International Temperature Scale of 1990

The International Temperature Scale of 1990 (ITS-90) is an equipment calibration standard specified by the International Committee of Weights and Measures (CIPM) for making measurements on the Kelvin and Celsius temperature scales. It is an approximation of thermodynamic temperature that facilitates the comparability and compatibility of temperature measurements internationally. It defines fourteen calibration points ranging from 0.65 K to 1357.77 K (−272.50 °C to 1084.62 °C) and is subdivided into multiple temperature ranges which overlap in some instances.ITS-90 is the most recent of a series of International Temperature Scales adopted by the CIPM since 1927.Adopted at the 1989 General Conference on Weights and Measures, it supersedes the International Practical Temperature Scale of 1968

International Temperature Scale of 1990

The International Temperature Scale of 1990 (ITS-90) is an equipment calibration standard specified by the International Committee of Weights and Measures (CIPM) for making measurements on the Kelvin and Celsius temperature scales. It is an approximation of thermodynamic temperature that facilitates the comparability and compatibility of temperature measurements internationally. It defines fourteen calibration points ranging from 0.65 K to 1357.77 K (−272.50 °C to 1084.62 °C) and is subdivided into multiple temperature ranges which overlap in some instances.ITS-90 is the most recent of a series of International Temperature Scales adopted by the CIPM since 1927.Adopted at the 1989 General Conference on Weights and Measures, it supersedes the International Practical Temperature Scale of 1968