The zero drift of pressure sensor 39853809 is mainly caused by the following reasons:
1. There are bubbles or impurities in the adhesive layer of strain gauge
2. The performance of strain gauge itself is unstable
3. There are virtual solder joints in the circuit
4. The stress release of the elastomer is incomplete; It also has to do with magnetic fields, frequency, temperature and so on. Electrodrift or some drift can exist, but there are ways we can narrow it down or correct it.
Zero point thermal drift is an important index affecting the performance of pressure sensor 39853809. It is considered that the zero point thermal drift is only determined by the inequity and temperature nonlinearity of the resistance, but it is also related to the reverse leakage of the resistance. At this point, polysilicon can absorb heavy metal impurities in the substrate, thus reducing the reverse leakage of the resistance, improving the zero thermal drift, and improving the performance of the sensor 39853809
Piezoresistive typePiezoresistive sensor is based on the piezoresistive effect of semiconductor materials in the semiconductor substrate device made by diffusion resistance. The substrate can be directly as a measuring sensors, diffusion resistance in substrate inscribed into bridge forms. When the substrate caused by external force and deformation, the resistance value will change, will produce corresponding unbalanced output bridge.Is used as the substrate piezoresistive sensor (or diaphragm) materials mainly for silicon and germanium, silicon wafers for sensitive materials made of silicon piezoresistive sensors become more and more get the attention of the people, especially to measure the pressure and velocity of the most common solid piezoresistive sensor applications.
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