GB/T 39388-2020 (English Version) PDF

Scope: This standard applies to illuminometers and luminance meters. This standard defines the quality indicators for the performance characterization of the above-mentioned equipment used in general lighting measurement, as well as the measurement process and standard calibration procedures for each indicator. The measurement of illuminance and luminance and their accuracy are affected by many factors such as operating conditions, characteristics of the light source and characteristics of the photometer used. For a specific measurement task, the measurement uncertainty cannot be estimated only according to the characteristics of the photometer. In most cases, however, better-performing devices have smaller measurement uncertainties than poorer-performing devices. This standard aims to: ——Provide a clear definition for each quality index; ——Specify the measurement steps and methods for quantitatively evaluating these quality indexes; ——Stipulate the calibration conditions for illuminometers and luminance meters.

GB/T 39388-2020 Referenced Document

GB/T 20151-2006 Photometry.The CIE system of physical photometry
ISO 11664-2:2007 Colorimetry - Part 2: CIE standard illuminants
ISO/IEC GUIDE 99:2007 International vocabulary of metrology - Basic and general concepts and associated terms (VIM)

2020 GB/T 39388-2020 Characterization of the performance of illuminance meters and luminance meters