Liquid turbine flow meter is the main type of impeller flow meter. Turbine flow meter sensor uses a multi-blade rotor to sense the average flow rate of the fluid. Belongs to speed flow meter.

Liquid Turbine Flow Meter

Liquid turbine flow meter is the main type of impeller type flow (velocity) meter. It is composed of sensors and conversion display. The sensor uses a multi-blade rotor to sense the average flow rate of the fluid, thereby deriving the flow or total amount. Liquid turbine flow meter is suitable for measuring liquids that are not corrosive to stainless steel 1Cr18Ni9Ti, 2Cr13 and corundum Al2O3 in closed pipelines and are free of impurities. For milk, soybean oil, edible oil, diesel, purified water.

Liquid Turbine Flow Meter reference price: DN100. USD 600-700/pc.

Sino-Inst offers a variety of  Turbine flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Features of Liquid Turbine Flow Meter

  1. The repeatability is good, and the short-term repeatability can reach 0.05%~0.2%. It is precisely because of the good repeatability, such as frequent calibration or online calibration can get extremely high accuracy. It is the preferred flow meter in trade settlement;
  2. High precision, generally up to ±1%R, ±0.5%R, high-precision type up to ±0.2%R;
  3. Output pulse frequency signal. No zero drift, strong anti-interference ability;
  4. Can get very high frequency signal (3~4kHz). Strong signal resolution;
  5. Wide range. Medium and large diameters can reach 1:20, and small diameters are 1:10;
  6. The structure is compact and light. It is convenient to install and maintain, and has a large circulation capacity;
  7. Suitable for high-pressure measurement. No holes are required on the meter body, and it is easy to make a high-pressure meter;
  8. It can be made into an insert type, suitable for large-caliber measurement. The pressure loss is small, the price is low. It can be taken out continuously, and the installation and maintenance are convenient.

Liquid Turbine Flow Meter Datasheet

Instrument caliber and connection methodDN4, 6, 10, 15, 20, 25, 32, 40 use threaded connection;
(DN15, 20, 25, 32, 40) DN50, 65, 80, 100, 125, 150, 200 use flange connection
Executive standardTurbine flow sensor (JB/T9246-1999)
Accuracy class±1%R, ±0.5%R, ±0.2%R (specially required)
Range ratio1:10; 1:15; 1:20
Instrument material304 stainless steel, 316 (L) stainless steel, etc.
Measured medium temperature (℃)-20~+80℃;-20~+120℃; -20~+150℃;
Environmental conditionsTemperature -10~+55℃, relative humidity 5%~90%, atmospheric pressure 86~106kPa
output signalSensor: pulse frequency signal, low level≤0.8V, high level≥8V
Transmitter: two-wire 4~20mADC current signal
Power supplyA. External power supply: +24VDC±15%, ripple ≤±5% for 4-20mA, pulse output, R485, etc.
B. Internal power supply: 1 set of 3.0V10AH lithium battery, the battery voltage is normal when the battery voltage is 2.0-3.0V
Signal transmission lineSTVPV3×0.3 (three-wire system), 2×0.3 (two-wire system)
Transmission distance≤1000m
Signal line interfaceBasic type: Hausmann connector, explosion-proof type: internal thread M20×1.5
Explosion-proof gradeExiaIICT4 or ExdIIBT6
Protection levelIP65
Diameter (mm)Normal flow range (m3/h)Extended flow range(m3/h)Routine stress tolerance (MPa)Special pressure rating (MPa) (MPa)
DN 40.04-0.250.04-0.46.312、16、25
DN 60.1-0.60.06-0.66.312、16、25
DN 100.2-1.20.15-1.56.312、16、25
DN 150.6-60.4-86.3、2.5(Flange)4.0、6.3、12、16、25
DN 200.8-80.45-96.3、2.5(Flange)4.0、6.3、12、16、25
DN 251-100.5-16.3、2.5(Flange)4.0、6.3、12、16、25
DN 321.5-150.8-156.3、2.5(Flange)4.0、6.3、12、16、25
DN 402-20 1-206.3、2.5(Flange)4.0、6.3、12、16、25
DN 504-402-402.54.0、6.3、12、16、25
DN 657-704-702.54.0、6.3、12、16、25
DN 8010-1005-1002.54.0、6.3、12、16、25
DN 10020-20010-2001.64.0、6.3、12、16、25
DN 12525-25013-2501.62.5、4.0、6.3、12、16
DN 15030-30015-3001.62.5、4.0、6.3、12、16
DN 20080-80040-8001.62.5、4.0、6.3、12、16

Know more about: Turbine type Flow Meter for Liquid & Gas technology

Liquid Turbine Flow Meter Order Guide

LWGY Explain
Classify LWGY         Basic model,+5-24DCV power supply
LWGYA         Two-wire system current output,
remote transmission
LWGYB         Battery powered field display
LWGYC         field display/Two-wire system current output
LWGYD         RS485 communication output
Inside nominal
4       4mm,general turbine flow range 0.04~0.25m3/h
6       6mm,general turbine flow range 0.1~0.6m3/h
10       10mm,general turbine flow range 0.2~1.2m3/h
12       12mm,general turbine flow range 0.2~2m3/h
15       15mm,general turbine flow range 0.6~6m3/h
20       20mm,general turbine flow range 0.7~7m3/h
25       25mm,general turbine flow range 1~10m3/h
32       32mm,general turbine flow range 1.5~15m3/h
40       40mm,general turbine flow range 2~20m3/h
50       50mm,general turbine flow range 4~40m3/h
65       65mm,general turbine flow range 7~70m3/h
80       80mm,general turbine flow range 10~100m3/h
100       100mm,general turbine flow range 20~200m3/h
125       125mm,general turbine flow range 25~250m3/h
150       150mm,general turbine flow range 30~300m3/h
200       200mm,general turbine flow range 80~800m3/h
Anti-explosion A     No mark, non – explosive type
B     Anti-explosion
Accuracy class A   Accuracy 0.5 grade
B   Accuracy 1 grade
Turbine type A Wide range turbine
B  Ordinary turbine
  • DN4-DN40 caliber sensor is a threaded connection, the maximum working pressure is 6.3Mpa;
  • DN50-DN200 caliber sensor is a flanged connection, the maximum working pressure is 2.5Mpa;
  • The DN4-DN10 caliber sensor has straight pipe sections and filters.
  • Sensors with a diameter above DN15 can be supplied with straight pipe sections.
  • Sensors with DN25-DN40 caliber can also be made as flanged connections, but this must be stated when ordering.

Turbine Flow Meter Technology

Sino-Instrument standard piping liquid turbine flowmeter, indicate the flow rate and measure total throughput of a liquid line.

As liquid flows through the meter and over the rotor, the rotor turns at a speed that is directly proportional to the flow rate.

A magnetic pickup senses the rotor blades, as they pass and generates an electrical (sine wave) signal.

These electrical pulses are then transmitted to the flow measurement readout equipment.

Liquid Turbine Flow Meter Working Principle

Liquid Turbine Flow Meter is a speed type flow meter based on the principle of torque balance.

The fluid flows through the sensor housing. Because the blades of the impeller have a certain angle with the flow direction. The impulse of the fluid makes the blades have a rotational torque. After the friction torque and fluid resistance are overcome, the blades rotate. The speed is stable after the torque is balanced.

Under certain conditions, the speed is proportional to the flow rate.

Due to the magnetic permeability of the blade, it is in the magnetic field of the signal detector (composed of permanent magnets and coils). The rotating blade cuts the magnetic lines of force. The magnetic flux of the coil is periodically changed. Electrical pulse signals are induced at both ends of the coil.

This signal is amplified and reshaped by an amplifier. A continuous rectangular pulse wave with a certain amplitude is formed. It can be transmitted to the display instrument remotely. The instantaneous flow or total amount of the fluid is displayed.

Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow Q of the fluid flowing through the sensor. The flow equation is:

f——Pulse frequency [Hz]
k——The meter coefficient of the sensor [1/m3], which is given by the calibration sheet.
Q——The instantaneous flow of fluid (under working condition) [m3/h]
3600-conversion factor in seconds

The meter coefficient of each sensor is filled in the verification certificate by the manufacturer. The k value is set in the matching display instrument. The instantaneous flow and cumulative total can be displayed.

Common Liquid Turbine Flow Meter Applications

The liquid turbine flowmeter is a precision flow measuring instrument. The liquid turbine flowmeter and the corresponding flow totalizer can be used to measure the flow and total amount of liquid.

Liquid turbine flowmeters are widely used in metering and control systems in the fields of petroleum, chemical industry, metallurgy, scientific research, etc.

Liquid turbine flow meters equipped with sanitary joints can be used in the pharmaceutical industry.

Filling measurement of pure water produced by reverse osmosis desalination method
Filling measurement of pure water produced by reverse osmosis desalination method

In the application of reverse osmosis equipment, it can be used to supply process pure water in the pharmaceutical, chemical, electronic, electroplating and other industries. It can also be used as a production line for drinking bottled and bottled water, as well as food and beverage.

Field Application of Flowmeter in Thermal Power Plant System
Field Application of Flowmeter in Thermal Power Plant System

The instruments and meters used in thermal power plants mainly include temperature, pressure, liquid level, and flow. There are many types of flowmeter instruments in this system. Depending on the nature of the medium, different flow rates have different effects.

Boiler water supply process
Boiler water supply process

The treatment of boiler make-up water plays a vital role in the overall operation of the boiler. The application of liquid turbine flow meters directly affects the health and smooth operation of the process.

More Featured Liquid Flow Meters

Sino-Inst, Manufacuturer for liquid turbine flow meters. Like: gas turbine flow meter, gpi turbine flow meter. liquid turbine flow meter. Sanitary turbine flow meter. Insertion turbine flow meter, steam turbine flow meter. And natural gas turbine flow meter.

Sino-Inst’s turbine flow meters, made in China. Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

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