- Measuring principle volume flow
- Viscosity range 1 ... 10 mm²/s (cSt)
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C
- Storage temperature -20 ... +85 °C
- Output signal frequency (rectangle) / 4 ... 20 mA
- Supply voltage Ub 12 ... 24 VDC
- Error limit* ± 2.5 %
- Electrical measuring connector 5 pole device connector, M16 x 0,75
- Protection type (EN 60529 / IEC 529) IP 40
- Tightening torque 10 Nm (± 2 Nm)
- Calibration viscosity 1 mm²/s (cSt)
- Material turbine casing Edelstahl X12CrNiS18 8 (passiviert)
- Material turbine wheel 1.4122 (for measuring range 1.0 ... 10 l/min) 1.0718 (for all other measuring ranges)
- Material sealings FKM
- Material sensor casing 1.4301
- Suitable measuring cable MK 01
 Datasheet |
- Automatic sensor detection ISDS
- Low flow resistance
- Output signal: frequency, analog 4…20mA, CAN
 Datasheet |
| Catalog Excerpt |
- Low flow resistance
- Automatic sensor detection ISDS
- Output signal: frequency, analog 4…20mA, CAN
| Datasheet |
| Catalog Excerpt |
High precision turbine flow meter
- Automatic sensor detection ISDS
- Output signal: frequency, analog 4…20mA, CAN
- Aluminium and stainless steel design
| Datasheet |
| Catalog Excerpt |
The precise measuring turbine QT 600 with internal thread connection according to DIN ISO 228, in combination with the measuring devices of the MultiSystem family enables a correct volume flow measurement with different hydraulic media and varying temperatures.
- Response time <0.05 s
- Low flow resistance
- Calibration for a viscosity range from 5…100 cSt
| Datasheet |
| Catalog Excerpt |
- Measuring principle volume flow
- Viscosity range 1 ... 100 mm²/s (cSt)
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C (short-term up to +100 °C)
- Storage temperature -20 ... +85 °C
- Output signal frequency (rectangular signal) / 4 ... 20 mA
- Supply voltage Ub 12 ... 24 VDC
- Error limit ± 2.5 % of current value
- Electrical measuring connector 5 pole device connector, M16 x 0.75
- Protection type (EN 60529 / IEC 529) IP 40
- Tightening torque (sensor) 10 Nm (± 2 Nm)
- Calibration viscosity 30 mm²/s (cSt)
- Material turbine casing Aluminium (AlZnMgCu 1,5)
- Material turbine wheel 1.0718
- Material sealings FKM
- Material sensor casing 3.1645 (QL 100) / 1.4301 (QL 110)
- Suitable measuring cable MK 01
| Datasheet |
- Measuring principle volume flow
- Viscosity range 1 ... 100 mm²/s (cSt)
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C (short-term up to +100 °C)
- Storage temperature -20 ... +85 °C
- Output signal frequency (rectangular signal)
- Supply voltage Ub 6.5 ... 30 VDC
- Error limit ± 2.5 % of current value
- Electrical measuring connector 5 pole device connector, M16 x 0.75
- Mechanical measuring connector ISO228-G1¼
- Protection type (EN 60529 / IEC 529) IP 40
- Tightening torque (sensor) 10 Nm (± 2 Nm)
- Calibration viscosity 30 mm²/s (cSt)
- Material turbine casing Aluminium (3.4365)
- Material turbine wheel 1.0718
- Material sealings FKM
- Material sensor casing 3.1645
- Suitable measuring cable MK 01
| Datasheet |
- Fluid Fuels, hydraulic fluids, transmission fluids, brake fluid, Skydrol*
- Flow range 12 … 600 L/min*
- Control Electric
- Output signal CANopen
- Response time < 0.05 s
- Viscosity range 1 … 150 mm²/s (cSt)*
- Fluid temperature -20 °C … 100 °C*
- Ambient temperature -20 … 85 °C
- Turbine housing material Aluminum
- Seal material FKM*
- IP degree of protection IP54 (DIN EN 60529)
| Datasheet |
| User Manual |
- Application medium water, oil in water emulsion, water / glycol mixtures, such as water-containing liquids such as HFA / HFC *
- Flow range 1… 600 L / min *
- Output signal frequency, CANopen, 4… 20 mA
- response time; 0.05 s
- Viscosity range 1… 10 mm² / s (cSt) * calibration viscosity at 2.5 mm² / s *
- measuring accuracy up to ± 0.5% of the value M.
- Medium temperature -20… 100 ° C *
- Ambient temperature -20… 85 ° C
- Material turbine housing stainless steel
- Material seals FKM *
- IP protection class IP 67 (DIN EN 60529)
| Datasheet |
- Measuring principle volume flow
- Viscosity range see order data
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C
- Storage temperature -20 ... +85 °C
- Output signal frequency (rectangle) / 4 ... 20 mA
- Supply voltage Ub 12 ... 24 VDC
- Electrical measuring connector 5 pole device connector, M16 x 0.75
- Protection type (EN 60529 / IEC 529) IP 40
- Tightening torque 10 Nm (± 2 Nm)
- Calibration viscosity 30 mm²/s (cSt)
- Material turbine casing Aluminium AlZnMgCu 1,5
- Material turbine wheel 1.4122 (for measuring range 1.0 ... 10 l/min) 1.0718 (for all other measuring ranges)
- Material sealings FKM
- Material sensor casing 1.4301
- Suitable measuring cable MK 01
| Datasheet |
- Measuring principle volume flow
- Viscosity range see order data
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C
- Storage temperature -20 ... +85 °C
- Output signal 4 ... 20 mA
- Supply voltage Ub 12 ... 24 VDC
- Electrical measuring connector device connector 3 pole AMP, acc. to DIN 72585
- Protection type (EN 60529 / IEC 529) IP 69
- Tightening torque 10 Nm (± 2 Nm)
- Calibration viscosity 30 mm²/s (cSt)
- Material turbine casing Aluminium AlZnMgCu 1,5
- Material turbine wheel 1.4122 (for measuring range 1.0 ... 10 l/min) 1.0718 (for all other measuring ranges)
- Material sealings FKM
- Material sensor casing 1.4571
- Suitable measuring cable customer-specific
| Datasheet |
- Measuring principle volume flow
- Viscosity range 1 ... 10 mm²/s (cSt)
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C
- Storage temperature -20 ... +85 °C
- Output signal CANopen
- Supply voltage Ub 8.5 ... 30 VDC
- Electrical measuring connector 5 pole device connector, M12 x 1
- Protection type (EN 60529 / IEC 529) IP 67 (screwed)
- Tightening torque 10 Nm (± 2 Nm)
- Calibration viscosity 30 mm²/s (cSt)
- Material turbine casing high-grade steel, passivated (X12CrNiS18 8)
- Material turbine wheel 1.4122 (for measuring range 1.0 ... 10 l/min) 1.0718 (for all other measuring ranges)
- Material sealings FKM
- Material sensor casing 3.1645
- Current consumption max. 50 mA @ 24 VDC
- Interface CANopen (CIA-DS-301)
- CAN standard 2.0A (opt. 2.0B)
- Transmission rate 20 ... 1,000 kBit/s
- Measured frequency (Hz) bytes 0 ... 3
- Measured volume flow (l/min) bytes 4 ... 7
- Resolution three decimal places
- Suitable measuring cable CAN cable
| Datasheet |
- Measuring principle volume flow
- Viscosity range 1 ... 10 mm²/s (cSt)
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C
- Storage temperature -20 ... +85 °C
- Supply voltage Ub 12 ... 24 VDC
- Error limit* ± 2.5 %
- Electrical measuring connector 5 pole device connector, M16 x 0,75
- Protection type (E
- N 60529 / IEC 529) IP 40
- Tightening torque 10 Nm (± 2 Nm)
- Calibration viscosity 1 mm²/s (cSt)
- Material turbine casing Edelstahl X12CrNiS18 8 (passiviert)
- Material turbine wheel 1.4122 (for measuring range 1.0 ... 10 l/min) 1.0718 (for all other measuring ranges)
- Material sealings FKM
- Material sensor casing 1.4301
- Suitable measuring cable MK 01
| Datasheet |
- Measuring principle volume flow<
- Viscosity range 1 ... 10 mm²/s (cSt)
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C
- Storage temperature -20 ... +85 °C
- Output signal 4 ... 20 mA
- Supply voltage Ub 12 ... 24 VDC
- Electrical measuring connector device connector AMP 3 pole, acc. to DIN 72585
- Protection type (EN 60529 / IEC 529) IP 69
- Tightening torque 10 Nm (± 2 Nm)
- Calibration viscosity 1 mm²/s (cSt)
- Material turbine casing high-grade steel, passivated X12CrNiS18 8
- Material turbine wheel 1.4122 (for measuring range 1.0 ... 10 l/min) 1.0718 (for all other measuring ranges)
- Material sealings FKM
- Material sensor casing 1.4571
- Suitable measuring cable customer-specific
| Datasheet |
- Measuring principle volume flow
- Viscosity range see order data
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C
- Storage temperature -20 ... +85 °C
- Output signal CANopen
- Supply voltage Ub 8.5 ... 30 VDC
- Electrical measuring connector 5 pole device connector, M12 x 1
- Protection type (EN 60529 / IEC 529) IP 67 (screwed)
- Tightening torque 10 Nm (± 2 Nm)
- Calibration viscosity 30 mm²/s (cSt)
- Material turbine casing Aluminium AlZnMgCu 1,5
- Material turbine wheel 1.4122 (for measuring range 1,0 ... 10 l/min) 1.0718 (for all other measuring ranges)
- Material sealings FKM
- Material sensor casing 3.1645
- Current consumption max. 50 mA @ 24 VDC
- Interface CANopen (CIA-DS-301)
- CAN standard 2.0A (opt. 2.0B)
- Transmission rate 20 ... 1.000 kBit/s
- Measured frequency (Hz) bytes 0 ... 3
- Measured volume fl ow (l/min) bytes 4 ... 7
- Resolution three decimal places
- Suitable measuring cable CAN cable
| Datasheet |
- Measuring principle volume flow
- Viscosity range see order data
- Medium temperature max. +120 °C
- Environmental temperature -20 ... +85 °C
- Storage temperature -20 ... +85 °C
- Output signal frequency (rectangle) / 4 ... 20 mA
- Supply voltage Ub 12 ... 24 VDC
- Electrical measuring connector 5 pole device connector, M16 x 0.75
- Protection type (EN 60529 / IEC 529) IP 40
- Tightening torque 10 Nm (± 2 Nm)
- Calibration viscosity 30 mm²/s (cSt)
- Material turbine casing Aluminium AlZnMgCu 1,5
- Material turbine wheel 1.4122 (for measuring range 1.0 ... 10 l/min) 1.0718 (for all other measuring ranges)
- Material sealings FKM
- Material sensor casing 1.4301
- Suitable measuring cable MK 01
| Datasheet |
Turbine Flow Meters – dynamic volumetric measurement for liquids & gases
Turbine flow meters determine flow by the rotational speed of a axial rotor in the flow stream. The pulse/frequency output is proportional to rate—ideal for dosing, filling, test benches, process/energy applications and, in dedicated designs, compressed air/gases.
Highlights: high repeatability, fast dynamics, wide measuring range, compact form factors. Options include multi-point linearization, reinforced bearings (e.g., carbide/ceramic), signal conditioning (NAMUR, open collector, 4–20 mA), ATEX/IECEx, and materials for chemical and hygienic service.
ICS Schneider Messtechnik supports selection & sizing (DN, viscosity, Reynolds, Δp), calibration/linearization (ISO/DAkkS), and integration into PLC/SCADA/IIoT—plus service over the lifecycle.
FAQ on Turbine Flow Meters
Answers on operating principle, accuracy, viscosity/Reynolds effects, installation, filtration, bearings, materials, signals, calibration and approvals.
Which media are turbine meters suited for?
Clean, low- to medium-viscosity liquids (water, fuels, solvents, certain oils by type) and—using dedicated designs—dry, clean gases (compressed air, technical gases).
How does the measurement work?
Flow drives the rotor; pickups (magnetic/inductive) detect blade passage. The pulse frequency is proportional to flow rate, the pulse count to total volume.
What accuracy is achievable?
Typically ±0.5%…±1.0% of rate within the calibrated range; repeatability often ±0.1%. Gas variants are application-dependent and usually higher.
What is the K-factor?
The K-factor is pulses per unit volume (e.g., pulses/l). It is provided on the calibration certificate and entered in the transmitter/PLC; optional multi-point K-factors improve linearity.
How do viscosity and Reynolds number influence results?
At very low Re, bearing/drag increases → under-registration; at very high Re some designs can over-register. The K-factor is viscosity-dependent—ideally calibrate at process temperature/viscosity.
What straight-run lengths are required?
As a rule of thumb: 10 D upstream, 5 D downstream without strong disturbances. After elbows/valves, consider a flow conditioner. Mount stress-free, follow the flow arrow, and size DN to keep velocities within the meter’s linear window and acceptable Δp.
Do I need filters/strainers?
Yes—to protect bearings/blades. Typical guidance: 80–100 µm strainer for liquids; for gases use 1–5 µm particulate filtration and condensate traps as needed.
What bearing options exist?
| Bearing | Characteristics | Use |
|---|---|---|
| Sapphire/ceramic | Very low friction, high precision | Low viscosity, high accuracy |
| Tungsten carbide | Highly wear-resistant | Slightly contaminated media, higher loads |
| Stainless/slide | Robust, economical | General purpose |
What temperature and pressure ratings are typical?
By size/material: liquids often −20…+120 °C (higher with special seals) and PN16…PN100. Gas versions are available up to PN40+.
Which materials and connections are available?
316L/1.4404, 1.4571, aluminium, brass (per medium). Connections: thread (G/NPT), flanges (PN/ANSI), and hygienic clamp options.
Are turbine meters suitable for gases?
Yes—gas turbine meters with pressure/temperature compensation are common. Use with dry, clean gases and ensure adequate inlet pressure.
What signal outputs are offered?
| Signal | Description | Typical use |
|---|---|---|
| Reed/OC/NAMUR | Pulse/frequency | Totalizing, dosing, PLC counters |
| 4–20 mA | Analog rate | Control loops, long cable runs |
| Pulse + 4–20 mA | Combined | Volume + trend/control |
| Communication | HART/Modbus/IO-Link | Parametrics, diagnostics, IIoT |
Is bidirectional measurement possible?
Some designs detect flow direction and provide direction signals. Many standard turbines are single-direction—check the datasheet.
How are calibration & linearization performed?
Multi-point calibration on a rig (e.g., 5–10 points) with storage of K-factors/polynomials in the electronics (EEPROM) to reduce non-linearity.
Are legal metrology/custody applications supported?
Yes—selected models comply with PTB/OIML/MID (e.g., OIML R117). Specify the legal framework and medium during selection.
What explosion-protection options exist?
Many models offer ATEX/IECEx for Zones 1/2 (gas) and 21/22 (dust). Ensure the sensor head and electronics are certified as a matching system.
How do I compensate temperature/density effects?
For variable temperature/density (especially gas/fuels), use a computing transmitter with T/p inputs for live correction.
What are start flow and turndown?
Start flow = minimum rate that produces stable pulses. Typical turndown is 1:10…1:20; with linearization and tailored electronics it can be higher.
What maintenance is required?
Clean media and proper filtration enable low-wear operation. Periodically check strainers; after medium changes, verify the K-factor. Avoid unsuitable solvents without material approval.
Common pitfalls & quick fixes
- Too little straight run → add a flow conditioner
- Particles/bubbles → fit strainer and air release/deaeration
- Viscosity mismatch → calibrate/compensate at process conditions
- Wrong K-factor setup → check certificate and enter correct values