Inline air flow meters measure the volume or mass flow of air/compressed air. Vortex flow meters and thermal mass flow meters are more common inline air flow meters.
An line flow meter is a flow meter with the function of displaying flow rate on-site. The sensor of the flow meter is installed on the fluid pipe. Digital display or pointer shows the flow rate on the spot. Read more
In-line flowmeters could be digital and mechanical flow meters. Common in-line flowmeters include turbine flowmeters, electromagnetic flowmeters, and ultrasonic flowmeters. With stainless steel material, analog and 4-20mA output, in-line flow meters can measure and controll inline flow.
Features of In-line Flow Meters
Local LCD display flow rate.
Signal output: analog, 4-20mA, pulse, and so on.
Liquid, Gas pipe flow measurement.
Special materials can be selected depending on the working conditions. Such as PTFE
CFM is a common imperial flow unit, cubic feet per minute. For a certain volume of air flow passing in a unit time, m3/h air volume unit is generally used in China. Other countries also use the British air volume unit cfm (cubic foot per minute). That is ft3/min cubic feet/minute, 1CFM=28.316846592 L/MIN=0.028316847 m3/min
SCFM English standard cubic foot per minute means standard cubic foot per minute, British flow unit. Both ACFM & SCFM are units of measurement for English flow ACFM=actual flow rate ft^3/min
Converters for conversion and calculation of flow. Or a calculation tool that requires flow measurement to obtain other measurement parameters. Help users choose the right flow sensor and transmitter!
Compressed air is an important secondary energy source for industrial production. Most of it is converted from electrical or thermal energy through compressors.
The working fluids converted from a large amount of energy are managed to achieve the effect of saving energy and improving equipment management.
Compressed air It is an important economic indicator for cost accounting of enterprises and institutions. This is the main purpose of compressed air flow measurement.
Compressed air flow is an important parameter that expresses the performance of an air compressor, and it is also an important parameter measured in an industrial process.
With the widespread application of air compressors, accurate measurement of its flow is essential for product upgrades, industrial production process control and monitoring, and energy conservation and emission reduction.
Compressed air has the following characteristics. Sino-Inst suggestion: Combine the characteristics of compressed air to make a reasonable selection of compressed air flow meters.
Air Velocity is measurement of the rate of displacement of air or gas at a specific location.
Air velocity (distance traveled per unit of time) is usually expressed in Linear Feet per Minute (LFM). By multiplying air velocity by the cross section area of a duct, you can determine the air volume flowing past a point in the duct per unit of time. Volume flow is usually measured in Cubic Feet per Minute (CFM). Extended reading: What is an air pressure transducer?
1CFM is 0.028 cubic meters per minute. CFM is a unit of gas flow, the full name is cubic feet per minute. It means the air flow of a certain volume through the filter in unit time. Air flow is the amount of air flow per unit time. China generally uses m3/h air volume units, and foreign countries also use British air volume units cfm (cubic foot per minute). That is ft3/min cubic feet/minute, the two are converted into: 1cfm≈1.7m3/h. Extended reading: Orifice Plate Flow Meter
Sino-Instt offers over 10 Inline Air Flow Meters, at the Best Price.
A wide variety of Inline Air Flow Meters options are available to you, such as free samples, paid samples. All of our flow meters can wokrk with the AMS NEW TREX.
Sino-Inst is an Inline Air Flow Meters supplier, located in China. Inline Air Flow Meters products are most popular in North America, Mid East, and Eastern Europe.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
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.
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.
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.
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.
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.
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.
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
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.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
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.
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”.
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.
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.
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.
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.
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.
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.
What medium to measure
Measure the temperature of the medium, medium density, viscosity, etc. 3.Measuring medium: pressure.
Measure the minimum flow rate of the medium, the common flow rate and the maximum flow rate
Measure the pipe diameter
Requirements for instrument power supply and output signal
Requirements for meter display and measurement accuracy
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.
Petrol flow meters are often used for inline monitoring of gasoline flow rates. Positive displacement & Turbine flow meters are commonly used industrial fuel flow meters. Sino-Inst offers a variety of petrol flow meter for flow measurement. If you have … Continue reading →
Cheap flow meters means to choose the lowest cost flow meter while satisfying your measurement needs. How to choose the lowest cost flow meter? Cheap flow meters are not equal to any flow meter. Different flowmeters are required to measure … Continue reading →
Oxygen Flow Meters are digital flow meters that can measure industrial oxygen. It is very important to choose a suitable flow meter to measure and monitor the oxygen flow. Sino-Inst offers a variety of Industrial Oxygen Flow Meters for flow … Continue reading →
CO2 flow meters are instruments that can measure the flow of gaseous or liquid carbon dioxide. CO2 is a common industrial gas, and effective measurement is very important. Sino-Inst offers a variety of CO2 flow meters for flow measurement. If … Continue reading →
Biogas Flow Meters are instruments that can measure the flow of biogas. Could be a vortex flow meter, thermal mass flow meter, etc. Commonly used in biogas stations, biogas production fermentation tanks, etc. Sino-Inst offers a variety of Biogas Flow … Continue reading →
Sino-Inst offers a variety of Digital Beer Flow Meters for flow measurement. If you have any questions, please contact our sales engineers. Featured Beer Flow Meters for Sale More about: Sanitary Flow Meters for Sale The Use of Beer Flow … Continue reading →
LPG flow meter is used for flow measurement of liquefied petroleum gas. The flow measurement of LPG is very important in industrial production, transportation and trade settlement. Sino-Inst offers LPG/propane gas flow meter at competitive low price from China gas … Continue reading →
Wet Gas Flow Meter is an instrument used to measure industrial wet gas flow. Such as wet air, wet gas and wet chlorine, etc. Sino-Inst offers a variety of Wet Gas Flow Meters for flow measurement. If you have any … Continue reading →
Featured Inline Propane Flow Meter Propane is also generally referred to as liquefied petroleum gas (LPG). So what is the difference and connection between propane and LPG? Next, let’s take a look together. Propane VS LPG Because propane is one … Continue reading →
Featured Inline Air Flow Meters Inline air flow meter units conversion Inline air flow meter cfm CFM is a common imperial flow unit, cubic feet per minute.For a certain volume of air flow passing in a unit time, m3/h air … Continue reading →
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. Sino-Inst offers a variety of Clamp on flow meters for flow measurement. If you have any … Continue reading →
Cryogenic Flow Meters for Highly Accurate and Reliable Cryogenic Fluids Flow Measurement. Sino-Inst offers a variety of Cryogenic Flow Meters for Cryogenic fluids flow measurement. If you have any questions, please contact our sales engineers. Featured Cryogenic Flow Meters Cryogenic … Continue reading →
Common sanitary flow meters are sanitary magnetic flow meters and sanitary turbine flow meters. Composed of 304/316 stainless steel. A Sanitary flowmeter with Tri-Clamp fittings is easier to install and disassemble. Suitable for the food hygiene industry. Sino-Inst offers a … Continue reading →
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.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
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.
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.
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
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.
Advantages of Clamp-on flow meters to measure water:
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.
The accuracy of the clamp-on ultrasonic flowmeter fully meets the measurement requirements. The accuracy is usually ±1%, and ±0.5% after correction.
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.
Strong anti-interference ability. The power supply has a wide range to meet the needs of the site.
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.
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.
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
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.
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.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
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.
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
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.
R744 carbon dioxide The use of carbon dioxide as a refrigerant is advantageous because it is non-flammable and non-toxic.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
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.
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.
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.
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.
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.
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.
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.
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.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
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.
What are the characteristics of hot water flow measurement? Let’s take a look.
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.
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.
The pipe diameters vary in size. The smallest user, the pipe diameter is only DN20~DN40. The large-diameter flowmeter sometimes reaches about 1m.
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.
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.
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.
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.
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.
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.
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.
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:
The orifice itself has high reliability. The heating will not be interrupted due to the orifice plate.
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.
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.
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.
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.
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.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
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.
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.
Common characteristics of chemical fluids that need to be considered when measuring flow rate:
Corrosive
This is the most common characteristic of chemical materials. Corrosive acid, alkali, salt solution.
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.
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.
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.
The following will explain the flowmeters commonly used in the chemical industry.
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.
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.
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.
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.
Coriolis flowmeter. This kind of flowmeter uses a vibrating fluid tube to produce a deflection corresponding to the mass flow rate for measurement.
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.
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 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:
Material
Medium
316L
Domestic 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
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.
Specifications of Slurry Flow Meter Benefits of Magnetic flow meter for slurry Working Principle…
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.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
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.
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.
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.
Through 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 Compensation
To 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.
Sensitivity
No response to the flow less than 4 m/s.
Can measures the flow small to 0 m/s.
Measure Ranges
4-75 m/s
0-224 m/s
Accuracy
±1.5%
±1~2.5%
Main factors affecting measurement accuracy
vibrate(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.
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.
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.
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.
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’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.
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
Liquid Turbine Flow Meter is one of the most ideal flow meters for measuring liquids. Liquid Turbine Flow Meter is suitable for measuring low-viscosity media, such as water, diesel, gasoline, etc.
The Liquid Turbine flow sensor can measure the instantaneous flow rate and the total cumulative volume of the liquid, and can also quantitatively control the liquid. Turbine flow meters are velocity flow meters. The principle is to use the relationship between the rotational angular velocity of the impeller placed in the liquid and the liquid flow rate. Calculate the size of the liquid flow by measuring the speed of the impeller. The flow can be displayed on-site and can also be matched with the corresponding flow totalizer.
Sino-Inst offers a variety of Liquid Turbine flow meters for Liquid flow measurement. If you have any questions, please contact our sales engineers.
According to the different output signals, we divide the liquid turbine flowmeter into the following 4 categories.
A. On-site display type
The intelligent flowmeter is a new type of flowmeter display instrument designed with advanced single-chip microcomputer technology, and it is matched with the flow sensor (such as turbine, vortex) with pulse signal output.
Cumulative flow: 8 digits, 3 significant digits after the decimal point.
Instantaneous flow: six digits, can show the change per liter.
Display accuracy: ±1 display unit.
Signal output: pulse output: 1~3000Hz
External power supply +12~+24VDC
Current output: 4~20mA
External +24VDC power supply (two-wire system) built-in 2 3V lithium batteries in parallel for power supply.
When the voltage is lower than 2.7V, there will be an undervoltage indication, explosion-proof type.
Small signal removal function.
B. Pulse output type
Working voltage: +12VDC or +24VDC (the customer must select a power supply before ordering).
Signal transmission distance: less than 250 meters.
Output signal: square wave signal
Amplitude: +12VDC power supply amplitude is about 10V +24VDC power supply amplitude is about 20V
Installation: The connection between amplifier and turbine flow sensor is M16×1.5 thread. After the turbine flow sensor is installed, screw the amplifier to the turbine flow sensor. Tighten the lock nut until you feel the amplifier to the end.
Wiring: The pulse output type amplifier has three external leads, red wire, white wire and shield. The red wire is connected to the positive power supply, the white wire is the pulse output and other display instruments or equipment, and the shield is grounded.
C. 4～20mA output type
Working voltage: external power supply +24VDC (two-wire system)
Output signal: 4~20mA or 1-5V. 4mA corresponds to the zero flow of the turbine flow sensor, and 20mA corresponds to the maximum flow of the turbine flow sensor. See the nameplate of the turbine flow sensor for the flow range.
Signal transmission distance: less than 250 meters.
Installation: After the turbine flow sensor is installed, screw the amplifier to the turbine flow sensor connector (m16×1.5 thread). Tighten the lock nut by hand until you feel the amplifier is at the bottom.
Wiring: The external leads of the 4-20mA output amplifier are red and white wires. The red wire is the power wire and the white wire is the signal wire.
D. Split remote display type
Working voltage: 220VAC from external power supply
Signal transmission distance: less than 250 meters
Instantaneous four digits of the indicator: nine digits for the cumulative total
What liquids can be measured by Liquid Turbine Flow Meters?
In terms of measuring liquid flow, turbine flowmeters should be used in the following areas:
Partially corrosive liquid measurement. Such as sulfuric acid, hydrochloric acid, nitric acid, acetic acid and other acids and various chemical solutions.
Water flow measurement in large-diameter pipes, of which the full-pipe turbine flowmeter is mainly used for small and medium pipe diameters. The plug-in turbine flowmeter can be used for large pipe diameter (DN≥300mm) pipeline flow measurement. It is widely used in urban water pipelines and industrial water main lines of enterprises such as chemical industry, electric power, metallurgy, papermaking, and chemical fiber.
Measurement of non-conductive liquids. If it is said that electromagnetic flowmeters dominate the flow measurement of conductive liquids. In the field of non-conductive liquid flow measurement, electromagnetic flowmeters are powerless. The turbine flowmeter is very useful. Turbine flowmeters with small diameters introduced in recent years are more suitable for applications in this field.
Some turbine flowmeter products use a compression molding process to make the turbine flowmeter sensor into an all-plastic product. Then configure a non-contact ultrasonic detection element to measure the liquid without contact. It can be used for flow measurement of corrosive liquids and high purity liquids.
According to relevant information, in the petrochemical, pharmaceutical, food and semiconductor industries, turbine flowmeters have obtained fruitful applications. For example: methanol, formaldehyde, acetone, toluene, trichloroethylene, ethylene, butane liquid ammonia, etc. There are also pure water for the semiconductor industry, ultra-clean pure water and so on.
In fact, if your measuring medium is conductive liquid, or corrosive conductive liquid, or wastewater. It’s better consider using an electromagnetic flowmeter. Let’s take a quick look.
Gas turbine flowmeter is used to detect instantaneous flow and total integrated flow. Its output signal is frequency, which is easy to digitize.
The induction coil and the permanent magnet are fixed on the housing together. When the ferromagnetic turbine blade passes the magnet, the reluctance of the magnetic circuit changes, thereby generating an induction signal.
The signal is amplified and reshaped by the amplifier and sent to the counter or frequency meter. The total accumulated flow is displayed. At the same time, the pulse frequency undergoes frequency-voltage conversion to indicate instantaneous flow.
The speed of the impeller is proportional to the flow, and the number of revolutions of the impeller is proportional to the total amount of flow. The output of the turbine flowmeter is a frequency modulated signal. It not only improves the anti-interference of the detection circuit, but also simplifies the flow detection system.
The gas turbine flowmeter has a turndown ratio of up to 10:1, and the accuracy is within ±0.2%. The time constant of the turbine flowmeter with small inertia and small size can reach 0.01 second.
Liquid Turbine Flow Meter is a speed type flow meter based on the principle of torque balance.
The fluid flows through the sensor housing. Because the blades of the impeller have a certain angle with the flow direction. The impulse of the fluid makes the blades have a rotational torque. After the friction torque and fluid resistance are overcome, the blades rotate. The speed is stable after the torque is balanced.
Under certain conditions, the speed is proportional to the flow rate.
Due to the magnetic permeability of the blade, it is in the magnetic field of the signal detector (composed of permanent magnets and coils). The rotating blade cuts the magnetic lines of force. The magnetic flux of the coil is periodically changed. Electrical pulse signals are induced at both ends of the coil.
This signal is amplified and reshaped by an amplifier. A continuous rectangular pulse wave with a certain amplitude is formed. It can be transmitted to the display instrument remotely. The instantaneous flow or total amount of the fluid is displayed.
Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow Q of the fluid flowing through the sensor. The flow equation is:
Where: f——Pulse frequency [Hz] k——The meter coefficient of the sensor [1/m3], which is given by the calibration sheet. Q——The instantaneous flow of fluid (under working condition) [m3/h] 3600-conversion factor in seconds
The meter coefficient of each sensor is filled in the verification certificate by the manufacturer. The k value is set in the matching display instrument. The instantaneous flow and cumulative total can be displayed.
Generally, the K factor will not change when the flow rate changes, but it should not exceed the upper limit of the flowmeter too much. The K factor is a constant based on a flow rate under certain process parameters.
How to get k factor on turbine flow meter?
There are two kinds of different manufacturers k: One is k=f/Q, that is, the number of vortices generated per unit flow; The other k=Q/f, that is, the plate flow rate corresponding to each vortex. The k value is calibrated with the right factory water. The sensor measures the vortex number of the instrument and compares it with the volume flow measured by the calibration device to obtain the k value.
D-measuring tube diameter St-Strouhal number, constant within a certain range of Reynolds number d—-The characteristic width of the vortex generator m—The ratio of the arcuate area on both sides of the vortex generator to the cross-sectional area of the pipe
In fact, this formula has no practical meaning for you. The values of d and m are difficult to measure accurately. Therefore, it is difficult to obtain an accurate k value by calculation.
How to Calibrate a Turbine Flow Meter?
Before the turbine flowmeter leaves the factory, the coefficients have been set in the table. When the user requests to display in mass units, the coefficient has been corrected and put into the table according to the medium density provided by the user before leaving the factory. It can be used directly on site. If the physical properties of the measured medium on site differ greatly from those of water, on-site calibration can be performed. Specific steps are as follows:
1. Install the turbine flowmeter as required. Turn on the valve to fill the pipeline with medium to ensure that the meter works normally. Close the valve and prepare for calibration;
2. Prepare a standard container or weighing equipment, and use the weighing method as an example here (record the tare weight);
3. First record the cumulative flow of the turbine flowmeter. Turn on the valve to make the flowmeter work within the flow range. When the container is almost full, close the valve. Record the cumulative flow of the flowmeter. Read the net weight of the measured medium on the scale;
4. Put the newly measured meter coefficient into the table again;
High Pressure Turbine Flow Meter
The high-pressure liquid turbine flowmeter is a special high-pressure flowmeter designed for hydraulic equipment, engineering machinery, chemical and other high-pressure fluid industries. The housing is made of stainless steel. The table structure is simple, and the structure design is optimized. It adopts high pressure butt welding flange clamp or high pressure screw connection structure.
Wide range of applications: High-pressure liquid measurement occasions such as chemical high-pressure pipelines, hydraulic equipment, engineering machinery, and test benches. Hydraulic oil, circulating oil, oil station, construction machinery and other high-pressure liquids.
Sino-Inst recommends that you refer to the following factors to select the flowmeter. 1.Fluid type For clear and mixed liquids, clean gases, and mixed gases, different flow meters are required. For example, liquids are generally suitable for turbine flowmeters, and for gas, vortex flowmeters are more popular. Of course, this is only the choice of most people, not a certain one, and can be chosen according to specific needs. 2.Flow range The fluid flow rate range should be moderate, not exceeding the range of the flowmeter. 3.Pipe size For smaller pipe sizes, rotors, turbines, and mass flow meters are generally used. For large pipe diameters, electromagnetic flowmeters and ultrasonic flowmeters are generally used. Some pipes are not suitable for electromagnetic and ultrasonic applications. 4.Signal output If the signal output is not required, rotameter and mechanical water meter are generally used. The output signal has an analog quantity (4-20mA, 0-10V) and pulse output, these flowmeters can have a digital display. 5.Pressure range Depending on the material of the flowmeter’s wetted parts, the pressure resistance is different, and the pressure resistance range of stainless steel and copper is larger. If the flow rate is relatively low, pressure loss needs to be considered. In this case, turbines and positive displacement flow meters are not suitable.
Water flow meter refers to a flow meter that can measure water flow. The common water flow meter is an electromagnetic flow meter. Of course, it can also be a turbine flowmeter, an ultrasonic flowmeter, etc., as required.
What is target flow meter?
Target flow meter, also called drag force flowmeter. Target flow meter inserts a target (drag element) into the flow field. The traget usually is a flat disc or a sphere with an extension rod. There will be a differential pressure. And then target flow meters measure the drag force on the inserted target and convert it to the flow rate. Sino-Inst manufactures target flow meters for liquid, gas and steam measurement.
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Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
