Single beam photometer

Photometers are used to record optical spectra. They consist of a light source , a monochromator , a detector , an electronic amplifier and a display device .

calibration

Since the light sources have complex emission spectra and the sensitivity of the detector changes with the wavelength, a photometer must be calibrated before the measurement. If this is done by means of a comparative measurement without a sample, it is called a single-beam photometer .

Applications

Photometers are used, among other things, in: gas measurement technology, flue gas analyzer, measuring methods for air pollutants, chemical analysis (determination of substance content).

literature

Wolfgang Gottwald and Kurt Herbert Heinrich: UV / VIS - Spectroscopy for Users , Wiley-VCH, 1999, ISBN 3527287604