The QL Series of microprocessor-controlled luminescence sensors consists of the QL50 and the QL55. These self-contained sensors use a modulated ultraviolet LED to scan for luminescence in materials and are not affected by color or contrast shifts that can challenge traditional optical sensors.

The QL50, which costs $389, can be programmed two ways. A quick set mode teaches the sensor to detect the specific luminescence intensity of a target and ignore the less intense background. A fine detect mode increases the unit's sensing precision to detect the specific luminescence intensity of a target and ignore all other surfaces with more or less luminescence.

The QL55, which costs $895, features a robust metal housing, enhanced sensitivity, and two-step teach programming. The sensor is taught both the luminescent target and background conditions and automatically selects light operate and dark operate.
Banner Engineering Corp., 9714 10th Ave. N., Minneapolis, MN 55441. 763-544-3164. www.bannerengineering.com.

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