NF ISO 1438

NF ISO 1438

August 2021
Standard Current

Hydrometry - Open channel flow measurement using thin-plate weirs

ISO 1438:2017 defines the requirements for the use of rectangular and triangular (V-notch) thin-plate weirs for the measurement of flow of clear water in open channels under free flow conditions. It includes the requirements for the use of full-width rectangular thin-plate weirs in submerged (drowned) flow conditions.

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Main informations

Collections

National standards and national normative documents

Publication date

August 2021

Number of pages

66 p.

Reference

NF ISO 1438

ICS Codes

17.120.20   Flow in open channels

Classification index

X10-351

Print number

1

International kinship

ISO 1438:2017
Sumary
Hydrometry - Open channel flow measurement using thin-plate weirs

ISO 1438:2017 defines the requirements for the use of rectangular and triangular (V-notch) thin-plate weirs for the measurement of flow of clear water in open channels under free flow conditions. It includes the requirements for the use of full-width rectangular thin-plate weirs in submerged (drowned) flow conditions.

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Symboles et abréviations
  • 5 Principe
  • 6 Installation
  • 7 Mesurage de la charge
  • 8 Entretien
  • 9 Déversoir en mince paroi rectangulaire
  • 10 Déversoir triangulaire en mince paroi
  • 11 Incertitudes relatives à la mesure de débit
  • 12 Exemple
  • Annexe A Mesure de débit avec petits bassins de déversoir
  • Annexe B Guide de conception et d'installation d'un stabilisateur d'écoulement
  • Annexe C Introduction à l'incertitude de mesure
  • Annexe D Performance des essais de mesure à utiliser à titre d'exemple en hydrométrie
  • Annexe E Tableaux de la relation hauteur/débit
  • Bibliographie
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