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IEC 60068-3-11-ed.1.0
Environmental testing - Part 3-11: Supporting documentation and guidance - Calculation of uncertainty of conditions in climatic test chambers
STANDARD published on 15.5.2007
The information about the standard:
Designation standards: IEC 60068-3-11-ed.1.0
Publication date standards: 15.5.2007
SKU: NS-408686
The number of pages: 68
Approximate weight : 204 g (0.45 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60068-3-11-ed.1.0 :
Demonstrates how to estimate the uncertainty of steady-state temperature and humidity conditions in temperature and humidity chambers. Since this is inextricably linked to the methods of measurement, these are also described. This standard is equally applicable to all environmental enclosures, including rooms or laboratories. The methods used apply both to temperature chambers and combined temperature and humidity chambers. This standard is meant to help everyone using climatic test chambers. Those already familiar with uncertainty of measurement will find it useful for guidance on typical sources of uncertainty and how they should be quantified and combined. It is also intended to assist the first-time or occasional user who has little or no knowledge of the subject. To discuss uncertainty, it is important first to understand what is being measured or characterized. The calibration or characterization of the performance of a chamber is concerned with the humidity and temperature of the air in the chamber, as experienced by the item under test, at a given set point. This should not be confused with characterizing or calibrating the chamber sensor, which is a separate matter. Montre comment estimer lincertitude des conditions de temperature et dhumidite a letat stable dans une chambre dessais de temperature et dhumidite. Sachant que cela est inextricablement lie aux methodes de mesures, celles-ci sont egalement decrites. La presente norme est egalement applicable a tout type denceintes denvironnement, et meme les salles ou laboratoires. Les methodes sont usuellement appliquees aux chambres dessais regulees en temperature et aux chambres dessais regulees en temperature et humidite. La presente norme cherche a aider toute personne utilisant des chambres dessais climatiques. Les personnes etant deja familieres avec lincertitude de mesure la trouveront utile pour les conseils sur les composantes types dincertitudes et sur la maniere dont il convient de les quantifier et de les combiner. Elle est egalement destinee a aider le nouvel utilisateur ou lutilisateur occasionnel qui na quune faible connaissance du sujet ou pas de connaissance du tout. Afin daborder les incertitudes il est important tout dabord de comprendre ce qui est mesure ou caracterise. Letalonnage ou la caracterisation de la performance dune chambre dessais fait appel a la determination de lhumidite et de la temperature de lair de la chambre, vu par lobjet en essai, a une valeur de consigne donnee. Il convient que cela ne soit pas confondu avec le calibrage ou letalonnage du capteur de la chambre dessai, qui est une operation differente.
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