Electrode cleaning method of electromagnetic flow meter

Abstract: The electrode cleaning method information of electromagnetic flow meter is provided by the excellent flow meter and flow meter manufacturer and quotation manufacturer. Only regular maintenance of any measuring instrument can ensure the accuracy of use and prolong the service life of the product. Electrodes in electromagnetic flowmeters are its most important components, and the medium measured by electromagnetic flowmeters is in a relatively dirty state for a long time, and it will. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the details of the article on the electrode cleaning method of electromagnetic flowmeters. Only regular maintenance of any measuring instrument can ensure the accuracy of use and prolong the service life of the product. Electrode is the most important part of electromagnetic flowmeter. The medium measured by electromagnetic flowmeter is in a dirty state for a long time, which will lead to scaling on the electrode. The technical personnel of the flowmeter manufacturer have summarized the long-term work experience. Several methods of electrode cleaning of electromagnetic flowmeter are provided for your reference and study. 1. Mechanical removal method The mechanical removal method realizes electrode removal by installing a special mechanical structure on the electrode. There are currently two forms: one is to use a mechanical scraper. A blade with a thin shaft is made of stainless steel, and the blade is drawn out through a hollow electrode. A mechanical seal is used between the thin shaft and the hollow electrode to prevent the outflow of the medium, so a mechanical scraper is formed. When the thin shaft is rotated from the outside, it is rotated against the flat surface of the electrode end to scrape off the dirt. This scraper can be used manually or automatically with a motor-driven thin shaft. 2. Electrochemical method The metal electrode of the intelligent electromagnetic flowmeter has an electrochemical phenomenon in the electrolyte fluid. According to the principle of electrochemistry, there is an interfacial electric field between the electrode and the fluid, and the interface between the electrode and the fluid is caused by the electric double layer existing between the electrode/fluid phase. The study of the electric field at the interface between the electrode and the fluid found that the molecules, atoms or ions of the substance have enriched or poor adsorption at the interface, and found that most inorganic anions are surface active substances with a typical ion adsorption law, while the surface of inorganic cations activity is small. Therefore, electrochemical cleaning of electrodes only considers the case of anion adsorption. The adsorption of anions is closely related to the electrode potential, and the adsorption mainly occurs in the potential range that is more positive than the zero-charge potential, that is, the electrode surface with the opposite sign. On the electrode surface of the same charge, when the residual charge density is slightly larger, the electrostatic repulsion is greater than the adsorption force, and the anions are quickly desorbed, which is the principle of electrochemical cleaning. 3. Electric breakdown method This method uses AC high voltage to be regularly added between the electrode and the medium, generally 30~100V. Because the electrode is attached, its surface contact resistance becomes larger, and the applied voltage is almost concentrated on the attached object. The high voltage will break down the attached object and then be washed away by the fluid. For overall safety, the use of electric breakdown method must be to clean the AC high voltage directly on the sensor signal output terminal when the flowmeter is interrupted for measurement, the signal line between the sensor and the converter is disconnected, and the power is cut off. Fourth, ultrasonic cleaning method Ultrasonic cleaning method is to use the principle of ultrasonic high-frequency vibration, add the ultrasonic voltage of 45~65kHz generated by the ultrasonic generator to the electrode, so that the energy of the ultrasonic wave is concentrated on the contact surface between the electrode and the medium, so as to use the ultrasonic wave The ability to crush the dirt to achieve the purpose of cleaning. After more than ten years of development, the flowmeter manufacturer has always been based on honest operation, customer demand first, and quality assurance as the priority. Continuous efforts are made to develop new technologies, improve product performance, use high-quality materials, and be meticulous about product quality, which is why it has been well received by customers. All my colleagues look forward to flying with you. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Electrode cleaning method of electromagnetic flow meter'
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