Air flow monitoring and control system with reduced false alarms
AssigneeCornell Research Foundation, Inc.
InventorWilliam A. Shaben
Life of this patent
Estimating the term…
Abstract
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.
Claims20
An air flow monitoring and control system with reduced false alarms, comprising:
- a) alarm sensor means for monitoring air flow in a fume hood or the like, set to provide a warning if said air flow drops below a predetermined amount;
- and
- b) local controller means for monitoring said alarm, wherein said controller means disables said alarm, when said fume hood or the like receives reduced air flow, whether by a local timer or by command of a central control system.
Dependencies are inferred from the claim text.