Turbine type flow meter

Turbine type flow meter is one type of mechanical flow meters. Turbine flow meter use the mechanical energy of the liquid to rotate a rotor in the flow stream. Turbine flow meters measure the velocity of a variety of liquids (oil, water), gases (natural gas) and vapors. All types turbine flow meters, like: flange, sanitary flow meter, insertion, threaded connections etc .

Sino-Inst, one of turbine flow meter manufacturers, offers cost-effective turbine flow meters. High quility rotor tubine flow meters do reliable flow measurement, minimal maintenance required. Magnetic flow meters, mass flow meters and ultrasonic flow meters, all can measure the liquid flow rate. Turbine flow meters are cost-effective and offer reliable, measurement .

Advantages of turbine flow meters

1. High precision, generally be ± 1%, ± 0.5%.
2. Output pulse frequency signal ( 4-20mA analog output, RS485, HART optional). Suitable for total metering and connection with computer. No zero drift, strong anti-interference ability.
3. Compact and lightweight, easy installation and maintenance, and large circulation capacity.
4. Good repeatability. Short-term repeatability of 0.05 ~ 0.2%. Frequent calibration or online calibration can get very high precision.
5. Custom according to user needs. Such as: low temperature type, two-way, downhole type, mixed sand special type.
6. Pressure compensation can be performed under the pressure state in which the gas to be measured is stable.
7. The range is wide, medium and large caliber up to 1:20, small caliber is 1:10.
8. Useable for a wide range of applications. Suitable for gases AND liquids

Disadvantages of Turbine type flow meters

1. Frequent calibration checks needed.
2. The cleaning requirements of the medium are high, but the filter can be installed.
3. The flowmeter is easy affected by the flow velocity distribution. The flow regulator can be installed.
4. It is not suitable for places where the flow rate is drastically changing.
5. Not suitable for testing of corrosive media (While electromagnetic flowmeters can).
MediumNon-corrosive low velocity liquid without impurity
AccuracyClass 1.0, class 0.5
Flange standardGB/T 9119-2010, DIN, ANSI, JIS
Nominal pressure1.6MPa, 2.5MPa, 6.4MPa, 25MPa, 40MPa
OutputPulse, 4-20mA analog output, RS485 (Modbus-RTU protocol), HART
Diameter and installationFlange connection DN15-DN200
Screw connection: DN4-DN50
Loose flange connection: DN4-DN200
Medium temperatureDefault type T1: -20℃~+80℃  (Standard)
High temp. type T2: -20℃~+120℃  (OEM)
High temp. type T3: -20℃~+150℃(OEM)
Operation conditionOperating temperature: -20℃~+60℃
 Related humidity: 5%~90%
Atmospheric pressure: 86kPa~106kPa
Ingress protectionIP65
Explosion proofExdIIBT6 (explosion proof type)
Turbine flowmeters are speed flowmeters, also known as impeller flowmeters.
The impeller type flow meter calculates the volumetric flow rate of the fluid passing through the pipe,
by measuring the rotational speed of the impeller,
using the rotational angular velocity of the impeller,
placed in the fluid in proportion to the fluid flow rate.
Turbine flowmeter is one of the more mature high-accuracy instruments in flow meters.

The working principle of the turbine flowmeter:

The fluid flows through the sensor housing, and the blades of the impeller have a certain angle with the flow direction.
The momentum of the fluid causes the blade to have a rotational moment,
and the blade rotates after overcoming the friction torque and the fluid resistance.
The rotational speed is stable after the torque balance.
The speed is proportional to the flow rate.
The blade is magnetically permeable.
It is in the magnetic field of the signal detector (consisting of permanent magnet and coil).
The rotating blade cuts the magnetic field lines,
periodically changing the magnetic flux of the coil, so that the coil is induced at both ends.
The pulse signal is output.
This signal is amplified and shaped by the amplifier,
to form a continuous rectangular pulse wave with a certain amplitude.
The signal can be transmitted to the display instrument,
to display the instantaneous flow rate and cumulative amount of the fluid.
Within a certain flow range, the pulse frequency F is proportional to the instantaneous flow rate Q of the fluid flowing through the sensor.
The flow equation is: Q = 3600 × f / k
In the formula:
F——pulse frequency [Hz];
K——the meter factor of the sensor [1/m], given by the checklist. If [1/L] is used, Q=3.6×f/k
Q——the instantaneous flow rate of the fluid (under working condition) [m3/h];
3600 – conversion factor.
The meter factor of each sensor is filled in the verification certificate by the manufacturer,
and the k value is set in the matching display meter,
to display the instantaneous flow rate and the cumulative total amount.


  • Oil & Gas
    • Water injection
    • Test and production separators
    • Disposal wells
    • Hydraulic fracturing
    • Chemical injection
    • Natural gas pipelines
  • Aerospace/Defense
    • Engine Testing
    • Fuel flow measurement
    • Shipboard reverse osmosis systems
    • Monitor fuel supply to ship engines
  • Pharma-Bio Tech, Food & Beverage
  • Power Generation
    • Custody transfer
  • Industrial & Municipal
    • Building automation
    • HVAC
    • Water metering
  • Cryogenics
    • Liquids measurement for plant applications and truck deliveries
ItemsTurbine flow metersVortex flow meters
IntroductionA turbine flow meter is a speed meter used to measure the volumetric flow and total volume of low viscosity gases in a closed conduit. It has a wide range of uses in petroleum, chemical, metallurgical, and urban gas pipeline networks.Vortex flowmeters are mainly used for flow measurement of industrial pipeline media fluids. Such as gases, liquids, vapors and other media.
Measuring principleA multi-blade rotor (turbine) is used to sense the average flow rate of the fluid, and to derive a flow or total meter.Designed and manufactured according to the principle of Karman vortex. The fluid oscillation principle is applied to measure the flow rate.
When the fluid passes through the vortex flow transmitter in the pipeline,
the two vortexes proportional to the flow velocity are alternately generated after the vortex generator of the triangular prism,
and the vortex release frequency and the vortex generator flow. The average velocity of the fluid is related to the characteristics of the vortex generator.
Measured mediumNon-corrosive low velocity liquid without impurity. Natural gas.Liquid, gas, steam
Pressure1.6MPa, 2.5MPa, 6.4MPa, 25MPa, 40MPa1.6MPa, 2.5MPa, 6.4MPa, 25MPa, 40MPa
AccuracyPipe type: Class 1.0  Insertion type: Class 2.50.5% to 2.0% of reading
OutputPulse, 4-20mA analog output, RS485 (Modbus-RTU protocol), HARTVoltage pulse, 4-20mA output, HART, Modbus, RS485, RS232 options.
InstallationFlange connection DN15-DN200
Screw connection: DN4-DN50
Loose flange connection: DN4-DN200
Insertion: DN200 or more
Flange, clamp flange, insertion, threat, clamp connection
InstallationMore Turbine flow metersMore Vortex flow meters

Featured Turbine type flow meters

SI-3201 GAS Turbine Flow Meter
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SI-3204 Flange Type Turbine FLow Meter
SI-3204 Flange Type Turbine FLow Meter

Turbine type flow meter price

The price of a turbine flow meter is affected by the following factors:
Measured medium;
Pipe size
Pressure size
Connection method
Flow range
Material requirements;
output signal;
Whether explosion protection is required.


On the basis of ensuring the quality of the products, Sino-Insy guarantee the best price to our customers.

Sino-Inst is a Professional turbine flowmeter manufacturer and supplier.
Sino-Inst offers over 10 turbine flow meter products.
About 30% of these are liquid turbine flow meters, and others are water, fuel, natural gas turbine flow meters. Insertion type turbine flow meters are most widely used.
A wide variety of turbine flow meter options are available to you, such as free samples, paid samples.
Sino-Inst’s flow meters service for industrial applications, like:
Cooling water, industrial gas, corrosives and brine, chemical processing, mining,
Wastewater, energy, electronics, laboratories, medical, and many other industries.
Sino-Instrument sells through a mature distribution network,
that reaches all 50 states and 30 countries worldwide.
Flow meter products are most popular in Domestic Market, Southeast Asia, Europe,and America.

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