Decipher electromagnetic flowmeter “secret weapon” - magnetic field compensation technology

Project Overview

　　Electromagnetic flowmeter is a commonly used flow measurement instrument, which utilizes the principle of electromagnetic induction to measure the flow of conductive liquids. However, due to the influence of environmental and equipment factors, electromagnetic flowmeter in practical applications often have errors and drift problems. In order to solve these problems, magnetic field compensation technology has been introduced into the electromagnetic flowmeter, which has become a “secret weapon” to solve these problems.

　　Electromagnetic flowmeter through the use of electromagnetic induction principle to measure the flow of conductive liquids. Its working principle is to use the liquid flow through the conductive pipe when the eddy current and magnetic field interaction, resulting in induced potential signal, and then measure the flow of liquid. However, due to the interference of external magnetic fields and ambient temperatures and other factors, the measurement results of electromagnetic flow meters are inaccurate.

　　In order to solve this problem, magnetic field compensation technology has been introduced into electromagnetic flowmeters. Magnetic field compensation technology is a technique that utilizes the direction and magnitude of the magnetic field to correct the measurement results of electromagnetic flow meters. This technique compensates for external magnetic field interference by placing a magnetic field compensator around the electromagnetic flowmeter. When the external magnetic field changes, the magnetic field compensator emits a reversed magnetic field which counteracts the interference of the external magnetic field. In this way, the measurement results of the electromagnetic flowmeter will be more accurate and stable.

　　Supmea electromagnetic flowmeter picture

　　Magnetic field compensation technology can also improve the accuracy of electromagnetic flow meters by correcting the drift problem in them. The drift problem in electromagnetic flowmeter is caused by the change of factors such as ambient temperature and liquid temperature. When the ambient temperature and liquid temperature change, the measurement results of the electromagnetic flowmeter will also change, thus affecting its accuracy. Magnetic field compensation technology can eliminate these drift problems by correcting the magnetic field, thus improving the accuracy and stability of the electromagnetic flowmeter.

　　In short, the magnetic field compensation technology is to solve the electromagnetic flowmeter error and drift problem “secret weapon”. It uses the direction and size of the magnetic field to correct the electromagnetic flowmeter measurement results, thereby improving its accuracy and stability. In practice, the magnetic field compensation technology has been proven to significantly improve the measurement accuracy and stability of electromagnetic flowmeter, widely used in chemical industry, petroleum, natural gas, water treatment and other fields. Compared with the traditional electromagnetic flowmeter, electromagnetic flowmeter with magnetic field compensation technology has higher accuracy, better linearity and more stable output signal. At the same time, the magnetic field compensation technology can also improve the electromagnetic flowmeter's anti-interference ability, so that it is more suitable for complex industrial environment.