What is an Electromagnetic Flow Meter?
Electromagnetic flow meters work by inducing a voltage in a conductor as it passes through a magnetic field, in accordance with Faraday's law of electromagnetic induction, and are a form of velocity or volumetric flow meter. Only conductive fluids can have their flow rate detected by mag meters.
Volumetric flow meters are used for measuring flow in pipes, electromagnetic flow meters are most suitable for use in wastewater applications and other situations demanding suitable liquid conductivity and little pressure drop. The display will precisely show the flow value to monitor changes in real time when the fluid volume flow in the pipeline varies. Electromagnetic flow meters are volume flow measurement devices with a mechanically inert flow meter alert. They have high linearity and can quantify instantaneous pulsing flow.
How is Flow Measured?
Using flow measurement devices, flow measurement determines the volume of fluid that moves through any pipe, channel, or area. Liquids, gasses, and vapor are all fluids that can be measured.
What is a Flow Measurement Device?
The amount of a substance that goes through a pipe in a given amount of mass or volume per unit of time is referred to as flow.
A device or piece of equipment is required to measure the flow of any fluid, and this instrument is referred as a flow-measuring device.
An instrument used to measure the flow rate of a fluid per unit of time is a flow-measuring device, also known as a flowmeter.
Working Principle of Flow Measurement
A flow measurement device, sometimes called a flowmeter, measures the volume of a fluid, such as a liquid, gas, or stream. The flow meter determines either the liquid's mass or volume.
Ways of Flow Measurement
As previously established, there are two ways to quantify flow: in terms of volume or mass per unit of time.
Volume Flow
The measurement of the volume quantity that travels through a specific region or segment per unit of time is known as the volumetric flow of a material.
Mass Flow
The measurement of the mass quantity that goes through or flows through a certain area or segment per unit of time is known as the mass flow of a material.
Why Is Flow Measurement Important?
Flow measurement is crucial in industries since it affects how well your system works. This implies that if the system where flow operations are taking place in your industry is operating well, it will generate extremely precise outcomes. So, the operation of your system will be more accurate the more precise the data from your flow measurement.
To monitor, regulate, and keep an eye on the rate of fluid flow through a channel or segment, flow measurement is essential. A broad variety of liquids, including heavy oils, light gases, spirits, chemicals, water, or food, can be measured using the flow measurement process.
It is essential to determine the flow, and the fluid must be used regularly. It guarantees the accuracy of the fluid flow rate. Moreover, it ensures that the right fluid is processed at the right time and location. It also helps in emphasizing the fluid quality.
If critical applications are being used in the industry, precise monitoring of the liquid fluid flow is crucial since even a small inaccuracy can result in significant losses.
An insulating substance fills a non-magnetic pipe that serves as the foundation of an electromagnetic flowmeter. A pair of electrodes are inserted into the pipe and its lining, and a pair of magnetic coils are positioned.
How do magnetic flow meters work?
The basis for calculating and measuring the flow of conductive liquids is the magnetic field of a mag meter. The voltage the fluid produces rises with velocity, sending a signal to the meter as a result. A conductive liquid or fluid's speed or velocity as it moves through a pipe or duct is readily measured by an electromagnetic flow meter.
Electromagnetic Flow Meter Working Principle
An electromagnetic flow meter working principle states that a mass or volumetric flow meter measures the flow velocity of liquids in a pipe or tube using electrodes that are attached to the liquid flow. Because of their unique construction, electromagnetic flow meters may obtain measurements without the need for any moving components. It can assess high-pressure applications due to a unique feature without having to worry about seepage or leakage.
Electromagnetic flow meters are reliable and accurate regardless of temperature, pressure, liquid viscosity, or liquid density. Measuring viscous materials is made simple and effective by this unique tool.
The Working of an Electromagnetic Flow Meter
Electromagnetic flow meters use Faraday's law of induction to determine the direction of fluid flow.
A magnetic field is created by an electromagnetic coil, and electromotive force is measured by electrodes in an electromagnetic flow meter (voltage). As a consequence, the flow may be monitored even if it seems like nothing is flowing via an electromagnetic flow meter's flow pipe.
The Electromagnetic Flow Meter Formula
According to Faraday's law, electromagnetic flow meters use electromagnetic induction to measure flow. The law states that an electromotive force e is generated whenever a conductor of length l travels at a speed v perpendicular to a magnetic field B in a direction that is likewise perpendicular to both of them.
The volume flow rate and the resultant electromotive force are inversely related.
According to Faraday's equation, the amount of voltage (E) that develops between the electrodes when a conductive fluid flows through a pipe with a diameter (D) via a magnetic field density (B) produced by the coils will be proportional to the liquid's velocity (V). Since the pipe diameter and magnetic field density are fixed quantities, they may be combined to provide a calibration factor (K), and the equation becomes:
E = KV
A signal-weighting factor makes up for the velocity variations at various places in the flow profile. The magnetic coils are shaped so that the magnetic flux will be greatest when the signal weighting factor is lowest and vice versa, providing further compensation.
By water-calibrating each flow tube, manufacturers may establish the K factor for each mag meter. The K value so acquired is linear over the whole flowmeter range and is applicable for any other conductive liquid. Because of this, flow tubes are typically calibrated at a single velocity. As changing the direction will affect the polarity but not the amount of the signal, mag meters may detect flow in both directions.
Features of Mag Meters
The following are some features of an electromagnetic flow meter that benefits many industries:
In addition to being highly capable of handling liquids of various types and concentrations, mag meters have the following notable benefits overflow meters:
- These flow meters can precisely measure the movement of liquids even in corrosive environments. As a result, they are useful for measuring corrosive materials like slurries and abrasives.
- The accuracy rate of electromagnetic flow meters is quite high.
- They are helpful for figuring out how quickly combustibles or explosives move liquid.
- Mag meters utilize extremely little electricity, making them energy-efficient.
- They may be used to measure the flow rate of almost any liquid substance as well as the majority of acids and bases. Electromagnetic liquid flow meters can measure liquid flow precisely in both upstream and downstream directions. Both low and high flow rates of liquids can be seen by them.
- The electromagnetic flow meter requires less energy and has a simple sensory design. The meter's measuring tube has no moving components. Also, it is devoid of any movable parts that can obstruct fluid flow. Therefore, no pressure is lost while the fluid passes through the device.
- Accuracy: The electromagnetic flow meter device detects sloped medium flows, suspended liquid-solid two-phase flows, and corrosive medium flows with great accuracy. This is because there are no obstructions to flow inside the measurement tubes. The only components that make touch with the flowing fluids are the electrode and the measurement tube's lining.
- Use of an electromagnetic flow meter in hospitals:
- The installation of flow meters depends on their types.
To make sure that the installation complies with the specified material compatibility of the flowmeter, it is crucial to consult the electromagnetic flow meter manufacturers in India.
The tool is for volumetric measurements. The density, viscosity, and temperature of the medium under test have no effect on the instrument during the measurement procedure within a particular range of electrical conductivity. After being calibrated using water, the instrument monitors the flow rates of various conductive liquids.
Additional benefits of a magnetic flow meter include:
- Determining how effectively liquids flow through it in reverse
- Ideal for solid hydraulic transportation
- Offers a broad linear range
- The measurement range setting has been improved.
- Uses for magnetic flow meters
There are several uses for electromagnetic flow meters because of the benefits listed above:
- They are useful in measuring the quantity of potable water.
- On construction sites, they might be used to gauge the flow of slurries.
- They are helpful when determining the flow rate of combustible fuels in facilities that process petroleum.
- They are useful for figuring out how much paint, abrasives, and explosive liquid are displaced.
Electromagnetic Flow Meter Applications
- Some of the electromagnetic flow meter applications in industries in a variety of industries, such as chemical production, distilleries, mining, and brewery applications.
- Chemical production is heavily dependent on mag meters to provide accurate and precise measurements of product flow, while distilleries require them to ensure the quality and standards of the products being manufactured.
- Mining operations require accurate regulation and monitoring of thick, heavy sludge to ensure safety, while brewery applications require accurate and precise measurements to ensure the correct amount of water is supplied and to reduce waste.
- Regardless of density or viscosity, flow is measured with mag meters, and the information obtained is converted into mass flow measurements.
- Breweries use a variety of tools to measure water usage, product waste, and wastewater. These tools are essential for breweries to minimize costs due to water usage, product waste, and wastewater.
- In water treatment plants they are used to monitor the flow of hot water, chilled water, and condensed water networks. Mag meters are used to measure water flow and usage.
- Slurry measurement is used to measure suspended solids, such as cement, coal, and fly ash.
- Electromagnetic flow meters are used to measure heated fluids, as they can survive the heat and tolerate the particle content of heated liquids while still providing accurate data.
Atlantech is a flow meter supplier in India that offers a great variety of electromagnetic liquid flow meters.
Atlantech is a leading name in electromagnetic flow meter manufacturers in India. As your one-stop flow meter supplier for industries, owing to our significant experience, we have been able to develop a broad and exciting range of premium electromagnetic liquid flow meters that are efficient in taking precise measurements of liquid flow rates. Call us at +91 9602142150 to find out more.