TEMPERATURE-MEASURING DEVICE OF STEEL PLATE

摘要

PROBLEM TO BE SOLVED: To provide a temperature-measuring device of a steel plate capable of measuring the temperature of the steel plate rapidly and with accuracy, without being affected by variations and changes with the passage of time, in each emissivity of a steel plate to be measured and a reflecting plate. SOLUTION: The temperature-measuring device of a steel plate includes: a channel 8 constituted of the reflecting plate 2, partition walls 4a, 4b, and a backplane 5; an electric heater 20 provided in the channel 8; a cooling gas 50 flowing in the channel 8; a power supply 25 for electric heaters for allowing current to flow to the electric heater 20; a solenoid valve 55 and a regulator 56 for supplying the cooling gas 50; a control means 30 for sending a command to them; and a steel plate temperature arithmetic circuit 60 for calculating an approximate value T1', which is regarded as steel plate temperature, based on radiosity temperature Tg, obtained by a radiation thermometer 3 from radiosity reflected between the reflecting plate 2 and the steel plate and reflecting plate temperature T2which is measured by a thermocouple 40. COPYRIGHT: (C)2009,JPO&INPIT