Piezoelectric Ceramic 22X14.5X3mm  For Automobiles Electronic Ceramic Sensors 

Piezoelectric tube transducer always be used in areas of acoustics or as liquid transmission medium, to transmit axis non-direction ultrasonic signal or incept axis signal, such as surface ship sonar, equal-float cable, underwater speaker, sonobuoy, underwater , passive sonar array, torpedo, oil well detector, oil well dredge , ultrasonic pipe eliminating dirt, etc.  
If adding taper model reflecting cover, axis signal will be changed to radial signal, not only improving coupling impedance, but also advancing sensitivity, so that piezoelectric tube transducer also can be used as gas transmission medium.

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Ceramic semiconductor materials In ceramics, there are many semiconductors. The property of resistance changing with temperature can be used for non-linear resistance. Negative temperature coefficient nonlinear resistors (NTC nonlinear resistors) decrease in resistance as the temperature rises, and have general semiconductor characteristics. Iron-based metal oxide ceramics are chemically and thermally stable, so they can be used for non-linear resistors to control the temperature in a wide range. In contrast, the component called a positive temperature coefficient thermistor (PTC thermistor) uses semiconductorized BaTiO3 ceramics. This kind of ceramic has a sharp increase in resistance at the phase transition temperature. If it is used as a resistance heating element, it can automatically control the temperature around the phase transition temperature, which is very convenient.

When voltage is applied to piezoelectric ceramics, it will produce mechanical deformation with changes in voltage and frequency. On the other hand, when piezoelectric ceramics are vibrated, an electric charge is generated. Using this principle, when an electrical signal is applied to a vibrator composed of two piezoelectric ceramics or a piezoelectric ceramic and a metal sheet, the so-called bimorph element, ultrasonic waves will be emitted due to bending vibration. On the contrary, when ultrasonic vibration is applied to the piezoelectric bimorph element, an electrical signal is generated. Based on the above effects, piezoelectric ceramics can be used as ultrasonic sensors.

PiezoelectricCeramics (PZT) materials are categorized as functional ceramics. In sensors they make it possible toconvert forces, pressures and accelerations into electrical signals, and in sonic and ultrasonic transducers and actuators they convert electric voltages into vibrations or deformations.PiezoelectricCeramics materials are classified according to their chemical composition on the one hand, and by the specific application conditions on the other.

Application
1. ultrasonic cleaning trasnducer
2. ultrasonic welding tansducer
3. ultrasonic beauty transducer
4. ultrasonic underwater transducer
5. ultrasonic immersible transucer
6. ultrasonic screening transducer
7. ultrasonic cutting transducer
8. ultrasonic atomization transducer
9. ultrasonic emulsifier

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Piezoelectric Ceramic 22X14.5X3mm  For Automobiles Electronic Ceramic Sensors