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AGA REPORT 7 : 1996

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

MEASUREMENT OF GAS BY TURBINE METERS

Available format(s)

Hardcopy , PDF

Superseded date

23-07-2013

Superseded by

AGA XQ0585 : 1996

Language(s)

English

Published date

12-01-2013

0 Introduction
1 Scope
2 Construction
    2.1 General
    2.2 Body
    2.3 Measuring Mechanism
    2.4 Output Device
3 Installation
    3.1 General
    3.2 Installation Configurations
          3.2.1 Recommended Installation for In-Line
                 Meters
          3.2.2 Optional Installation Configurations
                 for In-Line Meters
                 3.2.2.1 Short-Coupled Installations
                 3.2.2.2 Close-Coupled Installations
          3.2.3 Recommended Installation for Angle Body
                 Meters
    3.3 Straightening Vanes
    3.4 Strainers or Filters
    3.5 Over-Range Protection
    3.6 By-pass
    3.7 Additional Installation Requirements
    3.8 Accessory Installation
          3.8.1 Temperature Measurement
          3.8.2 Pressure Measurement
          3.8.3 Density Measurement
          3.8.4 Accessory Devices
4 Operation
    4.1 General
    4.2 Initial Startup
    4.3 Maintenance and Inspection Frequency
5 Performance Characteristics
    5.1 Swirl Effect
    5.2 Velocity Profile Effect
    5.3 Fluid Drag Effect
    5.4 Non-Fluid Drag Effect
    5.5 Repeatability
    5.6 Meter Error, Uncertainty and Accuracy
    5.7 Turbine Meter Performance Curves
          5.7.5 Actual Flow Rate
          5.7.6 Base Flow Rate
    5.8 Linearity
    5.9 Pressure Loss
    5.10 Maximum Flow Rate
    5.11 Minimum Flow Rate and Rangeability
    5.12 Pulsation Effects
          5.12.1 Flow Velocity Pulsations
          5.12.2 Pulsation Index
6 Volumetric Flow Measurement
    6.1 Equations for Calculating Volumetric Flow
          6.1.2 Flow Rate at Flowing Conditions
          6.1.3 Flow Rate at Base Conditions
          6.1.4 Pressure Multiplier
          6.1.5 Temperature Multiplier
          6.1.6 Flowing Temperature Multiplier
          6.1.7 Multiplier
          6.1.8 Compressibility Multiplier
7 Mass Flow Measurement
    7.1 Equation for Calculating Mass Flow
8 Calibration
    8.1 General
    8.2 Determination of Calibration Factor
    8.3 Presentation of Calibration Data
    8.4 Calibration Methods
          8.4.1 General
          8.4.2 Bell Prover
          8.4.3 Weigh Tank Prover
          8.4.4 Transfer Prover
          8.4.5 Critical Flow Orifice Prover and Sonic
                 Nozzle Prover
          8.4.6 In line Orifice Meters
          8.4.7 Module Interchange
9 Field Checks
    9.1 General
    9.2 Visual Inspection
    9.3 Spin Time Test
References
                 

Contains additional information on the theory of operation, performance characteristics, installation, and maintenance of turbine meters; includes techniques for flow computation, discussions on density and rangeability, and provides a section on calibration testing.

DocumentType
Standard
Pages
0
PublisherName
American Gas Association
Status
Superseded
SupersededBy

API TR 2571 : 2011 FUEL GAS MEASUREMENT
ASTM D 5287 : 2008 Standard Practice for Automatic Sampling of Gaseous Fuels
ASTM D 5287 : 2008 : R2015 Standard Practice for Automatic Sampling of Gaseous Fuels (Withdrawn 2024)
API 551 : 2016 PROCESS MEASUREMENT
UNI/TS 11291-3 : 2014 GAS MEASUREMENT SYSTEMS - HOURLY BASED GAS METERING SYSTEMS - PART 3: CTR PROTOCOL

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