Excel versions 2003 and below:
Choose Add-in from the Tools Menu:
Browse your computer and select the file FluidProp.xla in the FluidProp folder:
Now a FluidProp category appears every time you use the Excel Function Wizard:
Excel versions 2007 and up:
Choose Options from the File menu/office-button:
Go to the Add-Ins tab and from the Manage drop-down box select Excel Add-ins and press Go...:
Browse your computer and select the file FluidProp.xla in the FluidProp folder:
Now a FluidProp category appears every time you use the Excel Function Wizard: