Today another update for Oil Calculator Pro (version 1.0.9) was released and is now available for download at Google Play:
After the release of version 1.0.8 we discovered some bugs during one of our bug testing sessions:
1: In the tables for LPG/NGL some combinations of temperature and density failed to achieve the correct CTL or reduced density. This has now been fixed with a slight amendment in rounding off rules inside the algorithms.
2: Rounding off in calculations for Metric tons in air / vacuum caused minor differences in the three decimals compared with other programs. This was also a rounding issue and has been resolved.
3: The viscosity/temperature conversion unit, which was added to the app in version 1.0.8 has now been expanded with a tool that utilizes the Walther equation and two sets of temperature and viscosity data. This is considerably more accurate than calculating an alternate viscosity or temperature based on one temperature/viscosity data pair only.
The viscosity / temperature tab now looks as can be seen in the following screenshot:
Visco / temp converter top part
Visco / temp converter using Walther equation
Visco / temp converter using Walther equation and deg Fahrenheit
The user must enter two temperatures and two viscosities, with the lower temperature and its corresponding viscosity first, followed by the second pair. After that, upon entering either an alternative temperature or an alternative viscosity in the appropriate fields, the resulting temperature or viscosity is displayed.
Temperature unit is automatically selected corresponding to the SI Metric / Imperial setting in the settings screen. Toggle buttons are provided to override the default setting and switch between deg Celsius and Fahrenheit any time. The temperatures are automatically converted when changing between Celsius and Fahrenheit.
The instruction manual will be updated shortly and the updated version should be available in this website within the next few days.
If you are interested in Oil Calculator Pro, it can be downloaded from Google Play here.