Speed of laboratory fume hood sash opening monitor and indicator

Details Speed of laboratory fume hood sash opening monitor and indicator Speed of laboratory fume hood sash opening monitor and indicator

1996-08-12

1998-03-31

Joyce, Harold

Ventilation

Workstation ventilator

Covered workbench chamber

454 61, B08B 1502

Patent

active

057331880

ABSTRACT:
Apparatus for monitoring the speed of movement of at least one sash door of a laboratory fume hood is disclosed. The speed of movement of a sash door is detected and an alarm signal is generated if the speed of movement exceeds a predetermined value while increasing the size of the uncovered opening of the fume hood.

REFERENCES:
patent: 4706553 (1987-11-01), Sharp et al.
patent: 4934256 (1990-06-01), Moss et al.
patent: 5215497 (1993-06-01), Drees

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