How to use corrosive liquids to resist corrosion, strong acid and alkali resistant flowmeters are related to the service life of flowmeters. Flowmeters are a kind of instrument used to measure the flow of fluids in pipelines or open channels. They are widely used in oil and gas, petrochemicals, and water. Processing, food and beverage, pharmaceutical, energy, metallurgy, pulp and paper and building materials industries. The following is a detailed explanation for different measurement media:
1. For measuring acidic medium, it can use oval gear flowmeter made of acid-resistant material, vortex flowmeter and turbine flow sensor. The parts in contact with the medium are acid-resistant materials, which can resist general acidic substances and can also be used for measurement. Acidic medium.
Second, measure corrosive gases. A throttling differential pressure flow meter is typically used to line the pipe diaphragm with a corrosion resistant material. Early use of corrosion-resistant molybdenum-containing stainless steel in the diaphragm, and later attached a layer of PTFE separator on the diaphragm, but still easy to be corroded, our company continues to improve the diaphragm material has not solved the fundamental problem, and later changed to The solution of isolating the common meter from the corrosive medium with the spacer liquid is strong, and the use of the partition liquid fluorine oil is expensive, which greatly increases the production cost of the meter.
Third, according to the use of the environment to develop a measurement plan. Some special working conditions, although the choice of corrosion-resistant flowmeter can not solve the problem, then you need to understand the process more deeply, choose to avoid the corrosion of the flow measuring instrument, such as the sewage treatment plant flow measurement, you can consider The acid or alkali is neutralized in the sewage and then metered to avoid serious corrosion of the flowmeter.
4. Measure the conductive medium. An electromagnetic flowmeter with a lining material that is resistant to corrosion can be used .
5. Measuring non-conductive media. Clip-on ultrasonic flowmeters that are not in contact with the media can be selected to measure a variety of acid-alkaline corrosive media.
Each company's products and usage environment are different, so it is still necessary to choose the right flow meter according to the specific measurement medium and working conditions. In addition to the quality of the instrument itself, the provision of process data and the rationality of the installation, use and maintenance of the instrument are also important.
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