Several key points of maintenance in the state of electromagnetic flow meter shutdown

Abstract: Several key information for maintenance of electromagnetic flowmeters in the shutdown state are provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. When the electromagnetic flowmeter is not in use, we must take scientific and reasonable maintenance and maintenance methods for the electromagnetic flowmeter. Many people find that after purchasing the electromagnetic flowmeter and using it for a period of time, it is found that the measurement data is inaccurate when it is used again. Actually this. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following are the details of several key articles on maintenance of electromagnetic flowmeters in the state of shutdown. When the electromagnetic flowmeter is not in use, we must take scientific and reasonable maintenance and maintenance methods for the electromagnetic flowmeter. Many people find that after purchasing the electromagnetic flowmeter and using it for a period of time, it is found that the measurement data is inaccurate when it is used again. In fact, this is not the quality problem of the electromagnetic flowmeter itself. It is because the user does not maintain and maintain it according to the method in the manual. This leads to inaccurate measurement of the instrument, so it is crucial to learn how to maintain the instrument. 1. Zero point inspection and adjustment of electromagnetic flowmeter maintenance Before the electromagnetic flowmeter is put into operation, the zero point must be adjusted when the electromagnetic flow sensor is full of liquid and static after power-on. After being put into operation, it is also necessary to periodically stop the flow for zero-point inspection according to the conditions of use, especially for precipitation, easily polluted electrodes, and non-cleaning liquids containing solid phase. Compared with the rectangular wave shock, the electromagnetic flowmeter of the AC excitation method is more prone to zero drift, so more attention should be paid to inspection and adjustment. Give an example of an application error where the deposited layer fails. One is that in oil drilling and cementing engineering, the total flow of cement slurry is an important process parameter, and high-pressure electromagnetic flowmeters are often used. The instrument is used intermittently. After use, rinse the sensor measuring tube with clean water, and the remaining time is empty. Due to incomplete cleaning, the residual cement slurry on the inner wall of the measuring tube solidified into a thin layer, which accumulated to form an insulating layer covering the entire electrode surface in the past two months, resulting in abnormal operation and eventually unable to work. The other is the electrolytic cutting process test device. The electromagnetic flowmeter is used to control the flow of saturated brine. After a period of intermittent use, it is found that the flow signal gradually weakens, and the signal is zero after 2 months. The reason is that the iron oxide deposition tube wall  forms a short circuit during the electrolytic cutting process. Clear the stratification and return to normal immediately. Second, how to extend the life of the electromagnetic flowmeter First of all, the installation of the electromagnetic flowmeter should meet the requirements of the manufacturer's manual and the requirements of relevant national standards, otherwise the service life will not be too long, so the installation must be paid attention to. Always check the grounding system, including grounding wire, grounding ring, grounding terminal, etc., whether the contact is good, and whether there is strong current or electromagnetic induction in the grounding system. 2. Pay attention to the waterproofness of the instrument; wiring ports, protection tubes, sealing joints, and case seals; 3. Regularly check the lining of the electromagnetic flowmeter, and use it for a long time, especially the fluid with impurities in the medium will easily cause serious wear to the lining 4. Regularly check the pipeline installation, such as whether there is external leakage, pipeline vibration, whether the bolts are loose, and whether the support is reliable; 5. Regularly check the anti-corrosion and heat preservation of the flowmeter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Maintenance of the electromagnetic flow meter in the state of shutdown'

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