Sensor Arrangement For Determining At Least One Flow Characteristic Of Fluid Medium Which Flows In Main Flow Direction

The invention provides a sensor arrangement for determining at least one flow characteristic of a fluid medium which flows in a main flow direction, particularly a suction air quality of an internal combustion engine, wherein the sensor arrangement is provided with one insertion type sensor that is arranged in a flow guiding pipe. The insertion type sensor is provided with a sensor for determining the flow characteristic of the fluid medium and at least one inlet that opposes the main flow direction, and at least one fin-shaped grid which is arranged on the upstream of the insertion type sensor in the main flow direction; wherein the fin-shaped grid for deflecting the fluid medium to the main flow direction of the insertion type sensor is provided with a plurality of fins and a connecting sheet; wherein each fin is at least arranged to circular, elliptical or has a changeable radius segmentally; wherein the fin is arranged in a manner that the fin has an attack angle (alpha) in 0-90 DEG, preferably 0-20 DEG a