Pressure transmitter selection

1. What kind of pressure does the transmitter measure

First determine the maximum value of the measured pressure in the system, in general, it is necessary to select a transmitter with a pressure range about 1.5 times larger than the maximum value. This is mainly due to the fact that in many systems, especially water pressure measurement and processing, there are peaks and continuous irregular ups and downs, and this instantaneous peak can destroy the pressure sensor. Persistently high pressure values or slightly exceeding the transmitter's calibrated maximum value will shorten the life of the sensor, and doing so will also reduce accuracy. A buffer can then be used to reduce the pressure burr, but this will reduce the sensor's response speed. Therefore, the pressure range, accuracy and stability should be fully considered when choosing a transmitter.

2, What kind of pressure medium

Viscous liquids and mud will block the pressure interface, and solvents or corrosive substances will not destroy the materials in direct contact with these media in the transmitter. These factors will determine whether to choose a direct isolation film and a material in direct contact with the medium.