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

Paul-Gerald Dittrich, Dietrich Hofmann

Abstract

Aim of the paper is to show that the colorimetric characterization of optically clear colored liquids can be performed with so called dielectric-interference multi-spectral 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 multi-spectral 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.

Keywords

multi-spectral micro sensors, photonic micro sensors, color, spectral

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IMEKO-WC-2015-TC7-182.pdf

DOI

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IMEKO TC

TC7 - Measurement Science

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