An air flow monitoring and control system with reduced false alarms includes an alarm sensor for monitoring air flow in a fume hood or the like, set to provide a warning if air flow drops below a predetermined amount. A local controller monitors the alarm, and disables it when the hood is set to reduced air flow, whether by a local timer or by command of a central control system. Optionally, the controller itself can operate a variable speed drive to reduce air flow on a timed basis, and the controller can communicate with facility management through a dialer or the Internet, or can interface with a central control for the facility through a facility bus.

REFERENCE TO RELATED APPLICATIONS

This application claims an invention which was disclosed in Provisional Application No. 60/495,226, filed Aug. 14, 2003, entitled "AIR FLOW MONITORING AND CONTROL SYSTEM WITH REDUCED FALSE ALARMS". The benefit under 35 USC §119 (e) of the U.S. provisional application is hereby claimed, and the aforementioned application is hereby incorporated herein by reference in its entirety.

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