Electronic move meters are industrial digital circulate meters used for fluid circulate measurement. In many utility eventualities, folks typically use digital flowmeter is electromagnetic flowmeter.
Electronic flowmeter varieties, corresponding to electromagnetic flowmeter, vortex flowmeter and ultrasonic flowmeter. Electronic flowmeter for industrial liquids, water, pure gasoline, gasoline, gasoline, air. Electronic flowmeter converts the monitored fluid circulate into an electronic sign. This consists of pulse signals, 4-20mA normal alerts, and so on.
They are not totally electronic in nature, but they symbolize a logical grouping of circulate measurement applied sciences. All of these meters haven’t any transferring elements. They function via extremely refined electronics and circuitry.
Table of Contents
What is an digital move meter?
Electronic flow meter products
Electronic flowmeter sorts and working precept
Electromagnetic circulate meter
Advantages of using electromagnetic flowmeter
Disadvantages of utilizing electromagnetic move meters
Vortex flow meter
Ultrasonic move meter
Advantages of ultrasonic flowmeters
Disadvantages of ultrasonic move meters
How to determine on your electronic circulate meter?
What is an electronic flow meter?
A flow meter is a tool used to measure the volume or mass of a gasoline or liquid. Flow meters have many names depending on the particular business, corresponding to flow meters, move indicators, liquid meters, flow sensors, circulate meters, etc.
Electronic flow meters are industrial digital move meters used for liquid move measurement. Common forms of digital flow meters are electromagnetic, vortex and ultrasonic flow meters.
Electromagnetic flowmeters are primarily the most straightforward electrical flowmeters with a first operating precept derived from Faraday’s Law. Vortex flowmeters depend on piezoelectric sensors to detect vortex currents coming off a fixed shedding bar. And ultrasonic flowmeters owe their profitable application to stylish digital sign processing.
Electronic circulate 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 working principle
Simply put, the working precept of digital flowmeter is to transform the move rate of the measured fluid into an electronic signal through the move sensor assembly. And could be flow display and signal output. For example, display instantaneous move, cumulative move, and so forth. Roughly divided into the following three categories.
Electromagnetic move meter
Electromagnetic move meters work primarily based on Faraday’s principle of electromagnetic induction. Electromagnetic flowmeter is also recognized as solely conductive fluid can be used.
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 circulate and a pair of electrodes penetrate the pipe and its lining. When electrically conductive fluid flows by way of the pipe beneath the affect of a specific density magnetic subject 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 amount of voltage generated at the electrode
V = velocity of the fluid flowing through the pipe
K=calibration fixed of the meter
Advantages of using electromagnetic flowmeter
High accuracy and stability
Self-checking
Bi-directional measurement
No stress loss
No transferring parts
Possible for hygienic functions
Available in large sizes
Disadvantages of using electromagnetic circulate meters
Cannot be used to measure gases, vapors and liquids containing large amounts of fuel
Can not be used to measure liquid media with very low conductivity Electromagnetic flowmeter can’t measure media corresponding to petroleum merchandise or organic solvents
Can not be used to measure excessive temperature media. Currently restricted by the overall industrial electromagnetic flowmeter measuring tube lining supplies and electrical insulation supplies.
Electromagnetic flowmeter is susceptible to the affect of external electromagnetic interference.
Vortex flow meter
Vortex circulate meters are usually 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 within the path of a high Reynolds quantity flow, 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 lead to areas of pressure fluctuations detected by piezoelectric or capacitive sensors. Fluid velocity is determined by 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 circulate
f = frequency of the generated vortex
h = width of the obtuse body
S = number of Strouhal
S varies with Reynolds number; however, it is nearly fixed over a variety of flow rates.
In follow, a k-factor representing the variety of vortices generated per unit volume is used instead of S. Thus the volumetric move fee is
Q = f/K
Vortex flow meters aren’t typically really helpful for dosing or other intermittent circulate applications. This is as a outcome of the drip move setting of the dosing station could additionally be under the minimum Reynolds quantity limit of the meter. The smaller the total batch, the more significant the ensuing error could also be.
Low strain (low density) gases will not generate strong sufficient stress pulses, particularly at low fluid velocities. Therefore, in this type of service, the gauge is likely to have a poor vary and will be unable to measure low flow charges. On the opposite hand, if the reduced range is suitable and the meter is sized for regular flow, then a vortex flowmeter may still be thought-about.
The permanent stress 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, where V is the move price and g is the gravitational fixed in constant units.) If the piping and instrumentation are properly sized and similar, the strain drop may be only some pounds per sq. inch. However, downsizing (installing smaller than line size gauges) to extend the Reynolds number can improve the top loss to more than 10 psi. It can be essential to make certain that the shrink stress just isn’t decrease than the vapor stress of the method fluid, as this could result in cavitation. Naturally, if the back pressure on the meter is lower than the steam pressure, the process fluid will flash and the meter studying will 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, initial and maintenance costs are very low. For these causes, they’ve 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 used to determine the velocity of the flowing fluid.
Ultrasonic circulate meters measure fluid velocity by transmitting high-frequency sound waves alongside the fluid circulate path. Fluid motion impacts the propagation of these sound waves, which may then be Then it may be measured to deduce the fluid velocity. There are two main forms of ultrasonic flowmeters: Doppler and transmission time. Both types of ultrasonic flowmeters work by transmitting Both types of ultrasonic circulate meters work by transmitting high-frequency sound waves into the fluid stream (incident pulse) and analyzing the obtained pulses.
Doppler circulate meters make the most of the Doppler impact, which is a frequency shift attributable to waves emitted or reflected from a transferring object. Doppler move meters mirror sound waves from bubbles or particles within the air stream Particulate material within the reflection of sound waves, measuring the frequency shift and inferring the fluid velocity and thus the move rate 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 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 move fee is inferred.
Advantages of ultrasonic flowmeters
The electronics in the ultrasonic flowmeter embody an ultrasonic flowmeter detector that compensates and adapts to changes in fluid distribution, fluid sort and pipe material.
Portable ultrasonic flowmeter converters can be used as a direct technique of successfully figuring out move in comparison with other flow systems.
Compared to different mechanical move meters, ultrasonic flow meter converters are inexpensive to use and keep because they don’t have any shifting components in these move meters.
They are designed to be very exact and don’t impede the circulate 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 forms of mechanical flow meters, flow meters are very expensive .
Compared to mechanical circulate meters, ultrasonic move meters are more complex and therefore require experts to restore and keep the flow meters.
How to choose your digital circulate meter?
The essential elements when choosing a right flow meter device are
Media to be measured
Accuracy
Cost
Flow vary
Operating necessities
Maintenance
Lifetime
Delivery time
These components are roughly interrelated. For example – the price of a flow meter will increase with accuracy and quality of life. Flowmeter calibration and upkeep are also essential to suppose about.
More articles on flowmeters:
Chilled water move meter
Ultrasonic move meter working principle
Difference between flow meter and circulate transmitter
Working principle of rotameter
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Electronic circulate meters are industrial digital flow meters used for fluid circulate measurement. In many software scenarios, people often 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 gas, gasoline, fuel, air. Electronic flowmeter converts the monitored fluid flow into an digital signal. This consists of pulse signals, 4-20mA standard alerts, and so forth.
They usually are not totally digital in nature, however they symbolize a logical grouping of circulate measurement technologies. All of these meters have no shifting components. They perform through highly sophisticated electronics and circuitry.
Table of Contents
What is an electronic move meter?
Electronic flow meter products
Electronic flowmeter types and dealing principle
Electromagnetic circulate meter
Advantages of using electromagnetic flowmeter
Disadvantages of utilizing electromagnetic circulate meters
Vortex move meter
Ultrasonic move meter
Advantages of ultrasonic flowmeters
Disadvantages of ultrasonic flow meters
How to choose your digital flow meter?
What is an digital flow meter?
A circulate meter is a device used to measure the amount or mass of a gas or liquid. Flow meters have many names relying on the specific business, such as circulate meters, circulate indicators, liquid meters, flow sensors, circulate meters, and so on.
Electronic flow meters are industrial digital circulate meters used for liquid flow measurement. Common kinds of electronic circulate meters are electromagnetic, vortex and ultrasonic move meters.
Electromagnetic flowmeters are essentially the most straightforward electrical flowmeters with a first operating precept derived from Faraday’s Law. Vortex flowmeters rely on piezoelectric sensors to detect vortex currents coming off a set shedding bar. And ultrasonic flowmeters owe their profitable software to stylish digital sign processing.
Electronic move meter products
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 working principle
Simply put, the working precept of electronic flowmeter is to transform the circulate price of the measured fluid into an digital sign by way of the flow sensor assembly. And may be move display and sign output. For example, display instantaneous move, cumulative circulate, and so forth. Roughly divided into the following three categories.
Electromagnetic circulate meter
Electromagnetic flow meters work based mostly on Faraday’s principle of electromagnetic induction. Electromagnetic flowmeter is also referred to as only conductive fluid can be used.
Magnetic circulate meter consists of a non-magnetic pipe lined with an insulating material. 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 through the pipe under the influence of a selected density magnetic area generated by the electromagnetic coil, the quantity of voltage (E) generated throughout 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 via 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 transferring elements
Possible for hygienic functions
Available in massive sizes
Disadvantages of utilizing electromagnetic move meters
Cannot be used to measure gases, vapors and liquids containing large amounts of fuel
Can not be used to measure liquid media with very low conductivity Electromagnetic flowmeter cannot measure media such as petroleum merchandise 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 materials.
Electromagnetic flowmeter is prone to the influence of exterior electromagnetic interference.
Vortex circulate meter
Vortex circulate meters are sometimes made from 316 stainless steel or Hastelloy and embrace 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 circulate, the fluid will alternately separate from the thing on its downstream sides and, as As the boundary layer separates and coils back on itself, the fluid types vortices. These vortices result in areas of stress fluctuations detected by piezoelectric or capacitive sensors. Fluid velocity is determined by the frequency of the generated vortices and the Strouhal quantity and is given by the next 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 = variety of Strouhal
S varies with Reynolds number; however, it is virtually constant over a broad range of flow charges.
In apply, a k-factor representing the number of vortices generated per unit quantity is used instead of S. Thus the volumetric flow fee is
Q = f/K
Vortex flow meters are not usually recommended for dosing or other intermittent flow purposes. This is as a end result of the drip move setting of the dosing station may be under the minimal Reynolds quantity restrict of the meter. The smaller the whole batch, the more significant the resulting error could additionally be.
Low stress (low density) gases is not going to generate sturdy enough strain pulses, particularly at low fluid velocities. Therefore, in this sort of service, the gauge is more probably to have a poor vary and won’t be able to measure low move charges. On the other hand, if the decreased vary is acceptable and the meter is sized for regular flow, then a vortex flowmeter should still be thought-about.
The permanent 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 flow 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 some kilos per sq. inch. However, downsizing (installing smaller than line size gauges) to extend the Reynolds number can enhance the head loss to more than 10 psi. It can be important to make certain that the shrink strain is not decrease than the vapor strain of the process fluid, as this could lead to cavitation. Naturally, if the again stress on the meter is decrease than the steam pressure, the method fluid will flash and the meter studying might be meaningless.
The primary advantages of vortex move meters are their low sensitivity to adjustments in process conditions and low put on relative to orifice or turbine flowmeters. In addition, preliminary and maintenance costs are very low. For these causes, they have gained wider acceptance amongst users.
Ultrasonic move meter
The speed of sound propagation in a fluid is decided 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 speed of the flowing fluid.
Ultrasonic flow meters measure fluid velocity by transmitting high-frequency sound waves along the fluid move path. Fluid movement affects the propagation of those sound waves, which can then be Then it might be measured to deduce the fluid velocity. There are two primary forms of ultrasonic flowmeters: Doppler and transmission time. Both kinds of ultrasonic flowmeters work by transmitting Both kinds of ultrasonic flow meters work by transmitting high-frequency sound waves into the fluid stream (incident pulse) and analyzing the acquired pulses.
Doppler circulate meters utilize the Doppler impact, which is a frequency shift brought on by waves emitted or mirrored from a moving object. Doppler move 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 flow 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 signal is measured between two transducers, one upstream and one downstream. With flow or The distinction in time spent against the move determines the fluid velocity from which the circulate fee 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 materials.
Portable ultrasonic flowmeter converters can be used as a direct methodology of successfully determining move in comparability with other move methods.
Compared to different mechanical move meters, ultrasonic move meter converters are cheap to make use of and preserve as a outcome of they don’t have any transferring parts in these flow 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 flow meters
The main drawback of ultrasonic flowmeters is price. Compared to other types of mechanical move meters, move meters are very expensive .
Compared to mechanical circulate meters, ultrasonic circulate meters are extra complex and subsequently require specialists to repair and keep the move meters.
How to choose on your digital move meter?
ไดอะแฟรม ซีล when selecting a proper circulate meter system are
Media to be measured
Accuracy
Cost
Flow range
Operating requirements
Maintenance
Lifetime
Delivery time
These factors are more or less interrelated. For instance – the cost of a circulate meter increases with accuracy and quality of life. Flowmeter calibration and upkeep are additionally important to think about.
More articles on flowmeters:
Chilled water flow meter
Ultrasonic move meter working principle
Difference between circulate meter and move transmitter
Working principle of rotameter