Your Professional Electromagnetic Flowmeter Supplier
Xian Baochen Information Technology Co., Ltd. is located in high-tech Zone, Xi 'an, Shaanxi Province, China, is a focus on sensors, transmitters, inverters, power semiconductor devices and supporting instruments R & D, manufacturing, sales and service enterprises. The company invests in research and development team, cooperates with excellent universities, integrates industry resources, and provides the best quality solutions for domestic and foreign users. Enterprise mission: to meet user needs and create value for customers.
Why choose us
Sales Market
We Products are exported to Europe, America, Southeast Asia, West Asia, Central Asia and other countries around the world. Our products are well received in these markets.
Our Service
Able to quickly respond to customer needs, to provide personalized customization, timely delivery, professional technical support and perfect after-sales service.
Strict Quality Control System
Able to efficiently produce large quantities of products, advanced production processes and stable supply chains, the implementation of strict quality control system. Constantly introduce new technologies and new materials to improve product performance and production efficiency.
Wide Range of Applications
Through the EU CE, RoHs testing, products are widely used in petrochemical, water conservancy and hydrology, machinery and equipment, automobile manufacturing, industrial process control, weighing measurement, people's livelihood applications and other fields.
Electromagnetic Flowmeter
Magnetic flow meters, also known as mag meters, utilize Faraday's Law of Electromagnetic Induction to measure the flow rate of liquid in a pipe. This technology is ideal for applications involving conductive fluids, such as water, acids, and slurries. These meters offer the advantage of having no moving parts, which minimizes maintenance requirements and allows for the measurement of flow rates with high accuracy and repeatability. Magnetic flow meters are highly versatile and can be used in various industries, including water treatment, chemical, and pharmaceutical.
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Measuring diameter |
DN100~DN3000 |
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Precision |
1.5, 2.0 |
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Flow rate range |
1.0m/s~10m/s, |
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Dielectric conductivity |
Greater than 50us/cm |
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Working pressure |
1.6MPa |
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Electrode material |
Molybdenum containing stainless steel 0Cr118Ni12Mo2Ti, Ha alloy c-276, titanium Ti, etc. (conventional version :316 stainless steel) |
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Measuring tube material |
ABS |
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Medium temperature |
0°C~60°C |
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Protection level |
IP65 or IP68 |
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Output signal |
4~20mA; Frequency pulse |
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Communication function |
RS485 Modbus RTU protocol |
Advantages of Electromagnetic Flowmeter
High Accuracy and Precision: Electromagnetic flow meters offer high accuracy levels, often around ±0.2% to ±0.5% of the reading, which can be critical in applications where precise measurements are essential, such as in chemical dosing or pharmaceutical manufacturing.
No Moving Parts: The absence of moving parts inside the flow tube minimizes the risk of mechanical wear and tear, resulting in lower maintenance costs and enhanced durability. This design also reduces the chances of pressure loss, making them highly efficient.
Wide Range of Applications: Mag meters are versatile and can be used for various types of conductive fluids, including slurries, dirty water, corrosive chemicals, and viscous fluids. This broad applicability makes them ideal for industries like wastewater treatment, mining, and food and beverage processing.
Bi-directional Measurement Capability: These meters can measure flow in both directions, which is valuable in applications where the flow direction can change or needs to be monitored from multiple directions.
Insensitive to Fluid Properties: Magnetic flow meters are unaffected by changes in fluid density, viscosity, temperature, or pressure. This advantage ensures consistent and reliable measurements, even under varying process conditions.
Easy to Maintain: With no mechanical components and minimal parts that come into contact with the liquid, maintenance is straightforward. Periodic calibration and electrode cleaning are often all that is required to keep mag meters operational.
In-Line Electromagnetic Flow Meters: These are directly installed into the pipeline and offer the highest accuracy and reliability. They come in various sizes to match different pipe diameters and are commonly used in industries requiring precise flow measurements, such as water treatment plants and chemical processing facilities.
Insertion Electromagnetic Flow Meters: Ideal for larger pipes where in-line meters would be prohibitively expensive. Insertion meters have a probe that is inserted into the pipe and measures the flow velocity at a specific point. While they offer slightly lower accuracy than in-line meters, they are more cost-effective for large-diameter pipes and can be installed without shutting down the process.
Battery-Powered Electromagnetic Flow Meters: Designed for applications where power availability is a concern, such as remote water distribution and irrigation systems. These mag meters offer portability and ease of installation but may have limitations in data logging and continuous operation.
Sanitary Electromagnetic Flow Meters: These meters are designed to meet the stringent hygiene requirements of the food, beverage, and pharmaceutical industries. They feature smooth surfaces, quick-release fittings, and materials that can withstand frequent cleaning, ensuring compliance with industry standards like 3A or EHEDG.
Applications of Electromagnetic Flow Meters
Water and Wastewater Treatment
In municipal and industrial water systems, mag meters are used for measuring raw water, treated water, sludge, and chemicals. Their resistance to abrasion from solids makes them ideal for wastewater applications.
Chemical and Petrochemical Industries
Mag meters measure aggressive chemicals, acids, bases, and corrosive liquids. Their non-intrusive measurement method ensures compatibility with corrosive and viscous substances.
Pharmaceutical Industry
Accurate and sterile flow measurement is critical in pharmaceutical manufacturing, where mag meters provide reliability and precision for liquid handling and chemical addition processes.
Food and Beverage Industry
Electromagnetic flow meters are used in the production of beverages, dairy products, and other consumables. The meters ensure precise dosing and quality control, adhering to hygiene standards with sanitary-grade models.
Components & How It Works of Electromagnetic Flowmeter
Flow Tube: The section through which the fluid flows, typically lined with a non-conductive material.
Magnetic Coils: These generate a magnetic field across the flow tube.
Electrodes: Placed on opposite sides of the tube, they detect the voltage induced by the fluid's movement.
Transmitter: This component processes the voltage signal and converts it into a readable flow rate.
How it works
1. Structure: The flow meter consists of a non-magnetic, non-conductive pipe section (known as the flow tube), often made of stainless steel or other durable materials, lined with an insulating material like PTFE or rubber. Inside the pipe, there are two electrodes placed diametrically opposite to each other. These electrodes come into contact with the flowing liquid.
2. Magnetic Field Generation: Coils surrounding the flow tube generate a magnetic field perpendicular to the flow direction of the fluid. When the conductive liquid moves through this magnetic field, an electromagnetic force (emf) is induced between the electrodes.
3. Voltage Measurement: The induced voltage is picked up by the electrodes and sent to a transmitter, which converts this voltage signal into a flow rate using the equation derived from Faraday’s Law: E = k × B × D × V where E is the induced voltage, k is a constant, B is the magnetic field strength, D is the internal diameter of the pipe, and V is the velocity of the liquid. Since B and D are constants for a given flow meter, the voltage E is directly proportional to the fluid velocity V.
4. Flow Rate Calculation: The transmitter processes the voltage signal and provides a volumetric flow rate, which is then displayed on a digital interface or integrated into a control system.
5. Zero Stability: One of the key features of mag meters is their zero stability. If there is no flow, the induced voltage should ideally be zero. This feature makes mag meters exceptionally accurate, as any voltage signal under no-flow conditions is typically treated as noise and calibrated out.
Cost: Mag meters come at a variety of price points, but generally, the more you spend, the better the accuracy will be. That accuracy becomes ROI over the coming years.
Application: The type of fluid, temperature of fluid, flow range, and pressure will help determine the type of electromagnetic flow meter that will work best.
Accuracy and range: Certain meters may offer more precision than others (full-bore mag vs. full-profile insertion). Make sure you choose a meter that offers the level of precision necessary for your business. Turndown, or flow range of the meter, is another important consideration when choosing a mag meter.
Upstream and downstream piping: Mag meters work best when there is minimal upstream and downstream straight piping used. However, the importance varies based on whether the project is new, a retrofit, or an expansion.
Ease of installation: The best meter for each project will vary based on line size and location. For example, a full-bore meter may work best for smaller line sizes, while a full-profile insertion meter can be a cost-effective choice for larger projects.
Horizontal and vertical installation: The sensor can be installed horizontally and vertically, but should ensure that to avoid the impact of sediment and air bubbles on the measuring electrode, the electrode axial to maintain the level is good. Vertical installation, the fluid should flow from bottom to top. The sensor can not be installed in the highest position of the pipe, this position is easy to accumulate air bubbles.
Ensure full pipe installation: Ensure that the flow sensor in the measurement, the pipe is full of the measured fluid, can not appear non-full pipe state.
The sensor can not be installed in the inlet of the pump: To avoid negative pressure, the sensor can not be installed in the inlet of the pump, but should be installed in the outlet of the pump.
Inlet straight pipe section and outlet straight pipe section
The more ideal installation location should be selected before and after the measurement point has enough straight pipe section. Import straight section should be ≥ 10 × DN, export straight section ≥ 5 × DN.
Grounding
Electromagnetic flowmeter must be properly grounded in order to eliminate electromagnetic noise and ensure the safety performance of the instrument.
Installation environment requirements
Should ensure that the installation site around no vibration, no strong electromagnetic field.
FAQ
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electromagnetic flowmeter