Water Turbine Flow Meter
Industrial and Low-Conductivity Water Build
Accuracy +/- 0.5% of rate
Line sizes 1/2″ to 8″ (DN15 to DN200)
Pressure up to 25 MPa
- 304 stainless body standard
- Reads DI / RO / USP-grade water EMF cannot
- 3.6 V lithium battery option
Water turbine flow meters play a key role in industrial water service that EMF cannot reach. The LWGY reads cooling water, deionized water, RO permeate, USP-grade purified water, boiler feedwater, condensate return, and aerospace test-bench coolant loops across DN15 to DN200 lines. Temperature Application -20 to +120 °C standard; pressure up to 25 MPa for boiler feedwater service. The 304 stainless body is standard for clean industrial water; 316L upgrade for chloride-prone cooling water.
Benefits
- Reads DI / RO / USP-grade water below the EMF 5 µS/cm floor
- 304 stainless standard, 316L chloride upgrade
- Pressure up to 25 MPa for boiler feedwater
- 3.6 V lithium battery option for remote stations
- Accuracy +/- 0.5% of rate
- Line sizes 1/2″ to 8″ (DN15 to DN200)
Typical applications
Four water applications for clean, low-conductivity water EMF can’t reach.
Power-plant cooling water and chiller-loop monitoring
Condenser approach and chilled-water primary mains metered against pump curves/approach temperature. Pulse feeds DCS for heat-balance; 304 handles closed-loop treated water.
Semiconductor UPW and pharmaceutical USP utility
Semiconductor UPW and USP DI loops; EMF can’t read water below 5 µS/cm. 316L for DI chemistry; ±0.5% of rate across the range.
Boiler feedwater and condensate return
Boiler feedwater DN50–DN150 at deaerator/economiser inlet. Treated water 1–5 µS/cm below EMF floor; pressure up to 25 MPa.
Aerospace and test-bench coolant loops
Aerospace and engine test-bench coolant loops on DI water/glycol during acceptance/transient cycling. High-frequency pulse captures throttle steps; 304 handles DI/chilled-glycol.
Specifications
| Measurement principle | Velocity-type turbine with magnetic-pickup pulse output |
|---|---|
| Standard | JB/T9246-2016 turbine flow sensor |
| Line sizes | 1/2″ to 8″ (DN15 to DN200) |
| Accuracy | +/- 0.5% of rate standard (custody class) |
| Repeatability | +/- 0.1% of rate |
| Pressure | Pressure up to 25 MPa (3,625 psi); ANSI 150 / 300 / 600 / 900 / 1500 / 2500 LB |
| Conductivity floor | None; turbine reads DI / RO / USP-grade water that EMF physically cannot measure |
| Compatible media | Cooling water (0.7–0.85 cSt) · condensate · boiler feedwater (0.36 cSt @ 80 °C) · deionized water (Type II) · RO permeate · USP-grade purified water · demineralized water · chiller-loop and chilled-water-glycol blends · aerospace test-bench coolant |
| Temperature Application | −20 to +120 °C (room-temperature type, standard) · −40 to +180 °C (high-temperature type) |
| Ambient temperature | −20 to +65 °C |
| Body material | 304 stainless standard for clean industrial water service · 316L upgrade for chloride-prone cooling water and brackish-makeup service · duplex / Hastelloy C custom on application review |
| Impeller | 2Cr13 martensitic stainless standard for clean water service · 430F ferritic alternative · duplex stainless option for chloride carry-over · ceramic high-RPM option |
| Bearing | Tungsten carbide standard, ceramic high-RPM option |
| Output signals | Pulse 3-wire, 4-20 mA 2-wire / 4-wire, RS-485 Modbus RTU, HART, GPRS / IoT |
| Power supply | 24 V DC standard, 3.6 V lithium battery option (~0.3 mA standby, 5-year typical for remote pump stations) |
| Transmission distance | Pulse 3-wire ≤ 300 m, 4-20 mA ≤ 1500 m (load ≤ 500 Ω), RS-485 / HART ≤ 1200 m |
| Ingress protection | IP65 / IP66 / IP67 |
| Connection | Threaded G1/2 to G4-1/2 / flanged ANSI 150 to 2500 LB / Tri-clamp on sanitary utility versions |
| Approvals | JB/T9246-2016, EMC 2014/30/EU (Annex II), ISO 9001 calibration certificate with each meter |
Installation
Key install requirements. Full datasheet on request.
- Run pipe full at the meter; pressurised pump-discharge or condenser-return leg only
- Install upstream strainer; slow-fill at first commissioning to avoid dry-rotor shock
- Maintain ≥ 10 D upstream and ≥ 5 D downstream straight pipe
- Vertical installs flow upward only; pipe arrow aligns with line flow
- Inspect impeller every 6 months; check K-factor against calibration certificate
Frequently asked questions
Need help sizing a cooling water or boiler feedwater build?
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