Sampling data for chart

Dashboard
1

I am capturing output from an MVHR unit, taking readings every 1s (for control purposes). I want to chart this over 24 hours, but need a lot less data points. Is there a node or flow in existence that will let me sample the data every 15 minutes? How else might I solve this?

2

It depends what you mean by sample. Take a look at:

the delay node that can rate limit
the rbe node that "reports by exception"
the smooth node...

3

Thank you - a combination of smooth and delay did the trick.