Description
Oxygen measuring instrument
The Digox Optical is a state-of-the-art oxygen measuring device based on the principle of the dynamic fluorescence Quenching. The device uses neither a membrane nor an electrolyte. Also, the principle is independent of the CO2 concentration of the sample and the sample flow. Additional features are a low maintenance and a
longer uptime.
A blue light source excites a luminophore in the sensor cap. Electrons of the luminophore absorb the energy of the incident blue light and are transferred to a higher energy level. Within a very short time (Microseconds) the electrons revert to lower energy levels and the energy is released in form of a red light. Oxygen is able to take over the energy of the excited electrons of the luminophore and the intensity of the emitted red light is a function of the oxygen
concentration in the sample. Also, the presence of oxygen molecules accelerates the process of the electrons for leaving the higher energy level. The intensity of the emitted red light and the fading time of the red light are a function of the oxygen concentration in the sample. The resulting life period of the emitted red light directly indicates the oxygen concentration in the sample.
Dr. Thiedig is the leading supplier for steam and water analysing systems and analysers. Our steam and water analysing systems and analysers have been developed for the monitoring of the specific, acid and degassed acid conductivity, the pH-value, + the oxygen concentration, the Na and silica concentration in feed water, steam,
boiler water, condensate of steam cycles and many others.
