Why Magnetic Flow Meter Grounding Matters

Abstract: Why is electromagnetic flow meter grounding important information is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. The intelligent electromagnetic flowmeter is developed based on the standardized manufacturing system. The advanced design concept of Changzhou Chengfeng Instrument ensures the high precision and high reliability of the product. Compared with the old electromagnetic flowmeter, it has high measurement accuracy and reliability. Strong and stable. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on why the grounding of electromagnetic flowmeters is important. The intelligent electromagnetic flowmeter is developed based on the standardized manufacturing system. The advanced design concept of the instrument ensures the high precision and high reliability of the product. Compared with the old electromagnetic flowmeter, it has high measurement accuracy and strong reliability. It has the advantages of good stability, complete functions and long service life. An important part of the electromagnetic flowmeter, the grounding part, will talk about its importance today. Because the potential signal of the electromagnetic flowmeter itself is a small signal, the normal signal will be washed away immediately when it encounters interference. Grounding can avoid the potential generated by the fluid flushing in the pipeline, and at the same time make the zero of the measured potential and the zero of the medium the same to avoid differential errors. It is equipped with a grounding ring, and then the grounding ring is connected to the pipeline. If it is lined, electrodes are also required to ground. The signal of the electromagnetic flowmeter is weak, only 2.5~8mv at full scale, and only a few microvolts when the flow is very small. A slight external interference will affect the measurement accuracy. Therefore, the transmitter shell, shielded wire, measurement conduit and transmitter All pipelines must be grounded, and a separate grounding point must be set up, and must not be connected to the common ground wire of motors, electrical appliances, or the upper and lower water pipes. The converter part has been grounded through the cable, so do not ground it again, so as to avoid interference caused by different ground potentials. How to choose the grounding ring of the electromagnetic flowmeter? At present, the electromagnetic flowmeter is mainly designed for the water metering trade of water supply enterprises, and has the ability of waterproof, anti-corrosion, anti-interference and lightning protection. There are no moving parts and no blocking parts in the pipeline of the electromagnetic flowmeter, and there is almost no additional pressure loss in the measurement. Regarding the selection of the grounding ring, the following is a brief introduction. 1. Protective ring: F46 lining sensor should choose a protective grounding ring, which is fixed on the flange by screws to protect the flanging of the lining from damage. 2. The material of the grounding ring is stainless steel 1Cr18Ni9Ti, which can be specified separately when ordering for special requirements. 3. Standard grounding ring: On plastic and cathodic protection pipes whose inner and outer walls are insulated to prevent electrolytic corrosion, grounding rings must be installed on both sides of the sensor. 4. Neck protection ring: If the medium is highly abrasive, a neck protection ring should be used to protect the lining. Using electromagnetic flowmeter to measure the volume flow of liquid is not affected by the temperature, pressure, density, viscosity and other parameters of the liquid, so there is no need for correction calculation or parameter compensation. Therefore, electromagnetic flowmeters are widely used in various industrial production departments such as chemical industry, petroleum metallurgy, chemical fiber, and cement manufacturing. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Why Magnetic Flow Meter Grounding Matters'

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