Electromagnetic Flowmeter Anti-Interference Technology

The development and application of electromagnetic flow meter such as Explosion-Proof Electromagnetic Flowmeter and its anti-interference technology is closely related to the development and progress, especially in recent decades with three straight low-frequency rectangular wave excitation technology and dual-band rectangular wave excitation technology, as well as the microprocessor hardware and software technology significantly improved the electromagnetic flowmeter accuracy and anti-jamming capability, to expand the application fields of electromagnetic flowmeter, changed people long thought that electromagnetic flowmeter measurement accuracy is low, the concept of poor anti-interference ability.

The working principle of Electromagnetic flowmeter is a measuring instrument which calculates the fluid flow based on the induced potential of the conductive fluid moving in the magnetic field.

Therefore, electromagnetic coupling electrostatic induction is the primary source of electromagnetic flowmeter interference noise. The electrochemical interference noise produced by the characteristics of the medium is the second source of interference noise of electromagnetic flowmeter. The voltage and frequency fluctuation of the electromagnetic flowmeter is the third source of the electromagnetic flowmeter. The above three types of noise have different sources, mechanism and characteristics. The effect on electromagnetic flowmeter is different. And the corresponding anti-interference measures are also different.

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