Fluke CLKT C-Range Data sheet

CLKT C-Range

Infrared Window

for outdoor applications

Increase the safety and speed
of electrical thermography

If you are concerned about arc-flash but
wish to continue with your infrared ther­mography program, infrared windows are
the answer. These arc-resistant, outdoor
certified, infrared windows allow thermal,
ultraviolet, visual and fusion technologies to
be used without exposing personnel to live
equipment.

All infrared windows from Fluke use the unique
Quadraband™ multispectral optic, allowing
inspection with any camera for total flexibility both
now and in the future.

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.

Own a Fluke Camera? The Quadraband™

•

optic is IR-Fusion® compatible, allowing the
thermographer to see potential problems in
visual light and thermographic mode.

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.

Technical Data

Quadraband

OPTIC TECHnOLOGY

Exclusive to Fluke IR Windows,
allows you to inspect your equip­ment with four different types
of cameras. Provides maximum
flexibility to upgrade or swap out
inspection cameras without any
IR Window replacement. No other
IR Windows manufacturer gives
you that flexibility.

AutoGround

Automatically grounds at instal­lation for maximum safety and
compliance. No additional steps
or testing is required. Only avail­able on Fluke IR Windows.

™

™

Detailed specifications

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

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

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.

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.

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

2 Fluke Corporation CLKT C-Range Infrared Window for outdoor applications

General specifications

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

Ordering information

Crystal insert size 50 mm (2 in) 75 mm (3 in) 100 mm (4 in)

3460346

FLK-050-CLKT

Kwik-twist aluminium cover KT KT KT

3460387

FLK-075-CLKT

3460439

FLK-100-CLKT

Basic Field of View (FOV) calculation,
F = 6 x D

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.

Fluke. Not just infrared.
Infrared you can use.

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. [phone] or
Fax [phone]
In Europe/M-East/Africa [phone] or
Fax [phone]
In Canada (800)-36-FLUKE or
Fax [phone]
From other countries [phone] or
Fax [phone]
Web access: http://www.fluke.com

©2009-2010 Fluke Corporation.
Specifications subject to change without notice.
Printed in U.S.A. 7/2010 3504172D D -EN-N

Modification of this document is not permitted
without written permission from Fluke Corporation.

TM

3 Fluke Corporation CLKT C-Range Infrared Window for outdoor applications