Transmission, Temperature-Time Loading

Schott started its cooktop panel production with Ceran Color (purple lavender tint). Today Schott produces a variety of cooktop panels made of different glass ceramic types, of which the two types  

Apart from higher transmission, Ceran Suprema also shows a significantly higher T-t loading limit, which specifies the maximmn permissible temperatures for given load times. At or below this hmit, cracking of cooktop panels due to compaction stress is excluded (see also Sect. 3.2.7). The 

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The thermistor is a thermal resistor, a semiconductor device whose resisance varies with temperature. Its circuit symbol and general appearance are shown in Fig. 3.95. They can be supplied in many shapes and are used for the measurement and control of temperature up to their maximum useful temperature limit of about 300 C. They are very sensitive and because the bead of semiconductor material can be made very small, they can measure temperature in the most inaccessible places with very fast response times. Thermistors are embedded in high-voltage underground transmission cables in order to monitor the temperature of the cable. Information about the temperature of a cable allows engineers to load the cables more efficiently. A particular cable can carry a larger load in winter, for example, when heat from the cable is being dissipated more efficiently. A thermistor is also used to monitor the water temperature of a motor car. 

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