The Mathcad provides a built-in facility of operation with dimensional values. This allows more powerful operations with dimensional quantities.
The "WaterSteamPro" package is possible to be operated in Mathcad under the following conditions:
The first mode is enabled at a Mathcad startup (the library WSUMCAD.DLL should be kept in the folder USEREFI and it should be already loaded). In this case the user should monitor dimensions of function arguments of the "WaterSteamPro" package to belong to the US-system.
To operate the program under the second mode (dimensional mode) the file named "WATERSTEAMPROUS.MCD" should be inserted into a worksheet through the item "Reference…" of the "Insert" menu. This file redefines functions permitting them to operate with dimensions.
Fig. 8 illustrates the difference between the foregoing modes.
Fig. 8. WaterSteamPro modes in Mathcad
The second mode is recommended. All Mathcad examples of the "WaterSteamPro" delivery set operate with dimensions.
Attention: it is best to insert (Reference) no more than one copy of the file "watersteamprous.mcd" into a worksheet. Otherwise dimension problems will occur - the program will operate with dimensions to the power equal to a number of insertions.