In a technical context, instrumentation is a collection of measuring instruments used for indicating, measuring, and recording physical quantities.
The "senses" of the system that detect changes in physical properties (e.g., thermocouples for heat).
Most industrial processes focus on four primary variables: pressure , temperature , flow , and level .
The use of specialized tools to measure biological signals, such as heart rate or blood glucose levels.
In music, instrumentation refers to the of a piece for specific instruments.
While often used interchangeably, "instrumentation" is the broader term. It refers to the art of combining any set of instruments—from a jazz band or rock ensemble to a chamber group—whereas "orchestration" specifically focuses on the symphony orchestra.