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  • BS 5844:1980

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    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    Methods of measurement of fluid flow: estimation of uncertainty of a flow-rate measurement

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  15-06-1998

    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
    Specification
    0. Introduction
    0.1 Notation
    0.2 Glossary
    Section one. General theory
    1. Scope and field of application
    2. General principles
    2.1 Terminology
    2.2 The relation between uncertainty and confidence
         level
    3. Nature of errors
    3.1 Spurious errors
    3.2 Random errors
    3.3 Systematic errors
    4. Propagation of errors
    4.1 Sensitivity
    4.2 Identification of sources of errors
    4.3 Combination of uncertainties
    5. Presentation of results
    Section two. Examples
    6. Notation
    7. Example of flow-rate measurement in circular pipes
    7.1 General calculations
    7.2 Detailed numerical example
    7.3 Simplified numerical example
    8. Example of open channel measurement
    8.1 The formula for volume flow in open channel
    8.2 The overall uncertainty of the flow determination
    8.3 Numerical example
    Annexes
    A. Tests for outliers
    B. Student's t distribution
    C. Uncertainty in variables for which the values are
         derived from independent experiments
    D. Combination of uncertainties

    Abstract - (Show below) - (Hide below)

    Calculations required in order to arrive at a statistical estimate of the interval within which the true flowrate may be expected to lie. The calculations are so presented as to be applicable to measurement in both closed and open ducts.

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

    Committee CPI/113
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn
    Superseded By

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

    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 7118-2:1989 Measurement of fluid flow: assessment of uncertainty in the calibration and use of flow measurement devices Non-linear calibration relationships
    BS 6199-1.2:1991 Measurement of liquid flow in closed conduits using weighing and volumetric methods. Weighing method Procedures for checking static weighing systems
    BS 3680-6:1995 Measurement of liquid flow in open channels Guide to measurement of flow in tidal channels
    BS 7834:1995 Specification for turbine meters used for the measurement of gas flow in closed conduits
    BS 1042-2.2:1983 Measurement of fluid flow in closed conduits. Velocity area methods Method of measurement of velocity at one point of a conduit of circular cross section
    BS 1042-2.4:1989 Measurement of fluid flow in closed conduits. Velocity area methods Method of measurement of clean water flow using current meters in full conduits and under regular flow conditions
    BS EN 60041:1995 Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines
    03/305320 DC : DRAFT MAY 2003 BS 1339 - HUMIDITY - PART 3: GUIDE TO THE MEASUREMENT OF HUMIDITY
    BS EN 29104:1993 Measurement of fluid flow in closed conduits. Methods of evaluating the performance of electromagnetic flow-meters for liquids
    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 3680-5:1992 Measurement of liquid flow in open channels Slope area method of estimation
    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 3680-4F:1990 Methods of measurement of liquid flow in open channels. Weirs and flumes Round nose horizontal broad-crested weirs
    BS 3122-1:1990 Refrigerant compressors Methods of test for performance
    BS 3680-3E:1993 Measurement of liquid flow in open channels. Stream flow measurement Measurement of discharge by the ultrasonic (acoustic) method
    BS 3680-4C:1981 Methods of measurement of liquid flow in open channels. Weirs and flumes Flumes
    BS 1339-3:2004 Humidity Guide to the measurement of humidity
    BS EN 27842:1991 Methods for determination of discharge capacity of automatic steam traps
    BS 1042-2.3:1984 Measurement of fluid flow in closed conduits. Velocity area methods Methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current-meters or Pitot static tubes
    00/122905 DC : DRAFT JULY 2000 BS 1339-3 - GUIDE TO THE MEASUREMENT OF HUMIDITY
    BS 7405:1991 Guide to selection and application of flowmeters for the measurement of fluid flow in closed conduits
    BS 3680-3D:1980 Measurement of liquid flow in open channels. Stream flow measurement Moving-boat method
    BS EN ISO 8316:1997 Method of liquid flow in closed conduits. Method by collection of the liquid in a volumetric tank
    BS EN ISO 6817:1997 Measurement of conductive liquid flow in closed conduits. Method using electromagnetic flowmeters
    EN 29104 : 1993 MEASUREMENT OF FLUID FLOW IN CLOSED CONDUITS - METHODS OF EVALUATING THE PERFORMANCE OF ELECTROMAGNETIC FLOW-METERS FOR LIQUIDS
    BS 3680-4I:1986 Methods of measurement of liquid flow in open channels. Weirs and flumes V-shaped broad crested weirs
    BS EN 24006:1993 Measurement of fluid flow in closed conduits. Vocabulary and symbols

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

    ISO 3534:1977 Statistics — Vocabulary and symbols
    ISO 748:2007 Hydrometry Measurement of liquid flow in open channels using current-meters or floats
    BS 3680-3A:1980 Measurement of liquid flow in open channels. Stream flow measurement Velocity-area methods
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