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Article: General Conference on Weights and Measures

General Conference on Weights and Measures

General Conference on Weights and Measures (CGPM)

  • The CGPM is the supreme authority of the International Bureau of Weights and Measures (BIPM).
  • It is made up of delegates of member states and observers from the Associates of the CGPM.
  • The CGPM elects the International Committee for Weights and Measures (CIPM) as the supervisory board of the BIPM.
  • The Metre Convention, established in 1875, initially focused on the kilogram and the metre.
  • In 1960, the 11th CGPM approved the International System of Units (SI).
  • The CGPM meets in Paris, usually once every four years.
  • The 25th meeting of the CGPM took place in 2014, the 26th in 2018, and the 27th is scheduled for 2022.
  • The CGPM approves the budget for the BIPM, which was over €13 million in 2018.
  • The CGPM decides major issues concerning the organization and development of the BIPM.
  • Former associate members of the CGPM include Cuba, Seychelles, and Sudan.

International Committee for Weights and Measures (CIPM)

  • Consists of eighteen members of different nationalities.
  • Elected by the CGPM.
  • Promotes worldwide uniformity in units of measurement.
  • Takes direct action or submits proposals to the CGPM.
  • Meets annually to discuss reports from Consultative Committees.
  • Secretariat based in Saint-Cloud, Hauts-de-Seine, France.
  • Established the Mutual Recognition Arrangement (MRA) in 1999.
  • Framework for mutual acceptance of national measurement standards.
  • Recognizes validity of calibration and measurement certificates.
  • Recent focus on the revision of the SI.
  • Consultative committees assist the CIPM in its work.
  • Reports of CIPM meetings, annual report to governments, and other reports are produced.

Role of the BIPM

  • The BIPM studies and reports on long-term national and international needs in metrology.
  • It collaborates with organizations like OIML and ILAC to meet these needs.
  • The BIPM plays a unique role in metrology.
  • Financial and other commitments are required from Member States.
  • Developing countries need to be involved in the world of metrology.
  • The CIPM is responsible for commissioning the SI brochure.
  • The brochure defines the International System of Units.
  • The brochure was initially in French but is now published in both English and French.
  • The latest edition includes the 2019 redefinition of the SI base units.

Purpose and History of the General Conference on Weights and Measures

  • Established in 1875.
  • International organization.
  • Ensures uniformity in measurements worldwide.
  • Promotes fair trade and scientific cooperation.
  • Develops and maintains the International System of Units (SI).
  • Composed of member states.
  • Currently has 62 member states.
  • Each member state has one vote.
  • Meets every four years.
  • Executive Committee oversees the work between meetings.
  • Development of the SI system.
  • Redefinition of fundamental units of measurement.
  • Establishment of the International Bureau of Weights and Measures (BIPM).
  • Adoption of the International System of Quantities.
  • Promotion of traceability and metrological standards.

Impact and Importance of the General Conference on Weights and Measures

  • Ensures consistency in global measurements.
  • Facilitates international trade and commerce.
  • Supports scientific research and innovation.
  • Provides a framework for metrological cooperation.
  • Enables accurate and reliable measurements in various fields.
  • Addressing emerging measurement needs in technology and industry.
  • Promoting metrological education and training.
  • Enhancing international cooperation on measurement standards.
  • Developing new measurement techniques and instruments.
  • Ensuring the continued relevance and effectiveness of the organization.

General Conference on Weights and Measures Data Sources

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