Industrial Fuel Flow Meters

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

Industrial Fuel Flow Meters

Industrail Fuel is an important energy source for production and manufacturing. For example, diesel, marine fuel, gasoline, etc. It is very necessary to accurately measure industrial fuel. Commonly used industrial fuel flow meters, such as turbine flow meters, gear flow meters, mass flow meters, ultrasonic flow meters, etc.

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

Featured inline fuel flow meters for sale

Common Industrial Fuel

Fuel oil refers to light distillate fuel oil and heavy distillate fuel oil obtained after crude oil is distilled and processed in a refinery. The former mainly includes gasoline, diesel and jet fuel used in crawling machinery and aircraft internal combustion engines. The latter is mainly used as boiler fuel for steam furnaces and various heating furnaces.

Fuel oil is a fuel used for engine operation, mainly divided into gasoline and diesel.

There are two main types of fuel for automobiles, gasoline and diesel.

The aircraft uses aviation kerosene.

The classification of gasoline is based on the octane number it contains, such as 90#, 97#, etc. The higher the octane number, the lower the probability of deflagration produced by the car, and the better it is for the engine. Therefore, most high-end cars use higher-grade gasoline.

The classification of diesel is based on its freezing point. 0# means that when the temperature is lower than 0 degrees Celsius, it will condense into a solid. The same reason -10# means that it condenses into a solid at -10 degrees Celsius. This is the reason why the diesel cars in the northern winter have a lower label to prevent the fuel from being frozen.

Marine fuel flow meter-fuel flow meter for boat

Marine Fuel Flow Meter is a positive displacement flow meter specially used for measuring marine fuel oil (MFO). With the highest accuracy.

Large-caliber oval gear flow meters, such as 6 inch, 8 inch (DN150, DN200) etc. It is commonly used to measure the flow of oil such as marine fuel, aviation fuel, and diesel. Oval gear flowmeter is a commonly used positive displacement flowmeter. Can indicate cumulative flow, instantaneous flow, single flow, etc. on site. It can also output pulse signal, 4-20mA or 1-5V analog signal, 4-20mA, MODBUS232, 485 communication.

Extended reading: Fuel Flow Meter for Boat-Selection & Application

Fuel flow meter aircraft

Aircraft mainly use aviation kerosene as fuel, which is purified from naphtha and paraffin oil through multiple processes.

Turbine flowmeters are mainly used for aircraft kerosene.

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

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

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

Know more about: Turbine type Flow Meter

Fuel flow meter for diesel

Three kinds of flow meters are commonly used to measure diesel:
The first is an oval gear flow meter, which is also commonly used, with an accuracy of 0.5.
The second type is liquid turbine flowmeter, the accuracy can be 0.5 or 0.2, flange or thread connection
The third type is float type, installed vertically or horizontally, with an accuracy of 1.5.

Although they all measure the flow of diesel oil products, the difference is still very large.

For example, dual-rotor flowmeters and oval gear flowmeters can measure diesel fuel. And various parameters are in line with the measurement range of these two flowmeters.

However, the measurement range of the dual-rotor flowmeter is very large and the noise is very low, and the accuracy is also high. Under the conditions of high precision and low precision, the liquid flow range is very large. However, the minimum pipe diameter is 25mm and the maximum is 300mm;

The oval gear flowmeter is different. The minimum pipe diameter is 6mm and the maximum is 200mm.

And the flow range is very wide. The most important thing is that the price is relatively cheap, which is the best choice for most customers.

Learn more about Diesel fuel tank level gauges & Indicators

Ultrasonic flow meter for fuel

The ultrasonic flow meter measures the liquid flow rate quickly and effectively. There are two types of ultrasonic flowmeter technology: Doppler frequency shift and transit time.

Transit time ultrasonic flow meter is most suitable for measuring the flow of cleaning liquid. Therefore, it is the most popular type of ultrasonic meter.

Doppler ultrasonic flow meter can measure the frequency difference of sound waves reflected from bubbles or particles in the airflow. It is suitable for aerated or dirty liquids.

Mechanical fuel flow meter

Volumetric Flow Meter, as a mechanical flow meter, is also called Positive displacement flowmeter. It can measure the volume flow of high viscosity and corrosive fluids.

Volumetric Flow Meter is a mechanical instrument used to measure the volume flow of fluids. A volumetric flow meter is an instrument which can measure either directly or indirectly the volume of a substance which is passing through a specific location in a set period of time. The main advantage of these types of flow meters is that they can handle high viscosity and corrosiveness fluid.

Extended Reading: Guide and Selection for Diesel Fuel Flow Meters

Read more about: Industrial flow meters for Different industrial applications

Diesel Fuel flow meters are digital flow meters for liquid fuel consumption measurement.

Most widely used types are mechanical and digital inline fuel meters. Differential flow sensors are avilable. Like: the turbine, positive displacement (oval gear), Coriolis, and differential pressure flow meters. Sino-Instrument offers a variety of fuel flow meters for most fuels. Including diesel, bio-diesel, kerosene, gasonline, oil, heating oil, grease and certain chemicals.Sino-Instrument offers diesel fuel flow measurement solutions and free technical support. If you have any question for diesel fuel flow measurement, please contact us.

FAQ

What is a fuel flow meter?

The fuel flow meter refers to a device used to measure the volume of fuel flowing through the pipe section per unit time. Diesel flow meters can be a turbine, gear, and other flow meters. The specific choice of the flow meter to measure diesel fuel needs to be determined according to your measurement parameters.
Explore Oil and Gas Flow Meters

What is the most accurate flow meter?

At present, the most accurate flow meter is the mass flow meter.
Extended reading: Vortex Hygienic Flow Meter

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Sino-Inst, Manufacuturer for Industrial Fuel Flow Meters. For example: crude oil flowmeter, diesel flowmeter, gasoline flowmeter.

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

Micro flow meters for low flow liquids

Micro flow meters for Low Flow Indicating is a big challenge for the manufacturing industry. The smaller the flow, the more difficult the measurement.

Commonly used Micro flow meters for low flow liquid flow rate include positive displacement/oval gear, mass flow meter, and ultrasonic flow meter.

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

Featured Micro flow meters for Sale

Further reading: Industrial LPG/Propane flow meter

A Microflow meter is also called a microfluidic flow meter or a low flow meter. The Micro flow meters we are going to discuss here mainly include gear flow meters, turbine flow meters, ultrasonic flow meters, and mass flow meters.

How to choose a suitable Microflow meter depends on your actual measurement requirements. Let us analyze it together.

Ultrasonic flow meter for Micro flow

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.

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

Turbine Micro flow meter

The micro flow meter is a special flow meter designed to measure the micro flow using the turbine principle. It has extremely high accuracy, especially under high temperature and high pressure conditions. Due to the smart structure design, no precipitation will be formed during work, so the work of the instrument is completely “clean”.

MaterialShell: brass nickel plated/brass/plastic

Bearing: INO×18/8 (1.4305) stainless steel

Impeller: PVDF (polyvinylidene fluoride)

Magnet: SrFeO ceramic, ultrasonic welding
sealMVQ (silicone rubber “O” ring)
temperature range-10℃~+100℃
Accuracy class±2%
Repeatability±0.20%
Pressure rangeMaximum 2MPa
Installation methodHorizontal installation
Dimensions (L×B×H)40×55×40mm
connectionMPM connector
Provide power4.5~24VDC
OutputOpen collector
Maximum (extra) voltage output25VDC
Maximum current output25mA
ThreadG1/8 or G1/4

Know more about: Turbine type Flow Meter

Micro motion flow meter

Micro Motion Coriolis Flow Meter is a flow meter made according to the Coriolis acceleration theory. Z-Series Straight Tube Micro Motion Coriolis Flow Meter simultaneously measures mass flow, density, temperature and viscosity.

Liquid Accuracy / Repeatabilityup to ±0.2± of rate (up to ±0.1± of rate)
Gas Accuracy / Repeatability±0.20± of rate
Density Accuracy / Repeatability±0.002 g/cm3 (±0.0005 g/cm3)
Line Size1/4″ (DN8) – 2″ (DN50)
Pressure Rangeup to 1450 psig (100 barg)
Temperature Range-60 to 300 F (-51 to 149 C)
Read more about: The Pros and Cons of Micro Motion Flow Transmitters

How does micro motion flow meter work?

The micro-motion mass flowmeter is a flowmeter made according to the Coriolis acceleration theory. There is a straight tube that rotates in a plane around a fixed axis O at an angular velocity w, and a particle in the tube moves outwards along the straight tube at a speed v. Because The mass point m is in a system with both rotational motion and linear motion, so it will obtain two accelerations.

Serving size:

① Centripetal acceleration a, its value is rw^2 (r is the distance from the particle m to the axis O), and the direction points to the axis O.
② Tangential acceleration ac, its value is 2uw. The direction is perpendicular to a, it comes from the rotating pipe. At the same time it produces a reaction force to the pipe. This reaction force is the Coriolis force. Its calculation formula is:

F=2muw —————-(3-8)

Where:
F is Coriolis force, N;
w is the angular velocity, 1/s;
u is the radial velocity in the rotating system, m/s,
m is the mass of the moving object, kg.

If the density of the fluid is p, the tangential Coriolis force on any section of pipe △x is:

△F=2pA△xuw ———(3~9)

Where:
A is the cross-sectional area of ​​the pipe.

In the formula (3-9), pAu is the natural flow rate of the fluid, set as QM’, then the formula (3-9) can be expressed as:

△F= 2w△xQm————-(3-10)

From the above equation, we can know the mass flow Qm as long as the Coriolis force △F is measured. This is the measuring principle of micro-motion mass flowmeter.

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

Gear flow meter for Micro Flow

Micro Flow Meter is a micro oval gear flow meter. DN4-DN10. Suitable for flow measurement of various low-flow liquids.

Micro Flow Meter has strong adaptability to the viscosity of the liquid to be measured. There is no special Especially suitable for automobile fuel consumption, boiler fuel, medicine, food, chemical raw materials, wine, milk, vegetable oil cans Accurate measurement of small flow rates of various liquids.

Diameter (mm)Flow Range(L/H)
41-100
62-200
850-500
10100-1000

Extended reading: Turbine Insertion Flow Meter for Large Diameter Pipeline

Of course, if the medium you need to measure is not a small flow rate. Then you can consider using other types of flow meters.

For example, if you need to measure the wastewater flow of a 2-inch pipe, then you can refer to Magnetic Flow Meters Guides.

Frequently
Asked
Questions

A low flow meter is a meter specially used to measure small flow. There are many common flowmeters suitable for measuring tiny ones. Such as differential pressure type, float type, volume type, and so on. Some of these flow meters are suitable for measuring large flow rates. It is also suitable for measuring small flow. Others specialize in designing solutions for measuring small flow rates.

Flow rate meter, also known as “flow meter”, is an instrument that measures the speed of water flow. There are many kinds of models by and flow meter. For example, there are two types of rotary cup type and rotary paddle type flow meters commonly used in hydrological stations.

Liquid flow meters refer to instruments that can be used to measure the volume flow or mass flow of liquid media.

Flowmeter is one of the important measuring instruments in process automation instruments and devices. According to the physical properties of the measured medium, it can be divided into liquid flow meters and gas flow meters.

Among them, there are many types of liquid flow meters. Common liquid flow meters are vortex flowmeter, turbine flowmeter, electromagnetic flowmeter, ultrasonic flowmeter, positive displacement flowmeter, differential pressure flowmeter, rotameter, open channel flowmeter, Coriolis mass flowmeter Wait.

Extended Reading: Sanitary Flow Meters for Beer, Wine and Spirits

There are many methods and tools for measuring and controlling liquids. But it should be selected according to the actual working conditions on-site. Every instrument that measures liquid flow has its own characteristics. Choose according to its applicable characteristics. Only in this way can the performance of the instrument be brought into play.

There are many types of flowmeters, the most commonly used are as follows: 1. Electromagnetic flowmeter 2. Vortex flowmeter 3. Ultrasonic flowmeter 4. Orifice flowmeter 5. Precession vortex flowmeter

The user must provide the following parameters to select a suitable flowmeter.

  1. What medium to measure
  2. Measure the temperature of the medium, medium density, viscosity, etc.
    3.Measuring medium: pressure.
  3. Measure the minimum flow rate of the medium, the common flow rate and the maximum flow rate
  4. Measure the pipe diameter
  5. Requirements for instrument power supply and output signal
  6. Requirements for meter display and measurement accuracy
  7. Whether there is a signal interference source at the installation site, and whether it meets the conditions for on-site installation of the flowmeter

The user gives the above parameters, Sino-Inst, as a manufacturer of flow meters, can select a suitable flow meter for you. Below we introduce the above several common flow meters are usually used in which medium measurement.

Read more about: Demineralized Water Flow Measurement Case Study

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

Sino-Inst, Manufacturer for Microflow meters for low flow liquids. For example crude oil flow meter, diesel flow meter, gasoline flowmeter.

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

Clamp on Flow Meters for Liquid Pipes

Clamp on flow meters refers to the non-contact flow meter, or strap-on flow meters, which clamps the ultrasonic sensor outside the pipeline for measurement.

Clamp on flow meters installs the sensor clamp outside the pipe. No changes to the pipeline are required. The measurement is simple and flexible. Used for small to large pipe diameters. Clamp on flow meters can be installed permanently, or portable, hand-held, etc.

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

Best clamp-on flow meters for sale

Clamp On flow sensor for clamp-on flow meters

  • With powerful magnets, when measuring steel pipes and cast iron pipes, you only need to attach the sensor to the outer wall of the pipe.
  • High temperature sensor with high temperature resistant strong magnet, when measuring steel pipe and cast iron pipe, only need to attach the sensor to the outer wall of the pipeline.
  • Equipped with a ground wire terminal, it can be used in occasions with strong electromagnetic interference.
  • It can be fixed by steel belt, steel wire rope, tension belt and special clamp.
  • The upper cover of the sensor marked the emission direction of the ultrasonic signal.
  • After the junction box is filled with glue, the protection level can reach IP68.
  • Complete specifications, divided into three types of large, medium and small, measuring pipe diameter range DN15~DN6000mm, temperature range: -40~90℃. -40~160℃.
  • According to different uses, standard clamp-on sensors are divided into two categories: portable and fixed.
Types Picture Spec. Model Measurement Range Temperature Dimension
Clamp on  Small Size TS-2 DN15~DN100 -30~90℃ 45×25×32mm
Medium Size TM-1 DN50~DN700 -30~90℃ 64×39×44mm
Large Size TL-1 DN300~DN6000 -30~90℃ 97×54×53mm
High
Temperature
Clamp on
Small Size TS-2-HT DN15~DN100 -30~160℃ 45×25×32mm
Medium Size TM-1-HT DN50~DN700 -30~160℃ 64×39×44mm
Large Size TL-1-HT DN300~DN6000 -30~160℃ 97×54×53mm
Mounting
Bracket
Clamp on
Small Size HS DN15~DN100 -30~90℃ 318×59×85mm
Medium Size HM DN50~DN300 -30~90℃ 568×59×85mm
Extended EB-1 DN300~DN700 -30~90℃ 188×59×49mm
High
Temperature
Mounting
Bracket
Clamp on
Small Size HS-HT DN15~DN100 -30~160℃ 318×59×110mm
Medium Size HM-HT DN50~DN300 -30~160℃ 568×59×110mm
Extended EB-1-HT DN300~DN700 -30~160℃ 188×59×49mm

Extended Reading: Liquid Turbine Flow Meter

Portable Clamp On flow meters

Portable clamp-on flow meters refer to the host form of clamp-on flow meters.

Of course, the host of Clamp-on flow meters can be portable, hand-held, and permanently fixed.

A 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, seawater, chemical fluids, river water, fuel Oil, etc. can be measured.

Handheld Ultrasonic Flow Meter Reference price: USD 470.00/pc

Read more about Digital Water Flow Meters

New Strap on flow meter X3

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.

Read more about: what is gpm;

Clamp On flow meters for water

Advantages of Clamp-on flow meters to measure water:

  1. This is the most obvious difference between the clamp-on ultrasonic flowmeter and the electromagnetic flowmeter. The clamp-on ultrasonic flowmeter is not affected by the conductivity of the fluid. It can accurately measure pure water or other fluids with low conductivity that cannot be measured by electromagnetic flowmeters.
  2. The accuracy of the clamp-on ultrasonic flowmeter fully meets the measurement requirements. The accuracy is usually ±1%, and ±0.5% after correction.
  3. The external clamp ultrasonic flowmeter has a measuring probe outside the pipe wall. It is tightly connected to the pipe wall through a coupling agent. It is not in direct contact with the measured medium. There is no baffle, and its operating life can be well guaranteed.
  4. Strong anti-interference ability. The power supply has a wide range to meet the needs of the site.
  5. The external clamp type ultrasonic flowmeter is also very convenient to install. Just install the external clamp sensor on the outer pipe to avoid cutting off the pipe and polluting the demineralized water.

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

Clamp-on flow meter for gas

The gas ultrasonic flowmeter can not only measure high-pressure gas, but also measure atmospheric gas, including gas in steel pipe, which was a worldwide technical problem before.

For example air, argon, carbon monoxide, ethane, ethylene, helium, hydrogen, natural gas, nitrogen, nitrous oxide, oxygen, process gas, propane, saturated steam, acid gas, etc.

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Frequently
Asked
Questions

Clamp-on flow meters can be installed on new or existing pipes and sit on the outside of the pipe. This saves time and money since no cutting into the pipe is required. 

Clamp on Ultrasonic Flow Meter adopts the measurement principle of 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

Read more about: Ultrasonic flow meters types & technical guide

Ultrasonic flowmeters use sound waves to determine the velocity of a fluid flowing in a pipe.
At no flow conditions, the frequencies of an ultrasonic wave transmitted into a pipe, and its reflections from the fluid are the same.
Under flowing conditions, the frequency of the reflected wave is different, due to the Doppler effect.
When the fluid moves faster, the frequency shift increases linearly.
The transmitter processes signals from the transmitted wave, and its reflections to determine the flow rate.

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

Sino-Inst, Manufacturer for Ultrasonic Flow Meters. It can measure a single sound-conducting liquid medium of DN 15—6000mm. It can measure even liquids such as water, seawater, oil, and slurry.

Sino-Inst’s Ultrasonic Flow Meter, 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.

Refrigerant Flow Meter

Refrigerant flow meter is used for common liquid and gas refrigerant flow measurement.

There are more than 80 kinds of substances that can be used as refrigerants, the most commonly used are ammonia, freons, water and a few hydrocarbons. Accurate measurement of refrigerant flow can effectively control production and save production costs.

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

Featured Refrigerant Flow Meters for Sale

Common industrial refrigerants

  1. Water

Using water as a refrigerant is a low-cost solution that is completely non-toxic, easily available and environmentally friendly. Read more about: Digital Water Flow Meters

  1. R134A Hydrofluorocarbon

This is a hydrofluorocarbon (HFC) and haloalkane refrigerant, commonly known as halothane or Freon 134A. As a refrigerant, it has completely stable thermal characteristics, low toxicity, non-corrosiveness and non-flammability. It is widely used in automobile air-conditioning units and industrial chillers.

  1. R744 carbon dioxide
    The use of carbon dioxide as a refrigerant is advantageous because it is non-flammable and non-toxic.
  2. R717 ammonia

Ammonia (R717) is a refrigerant and is a halogen-free chemical. This is the most commonly used refrigerant in chillers. It has the highest heat absorption rating, which makes it ideal for use in small portable chillers without the need for large cooling equipment.

  1. HCFC

This is a group of refrigerants composed of HCFC compounds. They have a high GWP and are very toxic. Examples of refrigerator refrigerant types in this group include R2, R123, R124, and R151.

  1. HCS

Hydrocarbons are another refrigerant used in domestic and industrial refrigeration. Common refrigerant hydrocarbons are R600A (isobutylene) and R290 (propane).

These refrigerant types are highly flammable and therefore require careful special installation. As we all know, propane has no potential for ozone depletion, so it is suitable for environmentally friendly industrial chillers.

7. 407C Rand

The combination of hydrofluorocarbon difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2-tetrafluoroethane (R134A) will respectively provide heat, reduce flammability and reduce pressure. This refrigerant is considered to be the most suitable substitute for the R-22 refrigerant system, which will be phased out in 2020.

  1. R404A

If the cooling process requires medium and low temperature refrigerants, R404A should be considered. This is a mixture of hydrocarbons that can be used in various commercial environments, such as supermarkets and cold storage rooms.

9. R410A type

For general air conditioners, R410A is an azeotropic mixture of hydrofluorocarbons that can be used. It has no harmful effect on the ozone layer. With the phasing out of R22 refrigerant, it has become more and more popular.

  1. R448A type

This is a non-flammable HFC mixture used to replace R22 and R404A in domestic and commercial refrigeration systems. It is toxic and requires careful handling, installation and storage.

  1. R449A type

R449A is another HFC mixture with similar composition to R448A. It is used as a substitute for R404A and R507A refrigerants in medium and low temperature applications.

One of the main advantages of R449A is that it can be easily retrofitted in old refrigeration systems or installed in newer models. Another advantage is its environmental friendliness and low GWP.

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

Liquid Refrigerant Flow Meter

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℃).

The Gear flow meter for Micro flow is made of stainless steel and is used for precise continuous or intermittent measurement of the flow or instantaneous flow of liquid. It is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, grease and other high-viscosity media. It can measure the viscosity Fluids up to 10000Pa.s.

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Mass Refrigerant Flow Meter

Mass flow meter directly measures the mass flow of the medium passing through the flow meter. It can also measure the density, temperature and viscosity of the medium

Mass flow meter is a flow measuring instrument that measures the mass flow in the pipeline. The volume of a fluid is a function of fluid temperature and pressure and is a dependent variable. The quality of a fluid is a quantity that does not change with time, space temperature, and pressure.

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Sino-Inst, Manufacuturer for Refrigerant Flow Meters. For example: Ammonia, Freon-12, Freon-22, R134, R22.

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

Featured Hydrogen flow meters

How to choose a Hydrogen flow meter? Hydrogen is a valuable and widely measured industrial gas. Custody transfer metering is a very important feature of hydrogen flow measurement.

Common gas flow meters include thermal mass flow meters, vortex flow meters, precession vortex flow meters, and gas ultrasonic flow meters. How to select a hydrogen flow meter? Next, we will discuss in detail.

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

Characteristics of hydrogen

Hydrogen (chemical formula H2) consists of two hydrogen atoms, which is colorless, tasteless, odorless, non-toxic, and flammable. With a molecular weight of 2, and a specific gravity of 0.0695, hydrogen is considered the lightest gas, more than 14 times lighter than air (mv=28.8).

Hydrogen is very flammable. Under normal pressure, a mixture with a hydrogen content of 4.0% to 74% can be flammable. Since the minimum ignition energy of hydrogen (0.02mJ—one order of magnitude smaller than the minimum ignition energy of hydrocarbons) is very small, strict precautions must be taken to prevent leakage.

The most preferred hydrogen flow meter

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

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

Extended reading: Gas Mass Flow Meter

Mass flow measurement of hydrogen

At present, the Coriolis mass flowmeter and thermal gas mass flowmeter are the most reliable and the most reliable hydrogen flow measurement applications. Both of these are flow meters for direct mass flow measurement, and neither have movable parts and have a large range. The fluid contact surface is made of 316L, which improves the durability and safety of field application.

The sensors of Coriolis mass flowmeter and thermal gas mass flowmeter are all welded. Because the pressure sensor interface and temperature sensor are not required to correct the flow reading to the volume flow under the standard state. Therefore, the system pipe joint used Be reduced to a minimum.

The sensor connection method has flange connection, flange to clamp connection, thermal gas mass flowmeter can also provide large pipeline plug-in connection.

Coriolis mass flowmeters and thermal gas mass flowmeters can provide up to 0.5% accuracy due to their excellent detection technology, which has huge advantages in trade settlement and measurement.

These two types of flow meters have advanced measurement technology, good long-term application stability, and extremely low on-site maintenance costs. They are very popular measuring instruments.

The shortcomings of Coriolis mass flow meters: large pipe diameters are bulky, inconvenient to install, and extremely expensive to purchase. It is inferior to the thermal gas mass flowmeter in the small flow measurement characteristics.

Disadvantages of thermal gas mass flow meters: the high flow rate range is not as good as Coriolis mass flow meters. In order to accurately measure the hydrogen flow rate, it is necessary to use real flow calibration for the flow meter calibration.

Hydrogen flow meter—Precession Vortex Gas Flowmeter

Precession vortex flowmeter is a new type of gas flowmeter. It can be used for the measurement of natural gas, propane, air, nitrogen and other gases.

Precession Vortex Gas Flowmeter, like vortex flowmeter, is a velocity flowmeter. The cost performance of the intelligent precession vortex flowmeter is higher than vortex flowmeter. The intelligent precession vortex flowmeter can only measure gas. Precession Vortex Gas Flowmeter can be made into an integrated temperature and pressure compensation. And can measure various gases. Such as compressed air, oxygen, biogas, natural gas, coal gas, etc.

Precession Vortex Gas Flowmeter reference price: DN50, USD 600.00/pc.

Guess you like: Industrial Oxygen Flow Meters

More Featured gas flow meters

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

Can measure blast furnace gas, coke oven gas, coal gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine, gas, biogas, carbon dioxide , Oxygen, compressed air, argon, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia, etc.

Read more about: Types of biogas flow meters

There are mainly the following types of gas flow meters:

  1. Vortex flowmeter:

It is mainly used for flow measurement of industrial pipeline medium fluid, such as gas, liquid, vapor and other media. Its characteristics are small pressure loss, large measuring range and high accuracy.

When measuring the volume flow under working conditions, it is hardly affected by the fluid density, pressure, temperature, viscosity and other parameters. There are no movable mechanical parts, so the reliability is high and the maintenance is small. The instrument parameters can be stable for a long time.

  1. Gas turbine flowmeter:

The gas turbine flowmeter is a new generation of high-precision and high-reliability gas precision metering instrument developed by itself by absorbing the advanced technology of domestic and foreign flow meters, optimized design, and integrated theories of gas mechanics, fluid mechanics, and electromagnetics.

With excellent low and high pressure metering performance, multiple signal output methods and low sensitivity to fluid disturbances, it is widely applicable to the metering of natural gas, coal-based gas, liquefied gas, light hydrocarbon gas and other gases.

Extended reading: Buy Digital Gas Flow Meters & Controllers For Air-O2-N2-CO2

  1. Integrated orifice flowmeter:

It is a high-range ratio differential pressure flow device that is composed of a standard orifice plate and a multi-parameter differential pressure transmitter (or a differential pressure transmitter, a temperature transmitter, and a pressure transmitter).

It can measure the flow of gas, steam, liquid and natural gas, and is widely used in process control and measurement in the fields of petroleum, chemical industry, metallurgy, electric power, heating, and water supply.

  1. V cone flowmeter:

V-cone flowmeter is widely used in petrochemical, natural gas and other fields due to its simple structure, firmness, easy duplication, strong versatility, and low price.

This product overcomes the standard orifice plate, venturi tube, nozzle and other throttling devices, such as easy to wear, large pressure loss, small range (range ratio), high on-site installation conditions, and excessively long straight pipe sections. It can accurately measure the flow rate of various fluids in a wide range of Reynolds number.

Guess you like: Gas Mass Flow Meter

Why should you never measure hydrogen and oxygen together with a flow meter?

Because hydrogen is a flammable gas. Oxygen is a necessary condition for combustion. Measure if oxygen and hydrogen are mixed. It is easy to explode.

Therefore, when we choose a hydrogen flowmeter, we must remember to choose an explosion-proof flowmeter!

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Sino-Inst offer over 5 Hydrogen flow meters with Best Price.

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

Sino-Inst is Hydrogen flow meters suppliers, located in China. Mass Flow Meters products are most popular in North America, Mid East, and Eastern Europe. The United States, and India, which export 99%, 1%, and 1% of Hydrogen flow meters respectively.

Guide for Liquid level float switches

Liquid level float switch is a commonly used liquid level controller. For water Tank & Pump alarm and level control. Can be divided into Continuous Float Level Sensor and Point Level Float Switch.

Liquid level float switch are sensors with an electrical contact output at a specific liquid level. Floats with permanent magnets. Single or multi point level indicator. Can choose stainless steel or anti-corrosion material. It is suitable for exploratory testing of the limit of liquid in small containers (boxes, barrels, cylinders, etc.).

Sino-Inst offers a variety of Liquid level float switches for level measurement and control. If you have any questions, please contact our sales engineers.

Featured Liquid level float switches for sale

SI-U05 Cable Float Level Sensor & Swtich
SI-U02 Multi-Point Liquid Level Float Switch
SI-U03 Float Switch Water Level Controller
SI-U04 Magnetic Float Level Sensor-Reed Switch

Know more about Liquid Level Switch

Liquid level switch, also known as water level switch, liquid level sensor. As the name implies, it is a switch used to control the liquid level.

In terms of form, it is mainly divided into contact type and non-contact type.

Commonly used non-contact switches include capacitive liquid level switches, and contact float-type liquid level switches are the most widely used. Electrode liquid level switches, electronic liquid level switches, and capacitive liquid level switches can also be realized by contacting methods.

Continuous Float Level Sensor

The floating ball continuous level gauge uses the floating ball to move up and down with the liquid to trigger or release the reed switch in the tube, and output 4-20mA or other different standard models through circuit processing.

With multi-interface measurement, easy to install, and corrosion-resistant, it can meet most measurement needs. Suitable for various tanks and tank level measurement, optional on-site display.

Point Level Float Switch

The float level switch uses a magnetic float to rise or fall with the liquid level. The sensor detects the reed switch chip at the set position in the tube, and sends out a contact opening (closing) conversion signal.

One or more dry reed pipes are installed in the closed non-magnetic pipe. Then the pipe passes through one or more hollow floats with ring magnets inside. The rise or fall of the liquid will drive the floating ball to move up and down together. Then the reed tube in the non-magnetic tube will pull on or off, and then output a switch signal.

According to needs, one or more liquid level switch points can be set.

Whether it is Continuous Float Level Sensor or Point Level Float Switch, they all need to be in contact with the medium.

However, in some cases, we need to measure and control the liquid level without contacting the medium. Then we can consider the following liquid level sensors.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

How does a liquid level float switch work ?


Liquid level float switches are liquid level controllers that use one maglev ball or multiple maglev balls to send out multi-point switch signals.
Reed pipes are installed at different heights in the guide rod. When the maglev ball floats up and down as the liquid level changes. The magnetic steel in the floating ball makes the reed pipe at the corresponding position in the guide rod pull on or off, and send out a switch signal.

Read more about: 7 Level Senors for Tank Level Measurement

Explosion proof float switch

The explosion-proof float level switch is also called the explosion-proof float level controller. It is a liquid level control instrument specially designed and manufactured for use in explosive environments. Explosion-proof type ExdⅡBT4; intrinsically safe type ExiaⅡCT6.

Principle of explosion-proof float level switch:

①The mechanical strength conditions of the enclosure. That is, the shell has enough strength to withstand the internal explosion pressure without damage. And it does not produce permanent deformation that affects the explosion-proof performance.

②Control the conditions of non-detonation in the gap of the joint. That is, the shell joint surface has a sufficiently small gap and a sufficiently long engagement length. Explosive products (hot flames or particles) inside will not escape the shell and ignite the explosive mixture in the surrounding environment.

The principle of intrinsically safe explosion-proof technology is to start with limiting energy and reliably limit the voltage and current in the circuit to an allowable range. In order to ensure that the electric spark and thermal effects generated by the instrument in normal operation or short-circuit and component damage, etc., will not cause dangerous gases that may exist around it. It is actually a low-power design technique.

Multi-level float switch

Multi level float switch is also called multi point level switch. Support 1-4 liquid level measurement switch point customization.

Multi level float switch is a custom multi point float level sensor & switch. These versatile level switches are available in many materials. Like: Stainless Steel, Brass & Buna, PVC, Polypropylene or PTFE and can be ordered with an integrated temperature sensor. Use these multi-level float switches with a tank level alarm or liquid level control relay for a turnkey solution. Explosion-proof available.

Vertical liquid level float switch & horizontal liquid level float switch

Vertical liquid level float switch refers to the float level switch installed in the vertical direction. It is usually installed on the top of the tank through flanges or threads. Keep it vertical.

Horizontal liquid level float switch refers to a float level switch installed from the horizontal direction, or from the side.

Float switches for water tanks

In water treatment, the float level switch of the water tank is directly related to the safety and reliability of the entire process.

In a process, there are different types such as intermediate water tank, backwash water tank, produced water tank and waste liquid tank. The sizes of these boxes are different. The volume of the produced water and the original water tank may be larger.

In these water tanks, the water tank float level switch is used for related control. Different liquid level switches will have different actions. However, it is not necessary to have several level switches in a large water tank.

In the water tank, there are high and low level switches. The high level switch can detect if the water tank is full. If it is full, stop producing water. The low level switch is used to detect whether the water in the tank is sufficient. If there is not enough water, no more water can be sent out.

FAQ

What is float level switch?

The float level switch is a kind of level switch. The float level switch uses magnetic force to operate. No mechanical connections. The operation is simple and reliable. When the float switch floats the measured medium, the float moves the main body. At the same time, the magnet on the other end of the float will control the magnet on the switch action lever.

What is a liquid level switch?

Liquid level switch, also known as water level switch, liquid level sensor. As the name implies, it is a switch used to control the liquid level.

How does a float level sensor work?

Float level sensor: Float level sensor is designed and produced based on the principle of buoyancy and static magnetic field. The position of a floating ball with a magnet (floating ball for short) in the measured medium is affected by buoyancy. The change of the liquid level causes the position of the magnetic float to change. The role of the magnet and sensor (reed switch) in the floating ball changes the number of components (such as fixed resistance) connected in series to the circuit. Thereby changing the electrical quantity of the instrument circuit system. That is, changes in the position of the magnetic float cause changes in the electrical quantity. The change of the electrical quantity is detected to reflect the liquid level in the container.
The float level sensor is installed on the top of the container through a connection flange. The float ball floats on the liquid surface according to the principle of discharging the liquid volume phase and so on. When the liquid level of the container changes, the float ball also moves up and down. The reed switch of the ball level gauge is magnetically attracted to change the position of the liquid level into an electrical signal. The actual position of the liquid is displayed digitally by the display instrument. The floating ball level gauge can achieve long-range detection and control of the liquid level.

How do I test a float switch with a MultiMeter?

Turn on the power of the multimeter and set the multimeter to the continuity test position. The test multimeter displays 1, indicating that the test leads are disconnected.
Place the pointer of the multimeter, one wire is gently placed on the wire-in end of the switch terminal, and the other wire is lightly placed on the wire-out end of the switch terminal. If the display is 0, it means that the two terminals are connected to the normal terminal. close.
At this time, we keep the terminal still, slightly press the micro switch, and observe the universal indicator at this time, it becomes 1, which means that the switch is connected to the line, indicating that the micro switch is normal.
In the same way, we test the other two wiring terminals of the micro switch, as shown in the figure:
When no pressure is applied to the micro switch, the display is 1, indicating that the two terminals are normally open.

Sino-Inst offers over 10 Liquid level float switches – Single and Multipoints for level measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Liquid level float switches – Single and Multipoints options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Liquid level float switches – Single and Multipoint instrumentation, located in China.

Hot Water Flow Meters

Hot Water Flow Meters Improve Heating-Boiler System

Hot water flow meters refer to flow meters that can measure and indicate the flow of high temperature water. Hot water is widely used in industry and civil use. Such as heating systems, baths, boilers, industrial indirect heating, heat transfer, etc. There are many types of water flow meters. Some of the most common types include electromagnetic flow meters, turbine flow meters, and vortex flow meters. These meter types have unique features that distinguish them from each other. According to the function of the hot water flow transmitter and the user’s budget. You can choose a suitable flow meter to monitor the hot water pipeline.

Features of Hot Water Flow Measurement

What are the characteristics of hot water flow measurement? Let’s take a look.

  1. The temperature of the measured fluid is not very high. When the flow meter is installed at the entrance of the heat exchanger body. The temperature of the fluid is generally not higher than 140°C. When the liquid outlet of the heat exchanger is installed, the flow temperature is lower.
  2. The measured fluid pressure is not very good either. In order to send hot water to the highest floor in the building heating system, the pressure is sometimes higher. In the ground heating system, the highest pressure is 1MPa.
  3. The pipe diameters vary in size. The smallest user, the pipe diameter is only DN20~DN40. The large-diameter flowmeter sometimes reaches about 1m.
  4. Better cleanliness. Hot water is not as clean as tap water. The solid matter in the single water and its viscosity will not have a big impact on the general flowmeter.
  5. Corrosive. Fresh water does not corrode the flowmeter. However, geothermal water has a certain degree of corrosion. Because it contains chloride ions and so on. Ordinary stainless steel materials are corroded, and the higher the fluid temperature, the more severe the corrosion.
  6. The requirement for scope is not high. The pumps used in power plants (stations) to deliver hot water are generally combined in size. When the hot water supply is at its maximum, usually several large pumps are opened. When the heat supply is the smallest, generally only a small pump is turned on. The ratio of the maximum flow rate to the minimum flow rate is about 5~10. A flow meter for heat measurement of a single user. In the heating season, the flow measurement range of up to 10 can meet the demand. After the hot water valve is turned off, the market value of the flow should be 0.

Extended Reading: Insertion Flowmeter Types

Hot Water Flow Meter Types

Hot water is the most widely used heat carrier liquid. Due to the difference in use and design, the water supply temperature is commonly used in several grades such as 60℃, 90℃, and 130℃. There are fresh water and geothermal water in the varieties of water. The temperature of geothermal water cannot be determined independently, but it must be above 60°C to have use-value. Flow Meter Selection Guide 101: Find the Perfect Fit for Your Application

Magnetic Water Flow Meter provide highly accurate flow measurements for a wide variety of conductive fluid applications. Magnetic Water Flow Meter is a volumetric flow meter that measures liquids or liquid slurries that have a minimum conductivity of 5 µS/cm.

An electromagnetic flowmeter is an ideal instrument for hot water flow measurement. Its significant advantages are as follows.

  • The pressure loss is negligible. Because the inner diameter of the measuring pipe is the same as that of the pipe.
  • From small to large caliber, the series is complete.
  • The measurement accuracy is high, and the high accuracy can still be achieved when the flow rate is very low.
  • The temperature grade can meet the needs. Among them, the temperature resistance rating of 120°C can meet the measurement needs of most objects. The temperature resistance rating of 180°C can meet the needs of measurement objects with fluid temperatures higher than 120°C.
  • The pressure level can meet the measurement needs. In the electromagnetic flowmeter product sample, the pressure level of the finalized large-caliber electromagnetic flowmeter can only reach 0.6-1MPa. But it can be used as a special order to meet the requirements of objects with higher pressure.
  • Corrosive series products. Geothermal hot water has different corrosive properties due to different production areas. For geothermal hot water containing chloride ions, electromagnetic flowmeters with PTFE lining and titanium electrodes have met the needs.
  • Strong adaptability to the vibration of the pipeline and the environment.
  • It can measure pulsating flow with low pulsating frequency.

Extended reading: 2 inch Water Flow Meter

The turbine flow meter for hot water can measure soft water, soft water and RO water. These are the main water types best suited for turbine flow meters. The maximum hot water temperature of the turbine flowmeter is 150 degrees Celsius.

Turbine flowmeters are based on the principle of torque balance and belong to velocity flow meters. It is widely used in petroleum, chemical, metallurgy, water supply, papermaking and other industries. It is an ideal instrument for flow measurement and energy saving.

  • The function of the turbine flowmeter as a hot water flow meter:
  • High accuracy. Generally up to ±1%R, ±0.5%R, high-precision type up to ±0.2%R;
  • The repeatability is good, and the short-term repeatability can reach 0.05%~0.2%. It is because of the good repeatability, such as frequent calibration or online calibration can get extremely high accuracy. It is the preferred flowmeter in trade settlement;
  • Output pulse frequency signal. Suitable for total measurement and connection with computer. No zero drift, strong anti-interference ability;
  • High frequency signals (3-4kHz) can be obtained. Strong signal resolution;
  • Wide range, medium and large diameters can reach 1:20, and small diameters are 1:10;
  • The structure is compact and light. It is convenient to install and maintain, and has a large circulation capacity;
  • Suitable for high-pressure measurement. No holes are required on the meter body, so it is easy to make a high-pressure meter;
  • There are many types of sensors. Various types of sensors can be designed according to the special needs of users, such as low temperature type, two-way type, downhole type, sand mixing type, etc.;
  • It can be made into a plug-in type, suitable for large-caliber measurement. The pressure loss is small, and the price is low.

Extended Reading: Metal Tube Flow Meter Applications

Use a vortex flowmeter to measure hot water. The pipe diameter of the boiler feed water is below 300mm, which is exactly the pipe diameter range of the full-tube vortex flowmeter.
Different from measuring steam, when measuring hot water, the installation of vortex flowmeter should ensure that the pipe is full and there is no air. The horizontal installation is suitable for the lowest point. When vertical installation, the hot water should flow from bottom to top. Inaccurate.

  • Features of measuring hot water flow with vortex flowmeter:
  • The temperature of the hot water is not very high, and the maximum temperature does not exceed 140 ℃;
  • The cleanliness of hot water is relatively high, and the water does not contain solid matter;
  • The water contains chloride ions, which is corrosive to ordinary steel. And as the water temperature rises, the corrosiveness increases;
  • The maximum pressure of hot water used in the heating system is 1MPa. The pressure used for water is higher, about several megapascals;
  • The pipe diameters vary. The pipe diameter of the boiler water supply pipe is 50~300mm. The pipe diameter of the heating system is quite different. The smallest pipe diameter is 20-40mm, and the largest pipe diameter can reach 1000mm.
  • The flow range ratio is about 5:1~10:1.

The adaptability of ultrasonic flowmeter is incomparable to other types of testing instruments. It has been made into a basic type, high temperature type, explosion-proof type, and wet test type instrument panel with different sound channels to incorporate different substances, different places and different Pipeline standard flow measurement.

Extended reading: non contact flow meter

Ultrasonic flowmeters mainly have the following advantages in practical application:

  • Ultrasonic flow meters are more convenient and faster to install and maintain in practice.
  • The measuring pipe diameter of the ultrasonic flowmeter is relatively large.
  • The measurement reliability of the ultrasonic flowmeter is high.
  • The measurement of ultrasonic flowmeter will not be affected by fluid-related parameters
  • It can be used as a clamp-on ultrasonic flowmeter, which is quick and easy to install and use.
  • It can measure heat and flow at the same time.

Extended reading: Industrial VS Residential inline water flow meters

On the large-diameter pipes of the power plant (station), the orifice plate is still used to measure the flow of water supply and the amount of return water.

Mainly take the following advantages:

  1. The orifice itself has high reliability. The heating will not be interrupted due to the orifice plate.
  2. Convenient verification. The orifice plate only needs to be verified by geometric method. It is not necessary to send the verification center to the standard device for real flow calibration like some flow sensors and transmitters.
  3. When the caliber is large, the investment is relatively low.

Its biggest shortcoming is the large pressure loss, which is not conducive to saving power.

Extended reading: Insertion Ultrasonic Water Flow Meter – Designed for Agricultural Irrigation, Garden Management

Extended Reading: Chilled Water Flow Meter

Hot Water Flow Meter Specifications

Hot water flow meterPipe diameter rangeAmbient temperatureMedium temperatureReference accuracy
Magnetic flow meterDN15~DN3000-25ºC~+60ºC -25℃~+150℃±1.0%
Turbine flow meterDN4~DN200 -10~+55℃ (-196~80)℃
-20~+80℃;-20~+120℃; -20~+150℃;
 ±0.5%, ±1%
Vortex flow meter DN15~DN300
DN300~DN1000
-35℃~+60℃ Piezoelectric type :-40~150,-40~260,-40~330℃;
Projected Capacitive:-40~400℃ (Consulting supply)
 
±1%
Ultrasonic flow meter DN15~DN6000-20ºC~+60ºC -40℃~+160℃ ±1% 

Extended reading: Quantitative control with turbine flowmeter

Hot Water Flow Meter with Pulse Output

Commonly used flow meters have three forms: current output, voltage output, and pulse output.

Among them, the current output and the voltage output signal of the instrument are in line with the International Electrotechnical Commission (IEC) standard. There is currently no standard for the pulse output signal of the instrument.

The flowmeter with pulse output, its output is a pulse signal proportional to the flow rate. Compared with the analog signal of voltage and current, the pulse signal is convenient for remote transmission without reducing the accuracy, and there is no zero drift. It is easy to connect with the computer, easy to carry out cumulative display and has a strong anti-interference ability.

Extended reading: Ultrasonic Water Meter for Residential Water

Water Flow Meter Types

There are many types of flow meters for measuring water.

Common ones are V cone flowmeter, electromagnetic flowmeter, metal rotor flowmeter, vortex flowmeter, liquid turbine flowmeter, ultrasonic open channel flowmeter, ultrasonic flowmeter, etc.

At present, electromagnetic flowmeters and turbine/vortex can solve most of the working conditions.

More about:

Featured Digital Water Flow Meter

Extended Reading: Inline Ultrasonic Flow Meter

Hot Water Flow Meter Price

Sino-Inst offers over 30 water flow meter products. About 50% of these are differential pressure flow meters. 40% are water meters (like the Insertion Turbine Flow Meter), and 40% are water treatment (like the Annubar flow meter ).

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

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

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

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

Chemical Flow Meter Guide

What is Chemical Flow Meter?

Chemical Flow Meter is also known as chemical resistant flow meter. It is a flow meter used to measure common chemical fluid media. In chemical production control and metering, between chemical reaction storage tanks, or chemical raw material feed pipelines.

Sino-Inst offers a wide range of liquid and gas flow meters to help you regulate the flow of water, petroleum products, fuels, chemicals and more.

So how do choose the most suitable Chemical Flow Meter? Hope you can find the answer after reading this article.

Featured mechanical & digital flow meter for chemicals

If you want to choose a suitable chemical flow meter, you must first understand the characteristics of the chemical raw materials you need to measure.

According to different forms, chemical raw materials can be divided into solid chemical raw materials, liquid chemical raw materials, and gas chemical raw materials. There are many liquid and gas chemical raw materials, and most of them are corrosive. Special attention should be paid to them during transportation and storage.

The chemical flow meter mainly measures gas and liquid chemical raw materials.

Common characteristics of chemical fluids that need to be considered when measuring flow rate:

  1. Corrosive

This is the most common characteristic of chemical materials. Corrosive acid, alkali, salt solution.

  1. Flammable and explosive

Compared with flammable liquids and solids, flammable gas is easier to burn, and the burning speed is fast, and it burns out. Gas composed of simple components is more flammable, the faster-burning rate has higher flame temperature and greater risk of fire and explosion than gas composed of complex components.

  1. Electrified

Most flammable liquids are electrolytes. Such as crisps, ketones, gasoline, esters, aromatics, and petroleum products.

These substances are transported, poured, shaken, stirred, and flowed at high speeds in pipelines, storage tanks, tank trucks, and oil tankers.

Because friction is easy to generate static electricity, when the static charge accumulated to a certain extent, static sparks will be generated, which may cause burning and explosion.

  1. Stickiness

Such fluids include glue, resin, asphalt, and molasses.

Gear Flow Meter – A New Choice for Chemical Liquids

Gear Flow Meters produced by Sino-Inst has high machining accuracy and precise installation. The rotation of the gear is scanned by non-contact. Each tooth produces a pulse. The resolution is very high. The cylindrical gear transmitter can measure very small flow. Quantitative small volume of liquid.

The new Gear Flow Meter made of PTFE is widely used in the chemical industry and laboratories. 98% nitric acid and sulfuric acid resistant to hydrofluoric acid. It has not been corroded after long-term continuous use.

Gear Flow Meter is suitable for:

  • 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

Extended reading: High-quality hydraulic fluid flow meters

Chemical flow meters types

The following will explain the flowmeters commonly used in the chemical industry.

  1. Electromagnetic flowmeter. When a conductive fluid flows through an electromagnetic field, the velocity of the fluid can be obtained by measuring the voltage. The electromagnetic flowmeter has no moving parts and is not affected by the fluid. The accuracy of measuring conductive liquids when the tube is full is very high. The electromagnetic flowmeter can be used to measure the flow rate of the slurry fluid.
  2. DP flowmeter can be used to measure the flow rate of most liquids, gases and steam. Positive displacement flow meter (PD). The PD flowmeter is used to measure the volumetric flow rate of liquid or gas. It introduces the fluid into the measuring space and counts the number of rotations. Impellers, gears, pistons or orifices are used to divert fluids.
  3. Vortex flowmeter. The vortex flowmeter is to place a non-streamlined vortex generator in the fluid, and the speed of the vortex is proportional to the speed of the fluid to calculate the volume flow. The vortex flowmeter is suitable for measuring liquid, gas or steam. It has no moving parts and no fouling problem. The vortex flowmeter generates noise and requires the fluid to have a higher flow rate to generate the vortex.
  4. Thermal mass flow meter. The fluid velocity is measured by measuring the increase in the temperature of the fluid or the decrease in the thermal sensor.
  5. Coriolis flowmeter. This kind of flowmeter uses a vibrating fluid tube to produce a deflection corresponding to the mass flow rate for measurement.
  6. Turbine flowmeter. When the fluid flows through the turbine flowmeter, the fluid causes the rotor to rotate. The rotation speed of the rotor is related to the speed of the fluid. From the average flow rate of the fluid felt by the rotor, the flow rate or total amount is derived.
  7. Ultrasonic flowmeter. The propagation time method and the Doppler effect method are methods often used in ultrasonic flowmeters to measure the average velocity of the fluid. Like other speed meters, it is a meter that measures volume flow.

Electromagnetic flowmeter F4, F46, PFA, rubber lining

Electromagnetic flowmeters can measure the flow of general conductive liquids. It can also measure the volume flow of liquid-solid two-phase flow, liquid with high viscosity, strong acid, strong alkali, and salt liquid medium.

For chemical liquids, as long as they are conductive liquids, electromagnetic flowmeters can measure them.

But we need to choose the appropriate lining and electrode according to the characteristics of the chemical liquid.
You can refer to the liner and electrode material usage table below.

Lining material selection:

Lining material

Linner

Main performance

Application

Diameter

Rubber

Neoprene(CR)

1. It has excellent flexibility. High tearing force. Good wear resistance.
2. Resistant to the corrosion of low-concentration acid, alkali, and salt media. Not resistant to corrosion by oxidizing media.

1. <60℃
2. General water, sewage, mud and mineral slurry with weak abrasiveness

DN65~DN1600

Polyurethane Rubber(PU)

1. It has excellent wear resistance (equivalent to ten times that of natural rubber)
2. Poor acid and alkali resistance.
3. It cannot be used for water mixed with organic solvents.

1. <80℃
2. Neutral and strong abrasion ore slurry, coal slurry, mud, etc.

DN25~DN500

Silicone rubber

1. It has excellent flexibility. High tearing force. Good wear resistance.
2. High temperature resistant non-corrosive medium.

1. <180℃
2. Hot water

DN40~DN1600

Fluoroplastics

PTFE(F4)

1. It is a material with the most stable chemical properties in plastics. Can withstand boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia. It is also resistant to concentrated alkali and various organic solvents. Not resistant to the corrosion of chlorine trifluoride, high temperature oxygen trifluoride, high flow rate liquid fluorine, liquid oxygen, and ozone.
2. Poor wear resistance.
3. Poor anti-negative pressure ability.

1. <120℃
2. Strong corrosive media such as concentrated acid and alkali
3. Sanitary medium

DN10~DN1600

Teflon F46(FEP)

1. The chemical properties are equivalent to PTFE
2. Tensile strength and abrasion resistance are better than PTFE
3. Can withstand high pressure resistance.

1. <180℃
2. Corrosive acid-base salt
3. High pressure and negative pressure resistance

DN10~DN200

PFA

1. The chemical performance is equivalent to F46
2. Compressive and tensile strength due to F46

1. <180℃
2. Corrosive acid-base salt
3. High pressure and negative pressure resistance

DN10~DN300

Electrode material selection:

MaterialMedium
316LDomestic water, industrial water, raw water, urban sewage, etc.
Hastelloy B (HB)Sodium hydroxide ammonium hydroxide alkali solution and weak organic acid
Hastelloy C (HC)Oxidizing salt solution (Fe+++, Cu++, seawater)
Titanium (Ti)1. Salt solution (chloride, sodium salt, potassium salt, ammonium salt, sea water, etc.)
2. Alkaline solution (such as concentration less than 50% potassium hydroxide solution)
Tantalum(Ta)1. Hydrochloric acid, sulfuric acid, oxidizing acid, aqua regia
2. Chlorine dioxide, ferric chloride, hypochlorous acid, sodium cyanide, lead acetate, etc.
Platinum (Pt)Acid, alkali, salt solution
Tungsten carbide (WC)Handled neutral industrial sewage and domestic sewage. Resistant to solid particle interference

Guess you will like: Magnetic Flow Meters technical guide|What is &How they work? 

Of course, in addition to electromagnetic flowmeters. To measure acidic media, oval gear flowmeters, vortex flowmeters, and turbine flow sensors made of acid-resistant materials can also be used. The parts in contact with the medium are made of acid-resistant materials, which can resist general acidic substances.

Such fluids include solvents, solutions, ethanol, diesel, and clean water.

Turbine flow meters are less expensive and usually have chemical flow sensors that have a compact design.

These flow meters are volumetric, meaning that they can measure liquids passing through them either indirectly or directly.

Some of the advantages of using turbine flow meters are that they have high accuracy, can measure high pressure, and have a large measuring range.

When the clamp-on ultrasonic flowmeter is working, the liquid does not directly contact the flowmeter. So it is suitable for various corrosive liquids. But its accuracy rate is relatively low.

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

Commonly used chemical liquid-flowmeter recommendation

Chemical FluidsAvailable Flow Meters
Sulfuric acidElectromagnetic flowmeter, PTFE gear flowmeter
Acetic acidElectromagnetic flowmeter, PTFE gear flowmeter
Hydrochloric acidElectromagnetic flowmeter, PTFE gear flowmeter
Chemical sewageElectromagnetic Flowmeter
Liquid nitrogenCryogenic turbine flowmeter
Hydrogen peroxideElectromagnetic Flowmeter
AsphaltGear flow meter

Of course, the choice of flowmeter also needs to be determined according to the actual measurement parameters.

More chemical liquid flow measurement solutions

Sino-Inst, Manufacturer for Chemical Flow Meters. These chemical flow meters are easy to use and install on hose ends, pumps or fluid transfer systems. These chemical flow meters are designed for today’s pesticides, fertilizers, and many other chemicals.

Each chemical flow meter has different measurement materials and different measurement characteristics. Compatible with other chemical liquids or oils.

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

If you are not sure which chemical flow meter is right for your measurement? Please feel free to contact our sales engineers. Based on years of experience in measuring chemical fluid flow, we will help you find the right chemical flow meter.

Cryogenic Pressure Transducers

Cryogenic pressure transducer for low temperature pressure measurement.  -196℃~+125℃、-260℃/-350c(especial).

The Cryogenic pressure transducer adopts a stainless steel integrated packaging structure, and the pressure-sensitive diaphragm adopts an excellent special design. It works safely and stably in an ultra-low temperature -196℃ environment. Used for cryogenic scientific experiments such as liquid oxygen/liquid nitrogen/liquid hydrogen/cooling tank/recommendant/low temperature storage tank.

Sino-Inst offers a variety of Pressure Sensors for pressure measure and control. If you have any questions, please contact our sales engineers.

What is Cryogenic pressure transducer?

The Cryogenic pressure sensor adopts a stainless steel integrated packaging structure, and the pressure-sensitive diaphragm adopts a special design. This can make the sensor work stably in an ultra-low temperature -196 degrees Celsius environment.

Its advantages are small size and extremely high measurement accuracy. It brings convenience to scientific research work, high dynamic response frequency, strong corrosion resistance and long working life.

Even if the purchase cost is high, the later use value is much higher than its own value. In the future of technological development, low-temperature pressure sensors will be used more and more widely.

Read more about: What is industrial pressure transmitter?

Features of Cryogenic Pressure Transducer

  • 0-5vdc, 0-10vdc, 4-20mA Signal output optional
  • -196℃~+125℃、-260℃/-350c(especial)
  • Stainless Steel Construction
  • IP65 or IP67 enclosure
  • Product range: 0-2000bar

Extended reading: cryogenic fuel level indicator

Parameters of Cryogenic Pressure Transducer

Product range: 0-2000bar
Temperature: -196℃~+125℃, -260℃/-350c (especial)
Signal output: mv, 0-5vdc, 4-20mA, Hart, Rs485
Range: 0~0.2MPa…15MPa…60MPa Pressure type: absolute pressure, gauge pressure
Working voltage: 5-15VDC (10VDC) / 9-36vdc
Signal output: 0-5vdc, 0-10vdc, 4-20mA
Zero output: ±5%FS (typical)
Full load output: 10mV, 20mV, 100mV option
Linearity: 0.1%FS, 0.2%FS
Repeatability: 0.05%FS
Accuracy: ±0.25% FS, ±0.5% FS (default)
Room temperature: 0.1% FS, 0.2% FS, 0.5% FS
Low temperature: 0.5% FS% ~ 3% FS
Working temperature: -196℃~+125℃, -260℃/-350c (especial)
Low temperature zero drift: 1 ~ 4% FS (full-temperature zone)
High temperature zero drift: 1 ~ 4.5% FS (full-temperature zone)
Response frequency:> 1kHz or> 5kHz optional
Insulation resistance: ≥ 100MΩ/50V
Safe overload: 150% FS (1.5 times full scale)
Limit overload: 300% FS (3 times the full scale)
Vibration: 5 ~ 1000Hz, amplitude 2mm, X, Y, Z each to 30 minutes, the output changes less than 0.1% FS
Thread: M3, M4, M5, M6, M8, M10, M12 × 1 or a designated
Measuring medium: liquid oxygen/liquid nitrogen/liquid hydrogen, etc.
Humidity: 95% RH
Waterproof rating: IP65 or IP67 enclosure

Extended reading: Pressure indicator transmitters

Application of Cryogenic pressure transducer

Cryogenic pressure transducer has small size, high measurement accuracy, high dynamic response frequency, strong corrosion resistance and long working life.

Our professional technical group provides you with customized services. This product is mainly used for: low temperature scientific experiment, liquid

Oxygen, liquid nitrogen, liquid hydrogen, liquid helium, etc. Pressure and low temperature measurement of cooling tanks, cryogenic storage tanks, propellants, etc.
Cryogenic storage tanks for aerospace, aviation, naval vessels, etc.

If you need to measure not liquefied nitrogen and liquefied oxygen, but gas nitrogen and oxygen. You can refer to:

Industrial oxygen flow meters Nitrogen flow measurement

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

More Featured Pressure Transmitters

Extended Reading: Resistive Pressure Transducer

Sino-Inst offers over 20 Pressure sensors. A wide variety of  Pressure sensors options are available to you. Such as free samples, paid samples. Sino-Instrument is a globally recognized manufacturer of Pressure sensors, located in China.

Sino-Inst sells through a mature distribution network that reaches all 30 countries worldwide. Pressure sensors products are most popular in Europe, Southeast Asia, and Mid East. You can ensure product safety by selecting from certified suppliers. With ISO9001, ISO14001 certification.

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Karman vortex air flow sensor VS Mass air flow sensor

Karman vortex air flow sensor is a commonly used flow meter for measuring air. Karman vortex air flow sensor is also called vortex shedding flow meter.

There are many types of instruments that can be used to measure air, but the actual air flow rate used in the field is divided according to its principles, and there are not many types. Karman vortex air flow sensor and Mass air flow sensor are two commonly used.
Well.

Which one should you choose?

What is a Karman vortex air flow sensor?

Karman vortex air flow sensor is a volume flow meter.

Karman vortex air flow sensor uses airflow to bypass a cone and generate two rows of vortices downstream. The vortex frequency has a functional relationship with the intake air flow. An instrument that determines the air flow by detecting the frequency of the vortex by optical or ultrasonic methods.

Extended Reading: Digital air flow meters

What is a mass air flow sensor ?

The mass air flow sensor is a mass flow meter. Also called Thermal gas mass flow meters.

Thermal gas mass flow meters are instruments that use the principle of thermal diffusion to measure gas flow. The sensor is composed of two reference thermal resistance (RTD).

Thermal gas mass flow meter can measure air, nitrogen, carbon dioxide, methane, etc.
A single component or a mixture of certain components. The flowmeter is generally verified with ammonia or air as the medium when it leaves the factory.

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Karman vortex air flow sensor VS Mass air flow sensor

NameKarman vortexMass
Appearance
InstallationFlange/InsertFlange/Insert
Measurement PrincipleThrough measuring frequency of
turbulences behind an obstacle to
reflect the velocity of the gas, so
measures the actual volume flow of
the gas .
Measures the mass flow of the gas
via measuring the energy
needed to keep a heated resistor
at a constant temperature.
Temperature and Pressure CompensationTo calculate the standard volumetric flow , need temperature and pressure compensation . ( Requires temperature and pressure measurement additionally )There is a fixed relationship
between standard flow and mass flow (Be determined by the density of gas under standard condition ) , no need the temperature and pressure compensation.
SensitivityNo response to the flow less than 4 m/s.Can measures the flow small to 0 m/s.
Measure Ranges4-75 m/s0-224 m/s
Accuracy±1.5%
±1~2.5%
Main factors affecting measurement accuracyvibrate(a slight shaking can affect the measuring accuracy a lot)
The cleanliness of the measured gas (No long-term measurement behind the air compressor)
Repair and
calibration
Can not install or uninstall under pressure, high cost of repair or calibration.Can install or uninstall under pressure,low cost of repair or calibration.

Extended reading: Volumetric Flow Rate To Mass Flow Rate

Applicaitons :

The Karman vortex air flow sensor is widely used, gas, liquid, and steam can be measured.

The Mass air flow sensor can only measure gas;

Price:

Karman vortex air flow sensor is much cheaper;

Installation conditions:

The vortex flowmeter has requirements for the installation of the straight pipe section of the measuring pipeline, generally the first 10 and the back 5.

The thermal mass flow meter has no limitation.

Features:

  1. Thermal gas mass flow meters have the following technical advantages:

A true mass flow meter does not require temperature and pressure compensation for gas flow measurement. The measurement is convenient and accurate. The gas mass flow or standard volume flow can be obtained.

Wide range ratio, can measure gas with flow rate as high as 120Nm/s and as low as 0.1Nm/s. Can be used for gas leak detection.

Good seismic performance and long service life. The sensor has no moving parts and pressure sensing parts, and is not affected by vibration on measurement accuracy.

Easy to install and maintain. If site conditions permit, installation and maintenance can be achieved without stopping production. (Need special customization)

Digital design. Integral digital circuit measurement, accurate measurement and convenient maintenance.

Using RS-485 communication can realize factory automation and integration.

Oxygen, nitrogen, hydrogen, road gas and multi-component gas measurement.

Blast furnace gas and coke oven gas measurement.

Gas flow measurement for natural gas, liquefied gas, flare gas, etc.

Primary air and secondary air flow measurement of power plant blast furnace.

Flow measurement of underground ventilation or exhaust system in mines.

Flue gas measurement.

Compressed air measurement.

Extended reading: Gas mass flow controller working principle

  1. The vortex flowmeter has the following advantages:

The output signal is not affected by the temperature, pressure, and density components of the fluid, and is directly proportional to the fluid flow rate.

The sensing element does not contact the medium and has high reliability.

No moving parts, simple and firm structure.

Wide measuring range and high precision.

The pressure loss is small and the energy saving is significant.

Read more about: Vortex Shedding Flow Meter Working Principle

More Featured Air flow sensors

Extended reading: What is an air pressure transducer?

Sino-Inst’s air flow sensor offer reliable and accurate volume flow measurement in a large range of sizes and pressure rating while being fully compliant with international standards.

Sino-Inst is the risk-free choice for your gas flow measurement applications.

Sino-Inst supplies air flow sensors, like: gas turbine flow meter. vortex flowmeter, thermal mass flow meter, and more. More about Types Of Air Flow Measurement Instruments.

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