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Title:
METHOD AND DEVICE FOR CALIBRATING TEMPERATURE
Document Type and Number:
Japanese Patent JP3404531
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To improve the accuracy of calibration, of a radiation thermometer and any other thermometers used in a high temperature range for realizing a fixed point in the temperature range over the copper point.
SOLUTION: The thermal fixed point device has a thermal fixed point crucible 4 therein and a furnace in which the ambient temperature of the thermal fixed point crucible 4 is raised and dropped, and the change of temperature is measured using the thermometer, and the thermometer 9 is calibrated based on the state of the change of temperature measured. The thermal fixed point crucible 4 is composed of a crucible, the element of which is carbon, and a fixed point material which is inserted and sealed in the crucible and has the eutectic structure of carbide and carbon or the eutectic structure of carbon solid solution and carbon.


Inventors:
Sasajima, Naohiko
Yamada, Yoshiro
Application Number:
JP2001000058447
Publication Date:
March 07, 2003
Filing Date:
March 02, 2001
Export Citation:
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Assignee:
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL & TECHNOLOGY
International Classes:
G01J5/00; G01J5/02; G01J5/10; G01K15/00; (IPC1-7): G01K15/00; G01J5/02; G01J5/10