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Summary
DescriptionUV degradation test chamber.jpg |
Français : Enceinte QUV™ pour essais de vieillissement accéléré aux intempéries de matériaux. Une chambre d'essais simule les effets des intempéries : exposition aux UV plus humidité et chaleur (à T≈60 °C, par exemple). Appareil utilisé par exemple pour tester le jaunissement de revêtements (tels des peintures blanches). Il peut contenir 48 plaques échantillons de 150 × 75 mm.
English: QUV™ accelerated weathering tester. It exposes materials to alternating cycles of UV light and moisture at elevated temperatures (at T≈60 °C for example). QUV is used for example to test the yellowing of coatings (such as white paints). QUV tester simulates the effects of sunlight, and dew and rain with condensing humidity. Up to 48 specimens (150 × 75 mm) can be tested. |
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Source | Own work |
Author | Cjp24 |
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Annotations InfoField | This image is annotated: View the annotations at Commons |
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Deionized water input.
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"UV Irradiance Controller": to choose the level of irradiance (light intensity). This light control system maintains the irradiance (because lamps decline in output as they age). UV light from each pair of lamps is measured by UV sensors.
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English: "Accelerated Weathering Tester"
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English: Under this swing-up door: test specimens then QUV's two pairs of fluorescent UV lamps are found. A (deionised or distilled) water reservoir (in the bottom of the test chamber) is heated during the condensation cycle.
Weathering (for this test: temperature and moisture) and light exposure (especially short-wave UV) cause damage to some materials (especially to organic materials).
Weathering (for this test: temperature and moisture) and light exposure (especially short-wave UV) cause damage to some materials (especially to organic materials).
Français : Emplacement des plaques-échantillons, qui sont placées entre ce capot (pivotant vers le haut) et deux paires de tubes UV fluorescents. (La disposition est identique à l'autre côté de l'appareil.) Un réservoir d'eau (déminéralisée ou distillée), situé dans la partie inférieure de la chambre d'essais, est chauffé au cours du cycle de condensation.
Les intempéries (pour ce test : température et humidité) et l'exposition à la lumière (en particulier les UV de faible longueur d'onde) dégradent certains matériaux (en particulier les matériaux organiques).
Les intempéries (pour ce test : température et humidité) et l'exposition à la lumière (en particulier les UV de faible longueur d'onde) dégradent certains matériaux (en particulier les matériaux organiques).
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current | 00:49, 30 June 2011 | 2,027 × 1,944 (1.07 MB) | Cjp24 |
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Exposure time | 1/50 sec (0.02) |
F-number | f/2.8 |
Date and time of data generation | 14:58, 2 June 2009 |
Lens focal length | 4.6 mm |
File change date and time | 14:58, 2 June 2009 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 14:58, 2 June 2009 |
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Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
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