Sensor zur strahlungspyrometischen Temperaturmessung unter Bedingungen hoher Umgebungstemperaturen

摘要

The invention relates to a sensor for the radiation-pyrometric measurement of the temperature of an object in high ambient temperatures inside a drier or the like. The sensor consists of a heat-conducting housing (1) with a window (2) transparent to heat radiation and at least one thermopile (3, 33) in the housing (1) consisting of thermocouples (18) of interconnected elements (18a, 18b) of mutually thermo-electrically active materials. A first radiation-sensitive connection (4, 34) between the elements (18a, 18b) faces the window (2) and they are distributed over a basic surface (25) of a substrate (5) facing the window (2). The substrate (5) consists of a heat-resistant and insulating material and has through apertures (19) in the basic area (25), each of which accepts an element (18a, 18b) of the thermocouples (18). The second reference connections (6, 36) of the thermocouples (18) are in a region shielded from the heat radiation.