Xian electromagnetic flowmeter | How to adjust electromagnetic flowmeter?

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How to clean the electrodes of an electromagnetic flowmeter?

One of the four cleaning methods for electromagnetic flowmeter electrodes: electrochemical method: Metal electrodes exhibit electrochemical phenomena in electrolyte fluids.. According to the principle of electrochemistry, there is an interface electric field between the electrode and the fluid, and the interface between the electrode and the fluid is caused by the double layer of the electrode/fluid phase. The study of the electric field at the interface between electrodes and fluids has found that molecules, atoms, or ions of substances exhibit enrichment or depletion adsorption phenomena at the interface, and it has been found that most inorganic anions are surface active substances with typical ion adsorption patterns, while the surface activity of inorganic cations is very low. Therefore, electrochemical cleaning of electrodes only considers the adsorption of anions. The adsorption of anions is closely related to the electrode potential, and adsorption mainly occurs in the potential range corrected by the zero charge potential, that is, on the electrode surface with opposite charges. On the surface of electrodes with the same charge, when the residual charge density is slightly higher, the electrostatic repulsion is greater than the adsorption force, and anions quickly desorb. This is the principle of electrochemical cleaning. Two of the four cleaning methods for electromagnetic flowmeter electrodes: mechanical cleaning method: Mechanical cleaning method is achieved by installing a special mechanical structure on the electrode to remove the electrode. There are currently two forms: one is to use a mechanical scraper, which is made of stainl

ess steel and has a thin shaft scraper. The scraper is led out through a hollow electrode, and a mechanical seal is used between the thin shaft and the hollow electrode to prevent the medium from flowing out, thus forming a mechanical scraper. When the thin shaft is rotated from the outside, the scraper rotates tightly against the flat surface of the electrode end to remove dirt. This scraper can be manually operated or driven by a motor to automatically scrape the fine shaft. The scraper type electromagnetic flowmeter from Xian Yunyi, one of the domestically produced electromagnetic flowmeters, has such stable performance and easy operation. Another method is to install a wire brush for removing dirt in the tubular electrode, with the shaft wrapped in a sealed "O" ring to prevent fluid leakage. This cleaning device requires someone to frequently pull the wire brush to clean the electrodes, which is not very convenient to operate and does not have the convenience of a scraper type electromagnetic flowmeter. The third of the four cleaning methods for electromagnetic flowmeter electrodes: ultrasonic cleaning method: apply the 45~65kHz ultrasonic voltage 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, and then use the ability of the ultrasonic wave to crush the dirt and achieve the purpose of cleaning. Four cleaning methods for electromagnetic flowmeter electrodes: electrical breakdown method: This method uses alternating high voltage electricity to be periodically applied between the electrode and the medium, usually adding 30-100V. As the electrode is attached, its surface contact resistance incre

Xian electromagnetic flowmeter | How to adjust electromagnetic flowmeter?

How to clean the electrodes of an electromagnetic flowmeter?

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