Category Archives: Flow Meters

A flow meter (or flow sensor) is an instrument used to measure linear, nonlinear,
mass or volumetric flow rate of a liquid or a gas.
When choosing flow meters,
one should consider such intangible factors as familiarity of plant personnel,
their experience with calibration and maintenance, spare parts availability,
and mean time between failure history, etc., at the particular plant site.
It is also recommended that the cost of the installation be computed,
only after taking these steps
The different sensors include dial, in-line, ultrasonic, orifice plate,
totalizing meters, variable area, venturi, or with switch output.
The different designs of the flow meters have a variety of applications.

What is a Flow Meter and how does it work?

Flowmeter types

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 principle, 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

 

How to choose your flowmeters?

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.

Sino-Instrument offers over 50 flow meter for level 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.
Choose the right Flow Meters for your application:

Industrial Magmeter Flow Meters

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Magmeter flow meter guide covering working principle, selection, specs, installation advantages, and Sino-Inst electromagnetic solutions.

What is a Magmeter Flow Meter?

Magmeter Flow Meters are also called Electromagnetic flow meters or magnetic meters. Magmeter Flow Meter is a type of volumetric flow meter. It is mainly used to measure high-precision flow measurements of various conductive fluids. Such as water-based liquids, mixed media such as mud and sludge can also be measured.

Magmeter Flow Meters are based on Faraday’s Law of Electromagnetic Induction. We Sino-Inst offer a range of full-bore and insertion electromagnetic meters. Covering pipe diameters from DN6 to DN3000. Accuracy can reach 0.5%.

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Choose the Suitable Magmeter Flow Meters

Magnetic Water Flow Meter
Remote Magnetic Sewage Flow Meter
Insertion Magnetic Flow Meter
Magnetic Sanitary Flow Meter
Magnetic Stainless Steel Flow Meter
Magnetic Battery Operated Flow Meter
Magnetic Large Dia. Pipe Flow Meter
Magnetic High Pressure Flow Meter
Magnetic Open Channel Flow Meter

I’ve found that when it comes to reliability and long-term value, the magmeter flow meter is often the best investment for any liquid-based operation. It’s a versatile magnetic flow meter that eliminates the common failure points found in traditional mechanical meters.

Key Advantages of Using a Magmeter Flow Meter

  • Zero Maintenance Headaches: Because there are no moving parts inside the sensor, there’s nothing to wear out, jam, or break. This translates to a massive reduction in downtime and service costs.
  • Obstructionless Design: This is a full bore magmeter. The internal flow path is completely clear, meaning there is no pressure drop. Your pumps don’t have to work harder to push fluid through the meter.
  • High Accuracy Levels: For processes where precision is non-negotiable, these units deliver. Most of our flow meter accuracy specifications hit between ±0.2% and ±0.5% of the flow rate.
  • Immune to Fluid Variables: As a specialized conductive liquid flow sensor, it isn’t affected by changes in temperature, pressure, or viscosity. If your fluid thickness changes mid-process, the reading stays true.
  • Bidirectional Flow: An inline electromagnetic flowmeter can measure flow in both directions. This is a huge plus for complex piping systems where backflow or directional changes occur.
More Flow Meters

First, let us look at the structure of the magmeter.

The structure of electromagnetic flowmeter is mainly composed of magnetic circuit system, measuring catheter, electrode, shell, lining and converter.

The electromagnetic flowmeter is made according to Faraday’s law of electromagnetic induction. It is used to measure the volume flow of conductive liquid.

Faraday’s law of induction (referring to the induction of an electric potential inside the conductor when the conductor passes through a magnetic field) is the basic principle of electromagnetic flowmeter measurement.

This measurement principle can be applied to conductive fluids.

The fluid flows into a pipe whose magnetic field is perpendicular to the direction of the fluid, and the electric potential induced in the fluid can be measured using two symmetrically arranged electrodes.

The signal voltage UE is proportional to the magnetic induction intensity B, the electrode spacing D and the average fluid velocity v.

Because the magnetic induction intensity B and the electrode spacing D are constant. Therefore, the signal voltage UE is proportional to the average flow velocity v.

The equation used to calculate the volume flow rate shows that the signal voltage UE is linearly proportional to the volume flow rate.

The sensed signal voltage is converted into the graduation in the converter, analog and digital output signals.

Our magmeter flow meter solutions are engineered to thrive where other technologies fail. Because they have no moving parts and rely on conductivity, they are the go-to choice for several demanding global industries.

Wastewater Flow Measurement and Management

We primarily deploy these meters in municipal and industrial water systems. Since the inline electromagnetic flowmeter features an unobstructed bore, it handles raw sewage, influent, and effluent without clogging.

  • Leak Detection: High accuracy helps monitor distribution networks.
  • Effluent Monitoring: Ensures compliance with environmental discharge regulations.
  • Chemical Dosing: Precise control for water treatment chemicals.

Handling Corrosive Chemicals and Acids

For chemical processing, we recommend a chemical compatible flowmeter equipped with specialized liners like PTFE or PFA. These materials are immune to the aggressive nature of acids and caustics that would otherwise destroy mechanical meters.

  • Safety: No leak paths through moving seals.
  • Reliability: Maintains flow meter accuracy specifications even in highly volatile environments.
  • Versatility: Works with a wide range of conductive process fluids.

Hygienic Flow for Food and Beverage

In the food and beverage sector, hygiene is everything. Our magmeter flow meter designs meet strict sanitary standards, featuring stainless steel housings and food-grade liners.

  • Clean-in-Place (CIP): Can withstand high-temperature steam and chemical cleaning without removal.
  • Zero Contamination: No internal crevices where bacteria can grow.
  • Applications: Ideal for milk, juice, beer, and liquid chocolate.

Measuring Abrasive Slurries in Mining and Paper Mills

A slurry flow meter needs to be tough. We use heavy-duty rubber or ceramic liners to protect the device from the constant bombardment of solids in mining and pulp applications.

IndustryTypical FluidKey Requirement
MiningOre SlurriesAbrasion Resistance
Pulp & PaperPaper Stock/Black LiquorHigh Solids Handling
ChemicalSulfuric AcidChemical Inertness
WaterPotable WaterLow Pressure Drop

Extended Reading: Guide: Magnetic Flowmeter Installation

Magmeter liner selection should be selected according to the corrosiveness, abrasiveness and temperature of the measured medium.

  • Hard/soft rubber is resistant to general weak acid and alkali corrosion. Temperature resistance is 65℃. Soft rubber has abrasion resistance.
  • Polytetrafluoroethylene (PTFE) is almost resistant to strong acid and alkali corrosion except hot phosphoric acid. The temperature of the medium can reach 130℃. But it is not resistant to wear.
  • Polyurethane rubber has good wear resistance. But it is not resistant to acid and alkali corrosion. Temperature resistance is also poor. The medium temperature is less than 65°C.
Liner MaterialsFunctionsApplications
Hard rubber1. It is resistant to hydrochloric acid, acetic acid, oxalic acid, ammonia, phosphoric acid and 50% sulfuric acid, sodium hydroxide, and potassium hydroxide at room temperature.
2. Avoid strong oxidants. 		1, below 70℃
2. General acid, alkali, and salt solutions. 
Soft rubber1. It has good elasticity and good wear resistance;
2. It is resistant to the corrosion of general low-concentration acids, alkalis, and salt media, and is not resistant to the corrosion of oxidizing media. 		1. Below 70℃;
2. Measure general water, sewage, mud, ore slurry
Polytetrafluoroethylene (PTFE)
Modified polytetrafluoroethylene (PFA)		1. The material with the most stable chemical properties in plastics. It can withstand boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia, as well as strong alkalis and various organic solvents;
2. Poor abrasion resistance and adhesion. 		1.-40℃~+130℃C(PTFE),
-40℃~+160℃(PFA);
2. Strong corrosive media such as acid and alkali;
3. Sanitary media. 
PO1. It can withstand hydrochloric acid, acetic acid, oxalic acid, ammonia, phosphoric acid, sulfuric acid, sodium hydroxide, and potassium hydroxide at room temperature.
2. It can withstand concentrated alkali and various organic solvents. 		1. Below 70℃;
2. General acid, alkali, and salt solutions;
3. General water, sewage, mud, mineral slurry. 
CeramicsWear resistance, high temperature resistance, corrosion resistanceBelow 200℃

Getting your magmeter flow meter installed correctly is the difference between pinpoint accuracy and total frustration. I’ve seen many industrial flow metering setups fail simply because basic layout rules were ignored. To get the best ROI from your full bore magmeter, follow these hard-and-fast rules.

Straight Run Requirements

For a stable flow profile, you need straight pipe sections before and after the meter. Turbulence from valves or elbows will throw off your readings.

  • Upstream: Maintain at least 5x the pipe diameter (5D) of straight pipe before the meter.
  • Downstream: Maintain at least 2x the pipe diameter (2D) of straight pipe after the meter.
  • Pro Tip: If you have a high-disturbance element like a pump nearby, I recommend increasing the upstream run to 10D.

Proper Grounding and Electrode Orientation

Since an electromagnetic flow meter measures tiny microvolt signals, electrical noise is the enemy.

  • Grounding: You must ensure the fluid and the sensor are at the same electrical potential. Use grounding rings if you are installing in plastic or lined pipes.
  • Electrode Alignment: Always install the meter so the electrode axis is horizontal. If electrodes are vertical, air bubbles at the top or sediment at the bottom will break the circuit and cause signal loss.

Ensuring Full Pipe Conditions

A magmeter flow meter cannot measure accurately if the pipe is only half-full. The sensor must be completely submerged in the conductive liquid to function.

Installation ScenarioRecommended Practice
Vertical PipesAlways flow upward. This ensures the pipe stays full and prevents air pockets.
Horizontal PipesAvoid the highest point of the system where air collects.
Downhill RunsInstall a “U-trap” or an orifice plate downstream to create backpressure and keep the meter full.

Avoiding Air Pockets and Sediment

Air bubbles are the most common cause of “jumpy” readings in wastewater flow measurement. I suggest avoiding installations immediately after a pump intake or at the very top of a pipe header. If your application involves slurry flow meter usage, high-velocity flow is your friend to prevent solids from settling on the electrodes.

Magnetic flowmeter is a widely used flow measuring instrument. How should we calibrate it?

Let’s take a look at the calibration method of electromagnetic flowmeter:

  1. Determine the corresponding water pump according to the pipe diameter and flow rate of the verification test;
  2. After the flowmeter is correctly installed and connected, it should be energized and preheated for about 30 minutes in accordance with the requirements of the verification regulations;
  3. If the high-level tank water source is used, check whether the overflow signal of the stabilized water tower appears. Before the formal test, use the verification medium to circulate in the pipeline system for a certain period of time. At the same time, check whether there is any leakage in the sealing parts of the pipeline;
  4. The verification medium should be filled with the electromagnetic flowmeter sensor before the formal verification. Then the downstream valve should be closed to adjust the zero position;
  5. At the beginning of the verification, open the valve at the front of the pipeline and slowly open the valve behind the electromagnetic flowmeter to adjust the flow at the verification point.
  6. During the calibration process, the flow stability of each flow point should be within 1% to 2%-flow method. The total amount law can be within 5%.
    • The temperature change of the verification medium should not exceed 1℃ when the verification process of a flow point is completed. It should not exceed 5℃ when the entire verification process is completed.
    • There must be a sufficiently high pressure downstream of the electromagnetic flowmeter to be checked to ensure that no flashing and cavitation occur in the flow pipeline;
  7. After the test, close the valve at the front end of the test pipeline. Then stop the pump to avoid emptying the voltage stabilization facility. At the same time, the remaining verification medium in the test pipeline must be vented and the control system and the air compressor must be closed.

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

Magnetic flow meter pDF

Electromagnetic flowmeter ManualDownload

Frequently
Asked
Questions

Help Center

A Rotameter flow meter is a variable area flow meter based on float position measurement. It is suitable for liquid and gas volumetric flow measurement and control.

Read more: Rotameter flow meter working principle

All electromagnetic flowmeters need to be calibrated when they leave the factory. Each finished product needs to pass the calibration line inspection before leaving the factory.

It is to install the product on the assembly line. The front end adopts a strictly debugged standard table. A series of coefficients such as the diameter of the flowmeter, the damping coefficient, and the sensor coefficient of the electromagnetic flowmeter are set at the back end. To achieve the same flow rate as the standard meter.

If calibration is done on-site, it may generally be used to calibrate outside the sealed pipeline. Such as portable ultrasonic flowmeter. But the accuracy is generally 0.5. If you just check it, you can use a portable ultrasonic flowmeter.

Read more: Magnetic flow meter calibration

Ultrasonic flow meters and electromagnetic flow meters have different measurement principles.

Electromagnetic flowmeter must measure conductive liquid. The ultrasonic flowmeter can measure pure single-phase liquid. It has nothing to do with the conductivity of the liquid.

The electromagnetic flowmeter must be in contact with the medium to measure. The ultrasonic flowmeter can do contact and non-contact measurement.

The electromagnetic flowmeter is a flow measuring instrument. The measuring principle of the electromagnetic flowmeter is measured according to its principle of conduction. Most of the flow measurement on the market is solved by electromagnetic flowmeters.

The electromagnetic flowmeter is a pure liquid volume measurement instrument.

The mass flow meter is a function of fluid volume and fluid temperature and pressure. Is a dependent variable. The quality of a fluid is a quantity that does not change with time, space temperature, and pressure.

Mass flow meters are compared with electromagnetic flow meters. It can measure non-conductive media. This is one of the biggest differences. In addition, the accuracy of the mass flow meter is higher. The cost is large, and there are fewer applications in the market.

There is a big difference in the performance of general-purpose electromagnetic flowmeters on the market. Some have high precision and many functions. Some have low precision and simple functions.

The basic error of the instrument with high accuracy is (±0.5%～±1%)R.
The instrument with low accuracy is (±1.5%～±2.5%)FS.
The price difference between the two is 1 to 2 times.

Extended reading: Orifice Plate Flow Meter

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Magnetic flow meter manufacturers

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

Sino-Inst offers over 20 Magnetic flow meters at the Best Price. A wide variety of Magmeters options are available to you, such as free samples and paid samples.

About 40% of these are magnetic flow meters, 30% are Insertion Magnetic Flow Meter, and 30% are sanitary flow meters. Magmeters’ products are most popular in North America, the Middle East, and Eastern Europe.

You can ensure product safety by selecting from a certified supplier with ISO9001 and ISO14001 certifications.

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Reliable Turbine Flow Meter Manufacturer

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Leading turbine flow meter manufacturer Sino-Inst offers high-accuracy liquid and gas meters with wide turndown and ISO certified performance.

As a manufacturer, We prioritize mechanical precision because the turbine flow meter principle relies on a simple yet highly effective law of physics: fluid velocity. When liquid or gas passes through the meter body, it impacts the angled rotor blades, causing them to rotate. The angular velocity of the rotor is directly proportional to the flow rate of the medium.

RFQ Turbine Flow Meters

Core Components and Functionality

To ensure long-term reliability in industrial environments, every precision turbine flow sensor we build consists of three critical elements:

  • Rotor and Blades: Lightened for sensitivity but hardened for durability against fluid impact.
  • High-Performance Bearings: Tungsten carbide or ceramic bearings reduce friction and extend service life.
  • Pickup Sensor: A magnetic or modulated sensor detects the passage of each blade, generating a frequency signal.

Liquid vs. Gas Turbine Meter Designs

The design requirements for a liquid turbine flow meter differ significantly from a gas turbine flow meter due to fluid density and compressibility.

FeatureLiquid Turbine MeterGas Turbine Meter
Rotor MaterialHeavy-duty Stainless SteelLightweight Aluminum or Plastic
Bearing TypeLubricated by the process fluidOften self-lubricating or shielded
InertiaHigh; resistant to quick surgesLow; responds to low-density gas flow
Common UseWater, oil, chemicalsNatural gas, compressed air

K-Factor and Signal Processing

The performance of a turbine meter is defined by its K-factor, which represents the number of pulses generated per unit volume (e.g., pulses per gallon). This raw pulse output is the foundation of high-accuracy measurement.

As a manufacturer, we integrate advanced signal processing to convert these pulses into a standard 4-20mA turbine flow transmitter signal or digital outputs like RS485. This ensures the data is ready for your PLC or SCADA system without interference, maintaining accuracy even over long transmission distances.

Specialized Types of Turbine Flow Meters We Manufacture

We produce a wide range of precision turbine flow sensors designed to handle everything from clean water to volatile gases. As a dedicated turbine flow meter manufacturer, we understand that a one-size-fits-all approach doesn’t work for complex industrial environments. We offer several configurations to match your specific fluid properties and pipe requirements.

Liquid Turbine Flow Meter: Our most popular choice for water, fuels, and light chemicals. These meters are the go-to for industrial flow measurement solutions where high repeatability is a must.

Gas Turbine Flow Meter: Specifically engineered to measure natural gas, air, and nitrogen. These units feature specialized rotors to handle gas density and high velocity.

  • Water turbine flowmeter;
  • Diesel turbine flowmeter;
  • 304 SS and 316 SS turbine flowmeters with pulse or 4-20mA output;
  • Plastic material turbine flowmeter;
  • Low flow brass and 316 SS turbine flowmeter
  • Ultra-high pressure turbine flowmeter;
  • High temperature, extremely low temperature turbine flowmeter;
  • Gas turbine flowmeter, etc.
Meter TypePrimary ApplicationKey Feature
Sanitary Turbine Flow MeterFood, Beverage, & Pharma316L Stainless Steel & Tri-clamp fittings
Insertion Turbine Flow MeterLarge Diameter PipesEasy installation without cutting large lines
Cryogenic Turbine Flow MeterLNG & Liquid NitrogenBuilt for extreme sub-zero temperatures
High Pressure Turbine MeterOilfield & HydraulicsHeavy-duty casing for high-PSI environments

Featured Industrial Turbine Flow Meters

Low temperature Turbine Flowmeter-Liquid Nitrogen Flow Meter
Liquid Turbine Flow Meter
Turbine Insertion Flow Meter
Turbine Sanitary flow meter
Turbine Pulse Flow Meter
Gas Turbine Flow Meter

Choosing the Right Turbine Flow Meter for Your Operation

As an experienced turbine flow meter manufacturer, we know that picking the right sensor is about more than just matching pipe sizes. To get the best turbine flow meter accuracy, you need to look at the specific physics of your application.

Critical Selection Factors

To ensure you get precision turbine flow sensors that actually last, we recommend evaluating these four areas:

  • Fluid Type and Viscosity: A liquid turbine flow meter performs differently than a gas turbine flow meter. High-viscosity liquids can create drag on the rotor, so if you’re measuring thick oils, we need to calibrate for those specific conditions.
  • Flow Range Requirements: Check your minimum and maximum flow rates. If you have a trickle flow, a low flow turbine meter is necessary to maintain a linear signal.
  • Media Compatibility: For corrosive chemicals or abrasive slurries, standard stainless steel isn’t enough. We offer specialized alloys and hardened bearings to prevent premature wear.
  • Operating Pressure: High pressure turbine meters are built with thicker walls and specialized flanges to handle extreme industrial environments safely.

Sizing and Installation Pitfalls

One of the biggest mistakes we see is “line sizing”—simply buying a meter that matches the diameter of your existing pipe. If the flow velocity is too low for that pipe size, the rotor won’t spin consistently.

FactorWhat to Watch For
VelocityEnsure the flow falls within the meter’s optimal “sweet spot” (usually the middle 70% of its range).
Straight RunYou must have enough straight pipe upstream and downstream to stop turbulence from hitting the blades.
CavitationIn liquid applications, maintain enough backpressure to prevent bubbles, which can destroy the rotor.

By focusing on these technical details, we help you avoid the common trap of frequent recalibration and ensure your industrial flow measurement solutions provide reliable data for years.

Why Choose Sino-Inst as Your Turbine Flow Meter Manufacturer

We bring decades of engineering expertise to the table, providing industrial flow measurement solutions that meet the rigorous standards of the United States and most countries market. As a direct China flowmeter manufacturer, we combine high-precision manufacturing with the cost-efficiencies your business needs to stay competitive.

Our Advantage

  • Engineering Depth：Decades of experience in turbine flow meter calibration and sensor physics.
  • Custom & OEM：We design precision turbine flow sensors tailored to your specific application requirements.
  • Global Logistics：Streamlined shipping and fast delivery times to North American hubs.
  • Expert Support：Direct technical assistance to help with sizing, installation, and troubleshooting.
  • Full Traceability: Every meter undergoes strict quality control and calibration checks.

We focus on delivering precision turbine flow sensors that work right out of the box. Our facility handles everything from initial design to final testing, ensuring every unit leaving our floor is built for a long service life in harsh environments. By cutting out the middleman, we provide manufacturer-direct pricing while maintaining the high-tier quality required for critical industrial processes.

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2023 New Products! Insertion Type Ultrasonic Flow Meter-Heat Meter–Mono/multi-Channel

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Our new Insertion Type Ultrasonic Flow Meter supports mono, binaural, and even quadraphonic measurements. Meet the pipeline measurement of DN80~DN6000. Compared with the single-channel ultrasonic flowmeter, the two-channel insertion ultrasonic flowmeter is more accurate, has high precision, strong stability, and is easy to install.

RFQ

Technical advantages of Insertion Type Ultrasonic Flow Meter-Heat Meter

  • Single/dual/four-channel host can be selected to achieve multi-channel measurement, and fluid layer measurement is more accurate;
  • Standard output 4-20mA, RS485 signal;
  • 220V and 24V power supply options;
  • PT100, PT1000 can be connected externally; heat measurement can be realized;
  • External pressure sensor can be connected to display pressure parameters;
  • Using a high-speed ARM processor, the response speed reaches 0.1 seconds;
  • Advanced digital signal processing technology, the measurement is not interfered by impurities such as iron filings and welding slag;
  • Different sensors can be connected to solve the problem of multi-bubble application in the field;
  • It is generally used to measure pure single liquids such as tap water, air-conditioning water, and heating water. However, it should be noted that the pipe must be hard and straight, such as PVC, iron pipe, stainless steel, etc.;
  • The protection level of the host is IP67, and the protection level of the sensor reaches IP68;
  • The host and the sensor are installed separately, the host can be installed in the indoor instrument cabinet, and the instrument panel sensor is installed on the measuring pipeline;

Technical parameters: Insertion Type Ultrasonic Flow Meter-Heat Meter

Parameters
Applications
Measurable liquidMost single-phase liquids. Less than 5% particles or bubbles.
Pipe materialStainless steel, carbon steel, PVC, PPR, cement
Ambient temperature-40℃～ +60℃
Measured fluid temperature-20℃～ +150℃
Explosion-ProofFlameproof ExidII BT4
Intrinsically safe ExiaII BT4
Parameters
Velocity rangeNominal precision flow velocity range 0.1～7.0m/s
Measurement accuracy±1.0%
Sensitivity0.01m/s.
Measurement repeatability±0.2%
Host
ProtectionIP65
Power supplyExternal power supply: AC220V/DC18~27V; low power consumption: DC9~36V/built-in backup battery
Electrical InterfaceExternal power supply: waterproof head 7×M20×1.5; low power consumption: waterproof head 4×M20×1.5
LCD display128*64 dot matrix LCD screen
Keyboard input4 keys
Input and output signals
CommunicationRS485, MODBUS RTU protocol.
Flow outputSelf-powered 4-20mA output/OCT

How it works: Insertion Type Ultrasonic Flow Meter-Heat Meter

Introducing our new Insertion Type Ultrasonic Flow Meter-Heat Meter—Mono/Multi-Channel. This advanced device measures both flow and heat. Each channel is accurate, and for multi-channel products, channels support each other, improving accuracy and stability.

The measurement is based on the signal correlation method. Multi-channel products can use multiple channels at once, which greatly reduces the impact of turbulence. This makes the device more adaptable and accurate for different situations, ensuring reliable small flow and heat measurements.

Our product has a fast ARM core processor, with a response time under 0.1 seconds, making it over 10 times faster than regular flow meters. It’s great for measuring high-viscosity oils, chemical products, and ultrapure water flow. Additionally, it can connect to two temperature sensors, so it can be used as a flow or heat meter.

More Insertion Type Flow Meters

Insertion Magnetic Flow Meter
Turbine Insertion Flow Meter
Insertion Vortex Flow Meter
Ultrasonic Insertion Flow Meter
VERIS Verabar Flow Meter
Gas Thermal Mass Flow Meter
Target Flow Meter
 Annubar Flow Meter

FAQ

An insertion type flow meter is a device that measures the flow of liquid or gas in a pipe. It’s installed by inserting a probe or sensor directly into the flow stream, without requiring the pipe to be cut or altered. This makes it easy to install, maintain, and remove, while providing accurate flow measurements for various applications.

The two types of ultrasonic flow meters are Doppler and Transit Time. Doppler flow meters measure the frequency shift of sound waves as they reflect off particles in the flow, while Transit Time flow meters measure the time it takes for sound waves to travel between two sensors, with the flow affecting the travel time.

The main difference between insertion and inline flow meters is how they’re installed. Insertion flow meters are installed by inserting a probe or sensor into the flow stream, while inline flow meters require the pipe to be cut and the meter to be placed directly into the pipeline. Inline flow meters usually offer higher accuracy, but insertion flow meters are easier to install and maintain.

To install an ultrasonic flow meter, first select the proper location on the pipe, ensuring it’s free of bends, valves, or obstructions. Clean the pipe surface, apply coupling gel, and mount the flow meter’s sensors according to the manufacturer’s instructions. Connect the sensors to the flow meter’s electronics, and then configure the device settings, including pipe diameter, material, and other parameters. Finally, test the flow meter to ensure accurate readings.

More Flow Measurement Solutions

Our new product, Insertion Type Ultrasonic Flow Meter-Heat Meter–Mono/multi-Channel, brings new opportunities for measuring large diameter pipes.

Multi-channel Insertion Type Ultrasonic Flow Meter can use multiple channels to work simultaneously. The impact of turbulence randomness on measurement is largely overcome. It greatly improves the adaptability and measurement accuracy of different working conditions, making the measurement of small flow (heat) more guaranteed.

Sino-Inst is a professional Insertion Type Ultrasonic Flow Meters manufacturer. Experience. If you need to measure pipeline flowmeter, please feel free to contact our sales engineers!

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Metal Tube Rotameter

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The Metal Tube Rotameter uses the variable area measurement principle. The intelligent metal tube float flowmeter has a local display type and an intelligent remote transmission type, with the transmitter. Metal Tube Rotameter can be used to measure the flow of liquid, gas, and steam. It is especially suitable for medium flow measurement with a low flow rate and small flow.

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Metal tube rotameter with transmitter

Metal tube rotameter with the transmitter is also called digital rotameter. All-metal structure, there are indicator type, electric remote transmission type, corrosion-resistant type, high voltage type, jacket type, explosion-proof type.

Electric remote transmission, explosion-proof design. Explosion-proof mark Exd Ⅱ CT6. Optional HART protocol function. DC24V power supply, the on-site pointer indicates instantaneous flow. Digital display instantaneous and cumulative flow. Two-wire system 4～20mA output. There are 4 buttons on the panel to view and modify internal parameters.

Metal tube rotameter Features

  • Suitable for flow measurement of small-diameter and low-velocity media;
  • Reliable work. Low maintenance and long life;
  • The requirements for straight pipe sections are not high;
  • Wider flow ratio 10:1;
  • Two-line large LCD display. Optional on-site instantaneous/cumulative flow display. Single-axis sensitive indication with backlight;
  • Non-contact magnetic coupling transmission.
  • All metal structure, metal tube rotor flowmeter is suitable for high temperature, high pressure and strong corrosive media;
  • It can be used in flammable and explosive hazardous situations;
  • Optional two-wire system, battery, AC power supply mode;
  • Multi-parameter calibration function. With data recovery, data backup and power failure protection functions.

Extended Reading: What is difference between rotameter and flow meter

Metal tube rotameter Specifications

PerformanceTechnical parameter
Measurement rangeWater (2.5~150000) L/h; air (0.07~2000) m3/h (at 0.101325 Mpa, 20℃).
level of accuracy1.5 and 2.5 grades (PTFE).
Turndown ratio10:1 or special 5:1
Nominal pressureDN15~50≤4.0MPa; DN65~150 ≤1.6MPa.
Medium temperature-80℃~200℃ (with F46 flowmeter lining 0℃～80℃)
Liquid medium viscosityDN15<5mPa•s; DN25~150≤250mPa•s
Output4-20mA two-wire system
Pure resistive load＜680Ω
Linearity＜0.5%
Temperature effect＜5MA/K
Ambient temperature-25℃~55℃
total heightDN15~DN150 (generally 250mm)

Extended reading: Sludge flow meter for sewage treatment return activated sludge system

The metal tube float flowmeter is mainly composed of two parts: the measuring tube and the indicator. The measuring tube includes a conical tube or orifice, guide, stopper, float, and other components. The indicator includes a magnetic follower system, pointer, dial, circuit, and other components.

The measured medium flows through the measuring tube from bottom to top. The upper and lower ends of the float generate differential pressure to form a rising force. When the rising force of the float is greater than the weight of the float immersed in the flowing fluid, the float rises, and the annular gap area increases. Annular gap When the fluid velocity drops rapidly, the differential pressure at the upper and lower ends of the float decreases. The ascending force acting on the float decreases. Until the ascending force balances with the weight of the float immersed in the fluid, the float stabilizes at a certain position. The height of the float is that Corresponds to the size of the measured medium flow.

The float has built-in magnetic steel. When the float moves up and down with the medium, the magnetic field changes with the movement of the float.

a. For the in-situ type, the follow-up magnet in the in-situ indicator is coupled with the magnet in the float. It rotates and drives the pointer at the same time, and the current flow rate is indicated by the dial.

b. For the smart type, the follower magnetic steel in the smart indicator is coupled with the magnetic steel in the float. It rotates and drives the sensing magnetic steel and pointer at the same time. The magnetic field change is converted into an electrical signal through a magnetic sensor. A/D conversion, digital filtering, temperature compensation. Microprocessor processing, D/A output. LCD liquid crystal displays the instantaneous flow and cumulative flow.

Extended reading: Beginner’s Guide: Variable area flow meter

Rotameter is a common type of flowmeter. The flowmeter is an industrial instrument for measuring the flow of liquids, gases, and other media. There are many types of flow meters. Such as electromagnetic flowmeter, turbine flowmeter, vortex flowmeter, and so on. Different flow meters have different measurement principles. For example, the electromagnetic flowmeter is based on the principle of electromagnetic induction. The rotameter is a device that estimates the flow rate by measuring the (position) of the rotating parts installed in the DC pipeline.

Extended reading: How does a rotameter work

The flow detection element of the float flowmeter is composed of a vertical tapered tube that expands from bottom to top and a float group that moves up and down along the axis of the tapered tube. Below, I will give you a specific introduction to the classification of rotameters.

Glass rotameter:

Glass rotor flowmeters are mainly used in various departments such as the chemical industry, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dyes, environmental protection, and scientific research. Used to measure the flow of single-phase non-pulsating (liquid or gas) fluids. The anti-corrosion glass rotor flowmeter is mainly used for the detection of corrosive liquid and gas medium flow. Such as strong acid, strong acid, oxidant, strong oxidizing acid, organic solvent, and other corrosive gas or liquid medium flow detection.

Extended reading: Gas Rotameter Tips

Plastic tube rotameter:

The main parts such as the liquid plastic tube rotameter cone tube are made of AS, ABS plastic. Has relatively good corrosion resistance. The product also has the characteristics of reasonable structure, small size, lightweight, and the tapered tube is not easily broken. The plastic tube rotor flowmeter can be widely used in chemical, environmental protection, food, and other industrial sectors.

Plexiglass rotameter:

Plexiglass rotameter is divided into panel type plexiglass rotameter and pipeline type plexiglass rotameter.

Plexiglass rotameter also has the characteristics of high transparency, intuitive reading, not easy to break, lightweight, long life, and convenient installation and connection. However, the tapered glass tube of plexiglass cannot be used for organic solvents (such as trichloroethylene, dichloroethane).

Metal tube rotameter:

Metal tube rotameter is divided into on-site pointer indication type and remote transmission type.

Metal float flowmeter is a kind of flow measuring instrument commonly used in industrial automation process control. It has the characteristics of small pressure loss, large detection range (range ratio 10:1), and convenient use. It can be used to measure the flow of liquid, gas, and steam. It is especially suitable for medium flow measurement with low flow velocity and small flow.

Extended reading: Vortex Steam Flow Meter

The metal float flowmeter has a local display type and an intelligent remote transmission type. With pointer display. Instantaneous flow, cumulative flow, liquid crystal display. Upper and lower limit alarm output. Cumulative pulse output, standard two-wire 4-20mA current output, and other forms. Provide users with a very wide choice of space. In addition, the instrument uses a high-quality MCU micro-processing system. Ensure the excellent performance of the flowmeter in various applications.

Extended reading: Beginner’s Guide: Variable area flow meter

Digital Rotameter

Digital rotameters are easier to read than analog rotameters as well as pointer-displayed rotameters.

Digital rotameters is a smart transmitter added to the original rotameters.

The metal shell has a built-in intelligent circuit board. Intrinsically safe explosion-proof structure design, explosion-proof mark iallCT5.

The indicator has both a separate mechanical pointer for instantaneous flow. There are also five liquid crystal digital display instantaneous flow and eight digital display cumulative flow. And equipped with button operation, human-computer interaction interface. It can also output 4-20MA current signal, upper and lower limit alarm and other signals.

Digital rotameters also have a variety of parameter calibration, setting functions, data backup, data recovery and power failure protection. In addition, when it is not a two-wire power supply mode, the LCD backlight display function is also selected.

Related Products:

Gas Thermal Mass Flow Meter
 Annubar Flow Meter
Integral DP Flow Meter
Precession Vortex Gas Flowmeter
Vortex Shedding Flow Meter
Rotameter flow meter-Variable Area Flow Meters

More Flow Measurement Solutions

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

Metal Tube Rotameter price

Sino-Inst offers over 30 Metal Tube Rotameter products. About 50% of these are for liquids. 40% are for gas. At best price.

You can refer to the product price of the following Rotameter flow meter price:

MMetal Tube Rotameter
Pipe size 1/2 inch
Medium: oxygen
FOB Price: USD 281.50/pc

Check more Choosing The Right 1 Inch Flow Meter.

A wide variety of Metal Tube Rotameter options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Rotameter flow meters, located in China.

The top supplying country is China (Mainland), which supply 100% of the Rotameter flow meter respectively.

Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Metal Tube Rotameter products are most popular in Domestic Market, Southeast Asia, and Mid East.

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

Rotameter flow meter-Variable Area Flow Meters

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What is a rotameter flow meter?

A Rotameter flow meter is a variable area flow meter based on float position measurement. It is suitable for liquid and gas volumetric flow measurement and control.

RFQ More Flow meters

The LZ series Rotameter Flowmeter provided by Sino-Inst adopts a 304/316 stainless steel structure. It can be used to measure the flow of liquid, gas, and steam. Especially suitable for low flow velocity and small flow. Flow measurement of high temperature, high pressure, strong corrosion, conductive or non-conductive media.

Rotameter Flow meter Features

LZ series metal Rotameter Flowmeter (also known as metal Variable Area Flow Meters) is divided into two series, LZH and LZ. It has the characteristics of simple structure, reliable operation, wide application range, high precision, and convenient installation.

This series of flowmeters is compared with glass rotor flowmeters. It has the characteristics of high-pressure resistance, high temperature, a strong sense of safety, and concise readings.

It can also be used for flow measurement of opaque and corrosive media. The pipe body and flange of the instrument are made of stainless steel (1Cr18Ni9Ti or OCr18Ni12Ho2Ti).

Extended reading: How does a rotameter work

LZH series: Conventional orifice plates and floats are made of stainless steel. Anticorrosive orifice plate floats and tubes inner linings are made of PTFE.

LZ series: The float and tapered tube are made of stainless steel, and this series is non-corrosive.

The LZH series consists of an instrument tube, a standard orifice plate, a cone float, and a magnetic converter;
The LZ series consists of an instrument tube, a standard float, a tapered tube, and a magnetic converter.

The working parameters of this series of meters and their conversion and correction are provided by the meter calculation software to provide standard calculation methods. The meter’s measurement accuracy is guaranteed.

Extended reading: Stainless steel flow meters|304-316 optional

Rotameter Flow meter Specifications

Type LZH series LZ series
Flow range Water 2.5~100000L/h;
Air 0.07~3000m3/h 		Water 6~100000L/h
Air 0.2~1000m3/h
Turndown ratio DN≤100mm(10:1);
DN＞100mm(5:1) 		DN<80mm(10:1)
DN≥80mm(5:1)
Precision Standard type 2.5 grade,
special order can reach 1.0 grade
Work pressure DN15, DN25, DN40, DN50: 4.0MPa.
DN80, DN100, DN150: 1.6MPa 		DN15,DN25,DN40,DN50:6.4MPa
DN25,DN40,DN50,DN80,DN100:2.5MPa
DN150:1.6MPa
Medium temperature Ordinary type H1:-40℃~100℃
High temperature type H2: -80℃-250℃
Ambient temperature Pointer type: -40℃~65℃
Intelligent type: -25℃~65℃
Connection method Flange connection (flange standard: refer to GB9115-88, JB82-59 (6.4IPa), special specifications are determined according to user requirements)
Explosion-proof grade Intrinsically safe: ExibIICT4 with safety barrier LB987S, explosion-proof certificate number GYB06884
Explosion-proof: ExdIIBT4, explosion-proof certificate number GYB071017
Protection level IP65
Viscosity DN15: ≤5mPa·s, DN25~DN150: ≤250mPa·s
Product performance standards JB/T6844-1993

Rotameter flow meter applications

The metal Rotameter flow meter is suitable for the flow measurement of small-diameter and low-velocity media. It can measure most media such as gas and liquid.

The metal Rotameter flow meter can measure the instantaneous flow and cumulative flow of gases and liquids, including corrosive acid, alkali, and salt solutions. It is especially preferred when the flow is low or when a purely mechanical or inconvenient power supply is required.

Extended reading: Metal Tube Flow Meter Applications

Rotameter flow meters are mostly vertical installation, bottom entry, and top exit type, and can also be installed horizontally. The price is higher. Let me show you a sample.

This is an explosion-proof type for measuring corrosive liquids.

This is a smart type. It can measure gas and liquid. There should be no impurities.

This one is installed horizontally to measure nitrogen. It is purely mechanical to display instantaneous flow rate.

Extended reading: Flow Totalizer F3000X for Data collection and calculation

Read More about: Digital Rotameter

Rotameter flow meter structure

A Rotameter flow meter is a variable area flow meter. It consists of measuring tube, float, indicator, process connection, and so on.

Rotameter flow meter working principle

When the measured fluid passes through the annulus formed by the cone and floats from the bottom to top.

The differential pressure produced at the upper and lower ends of the float forms the force for the float to rise.

When the rise of the float is greater than the weight of the float immersed in the fluid. The float rises.

The annulus area increases accordingly. The fluid velocity in the annulus drops immediately.

The differential pressure at the upper and lower ends of the float is reduced. The lifting force acting on the float also decreases.

Until the rising force equals the weight of the float immersed in the fluid, the float will stabilize at a certain height.

The height of the float in the tapered tube and the flow rate through it correspond to each other.

Extended Reading: What is difference between rotameter and flow meter

Advantages:

  • Cheap price.
  • Observe intuitively.
  • easy installation
  • No external power needed
  • Can Measure Liquid or Gas Flows
  • Better rangeability
  • Low cost and low-pressure drop

Disadvantages:

  • Compared with other flow meters, the accuracy is low.
  • The service life is short.
  • Maintenance is required after using for a period of time!

Read more General-purpose Flow Totalizer for Data collection and calculation

  • Installed vertically on a vibration-free pipe. The fluid flows through the meter from bottom to top.
  • When measuring dirty fluids, a filter should be installed upstream of the meter
  • If the fluid itself is pulsating, a buffer tank can be installed. If the instrument itself oscillates, a damping device can be installed.
  • The gas in the instrument must be drained of the liquid.
  • The control valve in the measurement and control system should be installed downstream of the flowmeter. When used for gas measurement, ensure that the working pressure is not less than 5 times the pressure loss of the flowmeter. In order to make the flowmeter work stably.
  • Before installing the metal rotor flowmeter, the welding slag in the pipeline should be purged. Remove the stop element from the flowmeter when installing. When using after installation, open the control valve slowly. Avoid impact damage to the flowmeter.
  • If the measurement requires a wide range of flow, the range exceeds 10 o’clock. Two floats of different shapes and weights can be placed in one instrument. Take the frivolity reading when the flow is small. After the float reaches the top, take the reading of the heavy float. The range can be expanded to 50-100.
  • Liquid meters are usually calibrated with water, and gas meters are calibrated with air. The fixed value is in the engineering standard state. If the fluid density, gas pressure, and temperature of the use conditions are inconsistent with the calibration. Make necessary conversions.

Extended reading: Gas Rotameter Tips

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

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Gas Thermal Mass Flow Meter
 Annubar Flow Meter
Integral DP Flow Meter
Precession Vortex Gas Flowmeter
Vortex Shedding Flow Meter

Check more 1 Inch Flow Meters.

Rotameter flow meter price

Sino-Inst offers over 30 Rotameter flow meter products. About 50% of these are for liquids. 40% are for gas. At best price.

You can refer to the product price of the following Rotameter flow meter price:

Metal rotor flowmeter
Pipe size 1/2 inch
Medium: oxygen
FOB Price: USD 281.50/pc

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

Extended Reading: Collection of Industrial Insertion Flowmeter Type

Sino-Inst is a globally recognized supplier and manufacturer of Rotameter flow meters, located in China.

The top supplying country is China (Mainland), which supply 100% of the Rotameter flow meter respectively.

Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Rotameter flow meter products are most popular in Domestic Market, Southeast Asia, and Mid East.

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

Liquid mass flow controller

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Liquid mass flow controller can quickly and accurately measure the volume flow/mass flow of the process liquid quickly and accurately.

The liquid quality controller/flow meter is specifically designed for the measurement and control of small flow liquids. It is mainly used for low-viscosity, non-corrosive 304 materials. The internal PID closed-loop system is set to realize automatic flow adjustment.

RFQ

Liquid mass flow controller Features

  • It can quickly and accurately measure the volume flow/mass flow of the process liquid;
  • Use a customized high-speed proportional control valve to accurately control the liquid volume flow/mass flow;
  • With a unique vent hole can easily exhaust air;
  • There are no movable components and thermal components inside. Passed anti-vibration test. Insensitive to installation direction;
  • Using patented internal compensation laminar flow pressure difference technology, the fluid still maintains laminar motion under a large flow range;
  • Integrated multi-function digital display. Allows users to control the set value and PID valve adjustment only through the operation of the screen buttons. Simultaneously open analog input and output and RS-485 digital communication;
  • Digital liquid flow meters/flow controllers are widely used in various industries, such as process manufacturing, food analysis, analytical testing and measurement, etc.

Liquid mass flow controller specifications

Operating temperature+10~+50℃
Working pressure3 MPa/10MPa
Requirements for installation method/direction>1L/min range, the valve must be installed vertically
Valve gradeValve closed
Protection levelIP40
Materialstainless steel
Monochrome LCD displaySimultaneous display of flow and settings
Digital output signalRS-485/PROFIBUS
Analog input signal0-5Vdc/4-20mA
Analog output signal0-5Vdc/4-20mA
Electrical signal interfaceDB15
Supply voltage24-30 Vdc
Supply current0.750Amp
Measuring rangeLow range: 10SCCM~30SLM
Medium range: 30SLM~300SLM
Large range: 500SLM~3000SLM
Accuracy (under standard conditions after zero adjustment)±1%F.S
Repeatability±1%F.S
Zero drift & full scale drift0.02%F.S/C/Atm
Working range/range adjustable ratio2%~100%F.S/50:1
Maximum measurable flow100%F.S (controllable)
Typical response time200 milliseconds (adjustable)
Start-up warm-up time<5 seconds

Liquid mass flow controller applications

Liquid mass flow meters/controllers are widely used in various industries. Such as process manufacturing, food analysis, analytical testing, and measurement, etc.

Multi-variable measurement and 50:1 range adjustable ratio. So that only one liquid flow meter & controller can replace the effect of multiple devices.

The accuracy of 1%, repeatability of 1%, and control response time of fewer than 200 milliseconds ensure the normal operation of the process gas.

Extended reading: U-series Liquid Mass Flow Meter | Liquid-slurry flow measure

Liquid mass flow controller Dimensions

What Is Liquid Mass Flow Controller?

Liquid flow controllers can be used to measure and control the flow rate of various types of liquids.

Liquid flow controllers are typically used in applications that require a constant flow rate and can compensate for changing pressure changes. Because of this feature, liquid flow controllers cost more than liquid flow meters that typically only measure flow. Read more about: The Pros and Cons of Micro Motion Flow Transmitters

Gas mass flow controller for micro gas flow measure &control

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.

  • Product SKU: Gas mass flow controller
  • Product Brand: Sino-Inst
  • Product Currency: USD
  • Product Price: 900
  • Price Valid Until 2099-09-09
  • Product In-Stock: PreOrder

Extended reading: Liquid Mass Flow Meter

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FAQ

Generally speaking, when only measuring or monitoring the flow, use a mass flow meter. When you need to control the flow, use a mass flow controller.

In some measurement occasions, both can be used. For example, when measuring the flow capacity of the capillary tube, when measuring the flow at constant pressure, use a mass flowmeter.
When measuring pressure with constant flow, a mass flow controller is required.

Note that when the mass flow controller is in the cleaning state, it can also be used as a mass flow meter, but the pressure drop is larger than that of an ordinary mass flow meter.

Extended Reading: Liquid Turbine Flow Meter

Mass flow controller, namely Mass Flow Controller (abbreviated as MFC). Not only has the function of a mass flow meter. More importantly, it can automatically control the gas flow. That is, users can set the flow rate according to their needs. MFC automatically keeps the flow constant at the set value. Even if the system pressure fluctuates or the ambient temperature changes, it will not deviate from the set value.

Simply put, the mass flow controller is a steady flow device. It is a gas steady flow device that can be set manually or automatically controlled by connecting with a computer.

Extended reading: Mass Flow Rate Units Converter

Mass flow meter, namely Mass Flow Meter (abbreviated as MFM). It is an instrument for accurately measuring gas flow. The measured value is not inaccurate due to temperature or pressure fluctuations, and does not require temperature and pressure compensation.

Read more.

Read more about: Coriolis Mass Flowmeter Working Principle

The mass flow controller is composed of a flow sensor, a diverter channel, a flow regulating valve and an amplifying controller.

The flow sensor uses the principle of capillary heat transfer thermometry to measure the mass flow of gas (without temperature and pressure compensation). The flow signal measured by the sensor heating bridge is sent to the amplifier to be amplified. The amplified flow detection voltage is compared with the set voltage. Then the difference signal is amplified to control the regulating valve. Closed loop control of the flow through the channel to make it equal The set flow is equal.

The flow divider determines the flow of the main channel. The flow indicator matched with the mass flow controller is equipped with a regulated power supply, a digital voltmeter, setting potentiometer, peripherals, internal conversion and three-position valve control switch, etc.

Extended reading: What is an air pressure transducer?

Related Blogs:

Sino-Inst offer over 5 liqiud Mass Flow controller with Best Price.

A wide variety of liquid Mass Flow controller options are available to you, such as free samples, paid samples.

Sino-Inst is liquid Mass Flow Meters and controller suppliers, located in China. Mass Flow Meters products are most popular in North America, Mid East, and Eastern Europe.

Gas Mass Flow Controller

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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.

RFQ

Features of Gas mass flow controller

  • The standard minimum flow rate of the micro gas mass flowmeter is 2ml/min. Chlorine, air, and compressed air can reach it. Some gases with a low C.F coefficient can be measured even lower
  • The standard accuracy of the gas mass flowmeter is 0.5%. 1.0% reading, 0.5% full scale accuracy, repeatability 0.2%. The accuracy of the controller is 1.0% (full scale)
  • The flowmeter’s turndown ratio is 1:100
  • The valve control range of the controller is 1:50
  • The minimum can measure 2sccm, the maximum can reach 3000slm
  • The base material of the flowmeter and controller is SS316L. The material in contact with the gas is also SS316L. It can measure some weakly corrosive gases.
  • The leak rate of the flow meter and controller is 1×10-SCCSHe.
  • Sealing material is chloro rubber, oxyprene butadiene rubber

Specifications of Gas mass flow controller

MediumSuitable for gas, weakly corrosive gas. For example: nitrogen, air, not suitable for ammonia
Precision+/-1.5%F.S
Linear+/-0.5%F.S
Repeatability+/-0.2%F.S
Response time<2.0S
communicationRS232/485, MODBUS
Output0~5V, 1~5V, 4-20mA
powered by+/-15VDC,24VDC
temperature0~50℃
Work pressurePressure difference: 0.1~0.5Mpa
Maximum withstand voltage3Mpa/10Mpa
Electrical InterfaceDB15 hole
Leak rate1×10·SCCSHe
Temperature Coefficient+/-0.025%F.S/℃C
Base materialSS316L
Seal materialFluorine rubber, neoprene rubber, nitrile rubber
Connector8,010,012

Extended reading: Cryogenic Liquid Nitrogen Flowmeters

Gas mass flow controller working principle

The mass flow meter uses the principle of capillary heat transfer thermometry to measure the mass flow of gas (without temperature and pressure compensation).

The flow signal measured by the sensor heating bridge is sent to the amplifier for amplification. The amplified flow measurement voltage is compared with the set voltage.

Then amplify the difference signal to control the regulating valve. Through closed-loop control to control the flow-through, and make it equal to the set flow. The flow divider determines the flow of the main channel.

The picture shows the working principle diagram of the MFC and the flow indicator connected:

The detected voltage of the flow rate output by the controller is directly proportional to the quality of the gas flowing through the channel. The full-scale detection output voltage is 5VDC. The detection range of the gas mass flow controller is 2~100% full scale (the turndown ratio is 50:1) The flow resolution is 0.1% of full scale.

Note: When the “valve control” line of the gas mass flow controller is set to the “cleaning” position, it can also be used as a gas mass flow meter. At this time, the output value of the flow detection output voltage may reach more than 10VDC.

It should be noted that once the output voltage exceeds 5VDC, the flow detection voltage and the actual flow rate are not linearly corresponding.

When cleaning, the flow rate display is inaccurate. Moreover, the flow rate may increase and the display decrease. But these will not damage the mass flow controller.

Extended reading: Mass Flow Rate vs Volumetric Flow Rate

Guess you like: Gas Mass Flow Meter

Liquid mass flow controller for process liquid -Sino-Inst

The liquid mass flow controller can quickly and accurately measure the volume flow/mass flow of the process liquid quickly and accurately.

  • Product SKU: Liquid mass flow controller
  • Product Brand: Sino-Inst
  • Product Currency: USD
  • Product Price: 900
  • Price Valid Until 2099-09-09
  • Product In-Stock: PreOrder

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Mass Flow & Density to Volume Flow CalculatorMass Flow Rate Unit ConverterVolume Flow Rate Converter
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 Coriolis Flow Meter

Common types of flow controller MFC

  1. Positive displacement flow meter, also known as fixed displacement flow meter.

It uses mechanical measuring elements to continuously divide the fluid into a single known volume part. The fluid volume flow rate is measured according to the number of times that the measuring chamber is filled and discharged with the volume part of fluid successively.

  1. Float type flowmeter, also known as rotameter.

It is a kind of variable area flowmeter. In a vertical tapered tube that expands from bottom to top. The gravity of a float with a circular cross-section is borne by the hydrodynamic force. So that the float can rise and fall freely in the cone tube.

Read more about: Rotameter flow meter-Variable Area Flow Meters. Suitable for liquid and gas volumetric flow measurement and control.

  1. Differential pressure type flowmeter.

It is based on the differential pressure generated by the flow detector installed in the pipeline. Known fluid conditions and the size of the test room and pipeline to calculate the flow of the meter.

  1. Vortex flowmeter.

A non-streamline vortex generator is placed in the fluid.
The fluid is alternately separated on both sides of the generator to release two series of regularly staggered vortex meters.

Extended reading: Threaded Vortex Nitrogen Gas Flow Meter

  1. Turbine flowmeter.

It is the main type of velocity flow meters. It uses a multi-blade rotor (turbine) to sense the average flow velocity of the fluid. In order to derive the flow or total meter.

  1. Ultrasonic flow meter.

A meter that measures the flow rate by detecting the effect of fluid flow on the ultrasonic beam (or ultrasonic pulse).

  1. Electromagnetic flowmeter.

Electromagnetic flowmeter is an instrument for measuring conductive liquid made according to Faraday’s law of electromagnetic induction. Electromagnetic flowmeter has a series of excellent characteristics. It can solve the problems that other flowmeters are not easy to apply, such as the measurement of dirty flow and corrosive flow.

  1. Thermal flow meter.

The thermal flow meter sensor contains two sensing elements. A speed sensor and a temperature sensor.

They automatically compensate and correct for gas temperature changes.

The electric heating part of the instrument heats the speed sensor to a certain fixed value higher than the temperature of the working condition. A constant temperature difference is formed between the speed sensor and the sensor that measures the temperature of the working condition.

When the temperature difference is kept constant, the energy consumed by electric heating can also be said to be the heat dissipation value. It is proportional to the mass flow rate of the gas flowing through it. It is suitable for the measurement of single gas and fixed ratio multi-component gas.

  1. Coriolis flowmeter.

The principle is to use the Coriolis force generated when the fluid flows in the vibrating tube. The force is measured directly or indirectly to obtain the fluid mass flow rate.

Extended reading: Flow Totalizer F3000X for Data collection and calculation

Frequently
Asked
Questions

Help Center

What we usually call a mass flow controller, its full name is a thermal gas mass flow controller, or MFC for short.

The full name of mass flow meter is thermal gas mass flow meter, referred to as MFM.

They are an instrument that precisely measures gas flow. Its measured value will not be inaccurate due to changes in temperature or pressure.

A mass flow meter is a meter for measurement and monitoring. The mass flow controller not only has the function of mass flow meter. More importantly: it can automatically control the flow of gas. That is to say, the user can set the flow rate according to the needs of the situation. The flow controller automatically keeps the flow constant at the set value. Even if the system pressure fluctuates or the ambient temperature changes, it will not deviate from the original set value.

Simply put, a mass flow controller is a steady flow device. It is an automatic control gas flow stabilization device that can be manually set or connected with a calculator.

In general, if only the gas flow is measured or monitored, a mass flow meter can meet the requirements.

And if it is necessary to control the gas flow, a mass flow controller is required.

In some measurement occasions, both can be used. Such as the measurement of capillary flow capacity, when measuring flow at constant pressure, use a mass flow meter. When measuring constant flow and pressure, a mass flow controller is required.

Note that when the mass flow controller is in the cleaning state, it can also be used as a mass flow meter. It’s just that the pressure drop is larger than that of ordinary mass flow meters.

Read more about: The Pros and Cons of Micro Motion Flow Transmitters

sccm: standard milliliters/minute; slm: standard liters/minute

Standard conditions: temperature – 273.15K (0 ℃) pressure – 101325Pa (760mmHg)

F.S (Full Scale) means full scale

Thermal mass flow controllers/mass flow meters directly measure the mass flow of gases. Density dynamic detection. No compensation is required. Volumetric flow can also be measured directly.

The volume flowmeter can only measure the volume flow directly, if you want to measure the mass flow, if you give a fixed density value during configuration. This makes it impossible to detect density dynamically. Less accurate.

Mass flow controllers/flowmeters measure gases that are not affected by temperature and pressure.

Mass flow controller MFC not only has the function of mass flow meter. What’s more, it can automatically control the gas flow. The flow rate can be set according to actual needs.

The MFC automatically keeps the flow constant at the set value. Even if the system pressure fluctuates or the ambient temperature changes. It will not deviate from the error range of the set value.

Mass flow controllers can be used to control all kinds of gases. Including corrosive gases and special gases.

But pay attention to the use of corrosive gases and special gases. Proper selection of model and seal material is required.

When ordering, the user needs to declare the gas to be used. In order to avoid serious losses due to wrong selection or selection of sealing materials.

Usually, the wet material of the mass flow controller contacting the working gas is 316L stainless steel, polytetrafluoroethylene and sealing materials. Sealing materials are divided into two categories: metal seals and rubber seals. Metal seal materials are generally corrosion-resistant materials such as stainless steel, gold or nickel.

The MFC with metal seal can be used for any gas in principle, including various corrosive gases and special gases.

For strong corrosive gases such as boron tribromide, boron trichloride, and hydrogen fluoride, and metal oxide gases used in MOCVD, it is recommended to use a metal-sealed MFC.

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Sino-Inst is a manufacturer of Gas Mass Flow Controllers for Measurement of Gas. It has an accumulation function, and can operate in timing accumulation or quantitative accumulation mode respectively. After the accumulation amount is reached, the flow controller will stop automatically, which is convenient for various experimental research occasions application.

Sino-Inst Gas Mass Flow Controllers not only have the function of a mass flow meter. More importantly, it can automatically control the gas flow. That is, the user can set the flow according to the needs, and the MFC will automatically keep the flow constant at the set value. Even If the system pressure fluctuates or the ambient temperature changes, it will not deviate from the set value.

The mass flow controller is a steady flow device, which is a gas steady flow device that can be manually set or automatically controlled by connecting with a computer.

The measurement range of Sino-Inst Gas Mass Flow Controllers is wide, from full scale 5ml/min to 1500 liters/min. There are also many gas media that can be measured, suitable for general nitrogen, air, carbon dioxide, hydrogen and other gases. According to the communication method It is different, divided into 0-5V or 4-20mA analog type and RS485modbus digital type. The withstand voltage of the product is divided into 10Mpa, 5Mpa and 3Mpa according to the flow rate.

Sino-Inst’s entire team is well trained, so we can ensure that each customer’s needs are met. If you need any help with your product requirements, whether it is a Gas Mass Flow Controller, level sensors, or other equipment, please give us a call.

Cylinder Gear flow meter

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A Cylinder gear flow meter is a micro digital positive displacement flow meter. Can measure very small flow rates and quantify small volumes of liquid. High and low-temperature resistance (-196℃-200℃).

Cylinder Gear flow meter is a type of positive displacement flow transmitter. It is a high-precision transmitter for measuring volumetric flow. With the flow of the medium, the gears mesh and rotate. Under the action of fluid flow. Measure the number of revolutions of the gear to know the flow of liquid and liquid flowing through the instrument. It is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, grease, and other high-viscosity media. It can measure the viscosity of Fluid up to 10000Pa.s.

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

Request a Quote
Volumetric Flow Meters

Features of Gear flow meter

  • High pressure resistance (1.0-45MPa)
  • High and low temperature resistance (-196℃-200℃)
  • Can measure various viscous media
  • High precision and repeatability
  • Pulse output/analog output optional
  • Wide range ratio (1:100)
  • Wide measuring range
  • Strong anti-corrosion and anti-fouling ability (acid and alkali)

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

Specifications of Gear Flow Meter

Model

Measure Range

L/H

K

P/L

Pressure-Bar

Temperature

Accuracy

Interface

Installation dimensions

Aluminum alloy

stainless steel

GF02

0.6-50

10500

150

400

-15-80℃

+/- 0.5%

( Range 1:10)

+/- 1.0%    （Range 1:100）

G1/8

Φ84*55

GF04

5-250

9117

150

400

-15-80℃

G1/4

Φ84*55

GF06

10-500

3000

150

400

-15-80℃

G1/4

Φ84*67

GF10

50-1200

1280

150

400

-15-80℃

G1/2

Φ84*67

GF15

200-3000

126.75

150

400

-15-80℃

G3/4

Φ116*98*74

GF25

1000-12000

61.1

150

400

-15-80℃

G1-1/2

158*118*68

GF32

2000-20000

59.9

150

400

-15-80℃

G1-1/2

158*18*68

Read more about: Flow Meters With GPM Units

Flow unit options:L/s L/m L/h m3/s m3/m m3/h Nm3/h
USG/s USG/m USG/h Kg/s
Kg/m Kg/h t/s t/m t/h
Default value: m3/h
Define the unit of instantaneous flow:
L (liter), h (hour), t (ton), s (second), m
(minute)
Flow decimalOptions: 0 1 2 3, default value: 1
Define the number of decimal places
for instantaneous flow
RangeFloating point number: 99999999.00-
0.00 m3/h,
Default value: 100.0 m3/h
When the instantaneous flow reaches
the range, the converter outputs 20mA.
Changing this parameter will affect the
current output, high alarm and low
alarm.
Note: When you modify this set value
(range), please pay attention to the unit
of this parameter (range), you can
modify the unit of this parameter
(range) as needed.
Small signal removalFloating point number: 9.90 ~ 0.00%,
default value: 0.0%
The set value is a percentage of the
range
High alarmFloating point number: 99.00 ～ 1.00%,
default value: 90.0%
The setting value is the percentage of
the range, for example: if the value is
set to 10, it is equal to 10% of the range,
if the absolute value of the
instantaneous flow is greater than
(range × 10%), the converter will output
a high alarm signal, high alarm The
contact is closed.
Low alarmFloating point number: 99.00 ～ 0.00% default value: 0.0%
The setting value is the percentage of
the range. For example: if the value is
set to 10, it is equal to 10% of the range.
If the absolute value of the
instantaneous flow is less than (range ×
10%), the converter will output a low
alarm signal and a low alarm The
contact is closed.
Damping timeFloating point number: 30.0 ~ 0.1,
default value: 1
Total unitOptions: L(liter) m³ Nm3 USG Kg t(ton),
Default value: m³
Define total unit
The total number of decimal placesOptions: 0 1 2 3, default value: 1
Define the number of decimal places
for the total
Preset totalOptions: 99999999.00-0.00 m3/h,
default value: 0.0 m3/h
Clear total or set total value

Read more about: Typical Turndown Ratios For Various Flowmeters

Gear flow meter application field

  • Resin and glue measurement
  • Hydraulic oil, lubricating oil, grease measurement
  • Fuel oil measurement
  • Ink, asphalt measurement
  • Liquid nitrogen, freezing liquid, solvent measurement
  • Edible oil, fish oil and food filling measurement
  • Chemical and anti-corrosion requirements fluid measurement
  • Fluid quantitative control system

Read more General-purpose Flow Totalizer for Data collection and calculation

Gear flow meter working principle

Gear flow transmitter is a type of positive displacement flow transmitter. It is a high-precision transmitter for measuring volume flow.

With the flow of the medium, the gears mesh and rotate. Under the action of the fluid flow, a pressure difference is formed at both ends of the instrument inlet and outlet. There is no need for a power supply. A pair of gears rotate freely. The cavity between the gears is filled with liquid. Discharge and measure the number of revolutions of the gear to know the flow of liquid and liquid flowing through the instrument.

Figure 1 Schematic diagram of fluid flow

The rotation speed of the round gear transmitter is detected by the sensor coil in the signal amplifier mounted on the watch case. The signal amplifier is not in contact with the measured medium. When the transmitter gear cuts the magnetic field lines generated by the permanent magnet in the housing, it will cause the magnetic flux in the sensing coil to change.

The sensing coil sends the detected magnetic flux periodic change signal to the preamplifier, amplifies and reshapes the signal, generates a pulse signal proportional to the flow rate, and sends it to the unit conversion and flow integration circuit to obtain and display the cumulative flow value. At the same time, the pulse signal is sent to the frequency current conversion circuit, which converts the pulse signal into an analog current quantity, and then indicates the instantaneous flow value.

The round gear transmitter has high machining accuracy and precise installation. The rotation of the gear is scanned non-contact, and each tooth generates a pulse with a very high resolution. Cylindrical gear transmitters can measure very small flow and quantify the small volume of liquid.

Extended reading: Tri clamp-Stainless steel Sanitary Positive Displacement Flow Meter

Oval Gear Flow Meter

Oval gear flow meters (also known as displacement flow meters, gear flow meters) are a type of positive displacement flow meters, which are the most accurate type of flow meters. It uses a mechanical measuring element to continuously divide the fluid into a single known volume part, and measures the total flow volume according to the number of times that the metering chamber is filled and discharged with the volume part of the fluid successively and repeatedly. The oval gear flowmeter can be made of different materials (cast iron, cast steel, 304 stainless steel, 316 stainless steel), and is suitable for flow measurement in the chemical, petroleum, pharmaceutical, electric power, metallurgy and food industries.

The measurement principle of the gear of the Cylinder Gear flow meter is similar to that of the oval gear flow meter. But the gear shape is different.

Oval Gear Flow Meter Advantages and Disadvantages

The oval gear flowmeter uses the principle of volumetric type. Suitable for testing various viscous liquids. Flow measurement of heavy oil, polyvinyl alcohol, resin and other high-viscosity media.

Advantages:

  1. The measurement accuracy of the oval gear flowmeter is high. The basic error is generally ±0.5%R. Special ones can reach ±0.2% R or higher. It is especially suitable for use in the field where high-precision measurement is required.
  2. It has no influence on the measurement accuracy when measuring the distortion of the flow velocity field of the rotating flow and the pipeline choke. There is no requirement for the front straight pipe section.
  3. The oval gear flowmeter can be used to measure high-viscosity fluids. Wide flow range. It is generally 10:1 to 5:1. Special ones can reach 30:1 or greater.
  4. With direct reading of on-site flow. It can measure the cumulative total without external power supply. The display is clear and the operation is convenient.

The oval gear flowmeter is a combination of measuring elements. The indirect method of volumetric flow measurement. Compared with other flow meters that use velocity to derive flow. Oval gear flow meters have the following disadvantages:

  1. The design of the measurement structure is complicated. Large and bulky. In particular, the flowmeter with a larger caliber is bulky. Compared with other general flow meters (such as orifice flow meters, float flow meters, electromagnetic flow meters, vortex flow meters). The measured medium type, medium working condition (temperature, pressure), and caliber are relatively limited. The scope of adaptation is narrow.
  2. Not suitable for high and low temperature occasions. Because of the thermal expansion and deformation of parts at high temperatures, the material becomes brittle at low temperatures. The usable temperature range is -30～+180℃. The maximum pressure is 10MPa.
  3. The oval gear flowmeter is only suitable for clean single-phase fluids. When the fluid contains particles or dirt, a filter must be installed upstream. Not only increases the pressure loss, but also increases the maintenance work. If measuring liquids containing gas, a gas separator must be installed.
  4. Poor safety performance during measurement. If the measuring element is stuck in motion, the fluid cannot pass through. The cut-off piping system cannot be used.
  5. During the measurement process, the pulsation caused by the flow of fluid during the measurement process. Large-diameter flowmeters can also generate noise. Even the pipes vibrate.

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Featured positive displacement flow meters for sale

Pointer Type Oval Gear Flow Meter
LCD display Oval Gear High Viscosity Flow Meter
High Temperature Oval Gear Flow Meter – Heating oil
Oval Gear-Marine Fuel Flow Meter
Clamp Filling Oval Gear Positive Displacement Flow Meter

Frequently
Asked
Questions

Help Center

Gear flow meters are a type of positive displacement flow meters. It is used for precise continuous or discontinuous measurement of the flow or instantaneous flow of liquid in the pipeline. It is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, resin, and other high viscosity media.

Extended reading: Positive Displacement Flow meter Technology

Oval gear flow meter (also known as displacement flowmeter, gear flowmeter) is a type of positive displacement flowmeter. It is a category with higher accuracy in flow meters. It uses mechanical measuring elements to continuously divide the fluid into individual known volume parts. The total flow volume is measured according to the number of times that the metering chamber is filled and discharged with this volume of fluid successively and repeatedly.
The oval gear flowmeter can be made of different materials (cast iron, cast steel, 304 stainless steel, 316 stainless steel), and is suitable for flow measurement in the chemical, petroleum, pharmaceutical, electric power, metallurgy, and food industries.
Extended reading: Stainless steel flow meters|304-316 optional

You may like:

Sino-Inst, Manufacturer for Gear flow meter for Microflow. For example crude oil flow meter, diesel flow meter, gasoline flow meter.

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

Ultrasonic Water Meter for Residential Water

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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 meter with the advantages of high turndown ratio, ultra-low starting flow, and rich communication methods. IP68 protection level.

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

Request a Quote
Ultrasonic Flow Meters

Features of Ultrasonic water meter T3-1-2-H

T3-1-2-H ultrasonic water meter has wired type as standard configuration, wireless type need to be customized.

Specifications of Ultrasonic water meter T3-1-2-H

PerformanceParameters
Working Pressure2.5MPa
TemperatureT30
Working Environment-25°~55°C, IP68 Protection
Pressure Loss△P63
Display RangeMulti-lines show 9-bit cumulative flow,6-bit instantaneous flow, signal strength flow direction, error, communication status
Unitm3, USG, Liter, cubic foot, Acre Feet
Operating ModeTwo capacitive touch keys support sliding operation.
Communication InterfacePhysically independent RS485 and infrared interface. LORA/ NB-IOT, WIFI, USART are optional.
OutputMBUS,MODBUS,ASCII,CJ188
Communication Protocol3.6V 4Ah lithium battery (battery life> 10 years), It will operate power save functions when there is no water and flow in pipe.
Power SupplyDC12-30V extemal power supply through MBUS interface, data will be permanently saved after power off.
Power consumption<0.1mW
MaterialPipe body:copper;others:PEEK

Flow rate:

Diameter Turndown ratio Flow（m³/h）
  (mm）    R Starting flow Minimum flow Q1 Boundary flow Q2 Common flow Q3 Overload flow Q4
DN15 200 0.003 0.013 0.02 2.5 3.125
DN20 200 0.004 0.016 0.026 3.2 4
DN25 100 0.01 0.04 0.064 4 5
DN32 100 0.016 0.063 0.101 6.3 7.875
DN40 100 0.05 0.2 0.32 20 25

Read more about: How does a residential water meter work?

ultrasonic water meter lorawan

With the progress of the times, the ultrasonic water meters we use are becoming more and more intelligent. Technology makes the meter reading fee smarter. Today’s main prominent ultrasonic water meters can generally be customized according to customer needs. Wired remote ultrasonic water meters, NB-loT ultrasonic water meters There are three types of water meters and LoRa ultrasonic water meters. However, most people don’t know much about these three types, especially LoRa ultrasonic water meters, and few people know about them?

Today, I will introduce to you the LoRa ultrasonic water meter produced by our company. I hope that through the introduction, you will have a better understanding!

The birth of LoRa is earlier than that of NB-loT. LoRa works in unlicensed frequency bands, so no additional fees are required. The LoRa protocol is simpler and easier to develop than NB-loT, and the relative cost is less. LoRa nodes can sleep longer or shorter according to the needs of specific application scenarios, and the battery life is longer.

LoRa Smart Ultrasonic Water Meter: Using advanced wireless transmission technology to achieve remote centralized reading of remote water meters, concentrators, and computers, without wiring, simple and convenient construction, and effectively solve the problem of difficult meter reading.

The remote water meter utilizes the wireless networking of the meter. Signal coverage without gaps. No meter reading blind spots, valve anti-rust function design. The valve can be opened and closed automatically.

Frequency automatic calibration technology: automatic adjustment of operating parameters. Effectively avoid frequency offset caused by environmental changes. Achieve super high meter reading rate.

Electromagnetic wave wake-up technology: Wake up the target smart meter to make it in the communication state during meter reading, and automatically return to the ultra-low power consumption state after meter reading, saving energy and reducing consumption.

A variety of meter reading methods are available, and wireless centralized reading system and handheld meter reading device meter reading system are selected according to different needs.

Two modes of timed uploading and real-time uploading can be selected to meet different customers’ needs.

High waterproof grade design, the protection grade can reach IP68. Using imported communication chips, it has the characteristics of high performance and low power consumption.

Extended reading: Magnetic water meter-ultrasonic water meter-mechanical water meter

Ultrasonic water meter working principle

The ultrasonic water meter adopts the time difference method to measure the flow. That is, an ultrasonic transducer is installed at the upstream and downstream of the measuring channel (pipe section) to transmit and receive ultrasonic signals.

Because the ultrasonic signal and the water flow signal are superimposed, the propagation speed of the sound wave is different in the forward and reverse flow. Therefore, the running time of the ultrasonic signal emitted by different transducers in the water is different. The fluid can be calculated by measuring the difference of the time The flow rate. Then it is converted into a flow rate, so as to realize the measurement of the flow rate.

There are two transducers on the top of the flow tube. Transducer A transmits an ultrasonic signal to transducer B (downstream), while transducer B transmits an ultrasonic signal to transducer A (countercurrent). Downstream and The countercurrent ultrasonic signal forms a certain time difference in the transmission process. In the case of the calibrated cross-sectional area of ​​the pipe diameter and the length of the standard measuring pipe, the flow rate of the meter is calculated by the calculation chip on the integrator.

Advantages and disadvantages of ultrasonic water meters

Ultrasonic water meter is a fully electronic water meter manufactured with industrial-grade electronic components using the principle of ultrasonic time difference. Compared with mechanical water meters, it has the characteristics of high accuracy, good reliability, wide range ratio, long service life, no moving parts, no need to set parameters, and installation at any angle.

The ultrasonic water meter has no moving or blocking parts in the tested pipeline, no wear, and low pressure loss. High sensitivity, can detect small changes in flow rate. At the same time, it has almost no requirements for the measured medium, has an extremely wide range ratio, and the ultrasonic water meter has a simple structure and is easy to maintain, which is very suitable for civil and industrial measurement.

But the stability of ultrasonic water meters is low.

Extended Reading: Chilled Water Flow Meter

Ultrasonic water meter Application

  1. Residential water metering and control.
  2. Industrial process measurement and control.
  3. Replace mechanical flow meters to improve measurement reliability.
  4. Replace all kinds of tightly high-performance flow meters.

Ultrasonic water meter clamp-on

Strap on flow meter X3 is a kind of ultrasonic external clamp-on flow meter. Strap on flow meter X3 is easy to install. Suitable for measuring pipe diameter Φ9.53~Φ90.

Strap on flow meter X3 can meet the needs of different pipe materials: stainless steel pipe, carbon steel pipe, copper pipe, plastic pipe, PVC, PVDF, PPH, PPE, etc.

Strap on flow meter X3 almost meets the measurement of different clean fluids: various acids, alcohols, chemical solvents, alcohol, drinking water, Coca-Cola water… etc.

Portable ultrasonic flow meter

Handheld ultrasonic flow meter realizes the non-contact measurement of liquid flow. Also often referred to as Portable Clamp-On Ultrasonic Flow Meter for Liquids.

Handheld Ultrasonic Flow Meter ( Model:2000H) has been successfully applied to measurement work in various industries. The measuring range is 20-6000mm (0.5-20 inches). A non-contact measurement method is adopted. Flexible operation and easy to carry. Conductive or non-conductive, corrosive or non-corrosive liquids can be measured. Various fluids: water, pure water, sewage, sea water, chemical fluids, river water, fuel Oil etc. can be measured.

Handheld Ultrasonic Flow Meter Reference price: USD 470.00/pc

Extended reading: Portable ultrasonic flow meter for water

Featured Digital water meters for sale

Portable Ultrasonic Flow Meter
Handheld Ultrasonic Flow Meter
Ultrasonic Clamp on Flow Meter
Strap on flow meter X3
In-Line Ultrasonic Flow Meter
Dual Channel Ultrasonic Water Meter
Insertion Ultrasonic Water Flow Meter
Magnetic Water Flow Meter
Remote Magnetic Sewage Flow Meter
Insertion Magnetic Flow Meter
Magnetic Sanitary Flow Meter

Frequently
Asked
Questions

Help Center

The measurement accuracy of the ultrasonic flowmeter is very high. Almost no interference from various parameters of the measured medium. In particular, it can solve the flow measurement problems of strong corrosive, non-conductive, radioactive and flammable and explosive media that other instruments cannot.
So what causes the inaccurate measurement of the ultrasonic flowmeter? The following are the reasons for the inaccurate measurement:
The influence of pipeline parameter equipment on the accuracy of ultrasonic flowmeter measurement.
The influence of upstream and downstream straight pipes on the accuracy of ultrasonic flowmeter measurement.
The influence of couplant on measurement accuracy.
The influence of the installation position of the ultrasonic flowmeter transducer on the measurement accuracy.

Common types of ultrasonic flow meters
①According to the measurement principle. Ultrasonic flowmeters are now the most commonly used methods for measuring flow rates are the propagation velocity difference method ultrasonic flowmeter and the Doppler frequency shift method ultrasonic flowmeter. The propagation velocity difference method can be divided into three types: time difference method, phase difference method and acoustic cycle frequency difference.
②According to the installation method of the transducer. There are two types of ultrasonic flowmeters: fixed ultrasonic flowmeter and portable ultrasonic flowmeter.
The transducer installation methods of the fixed ultrasonic flowmeter can be divided into:
A tube-segment ultrasonic flowmeter integrating transducer and measuring tube;
The external clamp ultrasonic flowmeter with the transducer clamped on the outer wall of the measuring tube;
Insertion Type Ultrasonic Flow Meter in which the transducer passes through the outer wall of the pipe and directly contacts the medium;
The transducer is attached to the inner wall of the large pipeline ultrasonic flowmeter.
③According to the channel of propagation. Ultrasonic flow meters can be divided into single-channel ultrasonic flow meters and multi-channel ultrasonic flow meters. Among them, multi-channel can be divided into two-channel ultrasonic flowmeter, ultrasonic flowmeter, four-channel and eight-channel ultrasonic flowmeter.

The ultrasonic water meter adopts the time difference method to measure the flow. That is to say, an ultrasonic transducer is installed in the upstream and downstream of the measurement channel (pipe section) for mutual transmission and reception of ultrasonic signals.

Because the ultrasonic signal is superimposed with the water flow signal. Make the sound waves travel at different speeds in the forward and reverse flow. Therefore, the ultrasonic signals emitted by different transducers have different running times in water. By measuring the difference in time, the flow rate of the fluid can be calculated. And then converted into flow, so as to achieve flow measurement.

Check more Choosing The Right 1 Inch Flow Meter.

The advantages of ultrasonic flowmeters are:

  1. Ultrasonic flowmeter is a non-contact measuring instrument, which can be used to measure fluid flow and large diameter flow that are not easy to touch and observe. It does not change the flow state of the fluid, produces no pressure loss, and is easy to install.
  2. It can measure the flow of strong corrosive medium and non-conductive medium.
  3. The measurement range of the ultrasonic flowmeter is large, and the diameter of the pipe ranges from 20mm to 5m. 4) The ultrasonic flowmeter can measure the flow of various liquids and sewage.
  4. The volume flow measured by the ultrasonic flowmeter is not affected by the thermophysical parameters such as temperature, pressure, viscosity and density of the measured fluid. Can be made into fixed and portable two forms.

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Sino-Inst, Manufacuturer for Ultrasonic Water Meter for Residential Waters. It can measure a single sound-conducting liquid medium of DN 15—40mm.

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

Strap on flow meter X3

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Strap on flow meter X3 is a kind of ultrasonic external clamp-on flow meter. Strap on flow meter X3 is easy to install. Suitable for measuring pipe diameter Φ9.53~Φ90.

Strap on flow meter X3 can meet the needs of different pipe materials: stainless steel pipe, carbon steel pipe, copper pipe, plastic pipe, PVC, PVDF, PPH, PPE, etc.

Strap on flow meter X3 almost meets the measurement of different clean fluids: various acids, alcohols, chemical solvents, alcohol, drinking water, Coca-Cola water… etc.

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

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Ultrasonic Flow Meters

Features of Strap on flow meter X3

  • The flowmeter is stuck outside the pipe, no need to change the pipeline
  • No professional knowledge is required, installation and measurement can be completed according to the operation guide
  • No moving parts, no pressure loss, can be installed and used without stopping production

Details about Strap on flow meter X3

Strap on flow meter X3 is very unique in its structural design. It uses circular magnetic steel to realize automatic engagement during installation. It only takes 2-3 minutes to complete from installation to measurement. It also uses the current popular OLED display, It can be easily read even in insufficient environments.

Strap on flow meter X3 is widely used in flow measurement and monitoring in the production process. The application of the product continuously effectively and accurately controls the flow of the fluid, while improving the yield of the product. It even saves the investment of personnel and brings benefits to the production enterprise.

Strap on flow meter X3 can meet the needs of different pipe materials: stainless steel pipe, carbon steel pipe, copper pipe, plastic pipe (PVC, PPR, PPH, HDPE), etc.

Strap on flow meter X3 almost meets the measurement of different clean fluids: various acids, alcohols, chemical solvents, alcohol, drinking water, Coca-Cola water… etc.

Specifications of Strap on flow meter X3

ProductStrap on Flow meter
ModelX3
Flow range0.1m/s~5.0m/s
Accuracy±2.0%
Repeatability0.80%
Pipe sizeφ6.35~φ90
Data storageDaily, monthly, and Annual. Flow Totalizer
Analog output4~20mA, Maximum load: 600Ω
Alarm outputDCT, Upper and lower limit alarm function(optional)
CommunicationRS485,support Modbus communication protocol
Power supply24VDC
Cable length2.0m
KeypadFour light touch buttons
ScreenOLED 128*64 displayscreen
UnitsMetric and imperial units are available, Cubic Meters(m3), Liters(L), USA Gallons(GAL)/hour,/min,Default unit setting:m3/h
TotalizerSix bit digit
Piper materialStainless steel pipe, carbon steel pipe, copper pipe, plastic pipe
Case materialAluminum alloy
Environment temp.0℃~50℃（32°F~122°F)
Medium temp.0℃~50℃（32°F~122°F)
Environment humidit0-95% relative humidity, without condensation
IP GradeIP54
MoeldX3-φ6.35X3-φ9.53 X3-φ12.7X3-φ15X3-φ20X3-φ25
Weight(KG)0.910.910.90.90.840.84
MoeldX3-φ32X3-φ40X3-φ50X3-φ63X3-φ75X3-φ99
Weight(KG)0.820.880.981.431.521.95

Read more about: what is gpm;

What is clamp-on flow meter?

Clamp-on flow meter mainly refers to an ultrasonic external clamp-on flow meter. The ultrasonic sensor is clamped on the pipeline. It can be measured without changing the pipeline.
Clamp-on flow meter can be a handheld host, portable host, etc.

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

How does a clamp-on flow meter work?

Clamp on Ultrasonic Flow Meter adopts the measurement principle of the time difference method. It uses the ultrasonic wave emitted by the sensor to propagate in the flowing fluid. The sound wave propagation speed in the downstream direction will increase, and the backward direction will decrease. In the same propagation distance, there will be different transmission times. According to the difference between the transmission time and the measured The relationship between fluid velocity measures the fluid velocity.

The flow rate of the fluid is different in different positions in the tube. The flow rate in the center of the tube is faster than the flow rate near the wall of the tube. The flow velocity distribution of the fluid in the pipeline can be represented by the flow velocity cross-sectional distribution diagram.

By setting the flowmeter and considering the cross-sectional distribution of the flow velocity, the average flow velocity can be calculated. Then the volume flow of the fluid can be obtained according to the cross-sectional area of the pipe.

Notes:
V measure fluid velocity
M ultrasonic reflection times
D pipe diameter
θ The angle between the ultrasonic signal and the fluid
T up The time when the downstream sensor transmits the signal to the upstream
T down Time from upstream sensor to downstream
ΔT = T up – T down

Extended reading: Magnetic Large Dia. Pipe Flow Meter

More Featured ultrasonic strap on flow meters

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Ultrasonic Clamp on Flow Meter

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Sino-Inst, Manufacuturer for ultrasonic Strap on flow meter . It can measure a single sound-conducting liquid medium of Φ9.53 ~ Φ90 . It can measure even liquids such as water, sea water, oil, and slurry.

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