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  • BS 3680-3A:1980

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Measurement of liquid flow in open channels. Stream flow measurement Velocity-area methods

    Available format(s):  Hardcopy, PDF

    Superseded date:  15-10-1997

    Language(s):  English

    Published date:  30-04-1980

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    National foreword
    Cooperating organizations
    Methods
    1 Scope and field of application
    2 References
    3 Terminology
    4 Units of measurement
    5 Principle of the methods of measurement
    6 Selection and demarcation of site
    7 Measurement of cross-sectional area
    8 Measurement of velocity
    9 Computation of discharge
    10 Uncertainties in flow measurement
    Annexes
    A Methods of correcting for sag, pull, slope and
        temperature in measuring the width of cross-section
        by tape or wire
    B Methods of measurement across the cross-section
    C Correction for wetted length of wire when measuring
        depths with the wire not normal to the surface
    D Correction for drift
    E Uncertainty of a velocity area measurement
    Tables
    1 Air line correction
    2 Wet-line correction
    Figures
    1 Computation of discharge from current-meter
        measurement - Depth-velocity integration method
    2 Computation of discharge from current-meter
        measurement - Area-velocity integration method
    3 Computation of discharge from float measurement
    4 Computation of discharge and mean water-level for
        variations of water-level
    5 Measurement of cross-section - Angular method
    6 Measurement of cross-section - Projection from
        opposite bank
    7 Measurement of cross-section - Projection from one
        bank
    8 Measurement of cross-section - Pivot-point method

    Abstract - (Show below) - (Hide below)

    Methods for determining the velocity and cross-sectional area of water flowing in open channels (with or without ice cover) and computing the discharge. It covers methods of employing current meters and floats to measure the velocities.

    General Product Information - (Show below) - (Hide below)

    Committee CPI/113
    Development Note BS DRAFT 93/210839 DC
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 3680-2A:1964 Measurement of liquid flow in open channels. Dilution methods Constant rate injection
    BS 3680-3E:1986 Measurement of liquid flow in open channels. Stream flow measurement Measurement of discharge by the ultrasonic (acoustic) method
    BS 3680-3J:1989 Measurement of liquid flow in open channels. Stream flow measurement Guide to the measurement of discharge using three verticals
    BS 3680-4E:1980 Methods of measurement of liquid flow in open channels. Weirs and flumes Free overall weirs of finite crest width (rectangular broad-crested weirs)
    BS 3680-6:1995 Measurement of liquid flow in open channels Guide to measurement of flow in tidal channels
    BS EN 60041:1995 Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines
    BS 599:1966 Methods of testing pumps
    BS 3680-8A:1973 Measurement of liquid flow in open channels. Measuring instruments and equipment Current meters incorporating a rotating element
    BS 3680-3B:1997 Measurement of liquid flow in open channels. Stream flow measurement Guide for the establishment and operation of a gauging station
    BS 3680-4B:1986 Methods of measurement of liquid flow in open channels. Weirs and flumes Triangular profile weirs
    BS 3680-4E:1990 Methods of measurement of liquid flow in open channels. Weirs and flumes Rectangular broad-crested weirs
    BS 4485-2:1988 Water cooling towers Methods for performance testing
    BS 3680-8A:1989 Measurement of liquid flow in open channels. Measuring instruments and equipment Current meters incorporating a rotating element
    BS 3680-3E:1993 Measurement of liquid flow in open channels. Stream flow measurement Measurement of discharge by the ultrasonic (acoustic) method
    BS 3680-10B:1980 Measurement of liquid flow in open channels. Sediment transport Measurement of suspended sediment
    BS 3680-7:1971 Measurement of liquid flow in open channels The measurement of liquid level (stage)
    BS 3680-6:1973 Measurement of liquid flow in open channels Measurement of flow in tidal channels
    BS 6068-6.6:1991 Water quality. Sampling Guidance on sampling of rivers and streams
    BS 3680-3F:1986 Measurement of liquid flow in open channels. Stream flow measurement Collection and processing of data for determination of errors in measurement
    BS 3680-3D:1980 Measurement of liquid flow in open channels. Stream flow measurement Moving-boat method
    BS 3680-5:1970 Methods of measurement of liquid flow in open channels. Slope area method of estimation
    BS 3680-8B:1983 Measurement of liquid flow in open channels. Measuring instruments and equipment Recommendations for direct depth sounding and suspension equipment
    BS 5844:1980 Methods of measurement of fluid flow: estimation of uncertainty of a flow-rate measurement

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 5168:2005 Measurement of fluid flow — Procedures for the evaluation of uncertainties
    ISO 4373:2008 Hydrometry Water level measuring devices
    ISO 3454:2008 Hydrometry — Direct depth sounding and suspension equipment
    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 1100:1973 Withdrawal of ISO 1100-1973
    ISO 2537:2007 Hydrometry — Rotating-element current-meters
    ISO 772:1996 Hydrometric determinations — Vocabulary and symbols
    ISO 3455:2007 Hydrometry Calibration of current-meters in straight open tanks
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