Patent ID: 7775126

Claim:
A method for monitoring fluid flow through a fluid line having an orifice along the length of the fluid line, comprising: providing a package that includes a plurality of piezoresistive sense die in close proximity to one another, wherein a first one of said plurality of piezoresistive sense die is situated adjacent to a first flow diaphragm situated on a first side of the orifice, and a second one of said plurality of piezoresistive sense die is situated adjacent to a second flow diaphragm positioned on a second side of the orifice; transferring a force from said first flow diaphragm to said first piezoresistive sense die through a first plunger, and transferring a force from said second flow diaphragm to said second piezoresistive sense die through a second plunger; and performing a signal compensation utilizing at least one electronic device associated with said plurality of piezoresistive sense die to thereby provide a thermal calibration and a differential calculation, wherein said at least one electronic device communicates electronically with external electronics to automatically monitor fluid flow through the fluid line.