DEVICE FOR MEASURING INTERNAL QUALITY

PROBLEM TO BE SOLVED: To provide a device for measuring internal quality, capable of improving the measurement accuracy of internal quality information by improving the measurement accuracy of data of a reference body, while preventing damages to the reference body for calibration. SOLUTION: This internal quality measuring device is provided with a reference body position changing means 48 capable of switching between a state, where the reference body 49 for calibration is positioned on a measuring spot Pm and a state, where the reference body 49 is positioned on a retreating spot Ps retreating from the measuring spot Pm, a measuring object presence/absence detection means for detecting presence/absence of the measuring object M on a placing part 51 on a furthermore upstream side spot than the measuring spot Pm in the conveyance direction of a conveyance means 4, and an abnormality processing means for operating the reference body position changing means so that the reference body 49 is positioned on the retreating spot Ps before the placing part 51, on which the measuring object M is placed reaches the measuring spot Pm, based on the detection information by the measuring object presence/absence detecting means. COPYRIGHT: (C)2006,JPO&NCIPI