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1. (WO2018041597) METHOD AND DEVICE FOR INCREASING THE SENSITIVITY OF AN IN-LINE MEASUREMENT OF THE SURFACE CLEANLINESS OF STEEL STRIPS

Pub. No.:    WO/2018/041597    International Application No.:    PCT/EP2017/070373
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Aug 11 01:59:59 CEST 2017
IPC: G01N 21/71
Applicants: CENTRE DE RECHERCHES MÉTALLURGIQUES ASBL - CENTRUM VOOR RESEARCH IN DE METALLURGIE VZW
Inventors: MONFORT, Guy
MOREAS, Geneviève
Title: METHOD AND DEVICE FOR INCREASING THE SENSITIVITY OF AN IN-LINE MEASUREMENT OF THE SURFACE CLEANLINESS OF STEEL STRIPS
Abstract:
The present invention relates to a method for the automated, in-line measurement of the surface cleanliness, in terms of carbon pollution, of a continuously moving metal sheet or strip (3), characterised by a step of measuring the light intensity of an intense CN radical vibration line, which is correlated with the measurement of the intensity of a nitrogen vibration line in order to compensate for the fluctuations arising from the radiation beam and the radiation-matter interactions.