Fluke FLUKE-568

Infrared temperature range -40 °C to 800 °C (-40 °F to 1472 °F) Infrared accuracy < 0 °C (32 °F): ± (1.0 °C (± 2.0 °F) + 0.1°/1 °C or °F); > 0 °C (32 °F): ± 1 % or ± 1.0 °C (± 2.0 °F), whichever is greater Display resolution 0.1 °C / 0.1 °F Infrared spectral response 8 µm to 14 µm Infrared response time < 500 msec Thermocouple Type-K input temperature range -270 °C to 1372 °C (-454 °F to 2501 °F) Thermocouple Type-K input accuracy -270°C to -40°C: -40°C to 1372°C:     ± (1 °C + 0.2 °/1 °C) (-454 °F to -40 °F: ± (2 °F + 0.2 °/1 °F)) ± 1 % or 1 °C (-40 °F to 2501 °F: ± 1 % or 2 °F), whichever is greater D:S (distance to measurement spot size) 50:1 Laser sighting Single-point laser < 1 mw output Class 2 (II) operation, 630 nm to 670 nm Minimum spot size 19 mm (0.75 in) Emissivity adjustment By built-in table of common materials or digitally adjustable from 0.10 to 1.00 by 0.01 Data storage with Date/Time stamp 99 points PC Interface and cable USB 2.0 with FlukeView® Forms software Hi/Low alarms Audible and two-color visual Min/Max/Avg/Dif Yes Display Dot matrix 98 x 96 pixels with function menus Backlight Two levels, normal and extra bright for darker environments Trigger lock Yes Switchable Celsius and Fahrenheit Yes Power 2 AA/LR6 Batteries and USB when used with a PC Battery life If used continuously: laser and backlight on,12 hours; laser and backlight off, 100 hours Operating temperature 0 °C to 50 °C (32 °F to 122 °F) Storage temperature -20 °C to 60 °C (-40 °F to 140 °F) Bead thermocouple Type-K range -40 °C to 260 °C (-40 °F to 500 °F) Bead thermocouple Type-K accuracy ± 1.1 °C (2.0 °F) from 0 °C to 260 °C (32 °F to 500 °F), typically within 1.1 °C (2.0 °F) from -40 °C to 0 °C (-40 °F to 32 °F)