Electronic circulate meters are industrial digital circulate meters used for fluid move measurement. In many software eventualities, folks usually use electronic flowmeter is electromagnetic flowmeter.
Electronic flowmeter varieties, corresponding to electromagnetic flowmeter, vortex flowmeter and ultrasonic flowmeter. Electronic flowmeter for industrial liquids, water, natural gas, gasoline, gas, air. Electronic flowmeter converts the monitored fluid circulate into an digital signal. This contains pulse signals, 4-20mA commonplace indicators, and so forth.
They usually are not fully digital in nature, however they represent a logical grouping of flow measurement technologies. All of these meters don’t have any moving parts. They operate via extremely sophisticated electronics and circuitry.
Table of Contents
What is an digital flow meter?
Electronic move meter merchandise
Electronic flowmeter types and dealing precept
Electromagnetic move meter
Advantages of utilizing electromagnetic flowmeter
Disadvantages of using electromagnetic flow meters
Vortex circulate meter
Ultrasonic flow meter
Advantages of ultrasonic flowmeters
Disadvantages of ultrasonic move meters
How to decide on your electronic flow meter?
What is an electronic circulate meter?
A flow meter is a device used to measure the volume or mass of a fuel or liquid. Flow meters have many names depending on the particular trade, corresponding to move meters, circulate indicators, liquid meters, circulate sensors, circulate meters, and so forth.
Electronic circulate meters are industrial digital circulate meters used for liquid move measurement. Common kinds of digital circulate meters are electromagnetic, vortex and ultrasonic move meters.
Electromagnetic flowmeters are basically the most simple electrical flowmeters with a primary operating precept derived from Faraday’s Law. Vortex flowmeters depend on piezoelectric sensors to detect vortex currents coming off a set shedding bar. And ultrasonic flowmeters owe their profitable application to stylish digital signal processing.
Electronic move meter merchandise
AYT Digital Liquid Magnetic Flow Meter
Learn More AYT Digital Liquid Magnetic Flow Meter
AFT Split Type Electromagnetic Flow Meter
Learn More AFT Split Type Electromagnetic Flow Meter
ACT Insertion Type Magnetic Flowmeter
Learn More ACT Insertion Type Magnetic Flowmeter
AQT Steam Vortex Flow Meter
Learn More AQT Steam Vortex Flow Meter
TUF Clamp On Ultrasonic Flow Meter
Learn More TUF Clamp On Ultrasonic Flow Meter
MHC Portable Ultrasonic Doppler Flow Meter
Learn More MHC Portable Ultrasonic Doppler Flow Meter
Electronic flowmeter varieties and dealing precept
Simply put, the working principle of electronic flowmeter is to transform the flow price of the measured fluid into an digital sign via the circulate sensor meeting. And could be flow show and sign output. For instance, show instantaneous circulate, cumulative move, and so on. Roughly divided into the following three categories.
Electromagnetic circulate meter
Electromagnetic flow meters work primarily based on Faraday’s principle of electromagnetic induction. Electromagnetic flowmeter is also referred to as only conductive fluid can be utilized.
Magnetic flow meter consists of a non-magnetic pipe lined with an insulating materials. A pair of magnetic coils are positioned at right angles to the move and a pair of electrodes penetrate the pipe and its lining. When electrically conductive fluid flows via the pipe underneath the influence of a specific density magnetic subject generated by the electromagnetic coil, the amount of voltage (E) generated across the electrodes is predicted by Faraday’s regulation to be proportional to velocity (V) proportional to the liquid.
E = KV
Where
E = the quantity of voltage generated on the electrode
V = velocity of the fluid flowing by way of the pipe
K=calibration constant of the meter
Advantages of using electromagnetic flowmeter
High accuracy and stability
Self-checking
Bi-directional measurement
No stress loss
No moving elements
Possible for hygienic functions
Available in giant sizes
Disadvantages of utilizing electromagnetic circulate meters
Cannot be used to measure gases, vapors and liquids containing large quantities of fuel
Can not be used to measure liquid media with very low conductivity Electromagnetic flowmeter can’t measure media corresponding to petroleum products or organic solvents
Can not be used to measure excessive temperature media. Currently restricted by the general industrial electromagnetic flowmeter measuring tube lining supplies and electrical insulation supplies.
Electromagnetic flowmeter is susceptible to the affect of exterior electromagnetic interference.
Vortex circulate meter
Vortex circulate meters are sometimes manufactured from 316 stainless steel or Hastelloy and embody a blunt physique, a vortex sensor assembly, and transmitter electronics. When a non-streamlined object (also referred to as an obtuse body) is placed in the path of a high Reynolds quantity move, the fluid will alternately separate from the item on its downstream sides and, as As the boundary layer separates and coils back on itself, the fluid forms vortices. These vortices end in areas of stress fluctuations detected by piezoelectric or capacitive sensors. Fluid velocity is dependent upon the frequency of the generated vortices and the Strouhal number and is given by the next equation
V = (fxh)/S
Where
V = common velocity of the fluid flow
f = frequency of the generated vortex
h = width of the obtuse body
S = variety of Strouhal
S varies with Reynolds number; nevertheless, it’s virtually constant over a variety of flow charges.
In practice, a k-factor representing the number of vortices generated per unit volume is used as a substitute of S. Thus the volumetric circulate fee is
Q = f/K
Vortex circulate meters are not sometimes really helpful for dosing or different intermittent circulate functions. This is as a result of the drip move setting of the dosing station could additionally be below the minimum Reynolds number limit of the meter. The smaller the entire batch, the more important the ensuing error could also be.
Low pressure (low density) gases will not generate sturdy sufficient stress pulses, particularly at low fluid velocities. Therefore, in this kind of service, the gauge is prone to have a poor vary and will not be able to measure low move charges. On the other hand, if the decreased vary is acceptable and the meter is sized for regular move, then a vortex flowmeter should be thought-about.
The everlasting strain loss via the vortex flowmeter is about half that of an orifice flowmeter with about two velocity heads. (Velocity head is outlined as V2/g, where V is the flow rate and g is the gravitational fixed in consistent models.) If the piping and instrumentation are properly sized and similar, the pressure drop may be only some kilos per square inch. However, downsizing (installing smaller than line measurement gauges) to increase the Reynolds quantity can improve the pinnacle loss to greater than 10 psi. It is also essential to guarantee that the shrink stress just isn’t lower than the vapor pressure of the process fluid, as this will lead to cavitation. Naturally, if the again pressure on the meter is lower than the steam strain, the method fluid will flash and the meter reading might be meaningless.
The primary benefits of vortex circulate meters are their low sensitivity to changes in process conditions and low wear relative to orifice or turbine flowmeters. In addition, initial and upkeep costs are very low. For these reasons, they’ve gained wider acceptance amongst customers.
Ultrasonic circulate meter
The velocity of sound propagation in a fluid depends on the density of the fluid. However, if the density is constant, the time of passage (or reflection) of ultrasound can be used to determine the rate of the flowing fluid.
Ultrasonic move meters measure fluid velocity by transmitting high-frequency sound waves alongside the fluid circulate path. Fluid movement affects the propagation of those sound waves, which may then be Then it might be measured to deduce the fluid velocity. There are two major types of ultrasonic flowmeters: Doppler and transmission time. Both kinds of ultrasonic flowmeters work by transmitting Both kinds of ultrasonic move meters work by transmitting high-frequency sound waves into the fluid stream (incident pulse) and analyzing the acquired pulses.
Doppler flow meters make the most of the Doppler effect, which is a frequency shift attributable to waves emitted or mirrored from a moving object. diaphragm seal reflect sound waves from bubbles or particles in the air stream Particulate materials in the reflection of sound waves, measuring the frequency shift and inferring the fluid velocity and thus the move fee primarily based on the magnitude of that frequency shift.
In the design of a transit time ultrasonic flowmeter, the time of flight of the ultrasonic signal is measured between two transducers, one upstream and one downstream. With flow or The difference in time spent against the flow determines the fluid velocity from which the circulate price is inferred.
Advantages of ultrasonic flowmeters
The electronics in the ultrasonic flowmeter include an ultrasonic flowmeter detector that compensates and adapts to changes in fluid distribution, fluid type and pipe materials.
Portable ultrasonic flowmeter converters can be used as a direct technique of effectively figuring out move compared to other flow techniques.
Compared to other mechanical circulate meters, ultrasonic move meter converters are cheap to use and preserve because they have no shifting elements in these move meters.
They are designed to be very precise and don’t impede the move of liquids, so they can be used for sanitary, corrosive and abrasive liquids.
Disadvantages of ultrasonic circulate meters
The primary drawback of ultrasonic flowmeters is value. Compared to other forms of mechanical move meters, circulate meters are very pricey .
Compared to mechanical move meters, ultrasonic move meters are more complex and due to this fact require experts to restore and keep the circulate meters.
How to determine on your electronic flow meter?
The essential elements when selecting a right move meter system are
Media to be measured
Accuracy
Cost
Flow vary
Operating requirements
Maintenance
Lifetime
Delivery time
These components are kind of interrelated. For instance – the cost of a circulate meter will increase with accuracy and high quality of life. Flowmeter calibration and maintenance are additionally necessary to contemplate.
More articles on flowmeters:
Chilled water move meter
Ultrasonic circulate meter working precept
Difference between move meter and move transmitter
Working precept of rotameter
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Electronic flow meters are industrial digital flow meters used for fluid flow measurement. In many utility scenarios, people often use electronic flowmeter is electromagnetic flowmeter.
Electronic flowmeter sorts, similar to electromagnetic flowmeter, vortex flowmeter and ultrasonic flowmeter. Electronic flowmeter for industrial liquids, water, pure gasoline, gasoline, gas, air. Electronic flowmeter converts the monitored fluid move into an electronic signal. This contains pulse indicators, 4-20mA standard signals, and so on.
They are not absolutely digital in nature, but they represent a logical grouping of move measurement technologies. All of these meters have no shifting components. They function through extremely subtle electronics and circuitry.
Table of Contents
What is an electronic flow meter?
Electronic move meter products
Electronic flowmeter varieties and dealing principle
Electromagnetic flow meter
Advantages of utilizing electromagnetic flowmeter
Disadvantages of using electromagnetic move meters
Vortex circulate meter
Ultrasonic flow meter
Advantages of ultrasonic flowmeters
Disadvantages of ultrasonic flow meters
How to choose your electronic circulate meter?
What is an digital circulate meter?
A move meter is a device used to measure the volume or mass of a gas or liquid. Flow meters have many names relying on the specific trade, such as flow meters, flow indicators, liquid meters, circulate sensors, flow meters, and so forth.
Electronic flow meters are industrial digital circulate meters used for liquid move measurement. Common kinds of digital circulate meters are electromagnetic, vortex and ultrasonic flow meters.
Electromagnetic flowmeters are primarily essentially the most straightforward electrical flowmeters with a primary operating principle derived from Faraday’s Law. Vortex flowmeters rely on piezoelectric sensors to detect vortex currents coming off a fixed shedding bar. And ultrasonic flowmeters owe their successful application to stylish digital signal processing.
Electronic move meter merchandise
AYT Digital Liquid Magnetic Flow Meter
Learn More AYT Digital Liquid Magnetic Flow Meter
AFT Split Type Electromagnetic Flow Meter
Learn More AFT Split Type Electromagnetic Flow Meter
ACT Insertion Type Magnetic Flowmeter
Learn More ACT Insertion Type Magnetic Flowmeter
AQT Steam Vortex Flow Meter
Learn More AQT Steam Vortex Flow Meter
TUF Clamp On Ultrasonic Flow Meter
Learn More TUF Clamp On Ultrasonic Flow Meter
MHC Portable Ultrasonic Doppler Flow Meter
Learn More MHC Portable Ultrasonic Doppler Flow Meter
Electronic flowmeter sorts and dealing principle
Simply put, the working precept of digital flowmeter is to convert the flow price of the measured fluid into an electronic sign by way of the circulate sensor assembly. And may be circulate show and sign output. For example, show instantaneous move, cumulative circulate, and so forth. Roughly divided into the following 3 categories.
Electromagnetic circulate meter
Electromagnetic circulate meters work based on Faraday’s principle of electromagnetic induction. Electromagnetic flowmeter is also identified as only conductive fluid can be used.
Magnetic flow meter consists of a non-magnetic pipe lined with an insulating materials. A pair of magnetic coils are positioned at right angles to the flow and a pair of electrodes penetrate the pipe and its lining. When electrically conductive fluid flows by way of the pipe under the affect of a selected density magnetic area generated by the electromagnetic coil, the amount of voltage (E) generated throughout the electrodes is predicted by Faraday’s regulation to be proportional to velocity (V) proportional to the liquid.
E = KV
Where
E = the quantity of voltage generated on the electrode
V = velocity of the fluid flowing through the pipe
K=calibration fixed of the meter
Advantages of utilizing electromagnetic flowmeter
High accuracy and stability
Self-checking
Bi-directional measurement
No pressure loss
No shifting parts
Possible for hygienic purposes
Available in massive sizes
Disadvantages of utilizing electromagnetic move meters
Cannot be used to measure gases, vapors and liquids containing massive quantities of fuel
Can not be used to measure liquid media with very low conductivity Electromagnetic flowmeter can not measure media corresponding to petroleum merchandise or natural solvents
Can not be used to measure high temperature media. Currently restricted by the final industrial electromagnetic flowmeter measuring tube lining supplies and electrical insulation materials.
Electromagnetic flowmeter is susceptible to the affect of external electromagnetic interference.
Vortex circulate meter
Vortex circulate meters are usually manufactured from 316 stainless steel or Hastelloy and include a blunt body, a vortex sensor assembly, and transmitter electronics. When a non-streamlined object (also referred to as an obtuse body) is placed within the path of a excessive Reynolds quantity move, the fluid will alternately separate from the object on its downstream sides and, as As the boundary layer separates and coils back on itself, the fluid types vortices. These vortices end in areas of stress fluctuations detected by piezoelectric or capacitive sensors. Fluid velocity is dependent upon the frequency of the generated vortices and the Strouhal number and is given by the following equation
V = (fxh)/S
Where
V = common velocity of the fluid flow
f = frequency of the generated vortex
h = width of the obtuse body
S = number of Strouhal
S varies with Reynolds number; nonetheless, it is virtually constant over a broad range of circulate charges.
In pressure gauge , a k-factor representing the variety of vortices generated per unit quantity is used instead of S. Thus the volumetric move price is
Q = f/K
Vortex flow meters usually are not sometimes beneficial for dosing or different intermittent flow purposes. This is because the drip circulate setting of the dosing station could also be under the minimum Reynolds number restrict of the meter. The smaller the total batch, the extra significant the resulting error could additionally be.
Low pressure (low density) gases will not generate strong sufficient stress pulses, particularly at low fluid velocities. Therefore, in this kind of service, the gauge is likely to have a poor vary and will be unable to measure low move rates. On the opposite hand, if the reduced vary is suitable and the meter is sized for regular flow, then a vortex flowmeter should be thought of.
The permanent strain loss through the vortex flowmeter is about half that of an orifice flowmeter with about two velocity heads. (Velocity head is outlined as V2/g, the place V is the flow fee and g is the gravitational fixed in constant units.) If the piping and instrumentation are correctly sized and equivalent, the pressure drop may be only a few pounds per sq. inch. However, downsizing (installing smaller than line measurement gauges) to increase the Reynolds quantity can improve the head loss to greater than 10 psi. It is also important to make certain that the shrink strain just isn’t decrease than the vapor stress of the process fluid, as this will result in cavitation. Naturally, if the again strain on the meter is lower than the steam stress, the method fluid will flash and the meter reading might be meaningless.
The primary advantages of vortex move meters are their low sensitivity to changes in course of conditions and low wear relative to orifice or turbine flowmeters. In addition, preliminary and maintenance costs are very low. For these reasons, they’ve gained wider acceptance among customers.
Ultrasonic flow meter
The speed of sound propagation in a fluid is determined by the density of the fluid. However, if the density is fixed, the time of passage (or reflection) of ultrasound can be used to discover out the speed of the flowing fluid.
Ultrasonic move meters measure fluid velocity by transmitting high-frequency sound waves along the fluid flow path. Fluid movement impacts the propagation of those sound waves, which might then be Then it might be measured to infer the fluid velocity. There are two main kinds of ultrasonic flowmeters: Doppler and transmission time. Both types of ultrasonic flowmeters work by transmitting Both kinds of ultrasonic circulate meters work by transmitting high-frequency sound waves into the fluid stream (incident pulse) and analyzing the received pulses.
Doppler move meters utilize the Doppler effect, which is a frequency shift attributable to waves emitted or mirrored from a transferring object. Doppler circulate meters reflect sound waves from bubbles or particles within the air stream Particulate materials in the reflection of sound waves, measuring the frequency shift and inferring the fluid velocity and thus the move price based on the magnitude of that frequency shift.
In the design of a transit time ultrasonic flowmeter, the time of flight of the ultrasonic sign is measured between two transducers, one upstream and one downstream. With circulate or The distinction in time spent against the circulate determines the fluid velocity from which the flow rate is inferred.
Advantages of ultrasonic flowmeters
The electronics within the ultrasonic flowmeter embrace an ultrasonic flowmeter detector that compensates and adapts to adjustments in fluid distribution, fluid type and pipe material.
Portable ultrasonic flowmeter converters can be used as a direct methodology of effectively determining circulate compared to different move methods.
Compared to other mechanical flow meters, ultrasonic flow meter converters are cheap to make use of and keep as a outcome of they have no shifting elements in these move meters.
They are designed to be very exact and do not impede the move of liquids, so they can be used for sanitary, corrosive and abrasive liquids.
Disadvantages of ultrasonic circulate meters
The main drawback of ultrasonic flowmeters is cost. Compared to other kinds of mechanical flow meters, circulate meters are very pricey .
Compared to mechanical move meters, ultrasonic flow meters are extra advanced and therefore require experts to restore and preserve the flow meters.
How to choose your electronic circulate meter?
diaphragm seal when selecting a proper flow meter system are
Media to be measured
Accuracy
Cost
Flow range
Operating necessities
Maintenance
Lifetime
Delivery time
These elements are roughly interrelated. For example – the price of a flow meter increases with accuracy and quality of life. Flowmeter calibration and maintenance are also essential to contemplate.
More articles on flowmeters:
Chilled water move meter
Ultrasonic flow meter working principle
Difference between move meter and flow transmitter
Working principle of rotameter