |
Sensor Type | Piezoelectric crystal (standard) | Capacitive (high vibration environments) |
Flow Computer | Built-in or external: T&P compensation, totalizers, diagnostics, alarm outputs |
Communication | RS485 Modbus RTU, HART protocol, Profibus DP (optional) |
Display | LCD: volumetric flow %, instantaneous flow, accumulated totals, T&P values |
Data Logging | Built-in: hourly/daily totals, up to 1 year historical data (EEPROM) |
Protection Rating | IP65 (standard) | IP68 (submersible option) |
Explosion-Proof | Ex d IIB+H2 T2-T5 (flameproof) | Ex ia IIC T2-T5 (intrinsically safe) |
Quality Certifications | CE |
Why Choose Vortex for Gas Measurement
vs. Gas Turbine Flowmeters:
- No moving parts = zero maintenance
- No filtration required (no bearing damage)
- Lower total cost of ownership
- Slightly lower accuracy (±1.5% vs. ±0.5-1%)
- Requires more straight pipe
vs. Orifice Plate Meters:
- 10x better rangeability (1:30 vs. 1:3)
- 60-75% lower pressure drop
- Higher accuracy (±1.5% vs. ±2-3%)
- Digital output (no square-root extraction)
- No impulse lines to freeze or plug
vs. Ultrasonic Gas Flowmeters:
- 70-85% lower equipment cost
- Simpler technology (easier to troubleshoot)
- No acoustic contamination from noise
- Has moving obstacle (pressure drop)
- Requires adequate straight pipe
vs. Thermal Mass Flowmeters:
- Better accuracy at high flow rates
- Works with varying gas composition
- Handles high-temperature applications better
- Requires T&P compensation for mass flow
- Affected by pipeline vibration
Best Applications for Gas Vortex Flowmeter:
- Compressed air systems (maintenance-free priority)
- Natural gas billing (proven technology, lower cost than ultrasonic)
- Steam measurement (high-temperature capability)
- Budget-conscious projects requiring ±1-1.5% accuracy
- Applications with available straight pipe runs
Vortex Technology Across Gas Measurement Applications
Maintenance-free reliability for compressed air, natural gas, steam, and industrial process gases
Natural Gas & LPG Custody Transfer
Used as the primary measurement point for gate stations and industrial park gas distribution. The integrated temperature and pressure compensation ensures that every cubic meter is accounted for accurately, even as environmental conditions change.
Industrial Compressed Air Monitoring
Deployed across large manufacturing facilities to monitor air compressor efficiency. Its wide range ratio allows it to detect high-velocity production air and small, expensive nighttime leaks, directly lowering electricity overhead.
Chemical & Petrochemical Process Gases
The definitive choice for measuring Nitrogen (N2), Argon (Ar), and Carbon Dioxide (CO2). Its 316L stainless steel construction and explosion-proof design provide the safety and corrosion resistance required for volatile chemical processing.
Metallurgy & Combustion Control
Provides precise fuel-gas and oxygen flow data for industrial furnaces and steel refining. The high-speed response of the vortex sensor allows for real-time air-to-fuel ratio adjustments, improving heat efficiency and product consistency.
Boiler & Energy Sub-Metering
Ideal for internal cost allocation in large industrial parks where multiple tenants share a central gas supply. Non-volatile EEPROM memory ensures that totalized data is preserved for 10 years, even during facility power outages.
Precision Gas Flow Measurement Starts Here
Optimize your sanitary gas applications with accurate, maintenance-free thermal mass flow measurement. Contact our engineers today to configure the right tri-clamp solution for your system.
info@hbmeter.cc
(+86) 152-3780-0315
1 Jingsan North Road, Xiangfu District, Kaifeng, Henan 475004 China
About HBmeter
AFT Instruments is a high-tech manufacturer delivering precision flow instrumentation for water, chemical, power, industrial automation, and process industries.
View moreContact Us
info@hbmeter.cc
(+86) 152-3780-0315
(+86) 152-3780-0315
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