Detecting Wavelength of Non-Contact Thermometers

To get better measurement result of the temperature. we have to consider absorption of infrared ray by water vapor (H₂O) and carbon dioxide (CO₂) in the atmosphere. In that sense, OPTEX-FA's non-contact thermometers utilize infrared with its wavelength from 8 to 14 μm shown as following. This range of wavelength is one of the widest ranges of wavelength called infrared atmospheric window.