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Fluke CLKT C-Range Infrared Windows

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Save Time and Conduct More Efficient Electrical Infrared Inspections

Once you've installed a Fluke infrared window there is no more need to power down or remove panel doors – you may never have to open the panel door again. Inspections are now conducted quickly, easily and safer than they were before.

Your greatest investment is not what's behind the panel door; your priority is to offer the ultimate protection for the electricians, engineers and inspectors who risk their lives every day doing their jobs.

Fluke CLKT Infrared Windows are Available in Three Sizes 50 mm (2 in), 75 mm (3 in) and 100 mm (4 in)

Each CLKT infrared window is engineered and tested to withstand electric-arcs up to 50 kA for 30 cycles.

The CLIRVU® coating - exclusive to Fluke infrared windows - seals the optic prior to assembly to protect against moisture degradation making it perfect for very hot and very cold outdoor environments.

Each Fluke infrared window is delivered with an identification plate attached for unique, on-site numbering for rapid location confirmation and faster repairs.

CLKT infrared windows come complete with a security access key, installation instructions and self-adhesive drilling template.

For 5 minute or less installation and Autoground consider the CV300.

Detailed Specifications
Optic Data
Crystal insert diameter
3460346 FLK-050-CLKT:   50 mm (1.97 in)
3460387 FLK-075-CLKT:   75 mm (2.96 in)
3460439 FLK-100-CLKT:   100 mm (3.94 in)
Viewing aperture diameter
3460346 FLK-050-CLKT:   43 mm (1.7 in)
3460387 FLK-075-CLKT:   68 mm (2.7 in)
3460439 FLK-100-CLKT:   89 mm (3.5 in)
Viewing aperture area
3460346 FLK-050-CLKT:   1452 mm2 (2.25 sq in)
3460387 FLK-075-CLKT:   3632 mm2 (5.63 sq in)
3460439 FLK-100-CLKT:   6322 mm2 (9.79 sq in)
Thickness
3460346 FLK-050-CLKT:   2 mm (0.08 in)
3460387 FLK-075-CLKT:   2 mm (0.08 in)
3460439 FLK-100-CLKT:   4 mm (0.16 in)
CLIRVU coating
3460346 FLK-050-CLKT:   Yes
3460387 FLK-075-CLKT:   Yes
3460439 FLK-100-CLKT:   Yes
Shortwave IR capable
3460346 FLK-050-CLKT:   Yes
3460387 FLK-075-CLKT:   Yes
3460439 FLK-100-CLKT:   Yes
Midwave IR capable
3460346 FLK-050-CLKT:   Yes
3460387 FLK-075-CLKT:   Yes
3460439 FLK-100-CLKT:   Yes
Longwave IR capable
3460346 FLK-050-CLKT:   Yes
3460387 FLK-075-CLKT:   Yes
3460439 FLK-100-CLKT:   Yes
Ultraviolet (UV) capable
3460346 FLK-050-CLKT:   Yes
3460387 FLK-075-CLKT:   Yes
3460439 FLK-100-CLKT:   Yes
Visual capable
3460346 FLK-050-CLKT:   Yes
3460387 FLK-075-CLKT:   Yes
3460439 FLK-100-CLKT:   Yes
Fusion capable
3460346 FLK-050-CLKT:   Yes
3460387 FLK-075-CLKT:   Yes
3460439 FLK-100-CLKT:   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

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

Model NameDescription
FLK-050-CLKT 2 IN (50mm) C-Range IR Window, Kwik Twist
FLK-100-CLKT 4 IN (100mm) C-Range IR Window, Kwik Twist
        
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