Industry information

What kind of pressure does the pressure transmitter measure

2020-11-10 18:24:22 grace

What kind of pressure should the pressure transmitter measure: First determine the maximum value of the measured pressure in the system. Generally speaking, you need to select a transmitter with a pressure range that is 1.5 times larger than the maximum value. This is mainly because in many systems, especially in water pressure measurement and processing, there are peaks and continuous irregular up and down fluctuations. This instantaneous peak can destroy the pressure sensor, and the continuous high pressure value or slightly exceeds the transmitter Calibrating the maximum value will shorten the life of the sensor, however, the accuracy will decrease due to this. Therefore, a buffer can be used to reduce the pressure glitch, but this will reduce the response speed of the sensor. So when choosing a transmitter, we must fully consider the pressure range, accuracy and stability. What kind of pressure medium: What we have to consider is the medium measured by the pressure transmitter. Viscous liquids and mud will block the pressure interface. Will the solvent or corrosive substances damage the transmitter? Materials in contact. The above factors will determine whether to choose a direct isolation membrane and a material in direct contact with the medium. The material of the contact medium part of the general pressure transmitter is 316 stainless steel. If your medium is not corrosive to 316 stainless steel, then basically all pressure transmitters are suitable for you to measure the pressure of the medium. The medium is corrosive to 316 stainless steel, so we need to use a chemical seal, which can not only measure the pressure of the medium, but also effectively prevent the medium from contacting the wetted part of the pressure transmitter, thereby protecting the pressure change The transmitter extends the life of the pressure transmitter.