Target Flow Meter

The target flow meter is also known as the drag force flow meter. Insert a target (drag element) into the flow field. Measure the drag force on the inserted target and convert it to the flow velocity.

Target Flow Meter

The target flow meter is also called a drag force flowmeter. The target flow meter inserts a target (drag element) into the flow field. The target usually is a flat disc or a sphere with an extension rod. There will be a differential pressure. And then target flow meters measure the drag force on the inserted target and convert it to the flow rate. Sino-Inst manufactures target flow meters for liquid, gas, and steam measurement.

Sino-Inst, Manufacturer for differential pressure flow meters. Including the Orifice plate, Venturi, Annubar, etc. Suitable for liquid, gas, and steam flow measurement. Please contact our sales engineers for technical support!

Target Flow Meter Definition

Sino-Inst offers a Capacitive target flowmeter. A capacitive target flowmeter is a new type of capacitive force inductive flowmeter. Developed on the basis of traditional target flowmeter. And developed with new sensors and microelectronic technology. It has both orifice plate and vortex flowmeters.

The characteristics of no moving parts. High sensitivity, accuracy comparable to volumetric flow meters, and a wide range. The use of a chip-level capacitive force sensor and an efficient anti-overload structure design are the key cores for the new product to achieve high precision and high stability.

In addition, it has unique anti-interference and anti-impurity performance. Our capacitive target flow meters can replace the conventional flow measurement. It has good adaptability to difficult flow measurement conditions. Such as high viscosity, dirty media, easy to set and block, high temperature, low temperature, and strong corrosion.

It is widely used in petroleum, chemical industry, metallurgy, power. Pharmaceutical, environmental protection, food and other fields.

The target flow meters are applicable to the following ranges:

  • Diameter ,Φ15~Φ2000mm or bigger.
  • High and low temperature, -196°C~+450°C.
  • High pressure : 0~42Mpa.
  • Suitable for various media: gas, liquid (including high viscosity liquid, slurry), steam;
  • It is suitable for low-velocity media, and its minimum measurable flow rate is 0.08m / s.

Target Flow Meter Construction

The capacitive target flowmeter is mainly composed of a measuring tube (housing), a new capacitor.

It consists of a force sensor, chokes, integrated display, and output.

Target Flow Meter Construction

Features of Target Flow Meters

  • The whole instrument has a solid structure without moving parts, easy to disassemble.
  • Can choose a variety of anti-corrosion. And high and low temperature resistant materials (such as Hastelloy, titanium, etc.);
  • The whole machine can be made fully sealed without dead corners (welded form). Without any leakage points, and can withstand 42MPa high pressure;
  • Small pressure loss, only about 1/2 △ P of standard orifice plate;
  • Strong anti-interference and anti-impurity capabilities;
  • The instrument has a self-checking program. And the failure phenomenon is clear at a glance;
  • The sensor is not in contact with the measured medium, there is no component wear, and it is safe and reliable to use;
  • Dry calibration method can be used in situ, that is, weight hanging method. One-button operation can complete the calibration;
  • There are multiple installation methods to choose from. Such as online plug-in, low installation costs;
  • With integrated temperature and pressure compensation, direct output quality or standard square;
  • Optional small signal removal, non-linear correction, and filtering time can be selected;
  • It can accurately measure the gas and liquid flow under various normal temperature. High temperature 500 degrees, and low temperature -200 degrees;
  • Accurate measurement, accuracy can reach 0.2%;
  • Good repeatability, generally 0.05% to 0.08%, fast measurement;
  • Can change the range of resistance (target) according to actual needs;
  • Low-power battery on-site display, can directly read the displayed value online. And the display can read the instantaneous and cumulative flow and percentage bar graph at the same time;
  • Simple and convenient installation and extremely easy maintenance;
  • Multiple output formats, which can transmit various parameters remotely;
  • Strong vibration resistance, pulsating flow can be measured within a certain range.

Target flow meters types

Technical Data of Target Flow Meter

Item                                         Target flowmeter Performance, Parameters
MediumLiquid, Gas, and Steam
CaliberPipe type 15~300mm   
Clamp type 15~600mm    
Plug type100~2000mm
Accuracy± 0.2    ~   ± 1.5%FS
Medium Temperature-196° C~+450° C
( Confirming the temperature range before purchase)
Media temperature-20   ~ +70 (normal temperature type)
-196 ~   +700 (high/low temperature type)
Precision± 0.2%          ± 0.5%          ± 1.0%            ± 1.5%             ± 2.5%
Range1: 3           1: 5        1: 10        1: 10 1: 10(Steam)
CompensationTemperature compensation; Pressure  compensation
Power Supply3.6V lithium battery, 24V DC
OutputLCD display, and 4~20mA, 0~10V, impulse or RS485 (Optional)
Material of measure tubeCarbon Steel; 304; 316L; Being able to provide other according to user requests
Explosion- Prevent SymbolExiallCT4, ExiallBT4
Protection RankIP65; IP67
Features* Installation is simple and convenient, easy to maintain
* A variety of output forms, spread far and wide variety of parameters
* Anti-vibration is strong, within a certain range can be measured pulsatile flow
* Anti-jamming, anti-contamination ability to exceptionally strong

Advantages of Target flow meters:

  • They are useful for difficult measurements. Such as slurries, polymer bearing and sediment-bearing materials corrosive mixtures, etc.
  • They provide good accuracy when calibrated for specific streams.
  • They are good for relatively high temperatures and pressures.
  • Low initial set up cost
  • Can be used with a wide variety of fluids, even viscous fluids and slurries.
  • Can be used in abrasive, contaminated, or corrosive fluid flow
  • Can be made to measure flow velocity that is sporadic or multi-directional with sphere drag element designs
  • Can be used for any type of liquid, gas, or steam cryogenics.
  • There is no moving parts such as bearings, to wear out causing failures.
  • High reliability where life tests have been made to 20,000,000 cycles.
  • Can be used for any line size from 0.5 inches and up with any type of mounting.
  • Range/fluid changes accomplished by simply changing targets.
  • Turndowns aprox.15:1
  • Several materials are available. Among them 303/304 SS, 316 SS, hastelloy and inconel.

Disadvantages of target flow meters:

  • Calibration must be verified in the field.
  • Pressure drop is inevitable due to the rod and the drag element
  • In-line mounting required in these flowmeters.
  • They have a limited calibration data.
  • In case of target flowmeters no-flow conditions must exist for zeroing

Target Flow Meters Applications

Gas: gas, air, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine, etc.

Liquid: heavy oil, paraffin, asphalt, sulfuric acid, cooking oil, residue oil, acetone, diesel, mine water, detergent, soy sauce, gasoline, silicone oil,

Syrup, solvent, perfume, seawater, aviation kerosene, soap ketone, glucose, canola acid, saltwater, paste, ink, coolant,

Glycol, mineral oil, liquid sugar, hydrochloric acid, automotive coatings, resin, butter, vegetable oil, liquid oxygen, shampoo, toothpaste, gel,

Fuel, milk, bleach, conditioner, soda, additives, cleaning agents, alkaline, ammonia, marine oil, chemical reagents, kerosene,

Glycerin, dye, water, nitric acid, high boiling point organic solution, lard, alcohol, oil, ethylene, polypropylene, methyl benzyl, etc.

Steam: Superheated steam, saturated steam.

Extended reading: Vortex Steam Flow Meter

Application Cautions for Target Flowmeters

  • Be careful when operating target flowmeters low in their flow range. Because accuracy can be compromised at these flow rates.
  • Avoid abrasive fluids. Because the target can be damaged and measure inaccurately.
  • Fluids that coat the target can cause it to become heavy. Such that the force measurement can become inaccurate and unresponsive to flow changes.
  • These flowmeters should not be applied to slurries and high viscosity liquids.
  • Calibration is an important part of ensuring accurate operation of target flowmeters.
    • Pressure effects, physical effects, and flowmeter orientation can affect the zero adjustment of target flowmeters.
    • After calibrating the target flowmeter (typically with weights), be sure to zero target flowmeters after installation with a full pipe under no flow conditions. To ensure compensation for these effects in the final installation.
    • This procedure also compensates for the calibration shift that can occur when the orientation of the flowmeter during calibration is different than its installed orientation.
    • In general, in-situ zero adjustment should be performed after re-installing target flowmeters.
  • Operating a target flowmeter above its maximum flow rate can cause the calibration to shift and potentially damage the suspension system of the flowmeter.
  • Note also that operating target flowmeters continuously for extended periods of time can cause a mechanical shift to occur that can affect the zero. Because the target may not return to exactly the same position after being exposed to forces over time.
  • Rapidly changing flow, such as slug flow conditions, two-phase flow, and start-up conditions (gas to liquid transitions). Can similarly affect the mechanics of the target flowmeter and hence its zero. Therefore, it is advisable to periodically verify the zero adjustment of target flowmeters.

Target Flow Meter Working

When the medium flows in the measuring tube, the pressure difference caused by its own kinetic energy passing through the blocking member (target). And has a force on the blocking member. The magnitude of the force is proportional to the square of the velocity of the medium.

The mathematical way is as follows:
F = CdAρ • V2 / 2

In the formula: F —— the force of the choke (kg)
Cd-object resistance coefficient
A ——Axial projection area of ​​the choke on the measuring tube (mm2)
ρ ——Density of medium under working conditions (kg / m3)
v-average flow velocity of the medium in the measuring tube (m / s)
The force F received by the choke member (target) is transmitted to the capacitive force sensor via a rigidly connected transmission member (stem).

And the capacitive force sensor generates a voltage signal output:
V = KF
In the formula:
V——Voltage output by the capacitive force sensor (mV), K——Proportional constant, F——The acting force of the choke (target)
So, after the voltage signal is pre-amplified, AD converted. And processed by the computer. The corresponding instantaneous flow and cumulative total can be obtained.

How Target Flowmeters Work

Target flowmeters measure flow by measuring the amount of force exerted by the flowing fluid on a target suspended in the flow stream.

The force exerted on the target by the flow is proportional to the pressure drop across the target.

Like differential pressure flowmeters. Bernoulli’s equation states that the pressure drop across the target (and hence the force exerted on the target) is proportional to the square of the flow rate.

Using this relationship, 10 percent of full scale flow produces only 1 percent of the full scale force.

At 10 percent of full scale flow, the target flowmeter accuracy is dependent upon the transmitter being accurate over a 100:1 range of force.

Transmitter accuracy is typically degraded measuring low forces in its range, so flowmeter accuracy can be similarly degraded.

So, this non-linear relationship can have a detrimental effect on the accuracy and turndown of target flowmeters.

Remember that of interest is the accuracy of the flow measurement system — not the accuracy of the transmitter.

How to Use Target Flowmeters

  • Target flowmeters inferentially measure the flow of liquids and gases. Such as water, air, industrial gases, and chemicals.
  • Be careful using target flowmeters on fluids that can coat the target. Because the flowmeter accuracy can be degraded.
  • This flowmeter can be applied to sanitary, cryogenic liquids, relatively clean, and corrosive liquids.
  • Thematerials of construction of all wetted parts, including the flowmeter body and seals, should be considered.
  • Inline target flowmeters are available up to approximately 6 inches in size.
  • Insertion target flowmeters are available for larger line sizes.
  • Applications requiring sanitary piping systems are often found in the pharmaceutical and chemical industries. Such as in the manufacture of drugs and vitamins.
  • Sanitary applications are especially prevalent in the food and beverages industry where cleanliness is important.
  • Applications for target flowmeters are found in the mining, mineral processing, pulp and paper, power, petroleum, chemical, and petrochemical industries.
  • Common applications include the measurement of process and cooling water flows.

More Technical Support

How does a turbine flow meter work?

How does a vortex flowmeter work?

What does a Coriolis meter measure?

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As the most accurate and also the most expensive technology, Coriolis mass flow meters are the main instrument type used in scientific applications. They can measure corrosive and clean gases and liquids.

Coriolis mass flow meters are designed and produced according to the world’s latest Coriolis technology. It has a better appearance, stability, and accuracy. It can measure the mass flow of fluids flowing through the pipeline and is widely used in alternative energy, oil and gas, chemical, food, and other fields. Beverages, industrial energy, marine, metal and mining, power, pulp and paper, water and wastewater industries, etc.

Flow meters are the eyes of industrial production. Flow measurement is one of the components of measurement science and technology. It is closely related to the national economy, national defense construction, and scientific research. Doing this job well plays an important role in ensuring product quality, improving production efficiency, and promoting scientific and technological development. Especially in today’s energy crisis and the era of increasing automation of industrial production, the status and role of flow meters in the national economy have become more obvious.

Turbine flow meters are velocity flow meters, also called impeller flow meters. Can be used to measure the instantaneous flow and cumulative flow of liquids and gases.

Turbine flowmeters are widely used in flow measurement: petroleum, organic liquids, inorganic liquids, liquefied gas, natural gas, coal gas and cryogenic fluids. Turbine flowmeter signals can be divided into pulse signals or current signals (4-20mA). It is suitable for use with secondary display, PLC, DCS and other computer control systems.

Turbine Flow Meter reference price: USD 200-1700/pc.

Vortex shedding flow meter is also called Vortex flow meter. Vortex shedding flow meter is suitable for measuring steam flow rate as well as liquids and gases.

Vortex shedding flow meter, easy installation, low cost, analog, and 4-20mA output. Pressure & temperature compensation can improve the sensor for more accurate measurement. Vortex shedding flow meter is suitable for measuring steam and various liquids and gases. When the fluid flows through the assembly line of the vortex flowmeter, a vortex is formed. The frequency of vortex shedding is directly proportional to the fluid velocity.

Vortex shedding flow meter reference price: USD 200-1500/pc.

Sino-Inst offers over 10 target flow meters for flow measurement. About 50% of these are liquid flow meters, 40% is the gas flow sensor and 20% are steam flow meter.

A wide variety of flow meters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Target flow measurement instrumentation, located in China.

Request a Quote

Industrial Inline Air Flow Meters

What is air flow meter?

An Air Flow Meter is the flow meter that measures industrial air velocity. Most of the time, people talk about air flow meters means compressed air flow meters. We are discussing here all air flow meters, including compressed air flow meters.

Vortex Flow Meters

Compressed Air Flow Meter, is the digital flow meter work for the air compressor. Air consumption is important info for industrial inline gas flow pipes. According to the measurement conditions, a compressed air flow meter could be of different types. Thermal mass flow meters, Ultrasonic flow meters, vortex flow meters, Turbine flow meters. And the differential pressure flow meters (Orifice plate ) are also suitable for compressed air. With the Pressure and Temperature compensation. Sino-Inst’s compressed air flow meters are more affordable and complete.

There are many types of instruments that can be used to measure air. However, there are not many types of airflow actually used in the field according to their principles. The most important ones are rotameter, throttling differential pressure flowmeter, vortex flowmeter, gas turbine flowmeter, and averaging velocity tube flowmeter.

Extended Reading: Digital air flow meters

Featured Inline Air Flow Meters

Air flow meters types

The Carmen vortex refers to the placement of a cylindrical or triangular object in the fluid. Two rows of vortices with opposite rotation directions will be generated downstream of this object.

More about Types Of Air Flow Measurement Instruments.

An ultrasonic transmitting probe and a receiving probe are oppositely installed on both sides of the downstream pipeline of the Carmen vortex generator. Due to the influence of the Carmen vortex on the air density, the time from the transmitting probe to the receiving probe of the ultrasonic wave becomes later than that of the non-vortex and a phase difference occurs. By processing this phase signal, a vortex pulse signal can be obtained.

The working principle of the hot film type air flow meter is similar to that of the hot wire type air flow meter, and they all work with Wheatstone bridge. The difference is that the hot film type does not use platinum wire as a hot wire. But uses a thick film process to make the hot wire resistance, compensation resistance, and bridge resistance on the same ceramic substrate.

In the process of generating the Carmen vortex, the air pressure on both sides of the vortex generator will change. The pressure acts on the metal foil through the pilot hole, causing it to vibrate. When light from a light-emitting diode strikes a vibrating metal foil. The reflected light on the metal foil received by the phototransistor is vortex-modulated light. And its output is demodulated to obtain a frequency signal representing the air flow.

When no air flows, the bridge is in equilibrium. The control circuit outputs a certain heating current to the hot wire resistance RH. When there is air flowing, the heat of RH is absorbed by the air and becomes cold. Its resistance value changes. The bridge loses Balance. If the temperature difference between the hot wire resistance and the intake air is kept constant and constant, the current IH flowing through the hot wire resistance must be increased. Therefore, the hot-wire current IH is a function of the mass air flow.

The vane type air flow meter has a simple structure and high reliability. Yet, it has a large volume, large intake resistance and slow response.

Read more about: Beginner’s Guide: Variable area flow meter

Inline air flow meter cfm-scfm-lpm

Inline air flow meter cfm

CFM is a common imperial flow unit, cubic feet per minute.
For a certain volume of air flow passing in a unit time, m3/h air volume unit is generally used in China. Other countries also use the British air volume unit cfm (cubic foot per minute). That is ft3/min cubic feet/minute,
1CFM=28.316846592 L/MIN=0.028316847 m3/min

CFM traffic is divided into SCFM and ACFM.

Inline air flow meter scfm

SCFM English standard cubic foot per minute means standard cubic foot per minute, British flow unit. Both ACFM & SCFM are units of measurement for English flow
ACFM=actual flow rate ft^3/min

SCFM=standard flow rate ft^3/min

1 cubic meter = 35.314724827664 cubic feet
1Nm^3/min=35.315 SCFM
1 liter/minute=0.03531SCFM
1 liter=0.03531SCFM

Inline air flow meter lpm

LPM is liter/minute.

Read more about Inline air flow meter units conversion

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Air flow meter price

The price of AIR flow meters are decided by flollowing factors:

  • Pipe diameter;
  • Flow range;
  • Measured medium;
  • Whether it is corrosive;
  • Whether explosion protection is required;
  • Whether it needs local display;
  • Connection method;
  • Measure pressure;
  • Measure temperature;
  • Signal output;
  • Accuracy requirements;
  • Material requirements;

Extended reading: Gas Rotameter Tips

Important factors when selecting flow metering devices are

  • accuracy
  • cost
  • legal constraints
  • flow rate range
  • head loss
  • operating requirements
  • maintenance
  • lifetime

These factors are more or less related to each other. Example – the cost of flow meters increases with accuracy and lifetime quality.


What is an air flow meter called?

An airflow meter is a device that converts the inhaled airflow into electrical signals. Airflow meter is also often called gas flow meter, air mass flow meter, compressed air flow meter, etc.
Know more about Air flow meter From Wikipedia.

Sino-Instrument offers over 50 flow meter for flow measurement.

About 50% of these are differential pressure flow meters, 40% are the liquid flow sensor, and 20% are Ultrasonic Level Transmitter and mass flow meter.

A wide variety of flow meters options are available to you, such as free samples, paid samples.

Sino-Instrument is a globally recognized supplier and manufacturer of flow measurement instrumentation, located in China.

Request a Quote

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Turbine type Flow Meter

Turbine type flow meter is a Volume flowmeter. Turbine flow meters use the mechanical energy of the liquid or gas to rotate a rotor in the flow stream. The rotational speed of the rotor is proportional to the velocity of the fluid. In multiple industries, Turbine meters are used to measure the velocity of a variety of liquids, gases and vapors.

Turbine flow meter is the most popular equipment to measure flow electronically. Offer a wide flow and application rangeability. Turbine Flow Meters are easy to maintain, durable and versatile.

Turbine Flow Meters

What is a turbine flow meter?

A turbine flowmeter is a flowmeter that uses a turbine for measurement. It first converts the flow rate to the speed of the turbine. And then converts the speed into an electrical signal that is proportional to the flow. Turbine flow meter is used to detect the instantaneous flow and the total accumulated flow. And its output signal is frequency, which is easy to digitize.

Turbine flow meter advantages and disadvantages

Turbine Meter Advantages

  • The cost is moderate.
  • Very good at clean, low viscosity fluids of moderate velocity and a steady rate.
  • Turndown is very good as it can read very low compared to the greatest flow.
  • They are reliable if put in a clean fluid especially if it has some lubricity.
  • AGA and API approved for custody transfers.
  • They do cause some pressure drop where that may be a factor such as gravity flows.
  • High accuracy. Among all flowmeters, it is the most accurate flowmeter.
  • No zero drift, good anti-interference ability.
  • High accuracy. Among all flowmeters, it is the most accurate flowmeter.
  • No zero drift, good anti-interference ability.

Turbine Meter Disadvantages

  • Not reliable for steam.
  • Bearings wear out.
  • Requires constant backpressure to prevent cavitation.
  • Accuracy adversely affected by bubbles in liquids.
  • Turbine meters can be used with clean liquids and gases only (may need to install a strainer upstream to prevent damage from particulates).
  • Not applicable for measuring corrosive fluids.
  • May not function properly with high viscosity fluids where the flow profile is laminar.
  • Cannot maintain calibration characteristics for a long time.

Turbine flow meter principle

Turbine meters are simple to operate and maintain. Turbine type flow meter is a reliable, cost-effective method for accurate flow measurement. Turbine flow meters are designed to maximize throughout and minimize pressure drop. Turbine meters can maintain high flow rates over an extended flow range and offer pulse output linear to the flow rate. The turbine meters also minimize fluid measurement uncertainty. By delivering high-frequency pulse resolution to account for minute increments of the flow rate.

A turbine flow meter is constructed with rotor and blades. Turbine meters use the mechanical energy of the fluid to rotate the rotor in the flow stream. The turbine, installed in the fluid pipeline, is supported by bearings at both ends. When the fluid passes through the turbine, the fluid impacts the turbine blades and drives the turbine blades to rotate. The sensor of the turbine flowmeter measures the flow rate through the angular velocity of the turbine blades. The method used by the turbine flowmeter is that the angular velocity of the blade is proportional to the fluid velocity.

Turbine flow meter’s angular velocity is detected by a sensing coil mounted on the casing. Turbine blades cut magnetic field lines generated by permanent magnetic steel in the casing. Changes in the magnetic flux of the sensing coil. The sensing coil sends the detected periodic change signal of the magnetic flux to the amplifier of the measuring instrument. The amplifier amplifies and shapes the signal.At the same time, the pulse signal is sent to the frequency current conversion circuit. Convert the pulse signal into an analog current amount, which then indicates the instant Flow value.

Liquid Turbine Flow Meters

Extended reading: Turbine Flow Meter Specification

A flow transmitter processes the pulse signal to determine the flow of the fluid. Flow transmitter and sensing systems are available to sense flow in both the forward and reverse flow directions. 

Turbine flow meter Equation

In 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——meter coefficient [1 / m] of the sensor, given by the checklist. If [1 / L] is the unit

Q = 3.6 × f / kQ——the instantaneous flow of the fluid (in the working state) [m3 / h];

3600-conversion factor.

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

Extended reading: Quantitative control with turbine flowmeter

What is K factor in turbine flow meter?

The turbine meter measures volumetric flow, however the pulses produced vary depending on the meter. The variation is accounted for by a K-factor. The K-factor is the number of pulses per unit volume.

Simply stated a K-factor is a dividing factor. The term is usually encountered. When dealing with pulse signals although analog K-factors are sometimes used.

How do you calculate K factor for a turbine flow meter?

The frequency of the output pulse is proportional to the flow through the flowmeter, and its proportionality factor K is:

K = f / qv


f–the output pulse frequency of the turbine flowmeter;

qv–flow through the flowmeter.

This proportionality factor K is also called the meter factor of the turbine flowmeter.

Gas turbine flow meter

Gas Turbine Flow Meters applications

Gas Turbine Flow Meter, is the flange type turbine flow meter. Turbine flow meter is the most popular equipment to measure flow electronically. They offer a wide flow and application rangeability. 

Sino-Instrument’s GAS Turbine Flow Meter, is perfect choice for natural gas flow rate measurement. Turbine flow meters are suitable for gas and liquid measurement. They offer a wide flow and application rangeability. Turbine Flow Meters are easy to installation, maintain, durable and versatile.

Turbine water flow meter

Liquid Turbine Flow, is the turbine flow meter that suitable for liquid flow rate measurement. Like water flow, Diesel flow. Turbine flow meter is the most popular equipment to measure flow electronically. They offer a wide flow and application rangeability. Turbine Flow Meters are easy to maintain, durable and versatile.

Full bore turbine flow meters are suitable for hot and cold water applications. The impeller which is of modern design, rotates on stainless spindles mounted in the measuring chamber. The impeller is made of self-cleaning synthetic resin. The helix aligns with the pipe axis. The complete metering unit is easily removable from the meter body. And is designed to ensure high flow-rate with the smallest headloss. Versions for warm water up to 90°C and telemetering (complete with a pulse output) are also available.

Liquid Turbine Flow Meters

Read more Turbine Flow Meter Application Case: Demineralized Water.

Low flow turbine flow meter

The small Diameter (small flow) liquid turbine flow meter, is a precision flow measuring instrument,that can be used to measure the flow and total volume of liquids. The structure is explosion-proof and can show the total flow, instantaneous flow and percentage of flow fullness. It is widely used in measurement and control systems in petroleum, chemical, metallurgical, scientific research and other fields. Sensors equipped with sanitary fittings can be used in the pharmaceutical industry.

Turbine flow meter price

Sino-Inst is a Turbine flow meter manufacturer, China. Sino-Inst offers over 10 turbine flow meter products. A wide variety of turbine flow meter options are available to you, such as free samples, paid samples. The price of turbine flow meters are decided by flollowing factors:

  • Pipe diameter;
  • Flow range;
  • Measured medium;
  • Whether it is corrosive;
  • Whether explosion protection is required;
  • Whether it needs local display;
  • Connection method;
  • Measure pressure;
  • Measure temperature;
  • Signal output;
  • Accuracy requirements;
  • Material requirements;

For example, Model DN15 Turbine flow meter’s price is around USD 140.00/pc.

More about: Best Price Turbine Flow Meters From Reliable Manufacturer

Electromagnetic flow meter

A Magnetic flow meter, also called electromagnetic flow meter, mag flow meter, or magmeters. A magnetic flow meter is a volumetric flow meter that works with principle of magnetic technology. Magnetic flow meters do not have any moving parts. An electromagnetic flowmeter consists of two parts: Electrode (sensor) and Transmitter. Installation types of magmeters could be: Compact, remote, insertion.

Magnetic flow meter is ideal for wastewater applications or any dirty liquid which is conductive or water based. Magnetic flow meters are also ideal for applications where low-pressure drop and low maintenance required. A range of liner materials, electrode options, and line sizes accommodate a wide variety of process application.

Extended reading: Industrial Magmeters

How does an electromagnetic flow meter work?

Magnetic flow meters use a magnetic field to generate and channel liquid flow through a pipe.
A voltage signal is created, when a conductive liquid flows through the flowmeter’s magnetic field.
The faster the flow of the fluid, the greater the voltage signal generated.
Electrode sensors located on the flow tube walls pick up the voltage signal. And send it to the electronic transmitter, which processes the signal to determine liquid flow.

More about Magnetic flow meter.

What is Flow Transmitter working principle?

Flow Metering Principles

From the measurement principle, the flowmeter can be divided into Volumetric flowmeters and Mass flwo meters.


  • Differential Head type
    • Orifice plates
    • Venturi meters
    • Annubar
  • Differential Area type (Rotameters)
  • Electromagnetic flowmeters
  • Ultrasonic flowmeters
  • Turbine flowmeters
  • Vortex flowmeters
  • Positive Displacement Meters


For different working principle, We offer different types of flow meters, like:

How does a pulse flow meter work?

The frequency signal is converted into a digital signal for display. This is called a pulse flow meter. The pulse is the output signal of the flow meter. It is a pulse output. Now the standard output of most flow meters is 4-20MA, which can also be made into a pulse output.

Turbine flowmeters use the mechanical energy of the fluid to rotate a “pinwheel” (rotor) in the flow stream. Blades on the rotor are angled to transform energy from the flow stream into rotational energy. The rotor shaft spins on bearings. When the fluid moves faster, the rotor spins proportionally faster. Turbine flowmeters now constitute 7% of the world market.

Shaft rotation can be sensed mechanically or by detecting the movement of the blades. Blade movement is often detected magnetically, with each blade or embedded piece of metal generating a pulse. Turbine flowmeter sensors are typically located external to the flowing stream to avoid material of construction constraints that would result if wetted sensors were used. When the fluid moves faster, more pulses are generated. The transmitter processes the pulse signal to determine the flow of the fluid. Transmitters and sensing systems are available to sense flow in both the forward and reverse flow directions.

Where are flow meters used?

Where are flow meters used? Or, What does a flow meter measure?

At industrial sites, meters that measure fluid flow are referred to as flow meters or flow sensors.

It is one of the most important instruments in industrial measurement.

With the development of industry, the accuracy and range of flow measurement requirements are getting higher and higher.

In order to adapt to various purposes, various types of flowmeters have been successively launched,

widely used in oil and gas, petrochemical, water treatment, food and beverage.

Industries such as pharmaceuticals, energy, metallurgy, pulp and paper, and building materials.

  1. Measurement of gas mass flow in industrial pipelines
  2. Smoke flow rate measurement from the chimney
  3. Calciner flue gas flow measurement
  4. Air flow measurement during gas process
  5. Compressed air flow measurement
  6. Gas flow measurement during semiconductor chip manufacturing process
  7. Gas flow measurement in sewage treatment
  8. Gas flow measurement in heating ventilation and air conditioning systems
  9. Flux recovery system gas flow measurement
  10. Measurement of combustion gas flow in a combustion boiler
  11. Gas flow measurement of natural gas, flare gas, hydrogen, etc.
  12. Measurement of carbon dioxide gas flow during beer production
  13. Measurement of gas mass flow in the production process of cement, cigarette and glass factory
  14. Open channel

Sino-Instrument offers over 50 flow meter for flow measurement.

About 50% of these are differential pressure flow meters, 40% is the liquid flow sensor, and 20% are Ultrasonic Level Transmitter and mass flow meter.

A wide variety of flow meters options are available to you, such as free samples, paid samples.

Sino-Instrument is a globally recognized supplier and manufacturer of flow measurement instrumentation, located in China.

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