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- ItemSensor for oxygen activity measurements in glass melts(Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 1991) Müller-Simon, Hayo; Mergler, Kurt W.Traditional oxygen activity measurement in glass melts is based on Y2O3-stabilized ZrO2 which, in continuous use in the glassworks, is subjected to considerable wear. The present paper describes an oxygen sensor that is not equipped with wear parts. The new sensor is far less sensitive to temperature gradients in the surrounding area than ZrO2 sensors; the oxygen measurement, however, is greatly disturbed at direct flame irradiation.
- ItemVoltammetric sensor for glass tanks(Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 1992) Zink, Marianne; Rüssel, Christian; Müller-Simon, Hayo; Mergler, Kurt WilhelmVoltammetric methods formerly solely applied to laboratory experiments were used for measurements in a green glass tank. The applied experimental parameters had to be restricted to step times of 20 ms or more using square-wave voltammetry and frequencies of 35 s^-1 or lower using alternating current voltammetry. Within these limitations, the voltammetric sensor used was fairly suitable for these measurements. The adjustment of the electrode area, i.e. the dip-in length of the electrodes, could easily be controlled by conductivity measurements between the electrodes. The obtained voltammetric curves were fairly similar to those obtained from laboratory experiments and were predominantly affected by the iron concentration of the glass melt.