An environmental monitoring and controlling system for a ventilated cage and rack system that monitors and measures air flow in the rack at either the rack or cage level. At the rack level, two pressure sensors are provided in a supply air system to accurately monitor the air flow rate into the rack....http://www.google.es/patents/US6853946?utm_source=gb-gplus-sharePatente US6853946 - Air flow sensing and control for animal confinement system
Air flow sensing and control for animal confinement system
