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Piezoelectric sensor is used to convert the mechanical stress into electric charge, it gives AC at output. Piezoelectric Effect. The ability of a piezoelectric material to convert a mechanical stress into electrical charge is called a Piezoelectric Effect.
This report discusses the basic concepts of piezoelectric transducers used as sensors and two circuits commonly used for signal conditioning their output. Contents
Piezoelectric ceramics are a type of multi-crystal dielectric with a high dielectric constant and are formed by two processes : first, high temperature firing. After firing, they have the characteristic crystal structure shown in Fig. 1 (a) but do not yet exhibit the piezoelectric property because the electrical dipoles
Piezoelectric Pressure Sensor. The S-Series sensors are widely used for complex measurement tasks of fast or high frequent events where robustness, precision and repeatability are key requirements.
piezoresistive pressure sensors are the right choice when mea-suring static pressure curves. At the core of the all-welded, hermetically sealed Type 601C series there is a high performance PiezoStar crystal grown by Kistler. This PiezoStar crystal gives the sensor a far higher sen-sitivity than an equivalently sized pressure sensor based on
Features. Compact, low-profile design. DC voltage output. High-precision liner output and highly stable. Integrates all signal processing blocks, including oscillation, amplifying and rectifying circuit. Applications. Sensing of surface electric potential for photosensitive drums used in PPC machines and laser beam printers.
The P-series is designed for monitoring dynamic pres-sure and quasistatic pressure up to 350 bar and fea-tures a high accuracy which makes the sensors also suitable for precise thermodynamic analyses.