CAVITY TYPE BLACKBODY FURNACE FOR CALIBRATION OF RADIATION THERMOMETER

摘要

PROBLEM TO BE SOLVED: To provide a cavity type blackbody furnace for calibration of a radiation thermometer which implements a desired calibration with a high degree of precision by minimizing temperature distribution on a cavity wall surface of a cavity type blackbody which may be an error factor for calibrating a radiation thermometer. ;SOLUTION: In a blackbody furnace 1 comprising a cavity type blackbody 2 having a cavity 3 therein, one or more holes 23 are provided at a bottom inner periphery or a top inner periphery of an opening 4 of the cavity 3, and inert gas or air G whose temperature is nearly equal to the control temperature of the cavity wall surface is blown out of the holes 23.;COPYRIGHT: (C)2001,JPO