NF EN ISO 5198
Centrifugal, mixed flow and axial pumps. Code for hydraulic performance tests. Precision grade.
Forms the first of a set dealing with tests of pumps and specifies precision class tests (former class A). Engineering class I and class II tests (former classes B and C) will be the subject of a further standard. Defines the terms and quantities that are used and specifies general requirements for tests. Does not specify constructional tolerances.
Forms the first of a set dealing with tests of pumps and specifies precision class tests (former class A). Engineering class I and class II tests (former classes B and C) will be the subject of a further standard. Defines the terms and quantities that are used and specifies general requirements for tests. Does not specify constructional tolerances.
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0 Introduction1
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1 Objet1
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2 Domaine d'application1
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3 Références2
- Section un : Recommandations générales
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4 Définitions et symboles3
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5 Régime spécifié10
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6 Caractéristiques générales des essais10
- Section deux : Méthodes de mesure
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7 Mesurage du débit17
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8 Mesurage de la hauteur énergétique totale23
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9 Mesurage de la vitesse de rotation38
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10 Mesurage de la puissance absorbée par la pompe38
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11 Mesurage du rendement par la méthode thermodynamique41
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12 Essais de cavitation51
- Annexes
- A Evaluation et analyse des incertitudes58
- B Comparaison des résultats d'essai avec les valeurs spécifiées62
- C Propriétés thermodynamiques de l'eau et évaluation de l'exactitude des mesures de rendement par la méthode thermodynamique66
- D Autres essais de cavitation79
- E Pertes par frottement81
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