Fluke FLK-100-CLKT 4″ C-Range IR Window

  • Tough IR window for high-arc switchgear
  • Clear, coated optic for stable imaging
  • Rated for harsh heat and vibration loads
  • Fast, safe checks with sealed access
Free Shipping

Spend over £100 on any new goods order and receive automatic free shipping

Rewards

Points make purchases! For every £1 spent, earn back 1p that can be spent on any future new goods purchase

Our Price Promise

We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

£329.00 (ex VAT)

£394.80 (inc VAT)

Earn 329 points

Usually ships In 1 to 2 weeks
  • Tough IR window for high-arc switchgear
  • Clear, coated optic for stable imaging
  • Rated for harsh heat and vibration loads
  • Fast, safe checks with sealed access
Free Shipping

Spend over £100 on any new goods order and receive automatic free shipping

Rewards

Points make purchases! For every £1 spent, earn back 1p that can be spent on any future new goods purchase

Our Price Promise

We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

£329.00 (ex VAT)

£394.80 (inc VAT)

Earn 329 points

Usually ships In 1 to 2 weeks
Product Question
Name
Name
Plain text only. HTML is not allowed.
 
Fluke FLK-100-CLKT 4″ C-Range IR Window

Infrared checks become safer and smoother with the Fluke FLK-100-CLKT 4″ C-Range IR Window. Panels stay shut, tasks stay steady, and work carries on without long pauses or risky exposure. The window keeps its clarity in harsh weather, and it holds firm even when a site demands heavy use. This design helps teams keep inspection routines simple and repeatable, while the Fluke FLK-100-CLKT 4″ keeps visual quality stable.

Optic performance

Reliability matters during repeat scans, and the Fluke FLK-100-CLKT 4″ supports that aim through its tough crystal insert and consistent IR response. Each optic shields against moisture, dust and ultraviolet light, while the coating preserves a clear surface. Two sentences work together here to highlight that inspectors can keep gathering clean data without opening energised panels. Extra confidence comes from the way the optic keeps its shape and clarity across a wide temperature range, even during long inspection cycles.

Safety and application

Strong build quality gives the Fluke FLK-100-CLKT 4″ steady arc resistance and sound mechanical strength. Engineers can move through large sites faster because the access key and ID plate help with quick location checks. At the same time, its IP65 seal supports confident outdoor use, and its pull-out rating keeps the unit secure under strain. These traits allow safe routine work in active switchgear, where a stable window helps keep crews productive and protected.

Key Features
  • Designed for electrical IR inspections in energised panels
  • Coated optic helps reduce moisture impact during long use
  • Withstands demanding outdoor and indoor conditions
  • Supports visual, UV and wide-band IR inspection
  • Includes secure access key for controlled entry
  • Works with shortwave, midwave and longwave IR
  • Suitable for tough switchgear environments
  • Maintains clarity in very hot or very cold sites
  • Resists vibration and humidity during routine checks
  • Allows quick identification with supplied ID plate

 

pdf

Reviews

There are no reviews yet.

Be the first to review “Fluke FLK-100-CLKT 4″ C-Range IR Window”
Fluke FLK-100-CLKT 4″ C-Range IR Window

Infrared checks become safer and smoother with the Fluke FLK-100-CLKT 4″ C-Range IR Window. Panels stay shut, tasks stay steady, and work carries on without long pauses or risky exposure. The window keeps its clarity in harsh weather, and it holds firm even when a site demands heavy use. This design helps teams keep inspection routines simple and repeatable, while the Fluke FLK-100-CLKT 4″ keeps visual quality stable.

Optic performance

Reliability matters during repeat scans, and the Fluke FLK-100-CLKT 4″ supports that aim through its tough crystal insert and consistent IR response. Each optic shields against moisture, dust and ultraviolet light, while the coating preserves a clear surface. Two sentences work together here to highlight that inspectors can keep gathering clean data without opening energised panels. Extra confidence comes from the way the optic keeps its shape and clarity across a wide temperature range, even during long inspection cycles.

Safety and application

Strong build quality gives the Fluke FLK-100-CLKT 4″ steady arc resistance and sound mechanical strength. Engineers can move through large sites faster because the access key and ID plate help with quick location checks. At the same time, its IP65 seal supports confident outdoor use, and its pull-out rating keeps the unit secure under strain. These traits allow safe routine work in active switchgear, where a stable window helps keep crews productive and protected.

Key Features
  • Designed for electrical IR inspections in energised panels
  • Coated optic helps reduce moisture impact during long use
  • Withstands demanding outdoor and indoor conditions
  • Supports visual, UV and wide-band IR inspection
  • Includes secure access key for controlled entry
  • Works with shortwave, midwave and longwave IR
  • Suitable for tough switchgear environments
  • Maintains clarity in very hot or very cold sites
  • Resists vibration and humidity during routine checks
  • Allows quick identification with supplied ID plate

 

Technical Specifications
SpecificationValue
Crystal insert diameter100 mm (3.94 in)
Viewing aperture diameter89 mm (3.5 in)
Viewing aperture area6322 mm² (9.79 in²)
Optic thickness4 mm (0.16 in)
Optic coatingClirVu moisture-resistant coating
Shortwave IR capabilityYes
Midwave IR capabilityYes
Longwave IR capabilityYes
Ultraviolet capabilityYes
Visual inspection capabilityYes
Fusion imaging capabilityYes
CSA approvalYes
Environmental ratingType 3/12
Arc testing ANSI C37.20.750 kA for 30 cycles at 60 Hz
Arc testing EEMACS 14-1 Type-B40 kA for 30 cycles at 60 Hz
Arc testing IEC 6227120 kA for 5 cycles at 50 Hz
Cyclic humidity withstandYes
Vibration ratingIEC60068-2-6
Humidity ratingIEC60068-2-3
Resistance of insulating materials to 100°CYes
Ball pressure resistance (Brinell)Yes
Glow-wire test650°C
Marine switchgear approvalUp to 11 kV indoor or outdoor
Maximum temperature (body)250°C
Maximum temperature (optic)1400°C
Maximum temperature (gasket)659°C
Gasket typeLow-smoke, low-fume silicone
IP ratingIP65
NEMA ratingType 3/12
Pull-out strengthUp to 630 kg (1388 lb)
WarrantyLifetime replacement against manufacturing defects
Manufacturer part code3460439
What’s Included
  • Fluke FLK-100-CLKT 4″ C-Range IR Window
  • Security access key
  • Installation instructions
  • Self-adhesive drilling template
  • Identification plate

QUESTIONS

Related Products

You may also like…

  • Fluke CV401 ClirVu 95mm Locking Infrared Window
     Usually ships In 1 to 2 weeks

    Fluke CV401 ClirVu 95mm Locking Infrared Window

    £444.00 (ex VAT)
    £532.80 (inc VAT)
    • 95 mm IR view with arc-rated safety
    • AutoGround metal bond for quick fit
    • IP67 unit for harsh site conditions
    • Single-hole install with 63 kA test
    More info
  • Fluke CV400 ClirVu 95mm Infrared Window
     Usually ships In 1 to 2 weeks

    Fluke CV400 ClirVu 95mm Infrared Window

    £452.00 (ex VAT)
    £542.40 (inc VAT)
    • 95 mm IR window, arc-rated protection
    • AutoGround system for fast install
    • Operates -40°C to +232°C continuous
    • IP67 sealed, rugged marine certified
    More info