Summary of electromagnetic flowmeter electrode cleaning method for the user

by:Kaidi Sensors     2020-10-29
Intelligent electromagnetic flowmeter is used in industrial production in measuring flow rate for common instrument type, because it has many excellent characteristics, was liked by the masses of users. In the process of using the electrode is often due to the influence of the measured medium adhesion dirt, and to measure the amount of deviation, so users need to master the related method of electrode electromagnetic flowmeter, mastering this knowledge to improve the efficiency of our maintenance, prolong the service life of our measuring instrument would help. We know that if the electromagnetic flowmeter measurement medium in a dirty state for a long time, will cause the electromagnetic flow meter in use after a period of time, electrode produce scale. If fouling material conductivity and electrical conductivity of the measured medium is different, can cause measurement error. And sludge, oil pollution of electrode, also can make the instrument output swing and drift. Therefore, on a regular basis for maintenance and cleaning of the intelligent electromagnetic flowmeter electrode is we in the process of using the flow meter has to be a work and mastering a skill. Embellish of instrument science and technology co. , LTD. Installation and maintenance of the engineers in the long run, we introduce several kinds of electromagnetic flowmeter are summarized electrode cleaning method for your reference learning. Electromagnetic flowmeter electrode cleaning method usually has the following kinds: a, machinery QingChuFa QingChuFa by installing special mechanical structure on the electrode to achieve clear electrode. There are two forms: one is to use mechanical abrasion. Made from stainless steel with a thin shaft scraper, through a hollow electrode spatula derivation, fine between shaft and the hollow electrode adopts mechanical seal in order to prevent the outflow of medium, then form the mechanical except the scraper. When rotating thin axis from the outside, scraper to tip plane turning, shave their dirt. This in addition to the scraper can be manually, also can use the automatic shave their fine motor drive shaft. Domestic electromagnetic flowmeter of Chinese and western AnYunYi scraper type electromagnetic flowmeter has this kind of performance, and stable performance, easy to operate. Another is in a tubular electrode, mount away dirt with the steel wire brush, shaft wrapped in sealed & other; O” Form circles, in order to prevent the fluid leaks. The cleaning device often need someone to pull wire brush to clean the electrode, is not very convenient to operate, not xi 'an YunYi scraper type electromagnetic flowmeter is convenient. Second, the metal electrodes of the electrochemical method for intelligent electromagnetic flowmeter in electrolyte electrochemical phenomena exist in the fluid. According to the principle of electrochemistry, electrode electric field and fluid interface, electrode with fluid interface is electrode/fluid and is caused by the electric double layer. For electrodes and fluid interface electric field of the study found that the substance molecules, atoms, or ions adsorption phenomena in the interface has a rich or poor, and found that most of the inorganic anion surface active substances, as the typical ion adsorption rule, and inorganic cationic surface active is small. Therefore the electrochemical cleaning electrode anion adsorption is only considered. Anion adsorption and there is a close relationship between electrode potential and adsorption mainly in charge potential correction of potential range than zero, the electrode surface with opposite sign charge. On the electrode surface with no charge, when the remaining charge density slightly larger, electrostatic repulsion is greater than the adsorption force, anionic quickly stripping, this is the principle of electrochemical cleaning. 3, electric shock tees this method USES ac high voltage to the electrodes and the medium between regularly, usually add 30 ~ 100 v. Because the electrodes are attached, the surface contact resistance, almost focused on attachments the applied voltage, high voltage attachments to breakdown, will then be flow away. Total safety, use electric shocks tees must be interruption of flowmeter measurement, signal lines disconnect between sensor and converter, power outage case ac high voltage directly on the sensor signal output terminal for cleaning. Four, ultrasonic cleaning method, ultrasonic cleaning method is to use the principle of ultrasonic high frequency vibration, ultrasonic generator to produce 45 ~ 65 KHZ ultrasonic wave voltage to the electrode, the ultrasonic energy concentrated on the electrodes in contact with the medium, thus the ability of using ultrasound to shatter bilge, achieve the purpose of cleaning. Embellish of instrument science and technology co. , LTD. As an enterprise of production and sales of electromagnetic flowmeter, long-term commitment to provide stable electromagnetic flowmeter products for domestic market. Willing to work with friends from all walks of life together to promote China's industrialization process.
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