Purpose
The primary purpose of the program is to implement the ISO 6976 calculations as given in the standard. The methods given have been extended to permit the composition not only in molar terms but mass and volume terms as well, although these are not defined in the standard.
The program suite also optionally calculates the UK gas interchangability indices as defined in the HSE Gas Safety (Management) Regulations.
Utilities
Various utility programs are included in the package. These are:
- Maintain the component data base
- Calculation of pseudo components
- Gas blending and ballasting
Notes
- The program has been written to make full use of the list processing capabilities of the HP49/50g series calculators. This means that the methods are not exacly those given in the standard but give identical reults.
- Once set up, the user can reuse the component slate. Most companies use their own pseudo components and component slate. This needs only to be done once.
- Component slates and compositions can be saved for later use.
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