AFT Impulse does not include the Chempak Fluid Library by default. Chempak Data is a separate product that must be downloaded and installed as an addition to AFT Impulse to access the Chempak Fluid Library in the software.

Chempak File Location

The Chempak Data is installed in C:\AFT Products\Chempak Data\ by default. If both AFT Impulse and Chempak Data are installed to their default locations, no further configuration is necessary. However, if AFT Impulse or the Chempak Data are not installed in a default location, AFT Impulse will need to know where to look for the Chempak Data. This is specified in the control.aft file, located in the same folder as the Impulse.exe. If the files cannot be found the following message is displayed:

Control.aft can be edited with a text editor, and by default looks like:

If the Chempak Data was installed to a location other than the default, the line "ChempakDataPath = " will need to be edited to include the directory it was installed to. For example: "ChempakDataPath = C:\My AFT Files\Chempak Data"

Upgrading Chempak Data Version

When upgrading to a new version of AFT Impulse, you may receive a message that Chempak is out of date.

To fix this issue, download the newest version of the Chempak Data from the AFT website. Be sure to install to the same location as the existing Chempak Data, and double check the control.aft file if necessary.