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Fluke 568 Infrared Thermometer
The Fluke 568 is a versatile two-in-one contact and non-contact infrared thermometer featuring a high-optical 50:1 distance-to-spot ratio and an IR temperature range from -40°C to 800°C (-40°F to 1472°F). Equipped with an external Type-K thermocouple input (up to 1372°C), an on-board 99-point data logger, and USB connectivity with FlukeView Forms software, it simplifies complex temperature audits across industrial, electrical, and mechanical assets.
Features & Benefits
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Two-in-One IR and Contact Measurement: Measures non-contact infrared surface temperatures from -40°C to 800°C and contact temperatures up to 1372°C via standard mini-connector Type-K thermocouples.
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Tight 50:1 Distance-to-Spot (D:S) Ratio: Accurately targets a small 19 mm (0.75 in) spot from nearly 1 meter away, ensuring operator safety near live high-voltage gear and hot furnaces.
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On-Board 99-Point Logging with USB Interface: Logs up to 99 timestamped readings directly into internal memory for field analysis and fast PC transfer via USB 2.0.
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FlukeView Forms Software Included: Enables effortless charting, historical trending, and professional client reporting on Windows PCs.
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Built-in Materials Emissivity Table: Features pre-loaded emissivity values for common industrial metals and building materials, or custom adjustments from 0.10 to 1.00.
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Two-Color Flashing High/Low Alarms: Audio beeper and visual two-color flashing screen immediately alert technicians to out-of-tolerance thermal anomalies.
Description
Designed for plant maintenance supervisors, HVAC/R engineers, and electrical diagnostic specialists, the Fluke 568 combines the speed of optical infrared measurements with the contact verification accuracy of thermocouple probing in a single rugged handheld tool. Its narrow 50:1 distance-to-spot ratio allows technicians to safely inspect smaller, distant components—such as high-voltage overhead lines, motor bearings, boiler walls, and steam pipes—from a secure vantage point while maintaining precise 1% measurement accuracy.
Specifications
| Specification Attribute | Details / Values |
| Brand / Manufacturer |
Fluke Corporation |
| Model / MPN |
568 (Part Number: FLUKE-568 / 2837799) |
| Product Category |
Two-in-One Contact and Non-Contact Infrared Thermometer |
| Infrared Temperature Range | -40°C to 800°C (-40°F to 1472°F) |
| Infrared Accuracy |
$> 0^\circ\text{C}$: $\pm 1.0\%$ or $\pm 1.0^\circ\text{C}$ ($\pm 2.0^\circ\text{F}$), whichever is greater $< 0^\circ\text{C}$: $\pm(1.0^\circ\text{C} + 0.1^\circ\text{C}/1^\circ\text{C})$ |
| Distance-to-Spot (D:S) Ratio | 50:1 (calculated at 90% energy) |
| Minimum Measurement Spot Size | 19 mm (0.75 in) |
| Laser Sighting | Single-point laser (<1 mW, Class 2, 630 nm to 670 nm) |
| Type-K Thermocouple Input Range | -270°C to 1372°C (-454°F to 2501°F) |
| Type-K Input Accuracy |
$-270^\circ\text{C}$ to $-40^\circ\text{C}$: $\pm(1^\circ\text{C} + 0.2^\circ/\text{1}^\circ\text{C})$ $-40^\circ\text{C}$ to $1372^\circ\text{C}$: $\pm 1\%$ or $1^\circ\text{C}$ |
| Included K-Type Bead Probe Range | -40°C to 260°C (-40°F to 500°F); Accuracy $\pm 1.1^\circ\text{C}$ |
| Response Time | < 500 ms (95% of reading) |
| Spectral Range | 8 µm to 14 µm |
| Emissivity Adjustment | Digitally adjustable 0.10 to 1.00 (in 0.01 steps) or select via built-in table of common materials |
| Display Resolution | 0.1°C / 0.1°F |
| Data Memory & Logging | 99 internal points with date and time stamp |
| PC Connectivity | USB 2.0 with FlukeView Forms Software (Can power unit via USB) |
| Display & Backlight | 98 × 96 dot-matrix LCD with 2-level backlight (Normal and Extra Bright) |
| Power Source & Battery Life | 2× AA / LR6 alkaline batteries; 12 hours continuous (laser & backlight on), 100 hours (off) |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Dimensions & Weight | 25.4 × 19.1 × 6.9 cm (10 × 7.5 × 2.7 in); Approx. 1.026 kg (with packaging/case) / Unit: ~322 g |
| In The Box / Standard Accessories | Fluke 568 Thermometer, K-Type Bead Thermocouple, FlukeView Forms Software CD, USB Cable, Hard Carry Case, 2× AA Batteries, Quick Start Guide, User Manual |
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