7. Test weights
7.1 Precision class and tolerance
Weights are characterized by their conventional mass. This is equal to the total mass of the reference weights produced in a material with a density of 8,000 kg/m 3 , which balances the mass of this weight in air with a density of 1.2 kg/m 3 , the operation being carried out at 20°C.
Weights are divided into seven classes: E 1 , E 2 , F 1 , F 2 , M 1 , M 2 , M ...
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Test weights
Conclusion
Bibliography
Standards
- Quality management systems – Basic principles and vocabulary - NF EN ISO 9000 - 2015
- Quality management systems – Requirements - NF EN ISO 9001 - 2015
- Aspects métrologiques des instruments de pesage à fonctionnement non automatique - NF EN 45501 - 2015
- Vocabulaire international des termes fondamentaux et généraux de métrologie (VIM) - NF X07-001 (annulée) - 1994
- International Vocabulary of Metrology...
Regulations
International Recommendation OIML R76-1, "Non-automatic weighing instruments – Part 1: Metrological and technical requirements – Tests" available from the Bureau International de Métrologie Légale (Paris).
OIML International Recommendation R33, "Conventional value of air weighing results", available from the Bureau International de Métrologie Légale (Paris).
International recommendations...
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