CLKTO C-Range
Infrared Window
for indoor applications Technical Data
Increase the safety and speed
of electrical thermography
Inspect your indoor switchgear safely with
the latest IR Window from Fluke. If you are
concerned about arc-flash or electrocution
risk, this latest C-Range IR Window can help
increase the safety of your personnel and
reduce the cost of predictive maintenance,
in compliance with indoor switchgear codes.
Impact resistant
viewing pane
The CLKTO IR Window from Fluke
incorporates a revolutionary, impact
resistant viewing pane compliant
with indoor switchgear regulations
C37.20.2.
For the first time, your
Fluke IR Window
allows visual
inspection of your
switchgear even
with the cover
closed.
• Impact resistant viewing pane compliant to ANSI C37.20.2 for
indoor switchgear up to 72 kV.
• CLKTO IR Windows from Fluke use the unique Quadraband™
multispectral optic, allowing inspection with any camera for total
flexibility both now and in the future.
• Certified by UL and CSA as suitable for Type 1 (Indoor)
environment in North America and Canada, these C-Range
windows are tested to withstand the long term aging effects of
UV exposure.
• The CLIRVU® coating—exclusive to Fluke Windows—seals the optic
prior to assembly to protect against moisture degradation.
• Own a Fluke Camera? The Quadraband™ optic is IR-Fusion®
compatible, allowing the thermographer to see potential problems
in visual light and thermographic mode.
• The CLKTO IR Window incorporates a revolutionary, impact
resistant viewing pane compliant with indoor switchgear
regulations C37.20.2. For the first time, your Fluke IR Window
allows visual inspection of your switchgear even with the
cover closed.
• Identification plate attached for unique, onsite numbering for
rapid location confirmation and faster repairs.
• Each infrared window comes complete with a security access key,
installation instructions and self-adhesive drilling template.
2 Fluke Corporation CLKTO C-Range Infrared Window for indoor applications
3460611 FLK-075-CLKTO
Optic data
Crystal insert diameter 75 mm (2.96 in)
Viewing aperture diameter 68 mm (2.7 in)
Viewing aperture area 3632 mm2 (5.63 sq in)
Thickness 2 mm (0.08 in)
CLIRVU coating Yes
Shortwave IR, Midwave IR,
Longwave IR, Ultraviolet (UV)
capable
Yes
Visual and fusion capable Yes
Maximum temperature Gaskets: 250 °C (482 °F)
Body: 659 °C (1219 °F)
Optic: 1400 °C (2552 °F)
Viewing pane 150 °C (302 °F)
Gaskets Low smoke and fume (LSF) compliant
silicone
Pull-out strength Up to 630 kg (1388 lb)
Warranty Lifetime replacement against
manufacturing defects
Specications Why is CLKTO different?
The CLKTO IR window from Fluke
incorporates a unique twist-off magnetic
cover which is impact resistant to ANSI
requirements.
When infrared or ultraviolet imaging is
being performed the visual viewing pane
is removed and retained magnetically to
the panel cover. Before and after imaging,
visual inspection of the switchgear and
imaging pane can be undertaken without
exposing the operator to live electrical
equipment.
Certications
Underwriters Laboratories
(UL) recognized
Yes
UL50 environmental Type 1
UL746C Yes
UL94 Yes - V0
Canadian Standards
Association (CSA) approval
Yes
Environmental Type 1
TUV
Cyclic humidity and vibration
withstand
Yes
IP rating IP65
NEMA rating Type 1 (UL third party certified)
Vibration rating IEC60068-2-6
Humidity rating IEC60068-2-3
Basic Field of
View (FOV)
calculation,
F = 6 x D
Fluke. Not just infrared.
Infrared you can use.TM
Fluke Corporation
PO Box 9090, Everett, WA 98206 U.S.A.
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U.S.A. (800) 443-5853 or
Fax (425) 446-5116
In Europe/M-East/Africa +31 (0) 40 2675 200 or
Fax +31 (0) 40 2675 222
In Canada (800)-36-FLUKE or
Fax (905) 890-6866
From other countries +1 (425) 446-5500 or
Fax +1 (425) 446-5116
Web access: http://www.fluke.com
©2010 Fluke Corporation.
Specifications subject to change without notice.
Printed in U.S.A. 9/2010 3834865B D-EN-N
Modification of this document is not permitted
without written permission from Fluke Corporation.
Included with product
IR Windows are supplied complete, assembled and ready for installation.
In addition to the IR Window each carton contains an installation CD,
self-adhesive drilling template, security access key, warranty statement.
Ordering information
3460611 FLK-075-CLKTO 75 mm (3 in)
Kwik-twist aluminium cover KT
