Pressure sensor structure
It is composed of base material, metal strain wire or strain foil, insulation protection sheet and lead wire. According to different applications, the resistance strain gauge resistance can be designed by the designer, but the value of the resistance range should be noted: the resistance is too small, the required drive current is too large, while the heat of the strain gauge caused its own temperature is too high , The use of different environments, so that the resistance of the strain gauge changes too much, the output zero drift is obvious, the zero adjustment circuit is too complex. The resistance is too high, the impedance is too high, and the resistance to external electromagnetic interference is poor. Generally, they are several tens of euros to several tens of thousands of euros.