The determination of pH and dissolved oxygen (DO) with the SENSOLUX® system is based upon the principle of fluorescence. Each single SENSOLUX® EF contains two pre-calibrated sensor patches for pH and DO, respectively.
The actual measurement is performed optically and non-invasively from outside of the SENSOLUX® EF.
The sensor patches contain fluorescent dyes, which can be excited with light of a given wavelength.
Optical fibres integrated in the shaker tray transmit light of a particular wavelength to the sensor patches; in turn they also transmit the luminescence response from the patches to a measuring amplifier.
The characteristics and intensity of the light emitted is influenced by changes in the concentration of the parameters pH or DO, respectively.
