SPCView Statistical Process Control Analysis Software Features

Products Software Statistical Process Control Program Features

SPCView Statistical Process Control Software from Integrated Sciences Group SPCView 1.7 Program Features

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SPCView ($350 USD) is a statistical process control "plug-in" module for UncertaintyAnalyzer. Control point values and uncertainties are developed in UncertaintyAnalyzer and inserted into a process control history by opening SPCView and clicking a button. SPCView features weighted and un-weighted least squares trend analysis, statistical tests of control points and processes, evaluation of measurement processes, tracking of standards and other attributes, adjustment of instrument parameter calibration intervals to meet user-defined in-tolerance confidence levels, and monitoring/control of output processes.

Traditional process control methods focus primarily on controlling two types of data: 1) data from pass/fail test results and 2) data from measured values. The first type of data is controlled through the use of something called a "p-chart." For the most part, SPCView is not intended as a tool for developing p-charts. Instead, SPCView focuses on controlling processes involving measured values.

Software details are listed below. Print quality product brochure and program features files are available in Adobe Acrobat pdf format via the hyperlinks below. To view these documents, you will need Acrobat reader 6.0 or higher. Click Acrobat Reader to download a free copy. To download the product files directly to your computer, right-click the appropriate link and select Save Target As.

Key Features Product Brochure

Details and Screen Shot Links

A Multifaceted SPC Analysis Tool

Import UncertaintyAnalyzer results into a process control timeline.
Develop process control limits.
View process histories in control charts.
Model and project drift by linear regression.
Evaluate outliers.
Evaluate quality control using process metrics.
Detect out of control events.
Test control points and diagnose problems.
Project bias drift and uncertainty growth
Compute calibration intervals for equipment parameters.
Issue reports complete with control charts and trend analysis.
Copy charts and data spreadsheet, word processing and other applications.

Process Control Histories

The main functions and features of SPCView are accessed from the Process Control Data Screen.
Data can be entered manually, paste or import into the process control history table for analysis. The Run External Application screen can be used to access data in spreadsheets or other external applications.
There are four process control options to choose from:
1. Measurement Process Control
2. Parameter Value Tracking
3. Parameter Interval Analysis
4. Sampled Process Control
The contents of the history table, as well as other key information, can be saved in an SPCView analysis file (*.spc).

Process Control Limits

Control limits are defined on the Process Data Control Screen.
Control limits (or offsets) can be entered as two-sided asymmetric, two-sided symmetric, single-sided upper, or single-sided lower values.
Control limits can be entered directly or can be computed statistically.

Control Charts

The Process Control Chart Screen displays a plot of each control point in the process history with optional one-sigma upper and lower uncertainty limits.
Upper and lower control limits (UCL and LCL) are also displayed.

Trend Analysis

A weighted or unweighted linear regression fit of the control points can displayed on the Process Control Chart Screen, along with bounding upper and lower standard uncertainty curves.
The projected time for intercept with the UCL or the LCL are displayed on the control chart screen.
The times at which the upper and lower uncertainty curves will intersect the control limits are also displayed.

Interval Analysis

The SPC Interval Worksheet can be used to compute a recommended test or calibration interval commensurate with a desired confidence level or reliability target.
The SPC Interval Worksheet also shows the drift rate for the process, project intercept of the curve fit, and the intercepts of the upper and lower projection limits with the UCL and LCL.

Outlier Identification

The Reject Confidence Worksheet is used to review the confidence for rejecting a process as being out-of-control at a selected point.
Suspect control points can be excluded from the SPC trend analysis without deleting them from the process history.
The drill-down Resubmission Time Analysis Worksheet can be used to exclude suspect as-found and/or as-left data from Interval Analysis.

Analysis Reports

Hardcopy reports of the SPC analysis results and of the control chart can be generated via the SPC Report Options Screen.
Reports showing in- or out-of-tolerance status of points, along with rejection confidences and computed beta risks, can be printed from the Reject Confidence Worksheet.
Interval Analysis Reports can be printed from the SPC Interval Worksheet.

Integrated Sciences Group
14608 Casitas Canyon Road � Bakersfield, CA 93306
Phone 1-661-872-1683 � FAX 1-661-872-3669