Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Measuring Devices (hierarchy name)
5. measuring devices (instruments)
6. [measuring devices for extent]
7. sensors

Anotations

Scope note:

A ‘sensing system’ comprised of three parts: a sampling system, an array of chemical gas sensors producing an array of signals when confronted with a gas, vapor, or odor, and an appropriate pattern-classification system.