International Standardization Activities
As part of NIST’s mission to advance measurement science, standards, and technology in ways that enhance economic security and improve our quality of life, the Sensor Science Division actively participates in international and national standardization activities related to optical radiation, thermodynamic, fluid flow, and other quantities and measurements. These activities include participation and leadership roles in committees developing standards and recommendations for measurement of the above quantities, and international intercomparisons of units. For a list of their involvement, please see International Committee Work.
The Sensor Science Division also participates in international intercomparison activities. The CIPM (International Committee on Weights and Measures), and its Consultative Committees, defines and monitors units for optical radiation, thermodynamic and fluid flow quantities. In support of Mutual Recognition Arrangement (MRA) signed in 1999, the Consultative Committees conduct a series of international comparisons of fundamental units (called Key Comparisons), participated by national laboratories in different countries. The SSD takes the leadership in the Working Group for Fluid Flow in Consultative Committee for Mass (CCM) and the Working Group of Key Comparison in Consultative Committee for Photometry and Radiometry (CCPR), and participates in numerous working groups in Consultative Committee for Thermometry (CCT).
The detailed results and reports of these key comparisons are available at the BIPM Key Comparison Data Base. The details of the MRA, Key Comparisons, and CIPM activities are available at BIPM (Bureau of International des Poids et Mesures) website.