Electromagnetic flowmeter is an instrument based on the principle of electromagnetic induction to measure the flow of conductive media. Its working principle is simple and clear, and it is widely used, from industrial production to environmental monitoring. Below we will introduce the working principle of electromagnetic flowmeter in detail.

Fundamentals of 1.

The working principle of electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. When the conductive medium flows in the magnetic field and cuts the magnetic induction line, an induced electric potential is generated in the conductive medium. The electromagnetic flowmeter uses this principle to calculate the flow rate of the fluid by measuring the induced potential.

2. detailed working process

1. Magnetic field generation: There is usually a fixed excitation coil in the electromagnetic flowmeter. When energized, a uniform magnetic field will be generated around the flowmeter pipe.

2. Induced potential: When a conductive medium (such as liquid or gas) flows in a magnetic field, the charge in the medium will generate an induced potential under the action of the magnetic field.

3. Signal detection: There are electrodes in the electromagnetic flowmeter to detect the induced potential, which is proportional to the flow of the fluid.

4. Conversion and output: The detected induced potential signal will be converted into a flow signal after being amplified by an amplifier, and then displayed or transmitted through a display instrument or an output device (such as a 4-20mA current signal).

3. features

Electromagnetic flowmeter has the characteristics of high measurement accuracy, good stability and fast response speed. Because it directly measures the conductivity of the fluid, it is not affected by parameters such as fluid temperature, pressure, and density. In addition, the electromagnetic flowmeter has low resistance to fluid flow and is suitable for various fluids, including corrosive liquids and slurries.

4. Application Areas

Electromagnetic flowmeter is widely used in chemical industry, electric power, metallurgy, environmental protection and other fields. In the chemical industry, it is used to measure the flow of various acids, alkalis, salts and other solutions; in the field of environmental protection, it is used to monitor the treatment flow of wastewater and waste liquid.

In summary, electromagnetic flowmeter is a flow measurement instrument based on the principle of electromagnetic induction, which calculates the fluid flow by measuring the induced potential. Its working principle is simple and clear, has the advantages of high measurement accuracy and good stability, and is widely used in the measurement and monitoring of various fluid flows. Understanding the working principle of electromagnetic flowmeter will help us to better apply and maintain this instrument and provide accurate data support for production and life.