METHOD AND INSTRUMENT FOR MEASURING TEMPERATURE

摘要

PROBLEM TO BE SOLVED: To precisely measure a temperature of a measured member. SOLUTION: The surface temperature of the measured member 12 inside a heating furnace 42 is measured precisely in a temperature distribution measuring instrument 10, since stray light noise (stray light radiation energy) emitted from a furnace wall 44 toward the measured member 12, reflected by a surface of the member 12 to be radiated from the surface of the member 12, and detected to be contaminated with radiation energy intensity is unified by a light shielding device 48, and since the stray light noise from the light shielding device 48 preliminarily found is removed.