AGA XQ9017 : 0

1.1 Introduction
      1.1.1 Scope
      1.1.2 Organization of Standard
      1.1.3 Referenced Publications
1.2 Field of Application
      1.2.1 Applicable Fluids
      1.2.2 Types of Meters
      1.2.3 Uncertainty of Measurement
1.3 Method of Calculation
1.4 Symbols
1.5 Definitions
      1.5.1 Primary Element
      1.5.2 Pressure Measurement
      1.5.3 Temperature Measurement
      1.5.4 Flow Rate Determination
      1.5.5 Fluid Physical Properties
      1.5.6 Base Conditions
      1.5.7 Sensitivity Coefficient
      1.5.8 Meter Factor
1.6 Orifice Flow Equation
      1.6.1 Velocity of Approach Factor
      1.6.2 Orifice Plate Bore Diameter
      1.6.3 Meter Tube Internal Diameter
1.7 Empirical Coefficient of Discharge
      1.7.1 Regression Date Base
      1.7.2 Empirical Coefficient of Discharge
             Equation for Flange-Tapped Orifice Meters
      1.7.3 Reynolds Number
      1.7.4 Flow Conditions
      1.7.5 Pulsating Flow
1.8 Empirical Expansion Factor for Flange-Tapped
      Orifice Meters
      1.8.1 Upstream Expansion Factor
      1.8.2 Downstream Expansion Factor
1.9 In-Suite Calibration
      1.9.1 General
      1.9.2 Meter Correction Factor
1.10 Fluid Physical Properties
      1.10.1 Viscosity
      1.10.2 Density
      1.10.3 Isentropic Exponent
1.11 Unit Conversion Factors
      1.11.1 Orifice Flow Equation
      1.11.2 Reynolds Number Equation
      1.11.3 Expansion Factor Equation
      1.11.4 Flow Rate per Unit of Time Conversion
1.12 Practical Uncertainty Guidelines
      1.12.1 General
      1.12.2 Uncertainty Over a Flow Range
      1.12.3 Uncertainty of Flow Rate
      1.12.4 Typical Uncertainties
      1.12.5 Example Uncertainty Calculations
APPENDIX 1-A - REFERENCES
APPENDIX 1-B - DISCHARGE COEFFICIENTS FOR FLANGE-TAPPED
               ORIFICE METERS
APPENDIX 1-C - ADJUSTMENTS FOR INSTRUMENT CALIBRATION
               AND USE

Provides the basic equations and uncertainty statements for computing the flow through orifice meters.