CIE 231:2019 PDF Download

The CIE 231:2019 standard provides a thorough framework for assessing the performance of illuminance and luminance meters. It expands on ISO/CIE 19476:2014 and CIE S 023:2013 by describing existing national and regional classification systems and advocating for a single CIE classification system.

The suggested classification system, unlike prior approaches, takes into account the ambiguity in determining quality indices. It assigns a class to each quality index, ranging from 4 (highest quality) to 1 (lowest quality). The overall categorization of the instrument is determined by the lowest class across all indicators.

Furthermore, in the annex, the standard contains recommended application-related requirements, underscoring the significance of considering specific needs and settings while employing these measurement devices. This standard is notable for being the first worldwide agreed-upon categorization system for photometric measurement instruments, giving a universal benchmark for evaluating their performance.