The Japanese traceability system and the role of uncertainty evaluation in measurement

被引：0

作者：

H. Imai

H. Ijima

机构：

[1] National Research Laboratory of Metrology,

[2] 1-1-4,undefined

[3] Umezono,undefined

[4] Tsukuba,undefined

[5] Ibaraki 305,undefined

[6] Japan Tel.: +81 298 54 4059; Fax: +81 298 54 4009 e-mail: imai@nrlm.go.jp,undefined

[7] Chemicals Inspection and Testing Institute,undefined

[8] Japan 4-1-1,undefined

[9] Higashi-mukoujima,undefined

[10] Sumida-ku,undefined

[11] Tokyo 131,undefined

[12] Japan Tel.: +81 3 3614 1101,undefined

来源：

Accreditation and Quality Assurance | 1997年 / 2卷

关键词：

Key words Traceability of measurement; Calibration; Certified reference materials; National metrology institute; Measurement uncertainty;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The new traceability system of measurement standards based on the Japanese Measurement Law has been established since November 1993. Some reference materials such as metal standard solutions, pH standard solutions and standard gas mixtures are included in the system together with relevant physical quantities. In this system, primary measurement standard instruments or primary reference materials are designated by the regulation for each quantity. For the practical dissemination of each quantity, accreditation of calibration bodies is recognized by the steering committee under the supervision of the government. In the course of assessment of a candidate calibration body, the concepts of ISO/IEC Guide 25 and ISO/IEC Guide 58 are effectively introduced. For the estimation of reliability, the concept of how to introduce the statistical approach is effectively considered. The method of uncertainty evaluation described in the ISO document entitled "Guide to the expression of uncertainty in measurement" is adopted.

引用

页码：150 / 153

页数：3