Proximity/distance sensors

Being the major piezoceramic supplier in Taiwan, Unictron’s piezo elements are the perfect solution for the generation of stable and reliable ultrasonic wave needed in proximity/distance sensor applications. Our engineering teams have been working in piezo ceramic industry for more than 25 years. We have sound background in materials formulations and ceramic processing technologies as well as advanced characterization and manufacturing facilities for the development and mass production of piezoceramic elements. High performance automated equipments for the assembly of ceramic and metal discs are established. High sensitivity, high resolution and high reliability ultrasonic sensors with various dimensions are available to meet your demands.
Piezo elements for ultrasonic level sensor
Distance/Proximity sensor is one of the applications of ultrasound in air. By acting both as transmitter and receiver, a piezoelectric ceramic disk transmits a short burst of ultrasonic wave to the target and receives the reflected echo from it. Distance of the object is calculated using the time difference between the received and the transmitted signal.


  • Piezoceramic transducers for the transmitting and receiving of ultrasonic signal needed for distance measurement.


  • Excellent durability and reliability
  • High sensitivity
  • High resolution and positional accuracy
  • Fast response




Outer Diameter
Inner Diameter
Radial Frequency

Note: Custom-made dimensions and shapes are available upon request
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