SPECTRAL-IRRADIANCE SCALE BASED ON RADIOMETRIC BLACK-BODY TEMPERATURE-MEASUREMENTS

A radiometric method to measure high temperatures of black bodies usin g broadband-filter detectors is presented. Results of temperature meas urements using a linear pyrometer and filter detectors, respectively, are compared. The performance of the black-body source and the realiza tion of an interim detector-based spectral-irradiance scale are descri bed and discussed. The new scale is compared with the results of the 1 990 Comite Consultatif de Photometrie et Radiometrie intercomparison o f spectral-irradiance measurements.