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FM260 Electromagnetic Flowmeter

According to Faraday's law of electromagnetic induction, when a conductor passes perpendicularly through a magnetic field B, a voltage will be induced. In the measurement of this flowmeter, the moving conductor is a flowing conductive medium. The magnetic field B is emitted in a direction perpendicular to the flowing medium. The induced electromotive force U at the E1 and E2 electrodes is directly proportional to the flow velocity V of the medium.

U=K×B×V×D

K- Flowmeter constant

D- Internal probe spacing

The induced electromotive force U is further processed and then converted into a standard electrical signal for output or display

    Product Features

    -Compact design saves installation space

    -Anti-corrosion sensor technology

    - Fully electronic design with no moving parts and viscosity

    -Automatic temperature compensation

    -Pulse output/analog output /RS485 communication can be freely selected

    - Low pressure loss

    - Strong anti-fouling ability

    Product Application

    The application of electromagnetic flowmeters in multiple industrial fields

    The electromagnetic flowmeter operates based on Faraday's law of electromagnetic induction. When a conductive liquid moves in a magnetic field to cut the magnetic field lines, it will generate an induced electromotive force in a direction perpendicular to the magnetic field and the flow direction. The flow rate of the fluid can be calculated by measuring the magnitude of this electromotive force. Its unique working principle makes it widely and crucially applied in industrial fields such as petroleum, chemical engineering, metallurgy, light textile, papermaking, environmental protection and food.

    1. Petroleum Industry

    In the oil extraction process, electromagnetic flowmeters can be used to measure the flow rate of water injection in oil fields. To maintain the pressure of the oil layer and increase the crude oil recovery rate, a large amount of water needs to be injected into the oil layer. It is crucial to accurately control the injection volume. The electromagnetic flowmeter can accurately measure the water injection flow, helping the staff adjust the water injection plan according to the actual situation of the oil well and ensuring the efficient progress of the water injection operation. During the crude oil transportation process, as crude oil contains a certain amount of impurities and moisture and has a certain degree of conductivity, electromagnetic flowmeters can accurately measure the crude oil flow without interfering with the fluid flow state, providing reliable data for crude oil trade settlement. At the same time, it is also convenient to monitor the crude oil transportation situation in the pipeline in real time and promptly detect abnormal flow fluctuations. Prevent accidents such as pipeline leakage. In petroleum refining and chemical enterprises, electromagnetic flowmeters can be used to monitor the flow of various petrochemical products (such as gasoline, diesel, etc.) during production, storage and transportation, ensuring the stability of the production process and the accuracy of product measurement.​

    2. Chemical Industry

    In chemical production, there are a large number of conductive fluids with corrosive, high-viscosity, and strong oxidizing properties, such as sulfuric acid, sodium hydroxide solution, and various chemical slurries. Electromagnetic flowmeters, having no moving parts and no throttling components, are less prone to clogging and wear, and can meet the measurement requirements of these complex fluids. In the proportioning stage of chemical raw materials, by precisely measuring the flow rates of different raw materials, it is ensured that the chemical reactions proceed according to the predetermined formula, thereby enhancing product quality and production efficiency. In the production process of chemical products, electromagnetic flowmeters can monitor the flow of feed and discharge from the reaction vessel in real time, providing accurate data for process control, facilitating timely adjustment of production parameters, and ensuring the safety and stability of the production process. Meanwhile, in the process of chemical wastewater treatment, electromagnetic flowmeters can be used to measure the flow of wastewater containing various chemical substances, helping to optimize the wastewater treatment process and ensure that the wastewater is discharged up to standard.

    3. Metallurgical Industry

    In the metallurgical production process, electromagnetic flowmeters are mainly used to measure the flow of cooling water, industrial water, and some conductive liquid metals and other fluids. During the steel smelting process, to ensure the normal operation of equipment such as blast furnaces and converters, a large amount of cooling water is required to cool and reduce the temperature of the equipment. The electromagnetic flowmeter can accurately measure the flow of cooling water. Once an abnormal flow occurs, the system can promptly issue an alarm to remind the staff to take measures to prevent the equipment from being damaged due to insufficient cooling. In addition, during the smelting process of non-ferrous metals, electromagnetic flowmeters can also play a significant role in the flow measurement of some liquid metals with electrical conductivity (such as copper, aluminum, etc.), providing data support for the optimization of smelting processes and the control of product quality. In the water treatment system of metallurgical plants, electromagnetic flowmeters can be used to monitor the flow of industrial water, helping to rationally allocate water resources and improve the utilization efficiency of water resources. ​​

    4. Light Textile Industry

    In the light textile industry, electromagnetic flowmeters are often used to measure the flow of various fluids in the production processes of printing and dyeing, textile, etc. In the printing and dyeing process, it is necessary to precisely control the flow of fluids such as dyes, auxiliaries and water to ensure the uniformity and color stability of fabric dyeing. The electromagnetic flowmeter can measure the flow of these fluids quickly and accurately. In combination with the automatic control system, it can precisely control the process parameters of printing and dyeing, improving product quality and production efficiency. In the textile production process, electromagnetic flowmeters can also play a significant role in monitoring the flow of fluids such as sizing and lubricating oil, ensuring the normal operation of textile equipment and the quality of textiles. Meanwhile, in the wastewater treatment process of light textile enterprises, electromagnetic flowmeters can be used to measure the flow of production wastewater, providing data basis for the operation and management of the wastewater treatment system. ​​

    5. Papermaking Industry

    The papermaking process involves the treatment of a large number of fluids, such as pulp, white water, chemical additives, etc. Electromagnetic flowmeters can be used to measure the flow of pulp, helping to control the feeding speed of the paper machine and ensuring uniform paper thickness and stable quality. In the white water recovery system, accurately measuring the flow of white water is of great significance for improving the utilization efficiency of water resources and reducing production costs. Electromagnetic flowmeters can meet this measurement requirement. In addition, the flow control of various chemical additives (such as sizing agents, wet strength agents, etc.) added during the papermaking process also cannot do without electromagnetic flowmeters. By precisely measuring the flow of additives, it can be ensured that all performance indicators of the paper meet the requirements. Meanwhile, in the wastewater treatment process of papermaking enterprises, electromagnetic flowmeters can be used to monitor the wastewater flow, providing data support for the optimization of wastewater treatment processes and environmental supervision.​

    6. Environmental Protection Industry

    In the field of environmental protection, electromagnetic flowmeters are widely used in wastewater discharge monitoring in sewage treatment plants, waterworks, and industrial enterprises, etc. In sewage treatment plants, electromagnetic flowmeters can be used to measure the flow of influent, effluent and sludge return, etc., helping staff understand the operation status of the sewage treatment system, reasonably adjust the treatment process parameters, and ensure the sewage treatment effect and compliance with discharge standards. In waterworks, electromagnetic flowmeters can be used to measure the intake of raw water, the inflow of clear water tanks, and the supply of effluent water, etc., providing accurate data for water supply dispatching and pipeline management, and ensuring the stability and safety of urban water supply. In addition, installing electromagnetic flowmeters at the wastewater discharge outlets of industrial enterprises can monitor the wastewater discharge flow of the enterprises in real time, facilitating the supervision of environmental protection departments, preventing enterprises from discharging wastewater beyond the standard, and protecting the ecological environment.​​

    7. Food Industry

    In the food production process, electromagnetic flowmeters are often used to measure the flow of various food fluids, such as fruit juice, milk, syrup, edible oil, etc. Due to the extremely high hygiene requirements in the food industry, the electromagnetic flowmeter is made of food-grade materials, with a smooth inner wall that is not prone to adhering to impurities or breeding bacteria, meeting the hygiene standards for food production. In the filling process of food and beverages, by precisely measuring the fluid flow rate, the capacity of each bottle of product can be ensured to be consistent, thereby enhancing product quality and production efficiency. During the food processing, electromagnetic flowmeters can also play a significant role in the flow control of various ingredients, ensuring the stability of the taste and quality of food. Meanwhile, in the cleaning process of food enterprises, electromagnetic flowmeters can be used to measure the flow of cleaning water, helping to rationally control water usage, improve cleaning effectiveness, and ensure food safety.

    Technical Parameters

    Measuring range

     See the range gauge

    Suitable pipe diameter

     DN4... DN25(see the selection table)

    Measured medium

     Conductive liquid (conductivity >20 μ s /cm)

    Accuracy

     ≤±0.5% range

    Repeatability

     ≤±0.2% range

    Pressure resistance

     16 bar

    Supply voltage

     24±10%Vdc

    Current consumption

     ≤80mA

    Electrical protection

     Reverse polarity protection, short-circuit protection

    Output

     

    Pulse output

     NPN output, pull-up resistor 2K

    Analog output

     4... 20mA, current limiting 26mA, load resistance < 250Ω

    Response time

     < 100ms

    Ambient temperature

     -25... 85°C

    Medium temperature

     -40... 120 °C without thermal shock (optional high temperature 140°C)

    Materials

     

    Electrode

     Stainless steel 316TI

    Process connection

     Stainless steel 304

    Measuring tube

     PEEK

    Sealing

     EPDM

    Shell

     Stainless steel 304

    Electrical connection

     M12×1 connector

    Process connection

     External thread/internal thread/sanitary chuck are available for selection

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