guide Creating Changing Limits

[Lindsey.Wilcox]

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