Fluke FLK-075-CLKT C-Range IR Window 3" (75mm)

Model: FLK-075-CLKT

3" (75mm) C-Range IR Window for indoor and outdoor applications, with KWIK Twist Key that easily swivels off.

$269.99 USD

was $299.99

1 to 2 Weeks


Fluke FLK-075-CLKT Infrared (IR) Window 3" Offers


  • The Fluke FLK-075-CLKT IR Window is 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 Infrared Windows, seals the optic prior to assembly to protect against moisture degradation.
  • Quadraband™ optic is compatible with IR-Fusion® and Thermal Fusion technologies 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.
  • Fluke AutoGround automatically grounds at installation for maximum safety and compliance. No additional steps or testing is required. Only available on Fluke IR Windows.
Optic data
Crystal insert diameter
75mm (296in)
Viewing aperture diameter
68mm (2.7in)
Viewing aperture area
3632mm2 (5.63in2)
2mm (0.08in)
CLIRVU coating
Shortwave IR, Midwave IR, Longwave IR, Ultraviolet (UV) capable
Visual and fusion capable
Maximum temperature
Gaskets: 250°C (482°F)
Body: 659°C (1219°F)
Optic: 1400°C (2552°F)
Low smoke and fume (LSF) compliant silicone
Pull-out strength
Up to 630kg (1388lb)
Lifetime replacement against manufacturing defects
Underwriters Laboratories (UL) recognized
UL50 environmental
Type 3/12
N/A Polymer free
N/A Polymer free
Canadian Standards Association (CSA) approval
Type 3/12
Cyclic humidity and vibration withstand
IP rating
NEMA rating
Type 1 (UL third party certified)
Vibration rating
Humidity rating
Click here for complete specifications on the Fluke FLK-075-CLKT

IR Windows are supplied complete, assembled and ready for installation.
In addition to the IR Window, each carton contains:
  • Installation CD
  • self-adhesive drilling template
  • security access key
  • warranty statement

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