---
title: What is the blind zone, detection range, scanning range for ultrasonic sensors?
description: Terms associated with BUS
---

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# 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.
  
                  ![](https://kb.innovatingautomation.asia/hs-fs/hubfs/image-png-Sep-19-2020-05-25-53-90-PM.png?width=456&name=image-png-Sep-19-2020-05-25-53-90-PM.png)  
               
  [Learn more about Balluff Ultrasonic sensors](https://www.balluff.com/en/de/productfinder/#/ca/A0001/cg/G0104)

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