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Article: The glow of success: UV luminescence sensors can do more than photoelectric sensors at less cost than vision systems.(quality & inspection)
- Article from:
- Quality
- Article date:
- May 1, 2006
- Author:
CopyrightCOPYRIGHT 2006 BNP Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Engineers do not often think of ultraviolet (UV) luminescence sensors for certain applications, yet they are often the best choice. They are more sensitive and selective than photoelectric or infrared sensors, and they are more affordable than vision systems, which may cost six times as much.
Luminescence sensors detect things that glow under UV light. The sensor sends out a beam of UV light (generally at a wavelength of 350 to 380 nanometers), detects the resulting visible glow, and outputs an electrical signal that can be used to control equipment or trigger an indicator.
Luminescence sensors can be used in many applications that would be problematic ...