Sensors & Transducers


Laser contrast sensor with background ­suppression

August 2015 Sensors & Transducers

Banner Engineering’s Q3X laser contrast sensor with fixed background suppression reliably detects targets within the desired sensing range, while ignoring objects in the background.

Out of the box, the Q3X LD50 operates like a fixed-field laser sensor and detects targets within its 50 mm sensing range. However, the sensor can be programmed for low-contrast sensing within this range, while ignoring objects at least 60 mm away. This allows the sensor to detect its target without background objects affecting performance.

“With fixed background suppression, the Q3X overcomes the problem of standard diffuse-mode sensors, where objects in the background affect the application,” said Dennis Smith, technical marketing manager at Banner Engineering. “The Q3X LD50 is an innovative solution for our customers’ hardest detection and error-proofing problems.”

Featuring high-speed part detection as fast as 250 s, the sensor can capture up to 2000 events per second. This, along with background suppression, makes the Q3X ideal for solving applications with small contrast changes where a background needs to be ignored.

A typical application is label detection on a bottle where contrast differences between the label and bottle provide reliable detection but the sensor must ignore the shiny metal rail in the background. The shiny metal background could cause a false trigger for standard diffuse-mode sensors.

Banner’s Q3X is designed with a unique angled, three-digit display of signal intensity, which provides high visibility of operating conditions from multiple angles. For an intuitive user setup, the unit has two tactile buttons conveniently located below the display.

The robust nickel-plated zinc die cast housing ensures reliable performance even in environments with exposure to cutting fluids and oils. Sensors are also rated to IP67, IP68 and IP69K for enhanced protection to water submergence and high-pressure wash down.

For more information contact Brandon Topham, RET Automation, +27 (0)11 453 2468, brandon.topham@retautomation.com, www.retautomation.com



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