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Increase the safety and speed of electrical thermography with these UL and CSA certified IR Windows. These IR Windows come in three diameters: 2", 3" or 4".
Fluke IR Windows are the most rugged on the market, with a heavy duty aluminum housing and arc-flash resistance to increase safety when conducting thermal inspections.
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With a Kwik Twist cover that magnetically sticks to the panel when removed, Fluke IR Windows are easy to use and deliver unmatched image clarity through a CLIRVU® crystal. Exclusive to Fluke IR Windows, CLIRVU crystal technology is impervious to both moisture and vibration. CLIRVU crystals are designed to withstand the extreme pressures and temperatures of an arc-fault event, and offer protection from molten projectiles associated with arc-flashes.
- Engineered and tested to withstand electric-arcs up to 50 kA for30 cycles.
- Certified by UL & CSA for Type 3/12 (Outdoor) environments in North America, these 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 IR 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.
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| Detailed specifications |
| Optic data |
| Crystal insert diameter |
3460346 FLK-050-CLKT: 50 mm (1.97 in) |
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3460387 FLK-075-CLKT: 75 mm (2.96 in) |
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3460439 FLK-100-CLKT: 100 mm (3.94 in) |
| Viewing aperture diameter |
3460346 FLK-050-CLKT: 43 mm (1.7 in) |
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3460387 FLK-075-CLKT: 68 mm (2.7 in) |
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3460439 FLK-100-CLKT: 89 mm (3.5 in) |
| Viewing aperture area |
3460346 FLK-050-CLKT: 1452 mm2 (2.25 sq in) |
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3460387 FLK-075-CLKT: 3632 mm2 (5.63 sq in) |
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6322 mm2 (9.79 sq in) |
| Thickness |
3460346 FLK-050-CLKT: 2 mm (0.08 in) |
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3460387 FLK-075-CLKT: 2 mm (0.08 in) |
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3460439 FLK-100-CLKT: 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 | | | UL50 environmental | | | UL746C | | | UL94 | | | Canadian Standards Association (CSA) approval | | | Environmental | | | 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 |
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| General specifications |
| Maximum temperature |
| Gaskets: |
250 °C (482 °F) |
| Body: |
659 °C (1219 °F) |
| Optic: |
1400 °C (2552 °F) |
| | Gaskets |
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Low smoke and fume (LSF) compliant silicone |
| | IP rating | | | NEMA rating |
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Type 3/12 (UL and CSA Third Party Certified) |
| | Vibration rating | | | Humidity rating | | | Pull-out strength | | | Warranty |
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Lifetime replacement against manufacturing defects |
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| Model Name | Description | Price List | | FLK-050-CLKT |
2 IN (50mm) C-Range IR Window, Kwik Twist
| On Request | | FLK-100-CLKT |
4 IN (100mm) C-Range IR Window, Kwik Twist
| On Request |
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