API MPMS CH5.7 : 2003

1 Introduction
  1.1 Scope
  1.2 Differential Pressure or Head-Type Flow Meters
2 Terminology And Definitions
  2.1 Meter
  2.2 Primary Element or Differential Producer
  2.3 Differential Producer Holder
  2.4 Meter Tube
  2.5 Meter Tube Internal Diameter, D, D[i], D[m],
       or D[r]
  2.6 Secondary Devices
  2.7 Roughness Average, R[a]
  2.8 Discharge Coefficient, C[d]
  2.9 Expansibility Factor, [epsilon] or Y
  2.10 Flow Conditioner
  2.11 Reynolds Number, Re
  2.12 Swirl
3 Required Tests
  3.1 Standard And Non-Standard Tests
  3.2 Liquid Flow Tests
  3.3 Gas Flow Tests
  3.4 General Guidelines For Both Liquid And Gas
       Flowrate Tests
  3.5 Acoustic Noise Test
  3.6 Laminar Flow Meter Tests
4 Installation And Test Facility Requirements
  4.1 Acceptable Test Facilities
  4.2 Acceptable Test Fluids
  4.3 Required Meter Dimensions
  4.4 Required Piping Considerations Upstream of The
       Meter
  4.5 Installation Requirements Specific For The Meter
       Being Tested
  4.6 Effect of Flow Conditioners
  4.7 Meter And Secondary Instrument Orientation
5 Flow Rate Equation
6 Procedure For Reporting Meter Performance Results
  6.1 Required Tables, Graphs, And Other Information
  6.2 Uncertainty Calculations
  6.3 Sample Reporting Form
Appendix A - Test Matrix
Figures

Defines the testing and reporting protocols for flow measurement devices based on the detection of a pressure differential that is created by the device in a flowing stream.