Banner Engineering Q3X Laser Contrast Sensor

Banner Engineering’s Q3X is a problem-solving, laser contrast sensor that builds upon and complements existing Banner sensors. The QS18 and QS30 laser diffuse sensors have been Banner’s go-to, problem-solving products for many years for challenging part-presence applications.

The Q3X expands the types of applications Banner can solve due to its rugged metal housing, a three-digit display for easy to read feedback and versatility in solving challenging part-detection applications with small contrast differences.

Now available with fixed background suppression, the Q3X can overcome limitations of standard diffuse-mode sensors where objects in the background can affect the sensor. Out of the box, the Q3X works like a fixed-field sensor and reliably sees targets within the 0 to 50 mm sensing range. The sensor can also be programed for low contrast detection within a 0 to 50 mm teachable sensing range while ignoring objects at least 60 mm away.


  • Solves challenging part-detection applications with small contrast differences
  • High-speed part detection as fast as 250 μs, capturing up to 2,000 events per second
  • Angled three-digit display is easily viewed from multiple vantage points
  • Display provides clear user feedback for easy setup, and bright output indicator provides high visibility of sensor operation
  • Intuitive setup utilizing two tactile buttons located below the display
  • Rugged, nickel-plated zinc, laser-marked housing suitable for use even in environments where cutting fluids and oils might be present
  • Rated to IP67, IP68 and IP69K
  • Robust immunity to fluorescent light interference
  • Short-range models available with background suppression capability