This dialog appears when you click on the New (
) button from the Stock Mixture Registration Dialog or the Stock Mixtures Databank Dialog. It allows you introduce a new stock mixture to your process file or the ‘SuperPro (User)’ database.
You must fill-in the top three fields of this dialog (i.e., they cannot be left blank). The ‘Name’, and ‘Local Name’ must be unique amongst stock mixtures and pure components. Uniqueness is only enforced amongst the pool of registered mixtures (if you are introducing this mixture to a process file) or amongst the pool of databank mixtures (if you are introducing this mixture into your mixture databank). However, it is strongly recommended as good practice to make sure that you specify names that are unique across both pools
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When this dialog appears, the editing focus is automatically set to the first field (‘Name’). As soon as you start typing the new mixture’s name, notice how the characters are automatically echoed in the other name fields (‘Trade Name’ , ‘Local Name’ and ‘Company ID’). Accepting the suggestions offered by the program may be common in cases where a new mixture is introduced in a process file only and will never be deposited in the ‘SuperPro (User)’ database. If you wish to provide your own (more appropriate) values, simply visit the corresponding fields and overwrite. You will probably have to do it if you introducing this mixture for your stock mixture databank directly, or if you plan on eventually depositing this mixture in your mixture databank. |
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The bottom half of the dialog deals with the initialization of the new mixture’s property values. If you select the ‘Initialize to Zero’ option, then all mixture properties are initialized to zero. You should exercise extreme caution when you select this option, since a zero property value, when used in a model can cause the calculations to blow up. The system will not accept zero values for properties that cannot be zero (e.g. density) and will force you to change them.
If you select the ‘Copy from Another Mixture’ option, then you can choose a source mixture as a reference for copying the property values. For instance, if your new mixture is similar to ‘NaCl (1M)’, you may want to use the current mixture ‘NaCl (1M)’ as a source, and later visit the component properties screen to make adjustments. You can pick a reference mixture from the set of mixtures currently in your process file (registered mixtures) or currently in the stock mixture databank file.
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A mixture may exist both in the stock mixture databank as well as in the current process file. Furthermore, the two instances of the mixture could have different property values. If that is the case, depending upon the chosen source in the above dialog (database vs. process file), the property values supplied for initialization of the new stock mixture could be different. |
