Patent ID: 7769557

Claim:
A mass flow sensor apparatus for sensing a mass flow rate of a fluid traveling down a flow channel, wherein the fluid is a known fluid type selected from two or more fluid types, each having different fluid characteristics, comprising: a mass flow sensor module for sensing a mass flow rate of the fluid, wherein said mass flow sensor module provides a basic flow signal; a signal compensator unit configured to compensate said basic flow signal using a first set of coefficients, and to output a compensated signal; a signal conditioner unit and a memory, wherein the signal conditioner unit receives said compensated signal and conditions said compensated signal with a second set of coefficients, and outputs a conditioned signal; and said memory storing two or more first set of coefficients wherein each first set of coefficients corresponds to a different fluid type and said second set of coefficients, wherein said first set of coefficients used by the signal compensator unit are selected to correspond to the fluid type of the fluid currently being sensed by the mass flow sensor module, and are provided from the memory to the signal compensator unit, and said second set of coefficients are configured to provide signal conditioning to the compensated signal, and are provided from the memory to the signal conditioner unit.