CLKT C-Range
Infrared Window
Technical Data
Increase the safety and speed
of electrical thermography
If you are concerned about arc-flash
but wish to continue with your infrared
thermography program, Fluke infrared
windows are the answer.
Grounds instantly
Grounds instantly to metal enclosure with
patent-pending AutoGround™ process. No
additional steps or testing is required. Only
available on Fluke IR Windows.
These arc-resistant, outdoor certified, infrared
windows allow thermal, ultraviolet, visual and
fusion technologies to be used without exposing
personnel to live equipment.
•
Engineered and tested to withstand electric-arcs
up to 50 kA for 30 cycles.
•
Certified by UL & CSA for Type 3/12 (Outdoor)
environments in North America and Canada, the
C-Range windows are tested to withstand the
long term aging effects of UV exposure.
•
Certified by SIRA Certification IP65 (Outdoor)
environments in Europe.
•
The CLIRVU® coating—exclusive to Fluke
Windows—seals the optic prior to assembly to
protect against moisture degradation.
•
Got more than one window per panel?
Each C-Range window is delivered with an
identification plate attached for unique, on-site
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 CLKT C-Range Infrared Window
3460346 FLK-050-CLKT 3460387 FLK-075-CLKT 3460439 FLK-100-CLKT
Optic data
Crystal insert diameter 50 mm (1.97 in) 75 mm (2.96 in) 100 mm (3.94 in)
Viewing aperture diameter 43 mm (1.7 in) 68 mm (2.7 in) 89 mm (3.5 in)
Viewing aperture area 1452 mm2 (2.25 sq in) 3632 mm2 (5.63 sq in) 6322 mm2 (9.79 sq in)
Thickness 2 mm (0.08 in) 2 mm (0.08 in) 4 mm (0.16 in)
CLIRVU coating Yes
Shortwave IR capable Yes
Midwave IR capable Yes
Longwave IR capable Yes
Ultraviolet (UV) capable Yes
Visual capable Yes
Fusion capable Yes
Underwriters Laboratories (UL) recognized Yes
UL50 environmental Type 3/12
UL746C N/A (Polymer Free)
UL94 N/A (Polymer Free)
Canadian Standards Association (CSA) approval Yes
Environmental Type 3/12
KEMA (Arc-Testing)
ANSI C37.20.7 50 kA for 30 cycles @60 Hz
EEMACS 14-1 Type-B 40 kA for 30 cycles @60 Hz
ASTA (Arc-Testing)
IEC 62271 20 kA for 5 cycles @50 Hz
TUV
Cyclic humidity withstand Yes
Vibration withstand Yes
NEMKO
Resistance of insulating materials to 100° Yes
Resistance of insulating material to ball pressure (Brinell) Yes
Glow-wire test 650 °C Yes
Lloyds Register
Up to 11 kV marine switchgear, indoor or outdoor Yes
Detailed specications
Why is available area important?
Understanding the difference between “Optic Diameter”
and “Available Area” gives the thermographer a measure
of how much infrared energy is passing through the
window. The more energy, the better the reading. The
entire area of a crystal IR Window is available for infrared
transmission for optimum repeatable results.
Mesh grids may have a larger “optic diameter” but the
grid itself blocks the IR signal. The amount of radiation
available to the camera via mesh windows is significantly
reduced and the signal may be irregular.
3 Fluke Corporation CLKT C-Range Infrared Window
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
©2009-2014 Fluke Corporation.
Specifications subject to change without notice.
Printed in U.S.A. 10/2014 3504172F_EN
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 a self-adhesive
drilling template, security access key and warranty statement.
General specications
Ordering information
Maximum temperature Gaskets: 250 °C (482 °F)
Body: 659 °C (1219 °F)
Optic: 1400 °C (2552 °F)
Gaskets Low smoke and fume (LSF) compliant silicone
IP rating IP65
NEMA rating Type 3/12 (UL and CSA Third Party Certified)
Vibration rating IEC60068-2-6
Humidity rating IEC60068-2-3
Pull-out strength Up to 630 kg (1388 lb)
Warranty Lifetime replacement against manufacturing defects
Basic Field of View (FOV) calculation,
F = 6 x D
Crystal insert size 50 mm (2 in) 75 mm (3 in) 100 mm (4 in)
3460346
FLK-050-CLKT
3460387
FLK-075-CLKT
3460439
FLK-100-CLKT
