Reference
Last revision 2025/12/16
This article explores the piezoresistive effect and strain gauge sensors, emphasizing the role of monocrystallinesilicon in sensor response to force and resistivity changes, and details the construction and application of these sensors in pressure transmitters through IC engineering technology.
Library
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Principle
The monocrystallinesilicon is one interior material of the sensor. When monocrystallinesilicon material suffers force, it makes an infinitesimal change and an electronic level change of internal atom structure, which will also lead to a great change in resistivity (Factor H Mutation), so as the resistance. This physical effect is piezoresistive effect.
Based on the piezoresistive effect, a strain gauge is also a work of IC (integrated circuit) engineering technology. Its production process contains doping, diffusion and a crystal orientation of the substrate. A strain gauge makes a Wheatstone Bridge. Taking advantage of elasticity properties of special silicon material and heterosexual micro-machining the same silicon material in different directions, then a diffused silicon sensor comes into being. The sensor is force-sensitive and mechanical-electrical detective.
Equipped with an amplify circuit and other parts in need, enable the circuit to output a standard signal, the diffused silicon sensor makes a pressure transmitter.


Other Supplementary Information
Installation
- Installation Scenes


1.To guarantee the interface tightness, you need to install a waterproof nut and bind PTFE tape.
2.Please take necessary measures to avoid large pressure involved during usage.
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