Seeq Team Lindsey.Wilcox Posted March 4, 2019 Seeq Team Share Posted March 4, 2019 Here is a workflow to create limits for a signal that are calculated based on the standard deviation of 4 hours periods of operation; i.e. a changing 4 hour boundary. 1. Create a periodic condition for the time period that you would like to use for this window. Here I created 4 hour periods: 2. Next, use Signal from Condition to calculate the upper boundary of the signal during each of these 4 hours periods. Use a multiplier of +2. 3. Do the same workflow to calculate the Lower Boundary during these 4 hour periods, with a multiplier of -2. 4. Customize your boundaries based on preference using the Style option under Customize. 5. Identify excursions using Value Search: Content Verified DEC2023 Link to comment Share on other sites More sharing options...
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