Fluke 61 user manual Specifications, Accuracy

	Specifications
Temperature range	-18 to 275°C (0 to 525°F)
Display Resolution	0.2°C or 0.5°F
Accuracy	For targets at:
(assumes ambient operating	-1 to 275°C (30 to 525°F) ±2% of reading
temperature of 23°C [73°F])	or ±2°C (±3.5°F), whichever is greater
	-18 to -1°C (0 to 30°F) ±3°C (±5°F)
Temperature Coefficient	0.2K per °C or 0.2% per °C, whichever is greater
Repeatability	± 2% of reading, or ± 2°C (±3.5°F)
	whichever is greater
Response time	500 mSec, 95% response
Spectral response	7–18 µm
Emissivity	pre-set 0.95
Ambient operating range	0 to 50°C (32 to 120°F)
Relative humidity	10–90% RH noncondensing, @ up to 50°C (120°F)
Storage temperature	-20° to 60°C (-4° to 140°F) without battery
Weight / Dimensions	227 g (0.5 lb); 184 x 45 x 38 mm
	(7.25 x 1.75 x 1.5 in) without holster
	341 g (0.75lb); 190 x 51 x 41 mm
	(7.5 x 2.0 x 1.6 in) with holster
Power	9V Alkaline or NiCd battery
Battery life (Alkaline)	12 hrs
Distance to Spot Size	8:1

Specifications subject to change without notice.