What is the spectral range of an IR thermometer?
The infrared spectral range is 0.7 to 1000 µm, the range for wavelength in which infrared radiation is transmitted. For cost reasons, IR thermometers generally operate under 20 µm. Most IR thermometers have a spectral responseof 8-20 µm. This range is used because it is minimally affected by carbon dioxide and water in the atmosphere. With longer, lower-energy wavelengths greater than 20 µm, the accuracy decreases with increased distances due to the effects of the atmosphere (humidity).
