Fourier Transform Infrared Spectrometry (FTIR)

The FTIR spectrometer is a highly advanced instrument for the measurement of a wide range of gases. The technique is based on infrared absorption. An infrared light beam is sent through a gas cell, the components brought into this cell absorb the infrared light at its specific wavelength. The absorption is proportional to the concentration. This specific instrument (Siemens SESAM1) is developed in cooperation with Siemens, Nicolet and Volkswagen/Audi and is therefore particularly suitable for measurement of 28 components in car exhaust gases, or the same components in other mixtures, which are measured typically in the ppm range, depending on the component.