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Thermal Measurement Section

Thermal Measurement Section


Last modified 1998/7/22
(Introduction of Laboratory)
1995FY-1996FY
Thermophysical Metrology Department
Thermal Measurement Section
Tel:(0298)54-4031 / Fax:(0298)54-4010

(Laboratory Members)
Fumihiro Sakuma(Head), Yoshiko Ohwada, Hiroaki Sakate, Yoshiro Yamada, Juntaro Ishii

(Main Research Field)
Development of radiation and establishment of standards
Development of measuring technique of radiometry and radiation thermometry and
their application

(Main Research Subject)
1. Non contact thermometry of human body surface by thermal radiation
(Industrial Science and Technology Frontier Program, FY1990~1998)
2 Research on improving and validating the international temperature scale in the
medium and high temperature range (Special Project, FY1996~2000)
3. Research on development and transfer technology of radiation thermometers and
standard radiation sources. (APEC ITIT Project, FY1996~2001)
4.Research on measurement technology and reference materials for thermophysical
properties of solids
5. Dissemination of radiation temperature standards

(Laboratory's Inherent Technologies)
1. Technique for establishing standards of radiation thermometers
2. Technique for calibrating radiation thermometers
3. Technique for estimating characteristics of radiation thermometers
4. Technique for temperature measurement by using radiation thermometer
5. Technique for using thermal imagers
6. Technique for calibrating spectral radiance

(List of Laboratory's Major Output)
1. Realization of ITS-90 scale at high temperatures and intercomporison of the scales
2. Realization of an alumina-point blackbody
3. Emissivity database of metal materials
4. Behavior of metal emissivity in the process of oxidation in the air
5. Calculation of temperature distribution based on spectral radiance measurement
6. Measurement of respiration with a thermal imager
7. Cross-calibration experiment before launch among OCTS , POLDER, and AVNIR on ADEOS satellite.

(List of Future Possible Research Themes)
1. Extension of dissemination of radiation thermometer standards to higher@temperature ranges
2. Extension of radiation thermometer standards to lower temperature ranges
3. Research on a database for emissaries
4. Application of thermography
5. Application to remote sensing

(Activities for Standards Dissemination)
1. Round-robin measurement of radiation thermometer
@The Research Committee of Practical Temperature Standards in Japan Electric Meter Inspector Corporation (JEMIC) holds
once in two years a round-robin measurement of 0.9ƒÊm silicon radiation thermometer in order to confirm of thermometry techniques of the participants. This section contributes to the traceability of radiation thermometer through the technical advise to the round-robin measurement.
2. Calibration of fixed-point blackbody
@Fixed-point blackbodies are used for the standards of radiation thermometer scale at the thermometer manufactures.
Better than 0.3Ž accuracy is requested for the calibration. This section is responsible for the comparison of fixed-point
blackbody to be tested and those at NRLM regarding the copper, silver, aluminum and zinc points.

(International Collaboration)
@NRLM has concluded Record of Discussions with the NIST, IMGC and PTB for there year joint research project from 1993
to March 1996 and carried out international cooperation though exchange of researches and intercomporison experiment on scales.
|International comparison|
1. First round-robin experiment of 0.65 (m silicon radiation thermometer in 1993
2. Round-robin experiment of 0.9 (m silicon radiation thermometer in 1994
3. Second round-robin experiment of 0.65 (m silicon radiation thermometer in 1995
|Guest researches from abroad|
1. Dr. J. Fisher from PTB Jan. 15 to Feb. 13 in 1993
2. Dr. B. C. Johnson from NIST Feb. 12 to March 3 in 1994

šContact: Thermal Measurement Sectionš
E-mail:fsakuma@nrlm.go.jp
Tel:+81-XXX-XX-4031, Fax:+81-XXX-XX-4010