What is the blind zone, detection range, scanning range for ultrasonic sensors?

Terms associated with BUS

• Blind zone
  The blind zone defines the smallest reliable scanning range of the sensor. There must be no objects or interfering reflections within the blind zone.
• Operating scanning range
  The operating scanning range is the typical working range of a sensor.
• Limiting scanning range
  For objects with good reflective properties, the sensor can also be used up to its limiting scanning range.
• Detection range
  The detection range is measured using various standard reflectors.
  
                 
             
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