File:Portable spectrophotometer.jpg
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Summary[edit]
| Description |
English: Minolta CM-508i portable spectrophotometer used for example in a lab to measure the yellowing of coatings (paints…) tested with an accelerated weathering QUV™ tester (which simulates the effects of sunlight, alternating with a cycle of condensation).
The color difference Δb*, equal to b* (paint after aging) - b* (paint before aging), must be < 2 according to the specifications of an automobile manufacturer. Français : Spectrophotomètre portable Minolta (modèle CM-508i) utilisé en laboratoire pour mesurer par exemple le jaunissement d'un revêtement (peinture automobile…) soumis à l'essai de vieillissement accéléré aux intempéries d'une enceinte QUV™ [qui expose les matériaux à des cycles alternés de lumière UV (simulant les effets de la partie UV du spectre solaire) et d'humidité à chaud]. La différence de couleur Δb*, égale à b* (peinture après vieillissement) - b* (peinture avant vieillissement), doit être < 2 d'après le cahier des charges d'un constructeur automobile. |
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| Source | Own work |
| Author | Cjp24 |
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
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| current | 08:22, 24 February 2011 | | 1,184 × 1,746 (247 KB) | Cjp24 (talk | contribs) | {{Information |Description ={{en|1=Minolta CM-508i Portable spectrophotometer used for example in the laboratory to measure the yellowing of paint to be tested on accelerated weathering of a radiate QUV apparatus (which simulates the effects of the Sun |
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