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Fluke introduces new CLKTO C-Range Infrared Windows for safe thermal inspection of indoor switchgear

The Fluke CLKTO Window is specifically designed for indoor applications and incorporates a clear, impact resistant viewing pane which complies fully with IEEE and ANSI requirements for indoor switchgear rated at up to 72kV. This revolutionary viewing pane with QuadrabandTM optics allows visual inspection of electrical equipment even with the cover closed. The unique twist-off magnetic cover is impact resistant to ANSI requirements.

Fluke CLKTO IR Windows use the unique QuadrabandTM multispectral optic that allows inspection with any thermal imaging camera, for maximum flexibility. Optics are sealed against moisture degradation with the exclusive Fluke CLIRVU® coating and tested to withstand the long term aging effects of UV exposure.

The CLKTO C-Range windows are certified by Underwriters Laboratories as suitable for Type 1 (indoor) environments in North America and Canada and comply with ANSI regulation C37.20.2 for switchgear up to 72 kV.

For outdoor applications Fluke also offers the Fluke CLKT C-Range Infrared Windows, certified by UL and CSA for type 3/12 (outdoor) environments in North American and Canada, and by SIRA Certification IP65 (outdoor) environments in Europe.

Maintenance professionals in industrial plants, commercial buildings and electrical utilities use infrared thermal imagers to inspect installations for hot spots that could indicate loose connections, bad bearings or other equipment failure. Fluke infrared window enable workers to inspect high-energy equipment safely, without opening equipment enclosures or wearing the heavy personal protective equipment (PPE) required to protect workers from electric arc-flash. Using Fluke infrared windows they can do more inspections in less time, with greater safety.

Pricing and Availability

The new Fluke CLKTO C-Range IR windows are available for immediate purchase at a US suggested retail price of $350.00. For additional information, visit

For More Information

Fluke test instruments are distributed in more than 100 countries. For more information on Fluke thermography tools and applications, or to find the location of your nearest distributor, contact Fluke Corporation, P.O. Box 9090, Everett, WA USA 98206, call (800)760-4523, e-mail or visit the Fluke Web site at

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About Fluke

Founded in 1948, Fluke Corporation is the world leader in compact, professional electronic test tools. Fluke tools deliver the testing and troubleshooting capabilities that are critical to keep commerce and industry running smoothly. Fluke customers are technicians, engineers, electricians, metrologists and building diagnostic professionals who install, troubleshoot and manage industrial, electrical and electronic equipment and calibration processes for quality control and building restoration. In the past five years, Fluke tools won more than 50 industry awards, including Test and Measurement World Best in Test, Control Engineering Engineer’s Choice and Plant Engineering Product of the Year. Fluke is a registered trademark of Fluke Corporation in the United States and/or other countries. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

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