Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Mark Hornung1
Felix Mayer1
Marc von Waldkirch1
Marcel Plüss1
Date of Patent
January 12, 2010
Patent Application Number
12009679
Date Filed
January 21, 2008
Patent Primary Examiner
Patent abstract
A thermal flow sensor is equipped with a self-test unit that monitors the device and generates a fault signal in the presence of a malfunction. The self-test unit can e.g. monitor the integrity of a membrane carrying the heater and temperature sensors, or it can monitor various operational parameters of the device, thereby increasing the safety of the device.
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