Knowledge Base

Colorimetric quantities explained

This article explains the topic from the perspective of ISO/IEC 17025 spectroradiometer calibration.

Overview

Reliable spectroradiometric measurements depend on the complete optical measurement chain, including detector, entrance optics, wavelength scale, spectral responsivity and the intended application. The purpose of this article is to help engineers prepare instruments for traceable calibration and interpret calibration certificates correctly.

Key recommendations

Identify the exact model and optical configuration.
Define the required measurands before requesting calibration.
Review uncertainty requirements against the application.
Keep previous certificates with the instrument history.