NFP 98 744-4 : 2009
Current
The latest, up-to-date edition.
ROAD CONSTRUCTION AND MAINTENANCE EQUIPMENT - ON-SITE CALIBRATION AND VERIFICATION OF THE SETTINGS OF CONTINUOUS DOSING APPARATUS OF MATERIAL PRODUCTION PLANTS - PART 4: DRY BULK WEIGHING DOSING MACHINE - BELT SAMPLING TEST
12-01-2013
Avant-propos
1 Domaine d'application
2 Références normatives
3 Termes et définitions
4 Principe
5 Appareillage
6 Mode opératoire
6.1 Opérations préalables
6.2 Essai élémentaire
6.3 Calibrage du doseur
6.4 Vérification du réglage
6.5 Qualification d'un doseur
7 Calcul et expression des résultats
7.1 Validité des essais
7.2 Validité de la droite de calibrage
7.3 Validité de l'écart de vérification
7.4 Validité de la régulation
8 Rapport d'essai
Annexe A (informative) Exemple de présentation de
rapport d'essai
Le présent document spécifie la méthode permettant d'effectuer: les réglages et le calibrage des doseurs pondéraux à pulvérulent à table entièrement pesée, utilisés dans une centrale de fabrication des mélanges granulaires (NF P 98-701), par prélèvements de granulat sur la courroie du doseur; la vérification du réglage du doseur (en particulier, la régulation pour des fluctuations de charge), par simulation de la charge à l'aide de masses marquées.
| DevelopmentNote |
Indice de classement: P98-744-4. PR NFP 98 744-4 October 2007. (10/2007)
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| DocumentType |
Standard
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| PublisherName |
Association Francaise de Normalisation
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| Status |
Current
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