There are some issues to be aware of regarding the purchase of pressure transmitters. First, the wetted material. We should consider the medium measured by the pressure transmitter. The material of the contact medium of the general pressure transmitter is made of 316 stainless steel. If your medium is not corrosive to 316 stainless steel, then basically all the pressure changes. The transmitter is suitable for your measurement of the pressure of the medium. If your medium is corrosive to 316 stainless steel, then we need to use a chemical seal, which not only can measure the pressure of the medium, but also effectively prevent the medium from contacting the wetted part of the pressure transmitter. Protect the pressure transmitter and extend the life of the pressure transmitter. Second, the pressure transmitter accuracy level. Each type of electronic measuring instrument will have accuracy error, but the accuracy level of each country is different. For example, the accuracy of national standards such as China and the United States is the best part of the linearity of the sensor, that is, we usually The accuracy of the measurement range is between 10% and 90%; the accuracy of the European standard is the worst part of the linearity, which is what we usually call the 0 to 10% and 90% to 100% of the measurement inverse. The accuracy between the two. If the accuracy of the European standard is 1%, the accuracy of the standard in China is 0.5%. The accuracy of the pressure transmitter developed by Shanghai Jingta Instrument Co., Ltd. is 0.2. For pressure transmitters, please purchase refined tower products. The maximum range of sensor measurement is 70% of the sensor's full scale is the best, that is, now we need to measure the pressure of 70bar, we should choose the pressure transmitter range of 100bar. Please choose the precision tower for the pressure transmitter. Fourth, the output signal. At present, due to various collection needs, there are many kinds of output signals of pressure transmitters on the market, mainly 4~20mA, 0~20mA, 0~10V, 0~5V, etc., but the more commonly used is 4~20mA and 0~10V two kinds. Among the output signals I mentioned above, only 4~20mA is two-wire system (we say that the output is several lines without grounding or shielding), and the others are three-wire system. Fifth, the medium temperature. Since the signal of the pressure transmitter is partially converted by the electronic circuit, in general, the temperature of the pressure transmitter is -30 to +100 degrees. If the temperature is too high, we generally use a condensation bend to cool. The medium, so the cost of producing a high temperature pressure transmitter for the manufacturer will be much lower. Sixth, measure the medium. Generally, we measure relatively clean fluids. We can use standard pressure transmitters directly. If the medium you are measuring is crystallized or viscous, we usually use external diaphragms. Or use with a chemical seal, this will effectively prevent the medium from blocking the pressure measuring hole. Seventh, others. After confirming the above five parameters, we must also confirm the process connection interface of your pressure transmitter and the supply voltage of the pressure transmitter; if it is used in special occasions, the explosion protection and protection level should also be considered. Concerned about surprises Label: How to choose the most suitable pressure transmitter? Previous: G-type single-screw pump is classified according to different materials. Next: Guidelines for selecting dust-removing skeletons Melamine Board For Furniture,Vanities Cabinets,Mirror Bathroom Cabinet,Solid Wood Bathroom Cabinets PRO CABINET SOLUTION PTY LTD , https://www.pcscabinet.com.au
Third, the range of the range. 
How to choose the most suitable pressure transmitter?