Electronic circulate meters are industrial digital move meters used for fluid move measurement. In many application scenarios, folks typically use electronic flowmeter is electromagnetic flowmeter.
Electronic flowmeter varieties, similar to electromagnetic flowmeter, vortex flowmeter and ultrasonic flowmeter. Electronic flowmeter for industrial liquids, water, natural fuel, gasoline, gasoline, air. Electronic flowmeter converts the monitored fluid flow into an digital signal. This consists of pulse indicators, 4-20mA standard signals, and so on.
They aren’t fully electronic in nature, but they represent a logical grouping of flow measurement applied sciences. All of those meters have no transferring elements. They operate through highly subtle electronics and circuitry.
Table of Contents
What is an electronic circulate meter?
Electronic flow meter merchandise
Electronic flowmeter sorts and dealing principle
Electromagnetic flow meter
Advantages of utilizing electromagnetic flowmeter
Disadvantages of using electromagnetic circulate meters
Vortex flow meter
Ultrasonic move meter
Advantages of ultrasonic flowmeters
Disadvantages of ultrasonic circulate meters
How to choose your electronic flow meter?
What is an electronic flow meter?
A flow meter is a device used to measure the amount or mass of a fuel or liquid. Flow meters have many names relying on the particular industry, similar to circulate meters, flow indicators, liquid meters, move sensors, flow meters, etc.
Electronic flow meters are industrial digital circulate meters used for liquid move measurement. Common forms of digital flow meters are electromagnetic, vortex and ultrasonic circulate meters.
Electromagnetic flowmeters are essentially essentially the most straightforward electrical flowmeters with a first working precept derived from Faraday’s Law. Vortex flowmeters rely on piezoelectric sensors to detect vortex currents coming off a hard and fast shedding bar. And ultrasonic flowmeters owe their successful software to classy digital sign 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 types and working principle
Simply put, the working principle of electronic flowmeter is to convert the circulate fee of the measured fluid into an electronic signal via the flow sensor assembly. And can be move show and sign output. For example, show instantaneous move, cumulative move, and so on. Roughly divided into the following 3 classes.
Electromagnetic move meter
Electromagnetic circulate meters work primarily based on Faraday’s principle of electromagnetic induction. Electromagnetic flowmeter is also called solely conductive fluid can be utilized.
Magnetic move meter consists of a non-magnetic pipe lined with an insulating materials. A pair of magnetic coils are positioned at proper angles to the flow and a pair of electrodes penetrate the pipe and its lining. When electrically conductive fluid flows through the pipe underneath the influence of a specific density magnetic field generated by the electromagnetic coil, the quantity of voltage (E) generated across the electrodes is predicted by Faraday’s legislation to be proportional to velocity (V) proportional to the liquid.
E = KV
Where
E = the amount of voltage generated on the electrode
V = velocity of the fluid flowing by way of the pipe
K=calibration fixed of the meter
Advantages of utilizing electromagnetic flowmeter
High accuracy and stability
Self-checking
Bi-directional measurement
No stress loss
No transferring parts
Possible for hygienic purposes
Available in massive sizes
Disadvantages of utilizing electromagnetic flow meters
Cannot be used to measure gases, vapors and liquids containing massive quantities of gasoline
Can not be used to measure liquid media with very low conductivity Electromagnetic flowmeter cannot measure media similar to petroleum merchandise or organic solvents
Can not be used to measure high temperature media. Currently restricted by the overall industrial electromagnetic flowmeter measuring tube lining materials and electrical insulation supplies.
Electromagnetic flowmeter is vulnerable to the influence of exterior electromagnetic interference.
Vortex flow meter
Vortex flow meters are usually made of 316 chrome steel or Hastelloy and include a blunt physique, a vortex sensor assembly, and transmitter electronics. When a non-streamlined object (also known as an obtuse body) is positioned within the path of a excessive Reynolds number circulate, the fluid will alternately separate from the object on its downstream sides and, as As the boundary layer separates and coils again on itself, the fluid forms vortices. These vortices end in areas of stress fluctuations detected by piezoelectric or capacitive sensors. Fluid velocity depends on the frequency of the generated vortices and the Strouhal quantity and is given by the next equation
V = (fxh)/S
Where
V = average velocity of the fluid circulate
f = frequency of the generated vortex
h = width of the obtuse physique
S = number of Strouhal
S varies with Reynolds number; nevertheless, it is almost fixed over a variety of flow rates.
In apply, a k-factor representing the number of vortices generated per unit quantity is used as a substitute of S. Thus the volumetric move price is
Q = f/K
Vortex flow meters are not usually really helpful for dosing or different intermittent flow applications. This is because the drip flow setting of the dosing station may be below the minimal Reynolds quantity limit of the meter. The smaller the whole batch, the more important the resulting error may be.
Low stress (low density) gases is not going to generate robust enough pressure pulses, particularly at low fluid velocities. Therefore, in this kind of service, the gauge is prone to have a poor vary and won’t be able to measure low move charges. On the other hand, if the lowered range is suitable and the meter is sized for regular circulate, then a vortex flowmeter should be thought-about.
The permanent stress loss by way of the vortex flowmeter is about half that of an orifice flowmeter with about two velocity heads. (Velocity head is defined as V2/g, where V is the move fee and g is the gravitational fixed in constant units.) If the piping and instrumentation are correctly sized and equivalent, the stress drop could additionally be only a few kilos per sq. inch. However, downsizing (installing smaller than line dimension gauges) to increase the Reynolds quantity can enhance the pinnacle loss to greater than 10 psi. It can additionally be necessary to make certain that the shrink pressure isn’t lower than the vapor stress of the process fluid, as this will lead to cavitation. Naturally, if the again pressure on the meter is decrease than the steam strain, the process fluid will flash and the meter reading shall be meaningless.
The major advantages of vortex flow meters are their low sensitivity to modifications in course of situations and low put on relative to orifice or turbine flowmeters. In addition, preliminary and maintenance prices are very low. For these reasons, they’ve gained wider acceptance among customers.
Ultrasonic flow meter
The pace of sound propagation in a fluid is determined by the density of the fluid. However, if the density is constant, the time of passage (or reflection) of ultrasound can be used to find out the velocity 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 these sound waves, which can then be Then it might be measured to infer the fluid velocity. There are pressure gauge octa of ultrasonic flowmeters: Doppler and transmission time. Both forms of ultrasonic flowmeters work by transmitting Both types of ultrasonic flow meters work by transmitting high-frequency sound waves into the fluid stream (incident pulse) and analyzing the received pulses.
Doppler flow meters make the most of the Doppler effect, which is a frequency shift caused by waves emitted or mirrored from a transferring object. Doppler circulate meters reflect sound waves from bubbles or particles in the air stream Particulate materials within the reflection of sound waves, measuring the frequency shift and inferring the fluid velocity and thus the flow rate 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 towards the flow determines the fluid velocity from which the flow rate 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 kind and pipe material.
Portable ultrasonic flowmeter converters can be used as a direct method of effectively determining move compared to different move methods.
Compared to different mechanical flow meters, ultrasonic move meter converters are cheap to use and preserve because they haven’t any moving parts in these flow meters.
They are designed to be very exact and do not impede the circulate of liquids, so they can be used for sanitary, corrosive and abrasive liquids.
Disadvantages of ultrasonic flow meters
The primary drawback of ultrasonic flowmeters is value. Compared to other kinds of mechanical circulate meters, flow meters are very expensive .
Compared to mechanical circulate meters, ultrasonic circulate meters are extra complicated and therefore require consultants to repair and preserve the circulate meters.
How to choose your digital flow meter?
The important components when choosing a proper move meter system are
Media to be measured
Accuracy
Cost
Flow range
Operating requirements
Maintenance
Lifetime
Delivery time
These factors are roughly interrelated. For instance – the worth of a move meter will increase with accuracy and quality of life. Flowmeter calibration and upkeep are also necessary to contemplate.
More articles on flowmeters:
Chilled water flow meter
Ultrasonic flow meter working principle
Difference between circulate meter and flow transmitter
Working precept of rotameter
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Electronic circulate meters are industrial digital circulate meters used for fluid circulate measurement. In many application situations, people usually use digital flowmeter is electromagnetic flowmeter.
Electronic flowmeter varieties, such as electromagnetic flowmeter, vortex flowmeter and ultrasonic flowmeter. Electronic flowmeter for industrial liquids, water, natural fuel, gasoline, gasoline, air. Electronic flowmeter converts the monitored fluid flow into an digital signal. This includes pulse signals, 4-20mA standard indicators, and so forth.
They aren’t fully electronic in nature, however they symbolize a logical grouping of circulate measurement applied sciences. All of these meters haven’t any moving parts. They perform by way of highly subtle electronics and circuitry.
Table of Contents
What is an digital move meter?
Electronic move meter merchandise
Electronic flowmeter varieties and dealing principle
Electromagnetic move meter
Advantages of using electromagnetic flowmeter
Disadvantages of utilizing electromagnetic move meters
Vortex circulate meter
Ultrasonic move meter
Advantages of ultrasonic flowmeters
Disadvantages of ultrasonic flow meters
How to choose on your electronic flow meter?
What is an digital flow meter?
A flow meter is a device used to measure the volume or mass of a fuel or liquid. Flow meters have many names relying on the specific industry, corresponding to move meters, flow indicators, liquid meters, move sensors, move meters, and so on.
Electronic circulate meters are industrial digital flow meters used for liquid move measurement. Common kinds of digital move meters are electromagnetic, vortex and ultrasonic circulate meters.
Electromagnetic flowmeters are basically probably the most simple electrical flowmeters with a first working precept derived from Faraday’s Law. Vortex flowmeters depend on piezoelectric sensors to detect vortex currents coming off a exhausting and fast shedding bar. And ultrasonic flowmeters owe their profitable software to classy digital sign 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 types and dealing principle
Simply put, the working principle of digital flowmeter is to transform the flow fee of the measured fluid into an electronic sign by way of the move sensor meeting. And could be move show and sign output. For example, show instantaneous move, cumulative flow, etc. Roughly divided into the following three classes.
Electromagnetic move meter
Electromagnetic move meters work based on Faraday’s principle of electromagnetic induction. Electromagnetic flowmeter is also known as solely conductive fluid can be utilized.
Magnetic move meter consists of a non-magnetic pipe lined with an insulating materials. A pair of magnetic coils are positioned at right angles to the circulate and a pair of electrodes penetrate the pipe and its lining. When electrically conductive fluid flows by way of 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 law to be proportional to velocity (V) proportional to the liquid.
E = KV
Where
E = the amount of voltage generated on the electrode
V = velocity of the fluid flowing via the pipe
K=calibration constant of the meter
Advantages of utilizing electromagnetic flowmeter
High accuracy and stability
Self-checking
Bi-directional measurement
No strain loss
No transferring elements
Possible for hygienic functions
Available in giant sizes
Disadvantages of using electromagnetic move meters
Cannot be used to measure gases, vapors and liquids containing massive amounts of gas
Can not be used to measure liquid media with very low conductivity Electromagnetic flowmeter can’t measure media such as petroleum products or natural solvents
Can not be used to measure high temperature media. Currently restricted by the overall industrial electromagnetic flowmeter measuring tube lining materials and electrical insulation supplies.
Electromagnetic flowmeter is vulnerable to the affect of exterior electromagnetic interference.
Vortex flow meter
Vortex flow meters are typically made from 316 stainless-steel or Hastelloy and embody a blunt physique, a vortex sensor meeting, and transmitter electronics. When a non-streamlined object (also referred to as an obtuse body) is positioned in the path of a high Reynolds quantity flow, 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 types vortices. These vortices lead to areas of strain fluctuations detected by piezoelectric or capacitive sensors. Fluid velocity depends on the frequency of the generated vortices and the Strouhal quantity and is given by the following equation
V = (fxh)/S
Where
V = common velocity of the fluid move
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 fixed over a wide range of move rates.
In apply, a k-factor representing the number of vortices generated per unit quantity is used as an alternative of S. Thus the volumetric circulate price is
Q = f/K
Vortex circulate meters usually are not sometimes beneficial for dosing or other intermittent circulate functions. This is as a outcome of the drip flow setting of the dosing station may be under the minimal Reynolds number restrict of the meter. The smaller the whole batch, the extra significant the ensuing error may be.
Low pressure (low density) gases will not generate sturdy sufficient strain pulses, particularly at low fluid velocities. Therefore, in this sort of service, the gauge is likely to have a poor vary and won’t be able to measure low circulate rates. On the other hand, if the decreased range is acceptable and the meter is sized for normal move, then a vortex flowmeter should still be thought of.
The everlasting pressure loss by way of 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 circulate rate and g is the gravitational constant in constant items.) If the piping and instrumentation are correctly sized and equivalent, the stress drop could also be only a few pounds per square inch. However, downsizing (installing smaller than line measurement gauges) to extend the Reynolds number can enhance the pinnacle loss to more than 10 psi. It can additionally be important to ensure that the shrink stress isn’t lower than the vapor stress of the method fluid, as this could lead to cavitation. Naturally, if the back stress on the meter is lower than the steam strain, the process fluid will flash and the meter reading shall be meaningless.
The main advantages of vortex circulate meters are their low sensitivity to modifications in process situations and low wear relative to orifice or turbine flowmeters. In addition, preliminary and upkeep costs are very low. For these reasons, they have gained wider acceptance amongst customers.
Ultrasonic flow meter
The pace of sound propagation in a fluid is dependent upon the density of the fluid. However, if the density is constant, the time of passage (or reflection) of ultrasound can be utilized to determine the speed of the flowing fluid.
Ultrasonic flow meters measure fluid velocity by transmitting high-frequency sound waves alongside the fluid circulate path. Fluid movement impacts the propagation of these sound waves, which can then be Then it can be measured to infer the fluid velocity. There are two major types of ultrasonic flowmeters: Doppler and transmission time. Both types of ultrasonic flowmeters work by transmitting Both forms 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 brought on by waves emitted or reflected from a transferring object. Doppler circulate meters reflect sound waves from bubbles or particles within the air stream Particulate material in the reflection of sound waves, measuring the frequency shift and inferring the fluid velocity and thus the flow price based mostly 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 move or The difference in time spent towards the flow determines the fluid velocity from which the flow fee is inferred.
Advantages of ultrasonic flowmeters
The electronics within the ultrasonic flowmeter embrace an ultrasonic flowmeter detector that compensates and adapts to modifications in fluid distribution, fluid kind and pipe materials.
Portable ultrasonic flowmeter converters can be utilized as a direct methodology of successfully figuring out move compared to other circulate techniques.
Compared to other mechanical circulate meters, ultrasonic move meter converters are inexpensive to use and keep because they haven’t any moving components in these move meters.
They are designed to be very precise and don’t impede the flow of liquids, so they can be used for sanitary, corrosive and abrasive liquids.
Disadvantages of ultrasonic move meters
The primary drawback of ultrasonic flowmeters is value. Compared to other types of mechanical flow meters, flow meters are very pricey .
Compared to mechanical move meters, ultrasonic move meters are extra advanced and therefore require experts to repair and keep the circulate meters.
How to determine on your digital flow meter?
The essential factors when choosing a right flow meter gadget are
Media to be measured
Accuracy
Cost
Flow range
Operating requirements
Maintenance
Lifetime
Delivery time
These factors are roughly interrelated. For example – the value of a move meter increases with accuracy and quality of life. Flowmeter calibration and maintenance are also necessary to suppose about.
More articles on flowmeters:
Chilled water move meter
Ultrasonic circulate meter working principle
Difference between circulate meter and circulate transmitter
Working precept of rotameter