8-14 Automating Measurements
Saving Measurement Results
Statistical Process Control
Statistical Process Control
If you collect data on your production process, you can use statistics to
control and improve your process. Tools such as histograms, Pareto
diagrams, and scatter plots can help you to quantify your process'
behavior, and identify trends, cycles, and other “unnatural” patterns.
You can purchase computer programs such as SAS and SPlus to perform
statistical analyses. HP VEE, which you can use to control your analyzer,
also offers some statistical capability. You can also use add-in macros for
popular spreadsheet programs.
For example, you can use Microsoft Excel from the Office97 suite to
import *.prn (Lotus 1-2-3 format files) directly from the analyzer into an
Excel spreadsheet. You can then use the charting features to plot
statistical results.
For computers connected to a LAN, the *.prn files can be imported over
the LAN directly from the analyzer’s internal dynamic data disk. SeeThe
LAN Interface User’s Guide Supplement for information on accessing the
analyzer’s dynamic data disk.
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