In the actual application in the field, pressure transmitters due to different working conditions, it is necessary to purchase pressure transmitters of different structures. Today I would like to introduce to you the difference between the structure of an economical pressure transmitter and an isolated pressure transmitter. Economical pressure transmitter: The measuring membrane box of the economical pressure transmitter is one, which directly feels the pressure and differential pressure of the measured medium; The measuring diaphragm of the economical transmitter receives the pressure of a stable liquid (generally silicone oil), and this stabilizer is sealed in the middle of the two diaphragms, the diaphragm that accepts the measured pressure is the outer diaphragm, and the diaphragm of the economic diaphragm box is the inner diaphragm, and when the pressure signal is received on the outer diaphragm, the pressure of the outer diaphragm is transmitted to the ordinary diaphragm through the transmission of silicone oil, and the pressure felt by the outer diaphragm is measured. Isolated pressure transmitter: isolated pressure transmitter is also known as flange pressure transmitter, the specific structural principle is to add flange type to the opening on the equipment under test, after installation, its induction diaphragm is part of the equipment wall, so that it will not take out the measured medium, the biggest advantage is that it will not cause crystallization blockage, the measurement medium of the pressure transmitter is generally very special, it is easy to produce crystallization after leaving the measuring equipment, if the economic transmitter is used, the medium needs to be taken out, which can easily lead to the blockage of the impulse pipe and the diaphragm chamber and affect the normal work, so it is necessary to choose an isolated pressure transmitter at this time。

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