Pressure Sensors – The Widely Used Sense of the Heart

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How to choose the right ceramic core pressure sensor

When choosing a ceramic core pressure transmitter correctly, you should pay attention to the following points: 1. What kind of pressure should be measured by the pressure transmitter Generally speaking, it is necessary to choose a transmitter with a pressure range that is about 1.5 times larger than the maximum value. This is mainly due to the fact that in many systems, the maximum value of the measured pressure in the system is determined first. In particular, in the process of water pressure measurement and processing, there are peaks and continue to fluctuate up and down irregularly, and this instantaneous peak can destroy the pressure sensor. Continued high pressure values or slightly exceeding the transmitter's calibrated maximum will shorten the life of the sensor, and in doing so, will also reduce accuracy. A shock absorber can then be used to reduce the pressure burr, but this will reduce the response speed of the sensor. Therefore, when selecting a transmitter, it is necessary to fully consider the pressure range, accuracy and stability. 2. What kind of pressure medium solvent or corrosive substance will not destroy the data in the transmitter that is in direct contact with these media. These factors will determine whether to choose a direct separator film and information that is in direct contact with the medium. Viscous liquids and mud will block the pressure interface. 3. How much accuracy does the pressure transmitter need to be nonlinear, and there are those who determine the accuracy. Hysteresis, non-repeatability, temperature, zero bias scale, influence of temperature. But it is mainly caused by nonlinearity, hysteresis, non-repeatability, and the higher the accuracy, the higher the price. 4. the temperature range of the pressure transmitter One of the temperature ranges is the normal working temperature, usually a transmitter will calibrate two temperature sections. The other is the temperature compensation range, the normal operating temperature range refers to the temperature range of the transmitter when it is not damaged in the working state, and the performance indicators of its application may not be reached when the temperature compensation range is exceeded. 5. the pressure transmitter needs to adhere to the stability after overtime This kind of advance work can reduce all kinds of troubles that will occur in future use. Most transmitters will "drift" after overwork, so it is important to understand the stability of the transmitter before purchasing. 6. the packaging of the pressure transmitter is often easy to ignore the packaging of the rack and the transmitter. However, this will gradually reveal its disadvantages in future use. When purchasing a transmitter, it is necessary to consider the working environment of the transmitter in the future, what the humidity is, how to install the transmitter, whether there will be strong impact or vibration, etc. 7. What kind of connection is used between the pressure t