How to solve the large shaking of the output signal of the intelligent electromagnetic flow meter

Abstract: The information on how to solve the large fluctuation of the output signal of the intelligent electromagnetic flowmeter is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. How to solve the large shaking of the output signal of the electromagnetic flowmeter? On-site problem performance: When the measured liquid in the sensor flows normally and stably, the signal output of the instrument fluctuates greatly. There are the following reasons. 1. External electrical and magnetic interference on the signal converter. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to solve the large fluctuation of the output signal of the intelligent electromagnetic flowmeter. How to solve the large shaking of the output signal of the electromagnetic flowmeter? On-site problem performance: When the measured liquid in the sensor flows normally and stably, the signal output of the instrument fluctuates greatly. There are the following reasons. 1. The influence of external electrical and magnetic interference on the signal converter, there are many sources of interference, including power supply interference (50hz power frequency interference), electromagnetic interference caused by motor motors, common mode interference superimposed on the signal, and so on. From the perspective of the way of interference into the signal converter, it is mainly based on the power supply circuit and the signal circuit. Converters generally return to normal when the source of interference disappears. 2. The influence of external interference on the sensor electrodes. When there is stray current in the sensor, the ionosphere is attached to the electrode, or there are a lot of interference signals on the signal line due to the problem of on-site grounding, the signal processing circuit will not be able to obtain the actual signal from the noise. Signal. When the liquid is a slurry containing more variable particles, the particles in the measured liquid will wash the electrode, and a large number of interference signals will appear in the signal, and the signal processing circuit will also be unable to obtain the actual signal from the noise. 3. The sensor is not full or liquid Contains air bubbles, if one electrode is not in contact with the liquid being measured for the above reasons, the signal on the electrode will be a cluttered signal. Electromagnetic flowmeters have high measurement accuracy. There is no obstruction in the measurement pipeline, so there is no additional pressure loss; although the electromagnetic flowmeter is relatively reliable, it will not be damaged under normal circumstances, but due to its principle, the electrode surface of the sensor has been in contact with the liquid. After a long time, the electrode surface more susceptible to contamination. Therefore, in general, the electromagnetic flowmeter is recommended to be removed to clean the electrode once a year to a year and a half to ensure the measurement accuracy of the entire flowmeter when the customer has the conditions to disassemble it. Among the common problems of electromagnetic flowmeters, the problems generated during the trial operation stage are generally caused by installation problems or selection problems, while the problems that occur during normal operation are generally caused by changes in working conditions or the emergence of new interference sources. of. Therefore, the problem during normal operation can generally be attributed to the problem of the anti-interference ability of the instrument. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to solve the large shaking of the output signal of the intelligent electromagnetic flow meter'
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