Fluke 566 and 568 Thermometers measure -40 °C to 800 °C /-40 °F to 1472 °F (568) or -40 °C to 650 °C/-40 °F to 1202 °F (566) with 1 % measurement accuracy
The Fluke 566 and 568 are two‑in‑one infrared and contact thermometers with a dot‑matrix display and soft‑key menus, designed for industrial, electrical and mechanical environments. This handbook outlines their key features, such as adjustable emissivity, data logging, and USB connectivity for the 568 model.
Key specifications include temperature ranges of –40 °C to 650 °C (566) and –40 °C to 800 °C (568), distance‑to‑spot ratios of 30:1 and 50:1, a single‑point laser sight, and up to 20 (566) or 89 (568) data points stored with timestamps. Power is supplied by two AA/LR6 batteries, with optional USB power for the 568, and the devices operate from 0 °C to 50 °C.
| Infrared accuracy (<0 °C) | +1.0 °C / +2.0 °F |
|---|---|
| Distance‑to‑spot ratio | 30:1 (566) / 50:1 (568) |
| Data storage points | 20 points (566) / 89 points (568) |
| PC interface | USB 2.0 with FlukeView® Forms software (568 only) |
| Power source | 2 AA/LR6 batteries, optional USB (568) |
| Battery life | 12 h continuous with laser/backlight on, 100 h with off |
| Operating temperature range | 0 °C to 50 °C |
The 566 can store up to 20 points and the 568 can store up to 89 points.
The 568 provides a USB 2.0 interface with FlukeView® Forms software; the 566 has no PC interface.