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  • Seeq Team

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:

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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.

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3. Do the same workflow to calculate the Lower Boundary during these 4 hour periods, with a multiplier of -2.

image.png

4. Customize your boundaries based on preference using the Style option under Customize.

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5. Identify excursions using Value Search:

image.png

Content Verified DEC2023

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