Assertion: hood's fan | /r/CapableOf | create an air-curtain barrier
Facets:
value: in the operator's breathing zone
type: LOCATION
Source sentences:
text: Low-flow/high performance CAV hoods generally have one or more of the following features: sash stops or horizontal-sliding sashes to limit the openings; sash position and airflow sensors that can control mechanical baffles; small fans to create an air-curtain barrier in the operator's breathing zone; refined aerodynamic designs and variable dual-baffle systems to maintain laminar (undisturbed, nonturbulent) flow through the hood.