NF EN ISO 748

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.

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Collections

National standards and national normative documents

Publication date

April 2009

Number of pages

55 p.

Reference

NF EN ISO 748

ICS Codes

17.120.20   Flow in open channels

Classification index

X10-301

Print number

1 - 20/04/2009

International kinship

ISO 748:2007

European kinship

EN ISO 748:2007
Sumary
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.

Replaced standards (1)
NF EN ISO 748
January 2002
Standard Cancelled
Measurement of liquid flow in open channels - Velocity-area methods

Standard replaced by (1)
NF EN ISO 748
December 2021
Standard Current
Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements

This document specifies methods for determining the velocity and cross-sectional area of water flowing in open channels and for calculating the discharge employing point velocity measurement devices. It is applicable to methods using rotating-element current meters, acoustic doppler velocimeters (ADVs), acoustic doppler current profiler (ADCP) stationary method, surface velocity measurement including floats and other surface velocity systems. Although some general procedures are discussed, this document does not describe in detail how to use or deploy these systems. NOTE         For detailed procedures, refer to guidelines from instrument manufacturers and the appropriate public agencies.

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