Slurry & Solids Flow Meters

Wastewater Flow Meter

Flow measurement of Slurry and Solids is one of the most challenging applicaiton for magmeters. In wide industrial slurry pipelines, Magnetic Flow meters are ideal choice. Mag flow meters are ideal for any dirty liquid which is conductive or water based. Some types Ultrasonic flow meters can also measure flow rate of slurry, but the cost is too high. So, if you need to measure the flow of slurry or solids, We recommend using an electromagnetic flowmeter.

Specifications of Slurry Flow Meter

  • Measurement medium: mud, pulp, cement slurry
  • Product classification: compact type slurry flow meter, Remote type slurry flow meter
  • Measurement error: ± 1.0% or ± 0.5%
  • Dielectric conductivity:> 5μs / cm
  • Measurable velocity range: 0.1m / s — 15m / s
  • Measurement ratio: 1: 150 (If necessary, you can customize a wider range ratio)
  • Power supply: DC24V or AC220V
  • Signal output: pulse signal or 4-20mA current signal
  • Communication interface: support 485 communication
  • Communication protocol: MODBUS, HART, Profibus, etc.
  • Normal working environment temperature: -25 ℃ —— + 60 ℃
  • Measurable medium temperature: -20 ℃ —— + 60 ℃
  • Flow direction: forward, normal, net flow
  • Rated working pressure:
    • DN10 — DN150 ≤1.6Mpa (high pressure can be customized)
    • DN200 — DN350 ≤1.0Mpa (high pressure can be customized)
    • DN400 — DN1000 ≤0.6Mpa (high voltage can be customized)
  • DN1100 — DN2200 ≤0.25Mpa (high voltage can be customized)
  • Connection method: flange connection
  • Requirement for straight pipe section: front straight pipe section ≥5DN, rear straight pipe section ≥2DN
  • Explosion-proof grade: Exd [ia] qIICT5
  • Protection level: IP65, optional IP68

Benefits of Magnetic flow meter for slurry

  • Stable and reliable process control in noisy and slurry applications maximize the productivity.
  • Longer life-time by robust design
  • Minimal downtime and maintenance work.

Working Principle of Slurry Flow Meters

Different types and designs of flow meter are available. Choose the best one depends on the application and the type of liquid being measured. Electro-magnetic meters are typically used for slurry and corrosive liquids. Because magnetic flow meters are able to measure these substances accurately.

Keeping accurate records is essential. Because we need to know exactly how much slurry has been spread in every field, and to demonstrate full regulatory compliance.  Today’s modern slurry flow meter designs can help to achieve this.

More about: Sewage Flow Meter Selection

What is the principle of magnetic flow meter? – Faraday’s Formula

Faraday’s Formula
E is proportional to V x B x D where:

E = The voltage generated in a conductor
V = The velocity of the conductor
B = The magnetic field strength
D = The length of the conductor

To apply this principle to flow measurement with a magnetic flow meter. First is to state that the fluid being measured must be electrically conductive for the Faraday principle to apply.As applied to the design of magnetic flow meters, Faraday’s Law indicates that:the signal voltage (E) is dependent on V, B, D.V is the average liquid velocity ;B is the magnetic field strength ;D is the length of the conductor ( which in this instance is the distance between the electrodes).

Guess you like to know more about: Magnetic flow meter working principle and types

Why do you need a slurry flow meter?

When spreading any type of slurry or digestate, accuracy is essential. This means it is important to monitor the spreading process with a slurry flow meter. So that you can be sure of consistent application across the area which is being treated.

At the same time as ensuring that enough slurry is applied, however, it is equally vital not to use more than is needed. This is important for several reasons. One is that over-application is a waste of valuable slurry resources, meaning you spend more than is necessary. Slurry is one of the most cost-effective ways of fertilising agricultural land. But only the application carried out properly..

Spreading too much slurry can also lead to a number of pollution issues. Which could risk failing to comply with legal regulations. Especially if it involves contamination of soil or water courses.

Challenges for Slurry Flow Meter

Flow meters designed for slurries depend on several factors:

  • The flow velocity and profile. A balance of keeping solids moving, but not too fast.
  • The amount of solids in the carrier fluid.
  • The solids properties in the carrier fluid.  They vary in many qualities including shape and size.
  • Chemical composition of the fluid. Liners for corrosive fluids.
  • Solid Abrasiveness. Rough solids cause system noise that interferes with the measurement. Abrasiveness liners can be used if needed.
  • Heavy slurry noise may affect on the measurement accuracy and stability
  • Shorter replacement cycle because of the mechanical damage caused by slurry.
  • High density red-mud covered on the electrodes requires frequent maintenance for the cleaning.

Sino-Instrument’s solutions for Slurry and Solids flow

Looking for a meter to monitor slurry spreading? Sino-Instrument offers high-quality magnetic flow meters which complies with many official standards. It is known for being highly reliable and durable, needing little maintenance to keep it in good working order. The magnetic flow meter is used in the waste water industry and other sectors as well as for slurry, which is a testament to its quality.
To monitor slurry application, the magnetic flow meter can be easily installed within the pipeline, positioned either near to the pump or on the applicator. It has strong liners which are resistant to slurry, and will measure the flow rate accurately, usually in m3 per hour.
Non-retained liners (extruded liner) are susceptible to failures as a result of vacuum conditions that can be created due to a pump or valve failure. Besides, meters that have extruded liners generally have a shorter life due to the aggressiveness of the chemicals used. Sino-Instrument uses an injected molded PFA liner with a retaining grid. This retaining grid plate, used to reinforce the PFA liner, acts like rebar in concrete. This rugged construction holds the liner in place and prevents the liner from caving in due to vacuum conditions. The thickness and durability of the injection molded PFA liner provides a flow tube that is capable of handling the most severe applications.

Extended reading: Radar level sensor for solids – Dust solid level measurement

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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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Electronic Flow Meters

Electronic flow meters are industrial digital flow meters for fluid flow rate measurement. In more cases, people will default that Electronic flow meters are electromagnetic flowmeters.

Electronic flow meters types like Magnetic, Vortex, and Ultrasonic flow meters. Electronic flow meters are suitable for Industrial liquid, water, natural gas, petrol, fuel, air, and more fluid flow. Electronic flow meters convert the monitored fluid flow into electronic signals. Including pulse signal, 4-20mA standard signal, etc.

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

Sino-Inst, the manufacturer of Electronic flow meters. We will answer your various questions about Electronic flow meters.

What is electronic flow meter?

A flow meter is a device used to measure the volume or mass of a gas or liquid. Flow meters are referred to by many names, such as flow gauge, flow indicator, liquid meter, flow rate sensor, flow rate meter, etc. depending on the particular industry.

Electronic flow meters are industrial digital flow meters for fluid flow rate measurement. Electronic flowmeters types like Magnetic, Vortex, and Ultrasonic flow meters.

While magnetic, vortex, and ultrasonic–are neither exclusively nor exhaustively electronic in nature. They do represent a logical grouping of flow measurement technologies.

All electronic flow meters have no moving parts, are non-intrusive, and are made by electronics technology.

Magnetic flowmeters are the most directly electrical in nature, deriving their first principles of operation from Faraday’s law. Vortex meters depend on piezoelectric sensors to detect vortices shed from a stationary shedder bar. And today’s ultrasonic flowmeters owe their successful application to sophisticated digital signal processing.

Read more about: What is a Flow Meter? Types and how does it work?

Featured Electronic Flow Meters

Electronic flow meter working principle

Simply put, the working principle of Electronic Flow Meters is to convert the flow rate of the measured fluid into an electronic signal through the flow sensor component. And can carry out flow rate display and signal output. For example, display instantaneous flow rate, cumulative flow, etc.

As you can see. There are many types of Electronic Flow Meters. Therefore, their accurate measurement principles are different.

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.

Let see the video about:

How to Measure Flow with Magnets – (Magnetic Flow Meters)

Video source:

Faraday’s Law

The operation of a magnetic flow meter or mag meter is based upon Faraday’s Law, which states that the voltage is induced across any conductor. As it moves at right angles through a magnetic field, is proportional to the velocity of that conductor.

Faraday’s Formula

E =V x B x D

E = The voltage generated in a conductor

V = The velocity of the conductor

B = The magnetic field strength

D = The length of the conductor

To apply this principle to flow measurement with a magnetic flow meter, it is necessary first to state that the fluid being measured, must be electrically conductive for the Faraday principle to apply.

As applied to the design of magnetic flow meters, Faraday’s Law indicates that signal voltage (E), is dependent on the average liquid velocity (V) the magnetic field strength (B). And the length of the conductor (D) (which in this instance is the distance between the electrodes).

In the case of wafer-style magnetic flow meters, a magnetic field is established throughout the entire cross-section of the flow tube.

If this magnetic field is considered as the measuring element of the magnetic flow meter, it can be seen that the measuring element is exposed to the hydraulic conditions, throughout the entire cross-section of the flow meter.

With insertion-style flow meters, the magnetic field radiates outward from the inserted probe.

Extended reading: Industrial Magmeters

Advantages of using Electromagnetic Flow Meters.

  • High precision and stability
  • Self-check
  • Two-way measurement
  • No pressure loss
  • No moving parts
  • May be for sanitary purposes
  • Large size available
  • Dirty liquid and mixed fructose are ok

Disadvantages of using Magnetic Flow Meters

  • Can not be used to measure gas, steam and liquids containing a lot of gas;
  • Cannot be used to measure liquid media with very low conductivity. The electromagnetic flowmeter cannot measure petroleum products or organic solvents and other media;
  • Cannot be used to measure high temperature media. At present, it is restricted by the lining material and electrical insulation material of the measuring tube of the electromagnetic flowmeter for general industry;
  • The electromagnetic flowmeter is easily affected by external electromagnetic interference.

Extended Reading: Petroleum Flow Meter

A vortex flow meter is a flow measurement device best suited for flow measurements, where the introduction of moving parts presents problems.

They are available in industrial grade, brass, or all-plastic construction. Sensitivity to variations in the process conditions is low, and no moving parts have relatively low wear compared to other types of flow meters.

Vortex flowmeters operate under the vortex shedding principle, where oscillating vortexes occur when a fluid such as water flow past a bluff (as opposed to a streamlined) body.

The frequency that the vortexes are shed depends on the size and shape of the body. It is ideal for applications where low maintenance costs are important.

Industrial size vortex meters are custom built and require appropriate sizing for specific applications.

The Vortex Shedding flow meter detects the vortices, that are created by a process medium going past a bluff body.

The frequency of these vortices can be equated to flow velocity, which, in turn, is used to calculate the volumetric flow rate.

The integral temperature sensor is used in saturated steam service, to determine the operating conditions and specific volume of the steam being measured.

The steam table incorporated into the electronics then calculates the flow of energy of the stream flowing through the meter.

The optional pressure sensor can be used for similar calculations, for gasses and superheated steam. Intelligent Signal Processing (ISP) provides stable readings, free of external influences.

Why Generally Choose 4-20ma Output?

Ultrasonic flowmeters use sound waves to determine the velocity of a fluid flowing in a pipe.

At no flow conditions, the frequencies of an ultrasonic wave transmitted into a pipe, and its reflections from the fluid are the same.

Under flowing conditions, the frequency of the reflected wave is different, due to the Doppler effect.

When the fluid moves faster, the frequency shift increases linearly. The transmitter processes signals from the transmitted wave, and its reflections to determine the flow rate.

Generally, an ultrasonic flow meter is a device, that uses ultrasound to measure the velocity of liquid flow. That helps in determining the volume of liquid flow also.

The ultrasonic flow meters are made using ultrasonic transducers, which are clamped to the external surface of a pipe, to generate the ultrasonic pulses through the pipe.

When the liquid flows inside the pipe, it creates the time difference in the pulses, and these are examined to calculate the accurate flow velocity of the liquid.

There are many advantages of using the ULTRASONIC flow meters which include:

  • The electronics in the ultrasonic flow meter includes ultrasonic flowmeter detector which compensates and adapts to the changes in the profile of the flow, type of the liquid and material of the pipe.
  • A portable ultrasonic flow meter converter can be used as a direct method to determine the flow rates effectively when compared to the other flow systems.
  • Ultrasonic flow meter converter is inexpensive to use and maintain when compared to the other mechanical flow meters as they are no moving parts in these flow meters.
  • Their design is highly sophisticated and they do not obstruct the liquid flow, so they can be used for sanitary, corrosive and abrasive liquids.

These are the advantages of the ultrasonic flow meters and there are many disadvantages of the Ultrasonic flow meter which include:

  • The main disadvantage of the ultrasonic flow meter is the cost. The cost of the flow meter is very high when compared to the other types of mechanical flow meters.
  • The ultrasonic flow meters are sophisticated when compared to the mechanical flow meters, so it needs experts to repair and maintain the flow meters.

These are the advantages and disadvantages of ultrasonic flow meters.

Fuel flow meters, also known as turbine flow meters, are the main types of speed flow meters. A freely rotatable impeller is installed in the fluid-flowing pipe. When the fluid passes, its motion can make the impeller rotate. The larger the fluid flow rate, the larger the kinetic energy, and the higher the impeller speed.

The fluid flow can be determined by measuring the number of revolutions or the number of revolutions of the impeller.

Extended Reading: Fuel Flow Meters for Diesel-Marine fuel-Industrial oil

Perhaps you are not clear about the principle of Electronic Flow Meters. Don’t want to know more about it. Just want to find the applicable Electronic Flow Meters. Then you can start from your measuring medium.

Electronic flow meter for water

A Digital Water flow meter is a flow meter that can display the water flow rate, and have the output for the flow rate. Like 4-20mA output, HART, RS 485, and so on. Digital Water Flow Meter is also called Electronic Water Flow Meter. Digital Water Flow Meter is widely used in industrial water and household water measurement. Most of the Sino-Inst flow meters are digital water flow meters. Like the electromagnetic flowmeter, Portable ultrasonic flow meter, Turbine flow meter…..

Read more Digital Water Flow Meters

Electronic flow meter for air

Digital gas flow meters are flow meters used to monitor the gas flow rate or mass. Digital gas flow meters are designed to measure different types of gases. Like Air, N2, O2, CO2, and more.

Digital gas flow meters can measure the flow of a wide variety of gases. According to measurement principles, there can be positive displacement gas flow meters, velocity gas flow meters, and mass gas flow meters. How to choose the right Digital gas flow meters? We will discuss in detail next.

Read more Digital gas flow meters for Sale

Electronic flow meter for oil

Industrial oil flow meters measure the volume or mass of oil. Can realize the mutual conversion of volume and mass.

The main industrial oils are hydraulic oil. Gear Oil. Turbine oil. Compressor oil. Refrigeration oil. Transformer oil. Cylinder oil, heat treatment oil, heat transfer oil, etc. Of course, edible oil can also be produced in the industry. In addition, there are greases with lubricating oil as base oil and thickening agent.

Therefore, whether it is a company that uses, trades, or produces oil, it needs to accurately measure the oil flow.

There are many common oil flow meters, such as turbine flow meters, positive displacement flow meters, gear flow meters, mass flow meters, etc.

Then, we need to choose a suitable flow meter that meets the measurement and budget according to different working conditions.

Read more Industrial Oil Flow Meters

What are the different types of flow meters?

Flowmeter types: Generally speaking, we will classify flow meters according to their working principles.

Flow Metering Principals

  • Differential Pressure Flowmeters
  • Velocity Flowmeters
  • Positive Displacement Flowmeters
  • Mass Flowmeters
  • For Open Channel Flowmeters – weirs, flumes, submerged orifices, current meters, acoustic flow meters and more

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

  • Differential Pressure Flow Meters
  • Orifice Plate
  • Venturi Tube
  • Flow Nozzles
  • The Sonic Nozzle – Critical (Choked) Flow Nozzle
  • Calorimetric Flowmeter
  • Ultrasonic Doppler Flowmeter
  • Positive Displacement Flowmeter
  • Variable Area Flowmeter or Rotameter
  • Velocity Flowmeters
  • Pitot Tubes
  • Electromagnetic Flowmeter
  • Turbine Flowmeter
  • Vortex Flow Meter
  • Thermal Flowmeter
  • Coriolis Flowmeter
  • Mass Flowmeters
  • Open Channel Flowmeters

Extended reading: Gas Rotameter Tips

How to choose your flowmeters?

Important factors when selecting flow metering devices are:

  • Measured medium
  • Accuracy
  • Cost
  • Flow rate range
  • Pperating requirements
  • Maintenance
  • Lifetime
  • Lead time

These factors are more or less related to each other. For example – the cost of flow meters increases with accuracy and lifetime quality. Read more about: What Is GPM In Flow Meter?

More about Electronic Flow Measurement Technology

Sino-Inst offers over 50 Electronic flow meters 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 meters.

A wide variety of Electronic flow meters options are available to you, such as free samples, paid samples. Sino-Inst is a globally recognized supplier and manufacturer of flow measurement instrumentation, located in China.

Request a Quote

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Compressed Air Flow Meter

Compressed Air Flow Meter, is the digital flow meter work for the air compressor. Air consumption is an important info for industrial inline gas flow pipe. According to the measurement conditions, compressed air flow meter could be 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.


Featured Compressed Air Flow Meter

Thermal mass flowmeters


Gas Turbine Flow Meters


Industrial Vortex Flow Meter

Compressed air flow meter working principle

There are a variety of measurement principles can be used to measure compresses gas.

Turbine gas meters are robust meters, used to measure gas consumption. In gas distribution, transmission, industrial plants and for commercial users. The meter tracks the flow rate continuously, offers little resistance to flow, and has a unique cartridge design that allows removal of all internal parts as one assembly.The meter also exhibits little sensitivity to gas density above two atmospheres pressure.The low inertia of the rotor and vee bearings, allows overhanging of the meter to twice its rated capacity, without damage for intermittent flow variations.  Orifice plates and venturi tubes rely on detecting the differential pressure across a restriction in the pipe,and this pressure is directly proportional to the media velocity. Given knowledge of the pipe dimensions and media characteristics,a differential pressure instrument can give a reading directly in flow units. The accuracy of these systems are reliant on very fine tolerance machining of the orifice or venturi and the pressure drop incurred,through the installation of these devices may not suit all situations. These can be highly accurate and reliable but are expensive and complicated to install and maintain. Pitot tube systems work on a very similar principle and remove the issue of the pipe restriction,as there is only a small diameter tube inserted at right angles to the flow. These can be inserted through ball valves, making removal for service or calibration very simple. This method does not need perfectly dry and pure gases to be accurate,and is very tolerant of wet gases and contaminants which makes it ideal for measuring in difficult places. Such as compressor outlets. Vortex meters place a bluff restriction in the pipe,that causes vortices to form alternately on the 2 rear edges. Sensors are used to detect the formation of these vortices, the frequency of which is directly proportional to the flow rate. These instruments are accurate but again introduce a large restriction into the pipe,and are often employed on steam applications. 

Extended Reading: Digital air flow meters

What about Thermal Mass?

Thermal mass meters and calorimetric flow sensors sense the cooling effect on a heated element,which is directly proportional to the mass flow rate rather than the volumetric flow rate. This removes the subsequent calculations needed to determine mass flow rate,using other methods of flow measurement, and there is no pressure or temperature compensation necessary.The actual sensing tips are small and thus the restriction placed,in the pipe produces very little back pressure, making this method ideal for very low and very high flow rates.Thermal mass meters are available in a range of accuracies and are ideal for dry, clean gas flow measurement. Some designs have all stainless steel wetted parts making them better suited to contaminated or corrosive gases,which would damage the exposed sensing elements of unprotected designs. They are not suitable for wet gases or steam. For those applications a pitot tube design or possibly a vortex meter would be the better choice. Thermal mass is also an excellent principle for use in flow switches,as there are no moving parts in the media and the sensor produces very little back pressure due to its minimal size. These flow switches are very sensitive and some models can be used to determine flow direction as well as flow/no flow.

Know More about Flow Meters

Gas mass flow meter

Gas mass flow meter, are the thermal mass flow meter, which is best choice for gas flow rate measurement. Based on the principle of thermal diffusion, Gas mass flow meter measure the flow rate of gas. Like: air flow, nitrogen, natural gas flow rate.

Digital water flow meters

Digital Water flow meter, means flow meter that can display water flow rate, and have the output for the flow rate. Like 4-20mA output, HART, RS 485, and so on. 

Nitrogen flow meter

Nitrogen Flow Meter, is the flow meter that can measure the flow rate of nitrogen gas. Sino-Instrument is the nitrogen flow meter supplier in China. Vortex flow meter, is the common choice for gas flow rate inline measurement instrument. Like the air, nitrogen gas, steam, oxygen…..

Sino-Instrument is a well-known Exporter, Supplier,

Trader and Service Provider of Flow Measurement Instrument,


Our presented products are used in commercial places for various purposes.

These products are extremely admired in the market due to their reliable performance,

compact design, sturdy nature, easy to fit, longer operational life,

low maintenance, and low prices.


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In line Flow Meters

What is an inline flow meter?

In line flow meter is a flow meter with the function of displaying flow rate on-site. The sensor of the flow meter is installed on the fluid pipe. Digital display or pointer shows the flow rate on the spot.

In-line flowmeters could be digital and mechanical flow meters. Common in-line flowmeters include turbine flowmeters, electromagnetic flowmeters, and ultrasonic flowmeters. With stainless steel material, analog, and 4-20mA output, in-line flow meters can measure and control inline flow.

Features of In-line Flow Meters

  • Local LCD display flow rate.
  • Signal output: analog, 4-20mA, pulse, and so on.
  • Liquid, Gas pipe flow measurement.
  • Special materials can be selected depending on the working conditions.
    Such as PTFE
  • Remote type is available.

You may like: Digital Flow Meters Guide| Liquid and Gas

After understanding what an Inline flow meter is, you may want to know which flow meter is the most suitable?

Choose the most suitable Inline flow meter

Different measurement situations require different inline flowmeters.

Simply put, we can consider the following aspects:

  • Installation form
  • Fluid medium
  • Measuring principle
  • Application

In line flow meter

In line flow meter is currently the mainstream measuring instrument in flow measurement.

In line flow meter is an in-situ display flow meter, also called integrated flow meter. The display head and sensor are integrated.

At present, all integrated flow meters belong to the In line flow meter. They all have in-situ display function. For example, the split-type flow meter does not have the in-situ display function, and its meter and sensor are connected by conduction.

What are the advantages of in line flow meter in the flow measurement process?

In some measurements with a control system, the advantage of In line flow meter is not great. Because the flow can be monitored through the PLC system.

In working conditions without a PLC system, In line flow meter can show its advantages. It can display cumulative flow and instantaneous flow online.

Remote flowmeter

Remote flowmeter is also called split flowmeter. Compared with the online flowmeter, the remote flowmeter means that the sensor and the display are installed separately.

For example, the flow sensor is installed in the underground water pipe, but for the convenience of viewing the data, the display is installed on the ground. The sensor and the display can be connected via a signal cable.

Extended reading: Totalizing flow meter water

Insertion flow meter

What is an insertion flow meter? An insertion flow meter is a flow meter installed in insertion mode. Make a small hole in the pipe under test, and then insert the probe part of the flowmeter into the pipe. easy installation. It is suitable for measuring the flow of large-diameter pipelines.

The insertion flow meter that has been promoted and used has various forms. According to the working principle of the insertion flow meter detection head, it can be divided into insertion turbine, insertion vortex, insertion electromagnetic, uniform velocity tube and thermal flow meter, etc.

Extended reading: Ultrasonic Insertion Flow Meter for Lined/Large Pipes

Clamp-on flow meter

Clamp-on flow meter only needs to paste the external clamp sensor on the surface of the pipe to complete the flow measurement of various liquids.

Currently, the Clamp-on flow meter is only an ultrasonic flow sensor. It does not need to cut off the pipe and flow, the installation is convenient and quick, and it truly realizes the lossless installation.

Extended Reading: Inline Ultrasonic Flow Meter

Inline water flow meter

Commonly used inline flow meters to measure water flow include electromagnetic, ultrasonic, turbine, etc.

Digital water flow meters|Water flow meter types

In line fuel flow meter

What is a fuel flow meter? The fuel flow meter is an instrument that can monitor fuel flow. Industrial Fuel is an important energy source. For example, diesel, marine fuel, gasoline, etc.

Inline oil flow meter

Sino-Inst offers Turbine, Mass flow, Oval gear, V-cone, Target, and Orifice flow meters for inline hydraulic oil flow. Features like: bidirectional, high pressure, analog, can be customized as customer need.

Inline gas flow meter

Digital gas flow meters are flow meters used to monitor the gas flow rate or mass. Digital gas flow meters are designed to measure different types of gases. Like Air, N2, O2, CO2, and more.

In line flow meter for compressed air

The compressed air flow meter is an upgraded and improved gas vortex flow meter. The Karman vortex airflow sensor is researched and produced according to the Karman vortex principle.

In line Magnetic Flow Meters

Sino-Inst is one of the reliable Magnetic flow meter manufacturers and suppliers in China. Magnetic flow meters apply for wastewater flow rate measurement.

Sino-Inst can offer stainless steel magnetic flow meters, both the Pipeline and plug-in style. Of course, Sino-Inst can offer you with the mass flow meters and other flow meters. Read More 

In line Ultrasonic Flow Meters

Ultrasonic flow meters, using the ultrasonic principle, measure the velocity of flow. We can use a different type of ultrasonic flow meters, like Portable ultrasonic flow meter, Handheld ultrasonic flow meter, Clamp-on Ultrasonic Gas Flow Meter. For airflow, natural gas, Read More

Extended reading: Flow Measurement of Nitrogen

In line Turbine Flow Meters

Turbine flow meters are flow sensors work for the inline liquids. Turbine flow meters are cost-effective and offer reliable, measurement with minimal flow meter maintenance required. Turbine flow meters measure the velocity of liquids, gases, and vapors in pipes, such Read More

Inline flow meters are mainly used for industrial pipeline fluid measurement. It can also be used for residential water pipes.

Residential inline water flow meter

Ultrasonic water meter is a new small residential water meter. Residential ultrasonic water meters are equipped with line water meters, and wireless water meters can be customized.

T3-1-2-H residential ultrasonic water meter adopts ultrasonic time difference measurement technology. A highly integrated, developed according to ISO4064-1:2005, GB/T778.1-2007, and other standards. A new generation of fully digital water meters with the advantages of high turndown ratio, ultra-low starting flow, and rich communication methods. IP68 protection level.

Industrial Inline flow meters have a wide range of applications. Need to select the appropriate type according to the measurement medium.

For example, in the food industry, hygienic electromagnetic flowmeters can be used to measure beer and milk. Or sanitary turbine flowmeter.

In the wastewater treatment industry, for example, electromagnetic flowmeters can be used to measure corrosive wastewater.

Read More about: Hot Water Flow Meters

Extended reading:
What is the K-factor in a flow meter?
Cryogenic Flow Meters|Liquid Nitrogen-Liquid Oxygen-LNG fluids

Inline Flow Meters can also be used with paperless recorders.

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Hydraulic Oil Flow Meters

Sino-Inst offers a variety of hydraulic oil flow Meters for flow measurement. If you have any questions, please contact our…


If you let me answer this question. I would like to divide flow meters into two categories: mass flow meters and volumetric flow meters.

Of course, it can also be divided according to the measurement medium. There are two types of flow meters for measuring gas and measuring liquid.

Perhaps, we can also divide into closed pipeline measurement and open channel measurement according to the situation of the pipeline.

Finally, we may also be able to divide into contact and non-contact measurements according to the contact situation of the medium.

If you want to divide the flow meter into three categories. I think it can be divided into volumetric flowmeters, mass flowmeters, and velocity flowmeters.

Extended Reading: Petroleum Flow Meter

There are differences in the allowable error of the measurement accuracy of the commonly used flowmeters, as follows.

  • Mass flow meter 0.05%;
  • Positive displacement flowmeter 0.25~0.5;
  • Electromagnetic flowmeter 0.25~1.0;
  • Turbine flowmeter 0.15~0.5;
  • Vortex flowmeter 0.15;
  • Ultrasonic flowmeter 0.10 (multi-channel is better than 0.5);
  • Orifice plate, micro cone, uniform velocity tube flowmeter 1 to 1.5, nozzle 0.10.

Relatively speaking, mass flow meters have the highest accuracy.

Both the accuracy and error of a flowmeter characterize the ability of a measuring instrument to approximate the actual true value of the measurement results. The higher the accuracy of the instrument, the closer the measured value is to the actual true value. The higher the accuracy, the smaller the error.

Many people feel that the flow meter (flow meter) is the same as the water meter to measure water, but it has the essence but different. However, a water meter is a type of flow meter (flow meter). Let’s talk about the difference between the two of them.

The flow meter (flow meter) can measure the instantaneous flow, and can understand the usage of each site. The water meter mainly has the accumulation function, and the instantaneous flow Q cannot be seen.

A water meter is also a type of flowmeter. It is a volumetric measurement with an accumulation function. The household water meter is a small flow measurement flow meter. It is not resistant to high pressure and high temperature, and cannot output linear signals. Unable to participate in the automation control of modern industry. Basically only metering water, certainly not for metering gas. Some liquid media also cannot be applied.

To put it simply, water meters are generally only used to measure water and have a wide range. Flow meters can measure liquids, gases, vapors, or two-phase.

The installation positions of different flowmeters have different requirements for straight pipe sections.

Liquid flow meters are generally better installed at low places. Because this can make the part of the liquid passing through the flow meter reach the state of full pipe.

Gas flow meters are generally installed high in the pipeline.

And almost all flow meters require a certain length of straight pipe. Different flow meters require different straight pipe lengths.

If there is anything you want to know, please contact us.

The general measurement is to use an electromagnetic flowmeter.

Magnetic flowmeters use the principle of Faraday’s Law of Electromagnetic Induction to measure the flow rate of liquid in a pipe. In the magnetic flowmeter pipe parts, a magnetic field is generated and channeled into the liquid flowing through the pipe.

As fluid flows through the magnetic field, conductive particles in the fluid create changes. This variation is used to measure and calculate the velocity of water flow through the pipe. When the fluid moves faster, more voltage is generated. The electronic transmitter processes the voltage signal to determine the liquid flow.

Read more about Digital Water Flow Meters

At present, the flowmeter products used for natural gas flow measurement roughly include: gas waist wheel flowmeter, gas turbine flowmeter, precession vortex flowmeter, thermal mass flowmeter, vortex flowmeter, ultrasonic flowmeter and orifice flowmeter Wait. Let’s make a simple comparison on the use of these flow meters.

Read more about: Natural Gas Flow Meter Types

Extended reading: Cryogenic Flow Meters | Liquid Nitrogen-Liquid Oxygen

Sino-Inst offers broad flow control and measurement portfolios in the industry. Sino-Instrument provides technology to measure and control whatever moves through a pipe or pipeline. Including water, air, steam, oil, other liquids and gases.

Customers can rely on Sino-Inst for application specific solutions, that deliver accurate, timely and dependable flow data and control essential,for product quality, cost control, safer operations, and regulatory compliance.

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Gas Mass Flow Meter

Gas mass flow meters are very important in some important industrial fields. This kind of equipment installed in pipelines can detect gas. The gas mass flowmeter manufacturer introduced the task of monitoring the flow rate in the pipeline system.

Featured Gas mass flow meters

Gas mass flow meter types

It uses mechanical equipment measuring components to continuously divide the fluid into separate known parts of the volume. The total flow of the fluid volume is measured according to the frequency of repeatedly filling and draining part of the volume of the fluid in the measuring chamber.

Read more about Mass Flow Rate vs Volumetric Flow Rate

It is a kind of variable total area flowmeter. In a vertical tapered tube that expands from bottom to top. The force of the floating ball with the annular cross-section is borne by the hydrodynamic force. In turn, the floating ball can be freely moved in the tapered tube. Raise and lower.

Extended reading: Gas Rotameter Tips

It is an instrument that measures the total flow based on the gas pressure caused by the flow detection device installed in the pipeline, the known fluid standard and the specifications of the inspection room and the pipeline.

A non-streamlined vortex generator is placed in the fluid. The fluid is alternately separated on both sides of the generator to release two series of standard overlapping vortex meters.

Extended reading: 5 matters to pay attention to when choosing threaded Vortex Nitrogen Gas Flow Meter

It is a key type of rate flow meter. It uses a multi-leaf motor rotor (turbocharger) to experience the average water flow of the fluid. Then it calculates the total flow or total output.

A meter that measures the total flow rate based on the efficacy of the fluid fluidity on the ultrasonic beam (or ultrasonic single pulse).

The thermal flowmeter sensor includes 2 sensing technology components. A speed sensor and a temperature sensor. They compensate and calibrate the gas temperature changes fully automatically.

The electric heater part of the instrument heats the speed sensor to a certain time constant higher than the temperature of the working condition. A stable temperature difference is generated between the speed sensor and the sensor that measures the temperature of the working condition.

When the temperature difference does not change, the kinetic energy consumed by the electric heater. It can also be said that the heat dissipation value is proportional to the mass flow rate of the passing gas. It is suitable for the measurement of single gas and a fixed proportion of multiple gases.

The basic principle is to use the Coriolis force caused by the fluidity of the fluid in the vibrating tube. The force can be measured immediately or indirectly to obtain the fluid mass flow.

Extended reading: Liquid Mass Flow Meter

How To Reduce The Effect Of Pressure On The Mass Flow Meter?

Further reading: Industrial LPG/Propane flow meter

Gas mass flow meter Applications

  1. Gas quality flow measurement and operation for heating furnace and cracking furnace;
  2. Petrochemical equipment, oil production plant, torch gas quality flow measurement;
  3. Air index flow measurement and control for combustion furnace; radon mass flow and control for gas turbine generator;
  4. Food industry and beverage gas mass flow and control;
  5. Hydrogen mass flow control in waterworks;
  6. High-purity gas quality flow measurement when manufacturing semiconductor materials;
  7. Quality flow measurement of metal catalysts and organic chemical preservatives;
  8. Pump maintenance and operation, pump tightness, and grease pool leakage inspection;
  9. Central air-conditioning control system;
  10. Mass flow measurement of instrument gas, process gas, N2, etc.
  11. Gas detector, atmospheric sampler
  12. Leak detection
  13. Gas distribution system software
  14. Laboratory gas measurement
  15. Medical applications
  16. Solid-State Battery
  17. Gases used: Air, O2, N2, He, Ar, CO2, H2, CH4, C3H8, N2O, SF6, C3H6, CO, C4H10, and most of the gases.

Extended reading: Food grade flow meters for Food & Beverage industry

Read more about: Coriolis Mass Flowmeter Working Principle

Common gas flow meters include thermal mass flow meters, vortex flow meters, precession vortex flow meters, and gas ultrasonic flow meters. 

Thermal Mass Flow Meter can directly measure the mass flow of various gases. Unaffected by changes in viscosity, density, temperature, or pressure.

A thermal Mass Flow Meter is a true mass flow meter. No temperature and pressure compensation is required. Thermal gas mass flow meters are designed based on the principle of thermal diffusion. Including natural gas, coal gas, liquefied gas, flare gas, argon, carbon dioxide and other mixed gas flow measurement.Previous

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A natural gas flow meter is mainly used for inline measurement of natural gas flow. The natural gas flow meter is mainly used for industrial production and trade settlement.

At present, the flowmeter products used for natural gas flow measurement roughly include: gas waist wheel flowmeter, gas turbine flowmeter, precession vortex flowmeter, thermal mass flowmeter, vortex flowmeter, ultrasonic flowmeter and orifice flowmeter Wait. Let’s make a simple comparison on the use of these flow meters.

Read more.

LPG flow meter is used for flow measurement of liquefied petroleum gas. The flow measurement of LPG is very important in industrial production, transportation and trade settlement.

LPG gas (Liquefied petroleum gas) is a kind of hydrocarbon with propane and butane as its main components. LPG is used for heating, motor fuel, industrial applications and in agriculture. LPG can be in a gas or liquefied state. Different type industrial LPG flow meters with accurate and reliable performance. Such as thermal dispersion flow meter, Coriolis flow meter, gas turbine flow meter, vortex flow meters.

Read more LPG flow meters.

There are many types of Nitrogen gas flow meters. There are three types of flow meters commonly used to measure nitrogen. Precession vortex flowmeter, gas vortex flowmeter, thermal gas mass flowmeter. When selecting a model, it is necessary to select a suitable model and specification according to the parameters and cost that can be provided on-site.

There are 6 types of commonly used nitrogen flow meters:

Vortex flowmeter

Intelligent precession vortex flowmeter

Orifice flowmeter

Gas mass flow meter

Coriolis mass flowmeter

Rotameter flow meter

Of course, which type of nitrogen flowmeter to use. Please make further confirmation according to your actual needs.

Read more Nitrogen Gas-Liquid Nitrogen Flowmeters.

Thermal mass flow meter

What is a Thermal Mass Flow Meter?

A thermal gas mass flow meter is a flow meter that can detect the mass flow of gas without temperature and pressure compensation.

Thermal Mass Flow Meter Unaffected by changes in viscosity, density, temperature, or pressure. Thermal mass flow meters are designed based on the principle of thermal diffusion.

Including natural gas, coal gas, liquefied gas, flare gas, argon, carbon dioxide, and other mixed gas flow measurement.

Read more about: Tips for Thermal Mass Flow Meter|Better Industrial Gas Meter

Gas mass flow meter working principle

The thermal flowmeter is a flowmeter designed based on the principle of thermal diffusion.

That is, when the fluid flows through the heat-generating object, the heat loss of the heat-generating object is proportional to the flow rate of the fluid.

The sensors of the series flowmeter have two standards RTD,

one for the heat source, and one for measuring the temperature of the fluid.

When the fluid flows, the temperature difference between the two is linear with the flow rate,

and then the relationship is controlled by microelectronic control technology.

Converted to a linear output that measures the flow signal.

Read more about:

Gas Mass Flow Controller

The gas mass flow controller is based on the principle of thermal mass flow measurement. With control valve. The Micro Gas Flow Controller (MFC) is used to precisely measure and control the mass flow of gas. Guess you like: Gas … Continue reading

Air mass flow meter VS Controller

Air mass flow meter (abbreviated as MFM) is used for precise measurement of gas mass flow.A gas mass flow controller (abbreviated as MFC) is used for precise measurement and control of gas mass flow. Related products What is a mass … Continue reading

Gas Thermal Mass Flow Meter

You may like: More Featured Industrial Gas Flow Meters FAQ Sino-Inst offer over 10 Thermal Mass Flow Meters, with Best Price. A wide variety of Thermal Mass Flow Meters options are available to you, such as free samples, paid samples. … Continue reading

Advantages of gas mass flowmeters

(1) The gas mass flow meter can be used at normal temperature and pressure or under high pressure. And this product can directly measure the desired data. No pressure compensation is required. No flow compensation is required. This is Unmatched by other products.

(2) It can work normally at room temperature or 100 degrees or even higher temperature. It does not need any temperature compensation. It can be effectively and directly measured.

(3) The gas mass flow meter has a relatively wide range. Generally speaking, it can take into account both small flow and large flow measurement. It is especially suitable for those large-caliber measurements.

(4) The flow resistance of the gas mass flowmeter is basically declining. The ability to resist media corrosion is relatively strong, and the measurement accuracy is relatively high.

(5) When the gas mass meteor meter is actually outputting the signal, it will take into account the situation of each signal, and it can be displayed by remote transmission, which is convenient for cooperating with other meters. It can also be effectively realized after this. Multi-flow records can be automatically accumulated, and data can be easily searched anytime and anywhere.

(6) The gas mass flowmeter is more convenient to install and easy to maintain. It can play a variety of anti-vibration functions.

(7) There are many applications of gas mass flow meters, which can be used in public works. They can be used well in the supervision system of water treatment. They can also be used in oil or natural gas projects, which can be used for energy exchange.


A gas flow meter is an instrument for measuring the flow of gas. Installed in the pipeline to record the amount of gas flowing through.

Can measure gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine, fuel gas, biogas, carbon dioxide, oxygen, compressed air, argon Gas, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia, etc.

Extended reading: Cryogenic Flow Meters | Liquid Nitrogen-Liquid Oxygen

A propane flow meter refers to a flow meter that can measure the volume or mass flow of propane gas. Also often called LPG gas flow meter.

Generally, flanges are used to install propane gas flow meters online. You can refer to more details: New Industrial LPG/Propane flow meter-Precession Vortex

Unit of gas flow: cfm. Square refers to 1 cubic meter of gas. Strictly speaking, square should be a unit of volume, not a unit of flow.

CMM is a commonly used medium-scale flow unit, per minute.

During the unit British period, the filter passes through a certain volume of air flow. We generally use m3/h air volume unit. Foreign countries also use m3/h air volume unit cfm (cubic feet per minute). That is, ft3/min cubic feet/minute.

Commercial conversion is: 1cfm≈1.7m3/h.

Most of our gas flow meters have a local digital display. Can display the instantaneous flow of gas, cumulative flow, etc.

Of course, there is also a pointer display. Then you need to read the flow value according to the dial scale.

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

Sino-Inst offers over 10 Gas mass flow meters, with the Best Price.

All of our flow meters can work with the AMS NEW TREX.

About 13% of these are magnetic flow meters, 14% are Insertion Magnetic Flow Meter, 25% are Venturi flow meters, 13% are Handheld ultrasonic flow meters, and others are Liquid Turbine Flow Meters.

Sino-Instrument is mass flow meter supplier, located in China. Mass flow meter products are most popular in North America, Mid East, and Eastern Europe.

The United States, and India, which export 99%, 1%, and 1% of ultrasonic level transmitters respectively.

You can ensure product safety by selecting from a certified supplier, with ISO9001, ISO14001 certification.

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