EcoStruxure™ Control Expert - Flow Calculation Library

AGA Standard Gas Flow Calculation Library
Published by Schneider Electric

Features

  • Library Content
  • AGA#3 Orifice Meter Gas Calculation Function
  • AGA #7 Turbine Meter Gas Volume Calculation
  • AGA #8  Gas Compressibility Factor Calculation Function
  • TOTALS EFB for Totalization of Instantaneous Flow Values

Library Content

EcoStruxure Control Expert - Flow Control Library consist of Function blocks for below 3 family
  • AGA
  • API
  • Flow Calculation Extensions
  • Library Content
    AGA Family Block List
    • AGA3: Orifice Meter Gas Calculation
    • AGA5: Calculation of Gross Heating Value, Relative Density and Compressibility Factor for Natural Gas Mixtures
    • AGA7: Turbine Meter Gas Calculation
    • AGA8: Compressibility Factor Calculation of Natural Gas and Related Hydrocarbon Gases
    • AGA9: Ultrasonic Meter Gas Calculation
    • AGA11: Coriolis Meter Gas Calculation
    • VCONE: V-Cone Meter Gas Volumes
    API Family Block List
    • API_C11_1: Calculations for Generalized Crude Oils, Refined Products, and Lubricating Oils
    • API_C11_2: Calculations for NGL and LPG
    • API2540CTL: Calculations Temperature Correction Factor for Liquids
    • API2540CPL: Calculations Pressure Correction Factor for Liquids
    Flow Calculation Extensions Family Block List
    • TOTALS: Accumulation of Instantanious Flow Rate Input
    • TOTALS_UDA: Accumulation of Instantanious Flow Rate
    • MULTIPLIER: Converter for Meter Input

    AGA#3 Orifice Meter Gas Calculation Function

    The Orifice Meter Gas Calculation Function object
  • Uses the AGA Report #3 1995 standard
  • This function calculates gas volumes using an orifice plate along with input meters for temperature, pressure and differential pressure
  • AGA#3 Orifice Meter Gas Calculation Function

    AGA #7 Turbine Meter Gas Volume Calculation

    This function is used to calculate Turbine Meter Gas Volumes for Pulse, Frequency and Analog Inputs using the AGA Report #7 2002 standard.
    AGA #7 Turbine Meter Gas Volume Calculation

    AGA #8  Gas Compressibility Factor Calculation Function

    AGA #8:  Calculates the Compressibility Factor of Natural Gas and Related Hydrocarbon Gases - 1994 Detailed Method


    The compressibility factors are ZFLOW, ZBASE, DFLOW, and DBASE and are calculated based on the "Gas Analysis" data entered into the "ANALYSIS" input data structure of the AGA8 EFB


    The AGA8 EFB provides data to AGA3 EFB in order to adjust the AGA3 calculation to account for compressibility of the gas being measured
    AGA #8  Gas Compressibility Factor Calculation Function

    TOTALS EFB for Totalization of Instantaneous Flow Values

    Function block is used to totalize or accumulate the instantaneous flowing volume provided by AGA3 and AGA7. This can be used to totalize other process values as well, i.e. not limited to use with AGA3 and AGA7. The input value can be in units/hour or units/day and the value will be totalized over time


    There are various types of outputs, these are:

  • running total
  • running total (with reset)
  • current day volume
  • previous day volume
  • TOTALS EFB for Totalization of Instantaneous Flow Values
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