Factors to consider when choosing an electromagnetic flow meter

Abstract: The factors that should be considered in the selection of electromagnetic flowmeters are provided by excellent flowmeter and flowmeter manufacturers. As a type of flowmeter, electromagnetic flowmeter is widely used, because of its simple structure, no pressure loss will occur when fluid flows through the flowmeter; electromagnetic flowmeter can measure domestic wastewater, industrial wastewater, etc., and even measure Liquid-solid two-phase. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the factors that should be considered when selecting electromagnetic flowmeters. As a type of flowmeter, electromagnetic flowmeter is widely used, because of its simple structure, no pressure loss will occur when fluid flows through the flowmeter; electromagnetic flowmeter can measure domestic wastewater, industrial wastewater, etc., and even measure The flow of liquid-solid two-phase. The main features of the electromagnetic flowmeter are: the measurement process is not easily affected by the density, temperature and viscosity of the liquid; the speed measurement scale is relatively wide. Of course, electromagnetic flowmeter measurement has limitations, because electromagnetic flowmeter can only measure conductive liquid, not gas and steam. So what aspects should be considered when selecting an electromagnetic flowmeter? 1. The medium measured by the conductivity electromagnetic flowmeter requires conductivity. Liquid conductivity needs to be greater than 5μs/cm. 2. The accuracy of the electromagnetic flowmeter is high. Because the measuring range of the liquid flowmeter is large, the accuracy must be small if the measuring range is large. The larger the range, the greater the error, so the accuracy needs to be strictly controlled. The accuracy of the precision flowmeter is 0.5-1, while the accuracy of the conventional glass-turn and gold-turn is 2.5. The difference is still a bit big. In metering and billing, it is still necessary to choose a high-precision electromagnetic flowmeter. 3. Selection of flow rate and caliber The flow rate requirement of the electromagnetic flowmeter is between 0.5-15m/s, and the reasonable flow rate is generally between 1.5-3m/s. If the flow rate is too fast, it may scratch the PTFE lining if it contains particles. The flow rate and caliber need to have a reasonable selection. 4. The selection of grounding ring and electrode raw materials is caused by the mismatch between the measured liquid and the electrode or the grounding ring. This mismatch is not only a corrosion problem, but also the surface effect of the electrode, mainly including: chemical reaction, polarization phenomenon, catalyst Effect. Ground rings have the same problems, but to a lesser extent. 5. Assuming that there are particles in the solid-phase liquid in the body, the possible disadvantages are: cover the accumulation layer on the surface of the electrode and the fabric, wear the fabric, and reduce the cross-sectional area of ​​the pipe. Some relatively simple crystalline liquids cause a layer of solids on the inner wall when the fluid flows through the flowmeter. Because the same problem exists with other types of flowmeters, a flowmeter with a very short pipeline to be measured and easy to disassemble can be used. , it can be easily disassembled to stop protection after crystallization. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Factors to Consider in Selecting Electromagnetic Flow Meters'
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