Patent ID: 6463397
Filing Date: 2002-10-08
Classification: A01K,G01F

Abstract:
A system for monitoring and controlling the environment in a rack having a plurality of cages for housing a plurality of laboratory animals, the rack receiving an input air flow through an input conduit, and exhausting an air flow output from an output conduit, said system comprising:a supply air system coupled to the input conduit for supplying the input air flow to the rack in an input air flow direction, said supply air system comprising: a pressure differentiator for determining a pressure difference in the input air flow taken at two locations along the input air flow direction, and for providing an indication of said determined pressure difference; a fan system for generating the input air flow; and a microcontroller for receiving said indication of said determined pressure difference from said pressure differentiator and for controlling the operation of said fan system based on said determined pressure difference so as to maintain a desired rate of input air flow to the rack.