Patent ID: 7437928
Filing Date: 2008-10-21
Classification: G01F

Abstract:
1. A flow sensor of the thermal type comprising: a U-shaped sensor tube with two legs and a connecting limb with two adjoining electrical resistance elements, and with a housing on a base, in which the U-shaped sensor tube has an inlet side where flow enters and an outlet side where flow exits, wherein the housing comprises a first and a second housing part of a thermally well-conducting material, each with an inner surface provided with cavities and with an outer surface, the first and second housing parts are arranged with their inner surfaces against each other, while the U-shaped sensor tube has a main surface that extends parallel to the inner surfaces, and the first and second housing parts surround the connecting limb and legs of the U-shaped sensor tube, wherein the connecting limb is connected to the legs via bends, and the legs are held in channels in the inner surfaces of the first and second housing parts which extend from the lower sides of the bends right through to the base, and which legs are thermally clamped between the first and second housing parts along their length.