Insertion Turbine Flowmeter
Cost-effective flow measurement for large pipes—accurate monitoring without the expense of full-bore meters
Insertion-style turbine sensors install through ball valves or flanged fittings to measure flow in large-diameter pipes from 4" to 120" with ±1% to ±2% accuracy. Eliminate the prohibitive cost of full-bore meters while maintaining reliable measurement for water distribution, industrial cooling, and process applications requiring cost-effective monitoring solutions.
- Pipe Size: DN100 – DN3000 (4" – 120")
- Accuracy: ±1% to ±2% of reading
- Velocity Range: 0.3 – 10 m/s
- Installation: Hot-tap capable (no shutdown)
- Temperature: -20°C to +120°C
- Outputs: Pulse, 4-20mA, digital communication
- Pressure: Up to 4.0 MPa
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Large-Pipe Metering Without the Large Investment
Parameter | Specification |
|---|---|
Measurement Principle | Turbine rotor at insertion point, velocity to flow calculation |
Application | Large pipe flow monitoring, cooling water, HVAC, process industries |
Installation Type | Hot-tap ball valve (1" or 2" NPT/BSP) or welded boss |
Pipe Size Range | DN100 – DN3000 (4" – 120") |
Accuracy | ±1% of reading (standard) | ±2% of reading (economy models) |
Repeatability | ±0.3% of reading |
Velocity Range | 0.3 – 10 m/s (0.5 – 5 m/s optimal) |
Turndown Ratio | 1:10 typical |
Fluid Temperature | -20°C to +120°C (sensor dependent) |
Operating Pressure | Up to 4.0 MPa (hot-tap limited to 1.6 MPa typically) |
Sensor Material | 316 SS body, hardened steel rotor, tungsten carbide bearings |
Mounting | Ball valve (DN25/DN50), welded coupling, compression fitting |
Hot-Tap Capability | Available on DN100-DN1000 (consult for larger sizes) |
Output Signal | Pulse (magnetic pickup), 4-20mA, frequency, Modbus RTU |
Fluid Types | Water, glycol, oils, process liquids (clean or slightly dirty) |
Display | LCD (optional): flow rate, velocity, totals |
Protection Rating | Sensor: IP65/IP67 | Electronics: IP65 |
Quality Certifications | CE |
Why Choose Insertion Over Full-Bore or Other Technologies
vs. Full-Bore Turbine FLowmeters:
- lower equipment cost and installation cost
- Hot-tap installation option
- Field serviceable without drainage
- Lower accuracy (±1-2% vs ±0.5%)
- Not suitable for custody transfer
vs. Ultrasonic Clamp-On Flowmeter:
- Better accuracy in turbulent flow
- Not affected by pipe deposits or liners
- Lower cost for permanent installation
- Requires pipe penetration
- Not suitable for very dirty water
vvs. Electromagnetic Insertion Flowmeters:
- Measures non-conductive fluids (oils, treated water)
- Lower cost
- Simpler technology
- Requires fluid be reasonably clean
- Moving parts need maintenance
Best Applications:
- Large diameter pipes (DN300+) where full-bore cost prohibitive
- Cooling water, HVAC, process monitoring (not billing)
- Multiple measurement points needed across facility
- Hot-tap installation required or preferred
Cost-Effective Monitoring for Large-Diameter Systems
Municipal Water & Wastewater Management
- Large distribution main monitoring
- Water treatment plant process flow measurement
- Wastewater treatment influent and effluent tracking
- District metered area boundary monitoring
- Backwash water measurement for filtration systems
- Clear well and storage tank fill/drain monitoring
Petrochemical & Chemical Processing
- Cooling water circulation systems
- Process water supply and return loops
- Boiler feed water and condensate return
- Wash water and cleaning circuit monitoring
- Thermal fluid circulation tracking
- Inter-plant water transfer metering
Industrial Cooling & HVAC Loops
- Hot water heating loop monitoring
- Cooling tower makeup and blowdown measurement
- Data center cooling infrastructure
- Manufacturing process cooling systems
- District heating and cooling networks
- Condenser water circulation (chillers to cooling towers)
Irrigation & Agricultural Water
- Main canal flow measurement
- Large irrigation laterals
- Water district allocation monitoring
- Pump station discharge
- Water rights verification
- Agricultural water delivery
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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