Integrated electromagnetic flow meter

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Electromagnetic flow meter and vortex flow meter What are the differences

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        As a professional supplier of flow meter, it is very important to use the flow meter users, talk about two kinds of widely used two flow meters. The first is the electromagnetic flow meter, the second is the vortex flow meter. This is what we often use most of the two flow meters. What is the difference between them before? I will tell you from the following points: 1. Electromagnetic flow meter and vortex flow meter principle is different.    According to the principle of flange electromagnetic induction, a pair of test electrodes are installed on the wall of the tube which is perpendicular to the axis of the measuring tube and the magnetic field lines. When the conductive liquid moves along the axis of the measuring tube, the conductive liquid cuts the magnetic field lines to generate the induced potential. The sensing potential is detected by two sensing electrodes. The value is proportional to the flow rate. The value is E = B * V * D * ...
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The relationship between electromagnetic flowmeter and excitation mode

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1. DC Excitation Technology: The use of permanent magnet or DC power supply to the electromagnetic flux sensor excitation winding power supply, to form a constant excitation magnetic field. It has the characteristics of simple and reliable method, small influence by power frequency interference and small self inductance phenomenon in fluid. However, the biggest problem is that the DC induction potential on the surface of the two electrodes to form a fixed positive and negative polarity, will cause the measured medium of electrolysis, resulting in the electrode surface polarization phenomenon. The existence of this phenomenon will increase the effective resistance between electrodes, the electrode polarization and potential drift, and seriously affect the signal conversion put most of the work. 2. The power frequency sine wave excitation technology: is uses the work frequency 50Hz sine wave electricity supply to the electromagnetic flux sensor excitation winding power supply, causes it ...
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The working principle of ultrasonic flowmeter

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The acoustic flowmeter is a non-contact instrument which has been applied in recent years, which is suitable for the fluid and large diameter flow which is not easy to be contacted for measuring and observing. The flow measurement of open flow can be carried out by linkage with water level meter. The use of ultrasonic flowmeter than not in the fluid to install the measuring elements so that the flow of fluid will not change the state, no additional resistance, installation and maintenance of instrumentation can not affect the production line operation is an ideal energy-saving flowmeter. At present, industrial flow measurement generally exists the problem of large diameter and big flow measurement, which is because the general flowmeter will bring difficulties in manufacturing and transportation with the increase of measuring pipe diameter, the cost increase, the energy loss increase, installation not only these shortcomings, ultrasonic flowmeter can be avoided. Because all kinds of ul...
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