PHOTONIC MICRO SENSORS FOR MOBILE COLOR AND SPECTRAL CHARACTERIZATION OF COLORED LIQUIDS IN LABORATORIES AND IN FIELD

摘要

Aim of the paper is to show that the colorimetric characterization of optically clear colored liquids can be performed with so called dielectric-interference multispectral micro sensors in comparison to spectral sensors. Multi-spectral micro sensors and spectral sensors are differentiated by their spectral resolution, measurement speed, accuracy and cost. Multi-spectral micro sensors are less expensive. The paper describes how dielectric-interference multi-spectral micro sensors are calibrated with application specific calibration methods and conventional liquid color standards, methodically and theoretically. The paper proofs that and how dielectric-interference multispectral micro sensors can be applied with smartpads for the calculation of measurement results both in laboratory and in field. A given practical example is the application for the colorimetric characterization of petroleum oils and fuels and their colorimetric characterization by the Saybolt color scale.