| 摘要 |
Process for in-service measurement of temperature in at least one cooking zone of a cooking area with a glass ceramic plate based on an empirically derived correlation between the transmission of light through the glass ceramic plate in a wavelength range of the temperature that is typical of the respective glass ceramic material, with the steps: irradiation of the glass ceramic plate in the cooking zone from the inside toward the outside with light in the wavelength range of 700-1500 nm, with the light being reflected at the outer surface of the glass ceramic plate and passing through the glass ceramic plate a second time; detection of reflected light with a photocell, generating a photocurrent that corresponds to the transmission of the glass ceramic plate in the cooking zone, and determination of the temperature of the cooking zone from the derived correlation between the transmission of light of the specified wavelength and the temperature of the glass ceramic plate.
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