A flow sensor (100) is disclosed provided with a body (102) with a first opening (128) and a second opening (130) and a flow pathway (103) coupling the first opening (128) to the second opening (130). At least one thermal sensor (140) is located in the flow pathway (103) between the first opening (128) and the second opening (130). A first turbulence inducer (114, 116, or 118) is located between the first opening (128) and the at least one thermal sensor (140). The turbulence inducer consists of a mesh of joined beams that define a plurality of voids.