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BS EN ISO 748:2007

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Hydrometry. Measurement of liquid flow in open channels using current-meters or floats
Available format(s)

Hardcopy , PDF

Superseded date

12-13-2021

Language(s)

English

Published date

11-30-2007

Publisher

British Standards Institution

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle of the methods of measurements
5 Selection and demarcation of site
6 Measurement of cross-sectional area
7 Measurement of velocity
8 Computation of discharge
9 Uncertainties in flow measurement
Annex A (informative) - Correction for sag, pull,
        slope and temperature in measurement of
        cross-section width by tape or wire
Annex B (informative) - Distance measurement
        across the cross-section
Annex C (informative) - Corrections for wetted
        length of wire when measuring depths with
        wire not normal to surface
Annex D (informative) - Correction for drift
Annex E (informative) - Uncertainties in the velocity-area
        measurement
Annex F (informative) - Determination of mean velocity
        from float measurements
Bibliography

Describes methods for determining the velocity and cross-sectional area of water flowing in open channels without ice cover, and for computing the discharge therefrom.

This International Standard 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.

It covers methods of employing current-meters or floats to measure the velocities. It should be noted that although, in some cases, these measurements are intended to determine the stage-discharge relation of a gauging station, this International Standard deals only with single measurements of the discharge; the continuous recording of discharges over a period of time is covered in ISO1100-1 and ISO1100-2.

NOTE The methods for determining the velocity and cross-sectional area of water flowing in open channels with ice cover are specified in ISO9196.

Committee
CPI/113
DevelopmentNote
Supersedes BS ISO 748. (10/2000) Supersedes 93/210839 DC. (06/2005)
DocumentType
Standard
Pages
58
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

ISO 5168:2005 Measurement of fluid flow — Procedures for the evaluation of uncertainties
ISO 1100-2:2010 Hydrometry Measurement of liquid flow in open channels Part 2: Determination of the stage-discharge relationship
ISO 4373:2008 Hydrometry Water level measuring devices
ISO 3454:2008 Hydrometry — Direct depth sounding and suspension equipment
ISO 4369:1979 Measurement of liquid flow in open channels Moving-boat method
ISO/TS 15768:2000 Measurement of liquid velocity in open channels — Design, selection and use of electromagnetic current meters
ISO 4366:2007 Hydrometry — Echo sounders for water depth measurements
ISO 1088:2007 Hydrometry Velocity-area methods using current-meters Collection and processing of data for determination of uncertainties in flow measurement
ISO/TR 9209:1989 Measurement of liquid flow in open channels Determination of the wetline correction
ISO 1100-1:1996 Measurement of liquid flow in open channels Part 1: Establishment and operation of a gauging station
ISO 4375:2014 Hydrometry Cableway systems for stream gauging
ISO 2537:2007 Hydrometry — Rotating-element current-meters
ISO 9196:1992 Liquid flow measurement in open channels — Flow measurements under ice conditions
ISO 772:1996 Hydrometric determinations — Vocabulary and symbols
ISO 3455:2007 Hydrometry Calibration of current-meters in straight open tanks
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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Hardcopy - English
PDF - English
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