DataApex

- NGA - Natural Gas Analysis Extension

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NGA Extension is a software module for Natural Gas and Liquefied Petroleum Gas Data Processing. You no longer neeed an external tool for gas properties calculations since the Clarity contains the complete workflow of data acquisition, peak calibration, gas properties calculations based on supported norms and reporting. It is possible to perform summary calculations of gas properties from multiple signals and chromatograms.

Natural Gas
  • ISO 6976-95 Natural gas - Calculation of calorific values, density, relative density and Wobbe index from composition.
  • ASTM D 3588-98 Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels.
  • GPA 2172-09 Calculation of Gross Heating Value, Relative Density and Compressibility Factor for Natural Gas Mixtures From Compositional Analysis.

Liquefied Petroleum Gas

  • ASTM D 2421-02 Standard Practice for Interconversion of Analysis of C5 and Lighter Hydrocarbons to Gas-Volume, Liquid-Volume, or Weight Basis.
  • ASTM D 2598-02 Standard Practice for Calculation of Certain Physical Properties of Liquefied Petroleum (LP) Gases from Compositional Analysis.
  • ISO 8973-97 / EN589-04 Liquefied petroleum gases - Calculation method for density and vapor pressure

ISO 6976-95
  • Compression Factor (for real gas only)
  • Mean Molecular Weight
  • Relative Density
  • Density
  • Superior Calorific Value
  • Inferior Calorific Value
  • Wobbe Index

ASTM D 3588-98 and GPA 2172-09

  • Molar Mass
  • Molar Mass Ratio
  • Compressibility Factor
  • Relative Density
  • Ideal Heating Value (incl.calculations in BTU - British Thermal Units)
  • Real Heating Value (incl.calculations in BTU - British Thermal Units)

ASTM ASTM D 2421-02 and D 2598-02

  • Vapor Pressure
  • Relative Density
  • Motor Octane Number

ISO 8973-97 / EN589-04

  • Absolute Vapour Pressure (for Molar and Mass Percent only)
  • Gauge Vapour Pressure (for Molar and Mass Percent only)
  • Octane Number

In the Calibration window you can add new compounds using the drop-down list which includes compound names available in the supported norms.

Changes in the NGA Settings, such as selection of norm and its properties dynamically afect the gas properties calculations.

NGA Extension enables you to performs gas properties calculations from multiple chromatograms.

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