Good news for all users of Oilcalcs for iPhone: a new version (1.0.8) is planned for publication within the next few weeks!
The new version of Oilcalcs will contain the following additions and improvements:
1. Expanded conversions page, with conversion of:
– density @ 15°C to API @ 60°F / density @ 20°C / relative density @ 60/60°F
– API @ 60°F to density @ 15°C / density @ 20 °C / relative density @ 60/60°F
– relative density @ 60/60°F to API @ 60°F / density @ 15°C / density @ 20°C
– density @ 20°C to API @ 60°F / density @ 15°C / relative density @ 60/60°F
New convert screen
2. Added ASTM tables 2004 (including amendment 2007) as per API MPMS Ch. 11.1. It is worth noting here that correction factors for temperature and pressure are rounded to 5 decimals by default in the app, when the setting “ASTM tables 2004” is selected. Although API MPMS Ch. 12 mentions a rounding to 4 decimals for values below the standard temperatures, and a rounding of 5 decimals above the standard temperatures, it also mentions that in case of disputes, the computer generated CTL shall take preference. Therefore, when selecting “ASTM tables 2004” the default is 5 decimals. It is then up to the user to reduce this to 4 decimals in case of values below the standard temperatures (i.e. 15°C and 60°F).
3. Added the option to calculate using either ASTM 1980 tables or ASTM 2004 tables:
ASTM 2004/2007 tables
ASTM 1980 tables
Rounding of VCF (CTL) is automatically adjusted in accordance with 1980 / 2004 tables. (Bearing in mind the remark under item 2)
4. Added lubricating oil calculations to the ASTM 1980 tables (Imperial units)
5. Fixed the auto format algorithms in all screens for entering densities. Now densities can be entered as any of the following:
– eg. 0.9612 or 961.2 or 9612. The correct format is automatically recognized by the algorithm and the output is adjusted accordingly.
6. Added the option to enter pressure for Products, Crude Oil and Lubricating Oils in the calculator screen, in accordance with the implementation of API MPMS Ch 11.1. Pressure can be entered in Bar, kPa. For LPG / NGL the pressure is fixed and assumed to be the saturation pressure.
Input of pressure added
7. The full range of the following tables is now accessible from the “Convert” screen:
– table 5 A/B/D: Correction of observed API to API @ 60°F
– table 6 A/B/D: Volume correction factors for API @ 60°F
– table 23 A/B/D: Correction of observed relative density to relative density @ 60°F
– table 24 A/B/D: Volume correction factors for relative density @ 60°F
– table 53 A/B/D: Correction of observed density to density @ 15°C
– table 54 A/B/D: Volume correction factors for density @ 15°C
– table 59 A/B/D: Correction of observed density to density @ 20°C
– table 60 A/B/D: Volume correction factors for density @ 20°C
New convert screen – all tables
Quick link screen for tables
8. Bug fixes to the blending tools, and the added option to calculate blends in either Imperial or Metric units, depending on the setting of the “Metric” / “Imperial” switch in the settings screen.
9. Bug fixes in the LPG liquid and vapor calculation screens.
LPG / NGL Vapor calculation
LPG / NGL liquid calculation
10. Improvements in the LPG / NGL conversions screen, including automatic format recognition for densities.
LPG /NGL conversions – table 23E
LPG / NGL Conversion – table 53E/59E
11. Improvements and bugfixes in the LPG density calculation screen.
LPG density calculator
Constituent selector
Once enhanced bug testing is completed the updated app will be submitted to Apple for approval, and as soon as the app is approved, the new version will be available, probably around 10th December.
In the mean time, the current version of Oilcalcs for the iPhone (version 1.0.7) can be downloaded in the Appstore:
Mooring Marine Consultancy 