SPC Charts - Variance Chart Control Limits
Use this tab to define the following parameters:
Element Name | Description |
---|---|
Variance Control Limits | Use this dropdown list to select the
Variance control limits type:
|
Check Variance Control Limits | Select this checkbox to check for control limit violation on the Variancechart and raise an alarm. |
Calculate if defined variance limits are blank | Select this checkbox to calculate the Variance chart control limit, if you have selected to Use defined UCL and LCL option the Variance Control Limits dropdown list above, and that variable has blank or invalid values. |
Calculate if defined variance limits are blank | Select this checkbox to calculate the Variance chart control limit, if you have selected to Use defined UCL and LCL option the Variance Control Limits dropdown list above, and that variable has blank or invalid values. |
Process Sigma Multiplier for variance chart | Use this miniscroll to select a user defined process sigma multiplier for calculating the control limits on the Variance chart. |
Variance Control Limit label name | This text box allows you to choose the
Control limit label type on the
Variance chart from the following:
|
Upper Variance Control Limit label name | In this text box, enter a label for the Upper Control limit when Text only or Text and number options are selected. |
Lower Variance Control Limit label name | In this text box, enter a label for the Lower Control limit when Text only or Text and number options are selected. |
Variance Control Limit violation name | In this text box, enter the Variance Control Limit Violation name to be used in the generated alarms spreadsheet and on the Variance chart legend. |