Patent ID: 6591674
Filing Date: 2003-07-15
Classification: G01F

Abstract:
A system for sensing the motion of a fluid, the system comprising:a body made of a thermal plastic, said body having an internal flow passage; said body forming at least two elongated port tubes, said port tubes being in fluid communication with said flow passage; said body having outside dimensions of width, depth, and height that are each less than 1.5 inches; and said body comprising a first part and a second part, said first part and said second part being joined by a joint; said joint attaching by at least one selected from the group consisting of; snap together, adhesive, heat staking, ultrasonic welding, and combinations thereof; an electronic sensor located within said flow passage; said sensor comprising an RTD and at least one heat source; and a metal lead frame, said lead frame being in electrical communication with said sensor; said lead frame being molded within said body; and wherein said metal lead frame comprises a metal having a lower coefficient of thermal expansion than said plastic of said body; the fluid being a gas; and the motion being flow rate.