FT-IR Spectrometer Uses an interferometer. Has better sensitivity. Less energy is needed from source. Completes a scan in 1-2 seconds. Takes several scans and averages them. Has a laser beam that keeps the instrument accurately calibrated. => Chapter 12 13Chapter 12 13 FT-IR Spectrometer • Uses an interferometer. • Has better sensitivity. • Less energy is needed from source. • Completes a scan in 1-2 seconds. • Takes several scans and averages them. • Has a laser beam that keeps the instrument accurately calibrated. =>