Electromagnetic Flow Sensor

Electromagnetic Flow Sensor

Electromagnetic Flow Sensor

1. Pipe diameter: DN6-DN2800
2. Type: split type, integrated type, plug-in type (suitable for pipe diameters above DN100)
3. Lining material: Neoprene, PTFE, PFA, FEP, F46
4. Electrode material: SS316L, HC, HB, Ti, Tan, Pt

1.Working Principle:

The electromagnetic flow sensor is a liquid flow meter that uses Faraday’s law of electromagnetic induction to measure the flow of conductive fluids. The principle of operation relies on the generation of a voltage when a conductive liquid flows through a magnetic field.


The sensor consists of three electrodes (positive, negative, ground) placed perpendicular to the flow direction and a magnetic coil surrounding the flow channel. When a conductive liquid flows through a magnetic field, an electric potential is created across the electrodes. This potential is proportional to the velocity of the liquid flow and is used to calculate flow.


It has various advantages. It measures the flow of conductive fluids such as slurries, acids and alkaline solutions. It is also unaffected by changes in fluid density, viscosity or temperature. Plus, it has no moving parts, making it highly reliable and low maintenance. It is an important tool for measuring the flow of conductive liquids. Its rugged construction and reliable performance make it suitable for a wide range of industrial applications.


Magnetic flow sensors

Split Magnetic flow sensors

Insertion Electromagnetic Flowmeter

Stainless steel Magnetic flow sensors

SS304 Split Magnetic flow sensors

Separate plug-in Magnetic flow sensors


2.Application range and precautions:

Electromagnetic flowmeters are widely used in sewage, fluorine chemical industry, production water, tap water industry, medicine, steel and many other aspects. Because the principle determines that it can only measure conductive liquids.


※ The measurement range ratio is 30:1, which is higher than that of vortex flowmeters and differential pressure flowmeters.


※ There are also requirements for straight pipes before and after installation, but the requirements are lower than other types of flowmeters, but it must be met: the liquid needs to be full,


※ Protection level. Generally, the protection level of the integrated type is IP65, and the split type is: IP65, IP67, IP68 (for sensors). If there are requirements for the instrument installation environment, the installation location is in an underground well or other damp places. In other places, it is recommended to choose a split type, and the protection level is IP68.


※ It can measure strong corrosive liquids, but it needs to configure the lining and electrodes correctly.


※ The reliability and stability are relatively good, but due to its principle, the electrode surface of the sensor is always in contact with the liquid, and the electrode surface is relatively easy to be polluted. If the dirt on the electrode surface can be cleaned regularly, the Electromagnetic flow sensor can guarantee high-precision and stable work for a long time.


3.Accuracy Curve:


Electromagnetic flowmeter accuracy curve


4.Workshop Production Diagram:

Electromagnetic flowmeter welding diagram

Electromagnetic flowmeter sensor diagram

Internal structure diagram of electromagnetic flowmeter

Internal structure diagram of electromagnetic flow meter

Electromagnetic flow meter welding details

Integrated Mag Flowmeter


5.All copper coil inside the flowmeter:

DN600 electromagnetic flowmeter internal coil

Electromagnetic flowmeter internal coil

Electromagnetic flowmeter coil production

Mag flowmeter  Coil Fabrication


6.Work site pictures:

Electromagnetic flowmeter works

7.Available lining and electrode materials:


Lining material: rubber lining, PTFE, F46, PFA.


Electrode material: SS316, titanium, Hastelloy, tantalum, tungsten carbide, platinum.


8.On-site installation guide map:

Electromagnetic flowmeter installation guide

Inclined pipe installation position

Wastewater Flow Meter Installation

milk flow meter installation

With valve installation position

Straight pipe section before and after the flowmeter


9.Factory site video:



10. FAQ:

1. Q: How about the precision of your products?

A: All of our products are checked one-to-one before leaving the factory to ensure a 100% pass rate, an accuracy of 0.5%, and the highest accuracy of 0.2%.

2. Q: What about the warranty?

A: Our product warranty is 24 months, if there is a product quality problem, we support free replacement.

3. Q: Can we order a sample first? How many PCS is the MOQ?

A: Of course, our MOQ is 1PCS.

4. Q: Can you deliver the goods to our country? By what means?

A: Of course, we can transport the goods to your designated place by express, air, railway, sea.

5. Q: Can I visit your factory?

A: Of course, you are always welcome to visit our factory if you need.

6. Q: What is the payment method?

A: We support: TT payment, credit card online payment, RMB payment, Western Union payment and LC payment.

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