NF ISO 9368-1

NF ISO 9368-1

May 1991
Standard Current

Measurement of liquid flow in closed conduits by the weighing method. Procedures for checking installations. Part 1 : static weighing system.

Specifies methods of testing installations for flowrate measurement by the static weighing method. Table 1 lists the symbols of concern. The normative annexes A to E contain various examples for error estimation, assessment of the uncertainty and flowrate stability.

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Main informations

Collections

National standards and national normative documents

Publication date

May 1991

Number of pages

22 p.

Reference

NF ISO 9368-1

ICS Codes

17.120.10   Flow in closed conduits

Classification index

X10-145

Print number

1 - 01/04/1991

International kinship

ISO 9368-1:1990
Sumary
Measurement of liquid flow in closed conduits by the weighing method. Procedures for checking installations. Part 1 : static weighing system.

Specifies methods of testing installations for flowrate measurement by the static weighing method. Table 1 lists the symbols of concern. The normative annexes A to E contain various examples for error estimation, assessment of the uncertainty and flowrate stability.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Définitions et symboles
    1
  • 3.1 Définitions
    1
  • 3.2 Symboles
    1
  • 4 Agrément
    1
  • 5 Principes généraux
    2
  • 5.1 Eléments principaux de l'installation
    2
  • 5.2 Liquide d'essai
    2
  • 5.3 Principe des vérifications
    2
  • 5.4 Opérations préliminaires
    2
  • 6 Exécution des opérations de contrôle
    2
  • 6.1 Contrôle de la bascule
    2
  • 6.2 Contrôle du partiteur
    3
  • 6.3 Contrôle du chronomètre
    3
  • 6.4 Contrôle du système de mesurage de la masse volumique
    3
  • 6.5 Estimation de la stabilité du débit
    3
  • 6.6 Etude des caractéristiques de l'écoulement
    4
  • 7 Calcul de l'incertitude globale sur la mesure du débit
    4
  • Annexes
  • A Estimation des erreurs systématiques et aléatoires dues à la bascule
    6
  • B Contrôle du fonctionnement du partiteur
    9
  • C Estimation de la stabilité du débit dans l'intervalle d'intégration
    12
  • D Estimation de la stabilité entre les intervalles d'intégration
    14
  • E Contrôle des caractéristiques de l'écoulement
    16
  • F Bibliographie
    17
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