Method of detection of flow duct obstruction

Details Method of detection of flow duct obstruction Method of detection of flow duct obstruction

G - Physics

01

V

G01V 9/00 (2006.01) F01N 13/00 (2010.01) F01N 13/18 (2010.01)

Patent

CA 2378791

A method for detecting an obstruction in a flow duct is provided. The method includes the steps of directing gas through at least one port of the flow duct, measuring a flow noise level of the gas directed through the at least one port, and comparing the noise level with a predetermined noise level. In the event that the flow noise level exceeds the predetermined noise level by at least a threshold amount, then the method includes the step of indicating the presence of an obstruction in the at least one port.

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