Ultrasonic Sensors | Warner Electric

Ultrasonic signals are like audible sound waves, except the frequencies are much higher.

Ultrasonic transducers have piezoelectric crystals which resonate to a desired frequency and convert electric energy into acoustic energy and vice versa.

Diagram A shows how sound waves transmitted in the shape of a cone are reflected back to the transducer. At this stage, an output signal is produced to perform some kind of indicating or control function.

A minimum distance from the sensor is required to provide a time delay so that the “echoes” can be interpreted. Variables which can affect the operation of an ultra- sonic sensor include: target surface angle, reflective surface roughness, change in temperature or humidity. The targets can have any kind of reflective form and even round objects are an acceptable target.

Product Features

  • Discrete distances to moving objects can be detected and measured
  • Less affected by target materials and surfaces
  • Not affected by color
  • Solid state – virtually unlimited maintenance-free life
  • Small objects can be detected over longer distances
  • Resistance to external disturbances such as vibration, infrared radiation, ambient noise, and EMI radiation
  • Analog outputs 0-10V
  • Input voltage 17-30VDC
  • Range control with teach-in function
  • 80" max distance
  • Sensing range from 60 to 2000mm
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