There are many types of media measured by the flowmeter, which are common type and corrosive. For corrosive media, the flowmeter must be selected for anti-corrosion and anti-corrosion treatment. The following technical Xiaobian of the Shunda flowmeter manufacturer will explain the flow measurement of the corrosive medium of the flowmeter. It is explained as follows: 1. Corrosion Phenomenon corrosion is a phenomenon in which metal is destroyed due to chemical action in its environment. All metals and alloys can be resistant to certain conditions, but in others it is sensitive to corrosion. In general, industrial metal materials that are resistant to corrosion in all environments are non-existent. 2. The corrosiveness of corrosive media to the flow meter is a serious threat to the flow meter: a. Corrosive media corrodes key components that are in direct contact with the fluid flow meter and cause damage and loss of functionality. For example, corrosion caused the diaphragm of the differential pressure transmitter to be damaged, and the silicone oil leaked completely and failed. Electromagnetic flowmeter electrode leakage due to corrosion caused by the media, resulting in the excitation coil burned. b. The key components of the flow measurement instrument are subject to corrosion by corrosive media for a long time to change the geometric dimensions, resulting in reduced accuracy of the instrument. For example, when the rotor in a rotameter is corroded by a fluid, the external dimensions are reduced, resulting in a lower flow indication. In another example, the vortex generating body in the vortex flowmeter is corroded by the fluid and the width dimension is reduced, and the surface of the inflow surface becomes rough, thereby causing the flow coefficient to change. c. Shorten the life of the meter. For example, parts such as tapered tubes in metal tube rotameters were worn out after being used for several years. d. Leakage of corrosive media, if not detected in time, and timely handling, can also lead to safety and personal accidents. 3, measures of fluid corrosion in flow measurement a. Regularly change the corrosiveness of the instrument corrosive medium to the metal, the situation is various. Some of the corrosion rate is rapid, ie, total corrosion, some corrosion is slight, and the speed is very slow, ie local corrosion. In the selection of instrumentation, specific analyses should be made on specific conditions and then decisions made. b. Avoid light and light. The evasiveness of light is based on the in-depth understanding of the process flow and the relevant media characteristics, and the reasonable selection of the measurement program can also achieve the purpose of measurement or control of the production process, avoiding corrosive sites, and selecting less corrosiveness. The site, or even change the type of parameters being adjusted. The above is "flow measurement of flowmeter corrosive medium" and hopes to help everyone. After more than ten years of development, Heshun Flowmeter manufacturers have always been operating in good faith, taking customer needs as the priority, and quality assurance as the priority. Constant efforts to develop new technologies, improve product performance, use high quality materials, and meticulous product quality, which is why we have received unanimous praise from our customers. All Shunda employees look forward to flying with you.
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