Liquid Turbine Flow Meter
Product Description
✓ IP65 (Higher Available) · ✓ CE Compliant
Pipe Size: DN4 – DN200 (Thread / Flange / Clamp / Wafer)
Accuracy: ±1%R · ±0.5%R · ±0.2%R (customized)
Repeatability: 0.05% – 0.2%
Medium Temp: -20°C to +120°C
Ambient Temp: -20°C to +60°C
Sensor Material: 304 / 316 stainless steel
Power Supply: 24VDC ±15% (external) · 3.6V/10AH lithium (internal)
Output: Pulse | 4–20 mA | RS485 | HART
Lead Time: 7–14 working days · MOQ: 1 Unit
Engineer replies within 24 hours · Free technical consultation
Technical Specifications
Performance & Conditions of Use
| Parameter | Specification |
|---|---|
| Measurement Principle | Turbine — impeller rotation frequency proportional to flow velocity |
| Executive Standard | Turbine Flow Sensor (JB/T 9246-1999) |
| Measuring Medium | Clean liquids — no corrosion effect with 1Cr18Ni8Ti, 2Cr13 stainless steel and corundum Al₃O₃ cemented carbide. No fibers, particles or impurities. Kinematic viscosity at working temperature ≤ 5×10⁻⁶ m²/s (higher viscosity: real-liquid calibration required) |
| Accuracy Class | ±1%R · ±0.5%R · ±0.2%R (customized) |
| Repeatability | 0.05% – 0.2% (short-term) |
| Sensor Material | 304 stainless steel · 316 stainless steel |
| Connection Method | Thread · Flange · Clamp · Wafer |
| Medium Temperature | -20°C to +120°C |
| Ambient Temperature | -20°C to +60°C |
| Relative Humidity | 5% – 90% |
| Atmospheric Pressure | 86 kPa – 106 kPa |
Electrical & Signal
| Parameter | Specification |
|---|---|
| Communication Output | Pulse signal · 4–20 mA signal |
| Working Protocol | RS485 communication · HART protocol |
| Power Supply (External) | 24VDC ±15%, ripple ≤ ±5% — suitable for 4–20 mA output, pulse output, RS485 |
| Power Supply (Internal) | 1 set of 3.6V / 10AH lithium battery — operates normally at battery voltage 2.0–3.0V |
| Interface | Basic type: Hausman connector or built-in three-core cable; Explosion-proof type: Internal thread M20×1.5 |
| Explosion-proof Grade | Ex d ⅡC T6 Gb |
| Protection Class | IP65 (higher can be customized) |
Why Choose a Liquid Turbine Flow Meter?
A liquid turbine flow meter is a new generation of turbine flow meter engineered for high-precision clean liquid measurement. Its simple structure, light weight, sensitive response, and easy installation make it a preferred choice for chemical, petroleum, water, and food processing industries where reliable flow totalization and batch control are required.
Unlike electromagnetic flow meters — which require a minimum fluid conductivity — turbine meters work on any clean liquid regardless of electrical properties, including petroleum products, solvents, and non-conductive chemicals. The direct pulse frequency output carries no zero drift and integrates cleanly with PLCs, totalizers, and batch controllers.
- High accuracy — generally ±1%R and ±0.5%R; high-precision type up to ±0.2%R with real-liquid calibration
- Excellent repeatability — short-term repeatability 0.05%–0.2%, the preferred flow meter for trade settlement
- Pulse frequency output with zero drift — strong anti-interference ability; suitable for totalizing measurement and direct computer connection
- Strong signal resolution and wide range — compact and lightweight structure, easy installation and maintenance, large fluid capacity
- Quantitative control capability — when matched with a special-function display instrument, enables quantitative dispensing control with excess alarm output; an ideal instrument for energy saving and batch management
- Compatible with key stainless steel grades — no corrosion effect with 1Cr18Ni8Ti, 2Cr13 stainless steel and corundum Al₃O₃ cemented carbide in closed pipelines
- Explosion-proof for hazardous areas — Ex d ⅡC T6 Gb certification covers Zone 1 and Zone 2 installations in chemical and petroleum facilities
For trade settlement and custody transfer applications, the liquid turbine flow meter’s ±0.5%R accuracy and 0.05%–0.2% short-term repeatability make it one of the most cost-effective choices at this precision level. When paired with a batch controller, it also enables accurate quantitative dispensing with alarm output for over-flow protection.
Typical Applications
🔧 Petroleum & Light Hydrocarbons — Trade Settlement
The Challenge: Fuel oil, diesel, lubricating oil, and light hydrocarbon streams are non-conductive — ruling out electromagnetic flow meters. Trade settlement and custody transfer demand the accuracy and repeatability that thermal or differential pressure meters cannot match for clean liquids.
Why This Meter: The liquid turbine flow meter delivers ±0.5%R accuracy with 0.05%–0.2% short-term repeatability via a direct pulse output — no zero drift, strong anti-interference. Ex d ⅡC T6 Gb explosion-proof rating covers Zone 1 hazardous areas in refineries and petrochemical plants. DN4–DN200 covers loading arm headers and branch feed lines. 304/316 stainless steel sensor material handles mild hydrocarbon exposure without corrosion.
🔧 Chemical Processing — Solvent & Batch Dispensing
The Challenge: Non-conductive solvents (toluene, xylene, methanol, acetone) cannot be measured by electromagnetic meters. Batch production lines require precise volumetric dispensing with alarm protection against overfill.
Why This Meter: Compatible with 1Cr18Ni8Ti, 2Cr13 stainless steel and Al₃O₃ cemented carbide wetted parts, the turbine meter handles a wide range of industrial solvents within the kinematic viscosity limit (≤5×10⁻⁶ m²/s). When matched with a special-function display controller, it enables quantitative dispensing with excess alarm output — ideal for batch and filling line control. RS485 and HART outputs integrate directly with DCS and SCADA systems.
🔧 Industrial Water & Cooling Circuits
The Challenge: Clean water circuits in HVAC systems, industrial cooling loops, and process water distribution need reliable, low-maintenance meters that integrate with energy monitoring and building management systems.
Why This Meter: For clean water applications where conductivity is not a concern, turbine meters offer high accuracy and excellent repeatability at competitive cost. The internal 3.6V/10AH lithium battery option supports remote installations without power infrastructure — battery operates down to 2.0V, providing years of uninterrupted service. 4–20 mA and RS485/HART outputs support direct integration with BMS and SCADA platforms.
🔧 Food & Beverage — Sanitary Tri-clamp Connections
The Challenge: Liquid measurement in food, dairy, and beverage production requires sanitary-grade connections, compatible stainless steel wetted surfaces, and accurate batch totalization for recipe and filling control.
Why This Meter: The tri-clamp connection option uses 316 stainless steel wetted parts. The meter measures water, juice, edible oil, and similar clean liquids within its kinematic viscosity limit. Pulse and 4–20 mA outputs work directly with batching and filling line controllers. When paired with a display instrument with quantitative control function, it provides excess alarm output for overfill protection.
How a Liquid Turbine Flow Meter Works
The operating principle is mechanical and direct. Fluid entering the pipe strikes the blades of a multi-blade impeller (turbine rotor) suspended in the flow path on precision bearings. The rotor spins at a speed directly proportional to the average fluid velocity through the pipe cross-section.
f = K × Q — where f = pulse output frequency (Hz), K = meter factor (pulses per litre, determined by calibration), Q = volumetric flow rate
A magnetic pickup sensor mounted externally on the pipe body detects each blade pass as an electrical pulse — no electrical contact with the fluid is required. The transmitter counts pulses for instantaneous flow rate and cumulates totals. Because the K-factor is determined by geometry and fixed at calibration, the output carries no zero drift — even at low flow rates within the turndown range, counts are reliable and do not accumulate error over time.
Why Repeatability Is the Key Metric for Trade Settlement
- In custody transfer, short-term repeatability (0.05%–0.2%) determines whether the same physical quantity produces the same reading across repeated measurements — this is the parameter financial reconciliation depends on
- Accuracy (±0.5%R standard) can be further improved through real-liquid calibration against the actual process fluid — essential for high-viscosity applications or ±0.2%R custody transfer requirements
- The pulse frequency signal has strong anti-interference ability and is suitable for direct connection to computers, totalizers, and batch controllers without signal conditioning
Can We Meet Your Requirements?
| Requirement | Capability | Status |
|---|---|---|
| Clean liquid (water, petroleum, solvents) | Standard — no minimum conductivity required | ✅ Standard |
| Pipe DN4–DN200 | Thread, flange, clamp, wafer connections | ✅ Standard |
| Accuracy ±1%R | Standard accuracy class | ✅ Standard |
| Accuracy ±0.5%R (trade settlement) | High-precision version available | ✅ Available |
| Accuracy ±0.2%R (custody transfer) | Optional with real-liquid calibration | ✅ Available |
| Medium temp -20°C to +120°C | Standard operating range | ✅ Standard |
| Explosion-proof (Ex d ⅡC T6 Gb) | Zone 1 / Zone 2 hazardous areas | ✅ Standard |
| Pulse / 4–20 mA / RS485 / HART output | All available — specify at order | ✅ Standard |
| Battery-powered (3.6V/10AH lithium) | Internal power, operates at 2.0–3.0V battery voltage | ✅ Available |
| Quantitative control + excess alarm | Requires matching special-function display instrument | ✅ Available |
| IP65+ protection | IP65 standard; higher ratings customizable | ✅ Available |
| Higher viscosity liquids (>5×10⁻⁶ m²/s) | Possible with real-liquid calibration — confirm first | ⚠️ Requires review |
| Slurries / liquids with solids or fibers | Not suitable — impeller fouling risk | ❌ Not recommended |
| Gas or steam measurement | Use our vortex flow meter series | ❌ Not this model |
| Non-full-pipe / open-channel flow | Requires fully flooded pipe | ❌ Not suitable |
Our Capabilities & Boundaries
WHAT WE DO:
- High-accuracy liquid flow measurement for clean liquids — ±0.5%R standard, ±0.2%R with real-liquid calibration
- Non-conductive liquid measurement — petroleum, solvents, chemicals where electromagnetic meters cannot be used
- Trade settlement and custody transfer metering with zero-drift pulse output
- Quantitative batch dispensing control with excess alarm when paired with special-function display instrument
- Explosion-proof installations (Ex d ⅡC T6 Gb) in chemical, petroleum, and hazardous area facilities
- Integration with SCADA, DCS, batch controllers via pulse, 4–20 mA, RS485, or HART
WHAT WE DON’T DO:
- Slurries or liquids with suspended solids / fibers → Use our electromagnetic flow meter
- Gas or steam flow → Use our vortex flow meter
- Very high-viscosity liquids without calibration → Contact us to confirm suitability
- Non-full-pipe or open-channel applications → Requires a different technology
Ordering Information
| Item | Details |
|---|---|
| Standard Package | Turbine flow meter body + transmitter + connection hardware |
| Structure Type | Pulse Type · Tri-clamp Type · Thread Type |
| Connection Method | Thread · Flange · Clamp · Wafer — specify at order |
| Sensor Material | 304 SS (standard) · 316 SS (corrosive / food-grade) — specify at order |
| Accuracy Option | ±1%R / ±0.5%R / ±0.2%R — specify at order |
| Output Option | Pulse · 4–20 mA · RS485 · HART — specify at order |
| Explosion-proof | Ex d ⅡC T6 Gb — available option |
| MOQ | 1 unit |
| Standard Lead Time | 7–14 working days |
| Rush Order | Available — contact sales for expedited delivery |
| Payment Terms | T/T |
| Warranty | 12 months from shipment date |
| Packaging | Export carton — ISPM 15 compliant wooden crate available on request |
Frequently Asked Questions
What is a liquid turbine flow meter used for?
A liquid turbine flow meter measures the volumetric flow rate of clean liquids in closed pipelines. Common applications include petroleum and light hydrocarbon metering, chemical solvent measurement, industrial cooling water, clean water supply, food and beverage processing, and trade settlement or custody transfer applications. It is not suitable for slurries, liquids with suspended fibers or particles, gas, or steam.
How does a liquid turbine flow meter work?
A liquid turbine flow meter works by placing a multi-blade impeller in the flow path. Fluid passing through spins the impeller at a speed proportional to flow velocity. A magnetic pickup sensor mounted outside the pipe detects each blade pass as an electrical pulse. The transmitter converts the pulse frequency to volumetric flow rate and cumulative total. The meter factor (K-factor) is fixed by calibration and produces zero drift — making the output highly stable and suitable for trade settlement.
What accuracy does a turbine flow meter achieve?
Soaring liquid turbine flow meters offer three accuracy levels: ±1%R (standard), ±0.5%R (high precision, preferred for trade settlement), and ±0.2%R (optional, requires real-liquid calibration for custody transfer). Short-term repeatability is 0.05%–0.2% across all classes — this is the critical parameter for batch dispensing and financial reconciliation.
What is the difference between a turbine flow meter and an electromagnetic flow meter?
The key difference is applicable media. Electromagnetic flow meters require electrically conductive fluid (minimum ~5 μS/cm) and cannot measure petroleum, non-conductive solvents, gas, or steam. Turbine flow meters work on any clean liquid regardless of conductivity — including petroleum products and non-conductive chemicals. However, turbine meters require liquid free of fibers, particles, and solids, where electromagnetic meters are more tolerant. For clean water, both technologies apply; turbine meters offer superior accuracy and repeatability at comparable cost.
Can a turbine flow meter handle viscous liquids?
Standard liquid turbine flow meters are rated for kinematic viscosity ≤ 5×10⁻⁶ m²/s at working temperature, covering most light petroleum products, water, and thin solvents. For liquids with kinematic viscosity greater than 5×10⁻⁶ m²/s — such as heavy oils or glycol solutions — real-liquid calibration against the actual process fluid is required to maintain rated accuracy. Contact our engineers with your fluid properties for a suitability assessment.
Is the turbine flow meter suitable for explosion-proof installations?
Yes. Soaring liquid turbine flow meters are available with Ex d ⅡC T6 Gb explosion-proof certification, suitable for Zone 1 and Zone 2 hazardous area installations. The explosion-proof version uses an internal thread M20×1.5 signal interface. This covers petroleum, chemical, and solvent measurement applications in classified hazardous locations.
Can a turbine flow meter be used for quantitative batch control?
Yes. When the liquid turbine flow meter is paired with a special-function display instrument, it can perform quantitative dispensing control with an excess alarm output. This makes it an ideal instrument for batch filling lines, chemical dosing systems, and any application requiring accurate volumetric target dispensing with overfill protection. The pulse output integrates directly with batch controllers and PLCs.
How do I select the right liquid turbine flow meter?
To select the correct liquid turbine flow meter, provide: (1) fluid type and kinematic viscosity at operating temperature; (2) pipe diameter (DN); (3) flow rate range — minimum and maximum; (4) medium temperature and line pressure; (5) required accuracy class — ±1%R, ±0.5%R, or ±0.2%R; (6) output signal — pulse, 4–20 mA, RS485, or HART; (7) whether explosion-proof certification (Ex d ⅡC T6 Gb) is required; (8) whether battery power or quantitative control function is needed. Share these parameters with our engineers and we will confirm selection and provide a quote within 24 hours.
Get Your Custom Quote in 24 Hours
We supply liquid turbine flow meters to process engineers, plant operators, and instrumentation distributors across 65+ countries. Whether you need a DN15 thread-type unit for a solvent dosing line, a DN100 flange-type meter for petroleum custody transfer, or a tri-clamp unit for a food processing line, our engineering team will review your application and respond within 24 hours.
- Engineer reviews your application parameters and replies within 24 hours
- Free 30-minute technical consultation — no obligation
- Detailed proposal with specifications and pricing within 3 business days
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