Intercomparison of the ITS-90 Radiance Temperature Scales of the NationalPhysical Laboratory (U.K.) and the National Institute of Standards and Technology

摘要

An intercomparison of radiance temperature scales has been performed by theNational Physical Laboratory (NPL) and the National Institute of Standards and Technology (NIST) using a standard transfer pyrometer operating at a wavelength of approximatelly 1000 nm. It was found that the radiance temperature scales established by the two laboratories were in agreement to 0.1% or better of the temperature over the range 1000 degrees C to 2500 degrees C.