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Structure and skill of pressure transmitters for corrosive media
Nov 01, 2018

Pressure transmitters are already a very common device in the current industry. With a wide range of applications, pressure transmitters are exposed to more measurement media, such as those with general corrosive and highly corrosive media. So how do you prevent the transmitter from being corroded at this time? With the birth of this problem, various manufacturers began day-to-day scientific research, now let us introduce the mainstream anti-corrosion measures. The pressure transmitters are now available in stainless steel joints (304 stainless steel, 316L stainless steel, etc.) and stainless steel chambers. This stainless steel material has been able to withstand most corrosive media and can monitor almost all 316L compatible media. Now when users purchase pressure transmitters, manufacturers need to know the measurement medium to judge which structural materials are selected according to the measurement medium, such as joints and cavities of 304 stainless steel and 316L stainless steel. If a strong corrosive medium is encountered, we can also isolate the corrosion by means of an isolating diaphragm. For example, the diaphragm pressure transmitter has an isolation structure of molybdenum 2 titanium and bracts, and methyl silicone oil is used between the diaphragm and the ballistic tube. Transfer pressure, if the diaphragm material is not resistant to corrosion, a layer of F46 diaphragm can be added, but the instrument sensitive bottom is reduced. F46 can also be used directly as the isolation diaphragm, and the transfer liquid can be selected with fluorine oil, which can play a double isolation effect.