A sensor assembly , comprising: an enclosure housing having a first opening in a first side of the enclosure and a second opening in a second side of the enclosure ; a first passageway in fluid communication with the first opening and the second opening; a solid-state sensor positioned within the first passageway , the solid-state sensor comprising: a first sensor positioned at a first axial position in the first passageway ; a second sensor positioned at a second axial position in the first passageway ; and a flow deflector positioned at a third axial position in the first passageway that is between the first axial position and the second axial position, the flow deflector extending into the first passageway so as to constrict the first passageway ; wherein the flow deflector is configured to deflect at least a portion of a flow of a fluid flowing through the first passageway in a first direction around the second sensor but not the first sensor , wherein the second sensor is downstream of the first sensor when a fluid is flowing in the first direction; wherein the flow deflector is configured to deflect at least a portion of a flow of a fluid flowing through the first passageway in a second direction around the first sensor but not the second sensor , wherein the first sensor is downstream of the second sensor when a fluid is flowing in the second direction; characterized in that the flow deflector includes a first recess on a first side of the flow deflector and a second recess on a second side of the flow deflector . an enclosure housing having a first opening in a first side of the enclosure and a second opening in a second side of the enclosure ; a first passageway in fluid communication with the first opening and the second opening; a solid-state sensor positioned within the first passageway , the solid-state sensor comprising: a first sensor positioned at a first axial position in the first passageway ; a second sensor positioned at a second axial position in the first passageway ; and a flow deflector positioned at a third axial position in the first passageway that is between the first axial position and the second axial position, the flow deflector extending into the first passageway so as to constrict the first passageway ; a first sensor positioned at a first axial position in the first passageway ; a second sensor positioned at a second axial position in the first passageway ; and a flow deflector positioned at a third axial position in the first passageway that is between the first axial position and the second axial position, the flow deflector extending into the first passageway so as to constrict the first passageway ; wherein the flow deflector is configured to deflect at least a portion of a flow of a fluid flowing through the first passageway in a first direction around the second sensor but not the first sensor , wherein the second sensor is downstream of the first sensor when a fluid is flowing in the first direction; wherein the flow deflector is configured to deflect at least a portion of a flow of a fluid flowing through the first passageway in a second direction around the first sensor but not the second sensor , wherein the first sensor is downstream of the second sensor when a fluid is flowing in the second direction; characterized in that the flow deflector includes a first recess on a first side of the flow deflector and a second recess on a second side of the flow deflector . <EOS>