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) |
| 3460387 FLK-075-CLKT: |
75 mm (2.96 in) |
| 3460439 FLK-100-CLKT: |
100 mm (3.94 in) |
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| 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) |
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| 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) |
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| 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) |
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| CLIRVU coating |
| 3460346 FLK-050-CLKT: |
Yes |
| 3460387 FLK-075-CLKT: |
Yes |
| 3460439 FLK-100-CLKT: |
Yes |
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| Shortwave IR capable |
| 3460346 FLK-050-CLKT: |
Yes |
| 3460387 FLK-075-CLKT: |
Yes |
| 3460439 FLK-100-CLKT: |
Yes |
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| Midwave IR capable |
| 3460346 FLK-050-CLKT: |
Yes |
| 3460387 FLK-075-CLKT: |
Yes |
| 3460439 FLK-100-CLKT: |
Yes |
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| Longwave IR capable |
| 3460346 FLK-050-CLKT: |
Yes |
| 3460387 FLK-075-CLKT: |
Yes |
| 3460439 FLK-100-CLKT: |
Yes |
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| Ultraviolet (UV) capable |
| 3460346 FLK-050-CLKT: |
Yes |
| 3460387 FLK-075-CLKT: |
Yes |
| 3460439 FLK-100-CLKT: |
Yes |
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| Visual capable |
| 3460346 FLK-050-CLKT: |
Yes |
| 3460387 FLK-075-CLKT: |
Yes |
| 3460439 FLK-100-CLKT: |
Yes |
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| Fusion capable |
| 3460346 FLK-050-CLKT: |
Yes |
| 3460387 FLK-075-CLKT: |
Yes |
| 3460439 FLK-100-CLKT: |
Yes |
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| Underwriters Laboratories (UL) recognized |
Yes |
| UL50 environmental |
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| UL746C |
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| UL94 |
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| Canadian Standards Association (CSA) approval |
Yes |
| Environmental |
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| KEMA (Arc-Testing) |
| ANSI C37.20.7 |
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50 kA for 30 cycles @60 Hz |
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| EEMACS 14-1 Type-B |
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40 kA for 30 cycles @60 Hz |
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| ASTA (Arc-Testing) |
| IEC 62271 |
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20 kA for 5 cycles @50 Hz |
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| TUV |
| Cyclic humidity withstand |
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| Vibration withstand |
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| NEMKO |
| Resistance of insulating materials to 100° |
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| Resistance of insulating material to ball pressure (Brinell) |
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| Glow-wire test 650 °C |
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| Lloyds Register |
| Up to 11 kV marine switchgear, indoor or outdoor |
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| General Specifications |
| Maximum temperature |
| Gaskets: |
250 °C (482 °F) |
| Body: |
659 °C (1219 °F) |
| Optic: |
1400 °C (2552 °F) |
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| Gaskets |
|
Low smoke and fume (LSF) compliant silicone |
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| IP rating |
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| NEMA rating |
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Type 3/12 (UL and CSA Third Party Certified) |
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| Vibration rating |
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| Humidity rating |
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| Pull-out strength |
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| Warranty |
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Lifetime replacement against manufacturing defects |
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| Model Name |
Description |
Price List |
Buy it |
| FLK-075-CLKT |
3 IN (75mm) C-Range IR Window, Kwik Twist |
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| FLK-050-CLKT |
2 IN (50mm) C-Range IR Window, Kwik Twist |
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| FLK-100-CLKT |
4 IN (100mm) C-Range IR Window, Kwik Twist |
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