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1. Function The grounding ring of the electromagnetic flowmeter comes into contact with the medium (the substance that plays a decisive role) through the grounding electrode; then, via the grounding ring, it is connected to the instrument—also known as the flange disc or flange grounding—to achieve electrical equilibrium with the ground and thereby eliminate interference. In addition to measuring the volumetric flow rate of ordinary conductive liquids, sewage flow meters can also be used to measure the volumetric flow rate of highly corrosive liquids such as strong acids and strong bases, as well as of homogeneous liquid-solid suspension fluids like sludge, pulp, and paper pulp. It is widely used for flow measurement in various industrial sectors such as petroleum, chemicals, metallurgy, light textiles, papermaking, environmental protection, and food processing, as well as in areas like municipal management, water conservancy construction, and river dredging. 2. Use of grounding rings Grounding rings are often not suitable in certain situations; for example, when measuring highly corrosive and erosive media (the substances that play a decisive role), pipes are usually made of polyvinyl chloride or lined with tetrafluoroethylene, and the electrodes used are made of precious metals. This makes it impossible to use grounding rings, especially for large-diameter pipes, as the cost would be too high. The electromagnetic flowmeter is a new type of flow measurement instrument that developed rapidly in the 1950s and 1960s along with the advancement of electronic technology. An electromagnetic flowmeter is an inductive instrument manufactured based on Faraday’s law of electromagnetic induction, used to measure the volumetric flow rate of conductive media within a pipe. The function of an electromagnetic flowmeter is to generate a uniform direct current or alternating current magnetic field. The DC magnetic circuit is implemented using permanent magnets, which have the advantage of a relatively simple structure and are less affected by alternating magnetic fields. However, they can cause polarization of the electrolyte fluid flowing through the measurement conduit, with positive ions surrounding the negative electrode and negative ions surrounding the positive electrode – that is, a polarization phenomenon of the electrodes. This leads to an increase in the internal resistance between the two electrodes, thereby severely affecting the proper operation of the instrument. In this case, a three-electrode setup is generally chosen, with two electrodes used for measurement and the other one for grounding. Generally, if the pipe is made of a metallic material, it may not be necessary to install a grounding ring. The flow rate (measured in cubic meters per second) can also be taken into account by connecting a flange disc or rim to the pipe and then grounding it, which also works well, especially in cases of large diameters. If the diameter is small, it doesn’t matter whether a grounding ring is used or not; the cost difference won’t be significant. Additionally, some users test with media that are not highly corrosive or erosive (the substances that play a decisive role), but their pipes are made of non-metallic materials; in such cases, it is necessary to use grounding rings, as grounding is very important from an electromagnetic perspective. Site characteristics: The interference caused by the radiation of waves and particles is fatal to electromagnetic fields; while we can take certain measures to shield against electric fields, we are unable to shield against magnetic fields. Therefore, electromagnetic flowmeters must be installed away from strong magnetic fields. Daily inspection and maintenance of electromagnetic flowmeters (unit: cubic meters per second). As a new type of flow measurement instrument that was developed in the mid-20th century, electromagnetic flowmeters have seen significant improvements in performance since the advent of key-controlled low-frequency rectangular wave excitation methods, which has led to their wider use. Next, let’s take a look at how such flow meters are maintained in daily use. 1. Before and after putting the electromagnetic flow meter (unit: cubic meters per second) back into operation, it is necessary to conduct zero-point checks and adjustments. Specifically, it involves adjusting the zero point after powering on, with the sensor filled with liquid and at rest. Prevent drift of the zero point. II. Conduct periodic visual inspections of electromagnetic flowmeters, and establish standards or methods for such inspections. The sewage flow meter consists of an electromagnetic flow sensor and a converter. It operates based on Faraday’s law of electromagnetic induction, and is used to measure the volumetric flow rate of conductive liquids with a conductivity greater than 5 μS/cm; it is an inductive instrument for measuring the volumetric flow rate of conductive media. III. Inspect the environment surrounding the electromagnetic flow meter (unit: cubic meters per second) to ensure that the instrument is free from water intrusion, dust, electromagnetic interference, and that the wiring is in good condition. The function of an electromagnetic flowmeter is to generate a uniform direct current or alternating current magnetic field. The DC magnetic circuit is implemented using permanent magnets, which have the advantage of a relatively simple structure and are less affected by alternating magnetic fields. However, they can cause polarization of the electrolyte fluid flowing through the measurement conduit, with positive ions surrounding the negative electrode and negative ions surrounding the positive electrode – that is, a polarization phenomenon of the electrodes. This leads to an increase in the internal resistance between the two electrodes, thereby severely affecting the proper operation of the instrument. The electromagnetic flowmeter is a new type of flow measurement instrument that developed rapidly in the 1950s and 1960s along with the advancement of electronic technology. An electromagnetic flowmeter is an inductive instrument manufactured based on Faraday’s law of electromagnetic induction, used to measure the volumetric flow rate of conductive media within a pipe. China Dewey Instrument Technology. In summary, the daily inspection and maintenance of electromagnetic flowmeters are relatively simple; in addition, regular cleaning is required depending on the deposition situation of the measured medium (the substance that plays a decisive role). For more information, please visit the company’s official website at http://www.yb1518.com/. Please keep this link when reproducing the content!