ISO 2425:1999/Amd 1:2003

INTERNATIONAL ISO
STANDARD 2425
Second edition
1999-04-15
AMENDMENT 1
2003-12-01

Measurement of liquid flow in open
channels under tidal conditions
AMENDMENT 1
Mesure de débit des liquides dans les canaux découverts dans des
conditions de marée
AMENDEMENT 1




Reference number
ISO 2425:1999/Amd.1:2003(E)
©
ISO 2003

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ISO 2425:1999/Amd.1:2003(E)
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ISO 2425:1999/Amd.1:2003(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
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Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO 2425:1999 was prepared by Technical Committee ISO/TC 113, Hydrometry,
Subcommittee SC 1, Velocity area methods.

© ISO 2003 — All rights reserved iii

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ISO 2425:1999/Amd.1:2003(E)

Measurement of liquid flow in open channels under tidal
conditions
AMENDMENT 1
Cover page
Replace the title in French with “Mesure de débit des liquides dans les canaux découverts dans des
conditions de marée”.
Page 2, Subclause 4.3.1
Add the following sentence at the end of the subclause:
“This value, when used in conjunction with the cross-sectional area, will provide an estimate of the flow in
the channel.”
Page 2, Subclause 4.3.2
Replace the last sentence with the following:
“After calibration, measurements of electrical parameters and water depth provide a means of estimating
the discharge.”
Page 3, Subclause 5.1 c)
In the first line, replace “usually” with “could”.
Page 3, Subclause 5.2.1
Replace the penultimate sentence with the following:
“Under variable or unstead
...