How to select the electromagnetic flow meter scale

Abstract: how to select the electromagnetic flow meter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter is a kind of measurement of conductive liquid pipeline flowmeter with low flow resistance, no moving parts, high measurement precision, etc. Pictured above is the basic structure of the electromagnetic flowmeter. Huaian ruentex group instrument co. , LTD. Lee electromagnetic flowmeter measurement principle is. More flow meter manufacturers choose model price quote you are welcome to inquire, here is how to select the electromagnetic flow meter scale article details. Electromagnetic flowmeter is a kind of measurement of conductive liquid pipeline flowmeter with low flow resistance, no moving parts, high measurement precision, etc. Pictured above is the basic structure of the electromagnetic flowmeter. Huaian ruentex group instrument lee electromagnetic flowmeter measurement principle is based on Faraday's law of electromagnetic induction: when a conductive object in motion in magnetic field, the conductor cutting lines, conductor on both ends of the induced electromotive force, the size of the induced electromotive force and the length of conductor is proportional to the conductor, the magnetic induction intensity and movement speed, i. e. , how to choose how to select the electromagnetic flowmeter in electromagnetic flowmeter, electromagnetic flowmeter with conductive coil magnetic field, the conductive liquid conductor, by measuring the electrode to detect induction electromotive force, the pipe length of the inside diameter of the conductor and coil generating stable magnetic field on a certain current, so to measure the induction electromotive force can know the flow of conducting liquid velocity, and flow rate is calculated. The application range of the electromagnetic flowmeter is very broad, from all walks of life are used. It can measure the clean water, sewage, acid, alkali, chemical raw materials with conductive ion, etc. Electromagnetic flowmeter measuring pipe size range is very wide, known zui small diameter can be done within 1 mm, zui can do 3 meters. Select electromagnetic flowmeter must first determine whether fluid conduction, cannot conduct electricity, shall not apply to the electromagnetic flowmeter. Second, the fluid is corrosive, should be considered if there is corrosive, need for lining material corrosion resistance requirements. General acid-resistant rubber and ptfe has good corrosion resistance, natural rubber, neoprene and polyurethane rubber corrosion resistance is poor. Third, we should consider the fluid temperature, suitable temperature range of ptfe zui, wide - 80 ℃ to + 150 ℃, polyurethane rubber can only 40 ℃ temperature below, other rubber is generally not more than 80 ℃. Fourth, to consider whether to particulate impurities in the fluid. Particles will be on the wall of pipeline caused by wear and tear, then need to consider the wear resistance of lining material. Polyurethane rubber is zui good abrasion resistance of lining material, neoprene is fine, other materials are relatively weak. Fifth, want to consider the environmental conditions of installation location. Electromagnetic flowmeter performance of resistance to electromagnetic interference is relatively weak, this is determined by how it works, so when near strong electromagnetic interference, or near the pipe pile with center line, transformer of transformer substation grounding, electromagnetic flow meter is not suitable for installation. Sixth, want to consider the suitability and economy of flow and the pipe. Keep zui so that the pipe 0. More than 5 m/s of velocity, because the lower the flow rate, induction electromotive force is weak, the uncertainty of the flow meter, are also susceptible to interference. Usually, if you need to consider saving pipeline energy consumption, economic flow velocity of 2 m/s to 3 m/s, the higher the velocity, the faster the fluid conveying speed, but energy consumption to the square of the velocity of growth. When the flow rate is too low, therefore, should be to reduce the pipeline, in order to improve the velocity of flow; When the flow rate is too high and there is no special requirement, craft can expand pipe to reduce the flow velocity. Seventh, as far as possible to avoid the electromagnetic flowmeter to soak in the water. Bubble water for a long time, the electromagnetic flowmeter sensor is easy to be affected with damp be affected with damp, measuring performance will decline, and even damage. The advantages of electromagnetic flowmeter selection is very easy, but not neat, the electromagnetic flowmeter on market price performance is uneven, also allows the user created difficulties when choosing suppliers. Although the electromagnetic flow meter manufacturing technology more mature, but good electromagnetic flowmeter needs to have good technology, process and equipment support. Judge of electromagnetic flowmeter, the first can be visually observed. One is the welding surface, and a good process to ensure the electromagnetic flow meter housing, flange welding surface usually has better smoothness. On the other hand, if there is a obvious concave and convex welding surface and rough feeling, there is reason to suspect that the performance of the flowmeter, welding bad influence not only the appearance, but also affect the sealing performance, in addition to can lead to leakage, may also be caused by poor sealing coils be affected with damp be affected with damp, serious can cause under the effect of fluid pressure flange welding crack. 2 it is to see the lining, by observing the smoothness of the lining and cylindricity to judge the performance of the flowmeter. Craft good smoothness and cylindricity flowmeter lining, no obvious lining processing spell juncture, whereas lining processing poor quality and the performance of the flowmeter will be affected.

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