Measuring device for hot film air mass measures an air mass flow in a main direction of flow, especially in an intake section of an internal combustion engine

摘要

A sensor chip (130) has a measuring surface (132), over which a mass of air flows (148) in parallel. This measuring surface has a heating element and two measurement resistors, all as parallel strip conductors extending vertically to a main direction of flow. The measuring surface has a front limiting line upstream in the stream of air mass.