What is Historian?
Time-series database that stores sensor and operations data from plants and grids.

PI-4412 · spike before the trip
A plant historian stores…
Write it in your own words in the app.
In real work
Historian tag PI-4412 spiked before the trip. Pull one-hour trends for root cause.
In the illustration
The carousel spins to the spool tagged PI-4412, rewinds one hour, and the tape unrolls to show the spike just before the trip.
Query the historian in your operations platform for the pump's bearing temperature over 90 days and mark the first day it drifted outside its normal band.
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