Historians and Condition Data

What this topic covers

How time-series storage supports trends, event review and correlation with process conditions.

Core ideas

Historians preserve measurements with timestamps so equipment behaviour can be reconstructed.

Tags should be tied to stable asset identities and engineering units.

Retention and compression settings should preserve the detail needed for the intended analysis.

Program tradeoffs

Data must retain asset identity, timestamp, units and operating context to support reliable trend analysis.

What good evidence looks like

Anomalies and model predictions are decision support, not automatic proof of failure.

Lifecycle perspective

OT security should protect monitoring availability and integrity without interfering with safe operation.