UV power monitor

John Lewis, Regional Editor -- Design News, June 4, 2001

Operating an ultraviolet (UV) light source out of specification in a curing or sterilization process can lead to defective products due to improper curing or poor sterilization. So checking UV light intensity periodically is important to maintain product quality. The F3UV improves quality control, allowing users to switch from periodic to continuous UV-lamp inspection.

The UV power monitor outputs an analog light intensity reading from 0-100% on its LED display, which can help eliminate expensive problems such as wasted UV lamps, premature field failures, and defective or contaminated products.

In "monitor" mode, the amplifier measures light intensity between 0.2 and 200 mW/cm², every 13 msec. In "integral" mode, the amplifier allows process changes based on changes in lamp output. For example, if the lamp falls below 70% output, the amplifier can tell a PLC to slow the conveyor, keeping the product line rolling, albeit at a lower throughput, until the lamp can be changed.

David Grimmett, Omron Electronics Inc., One E. Commerce Dr., Schaumburg, IL 60173;

Tel: (847) 843-7900; Fax: (847) 843-7787; E-mail: david.grimmett@omron.com.

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