NF EN ISO 748

NF EN ISO 748

January 2002
Standard Cancelled

Measurement of liquid flow in open channels - Velocity-area methods

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Main informations

Collections

National standards and national normative documents

Publication date

January 2002

Number of pages

50 p.

Reference

NF EN ISO 748

ICS Codes

17.120.20   Flow in open channels

Classification index

X10-301

Print number

1 - 26/09/2003

International kinship

ISO 748:1997

European kinship

EN ISO 748:2000
Replaced standards (1)
NF X10-301
October 1970
Published document Cancelled
Measurement of water flow in open channels by velocity area methodsusing propeller current meters.

Standard replaced by (1)
NF EN ISO 748
April 2009
Standard Cancelled
Hydrometry - Measurement of liquid flow in open channels using current-meters or floats

ISO 748:2007 specifies methods for determining the velocity and cross‑sectional area of water flowing in open channels without ice cover, and for computing the discharge therefrom. ISO 748:2007 covers methods of employing current‑meters or floats to measure the velocities. It deals only with single measurements of the discharge; the continuous recording of discharges over a period of time is covered in ISO 1100-1 and ISO 1100-2.

Table of contents
  • Avant-propos
    iv
  • 1
    Domaine d'application 1
  • 2
    Référence normative 1
  • 3
    Termes et définitions 1
  • 4
    Principe des méthodes de mesurage 2
  • 5
    Choix et délimitation de l'emplacement 2
  • 6
    Mesurage de l'aire de la section 3
  • 7
    Mesurage de la vitesse 5
  • 8
    Calcul du débit 14
  • 9
    Incertitudes dans le mesurage du débit 21
  • Annexe A (informative) Correction du fléchissement, de la traction, de l'inclinaison et de la température dans le mesurage de la largeur de la section par ruban ou par câble
    28
  • Annexe B (informative) Mesurage transversal de la section
    31
  • Annexe C (informative) Corrections de longueur immergée du câble dans le mesurage des profondeurs par un câble non perpendiculaire à la surface
    34
  • Annexe D (informative) Correction de dérive
    36
  • Annexe E (informative) Incertitudes dans le mesurage de débit par exploration du champ des vitesses
    37
  • Annexe F (informative) Calcul de la vitesse moyenne à partir des mesurages au flotteur
    42
  • Bibliographie
    44
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