Patent ID: 6843139

Claim:
An instrument for use in sensing fluid flow, comprising: a flow body comprising an inlet, an outlet and a flow restrictor coupling the fluid flow from the inlet to the outlet; a first multisensor having a first sensing surface immersed in the inlet that senses an inlet pressure and temperature of the fluid, the first multisensor passing through a first sensor seal; a second multisensor having a second sensing surface immersed in the outlet that senses an outlet pressure and temperature of the fluid, the second multisensor passing through a second sensor seal; and a circuit that couples to the first and second multisensors, the circuit generating a fluid flow output based on outputs of the first and second multisensors, the fluid flow output including a temperature correction as a function of at least one of the sensed temperatures in the inlet and the outlet, the circuit being fluid isolated from the fluid flow by the first and second sensor seals.