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Home>News>The type of pressure core and their respective advantages
December 19, 2022
The type of pressure core and their respective advantages
The Pressure Core material of the Pressure Sensor is mainly technical requirements for stability. In addition to the nature of the material, there are also requirements for layout, processing process and assembly process. In terms of material perspective, the core body of the pressure sensor is: the core of the single crystal silicon, the core of the polysilicon, the core of the ceramic, the core of the crystal, the metal core, the core of the polyimide, and so on.
The single crystal silicon core of the pressure sensor, the SOI structure of the single crystal silicon film, can carry higher working temperature, better working sensitivity, micro -machine processing single crystal silicon, which can improve stability and reproduction, eliminate lag.
The core of the polysilicon of the stress sensor deploy the polysilicon film on the silicon layer of the silicon, which not only uses the excellent mechanical characteristics of the silicon, but also ensures the good insulation between the pressure -sensitive resistance and the substrate, which greatly improves the temperature characteristics of the device.
The core body of the ceramics of the pressure sensor exceeds 1 million pressure circulation, extremely low temperature drift, excellent linear accuracy, 300%overload pressure, linear accuracy and overload pressure have good performance.
The core of the crystal of the pressure sensor adopts a sound fork -type crystal unit, which can obtain a high oscillating frequency of high stability, thereby realizing high precision and high resolution capabilities.
The pressure sensor uses a polytide core, and the relative resistance changes and the pressure are good linear relationship, which can achieve higher accuracy of pressure measurement.
With the technological innovation and development of the sensor industry, I believe that there will be more new materials and new processes, and the performance of the pressure sensor will be greatly improved.
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