A system for measuring fluid flow in a conduit having a gradual bend or arc, and a straight section. The system includes pressure transducers, one or more disposed in the conduit on the outside of the arc, and one disposed in the conduit in a straight section thereof. The pressure transducers measure the pressure of fluid in the conduit at the locations of the pressure transducers and this information is used by a computational device to calculate fluid flow rate in the conduit. For multi-phase fluid, the density of the fluid is measured by another pair of pressure transducers, one of which is located in the conduit elevationally above the other. The computation device then uses the density measurement along with the fluid pressure measurements, to calculate fluid flow.
CONTRACTUAL ORIGIN OF THE INVENTION
The United States Government has rights in this invention disclosed under Contract No. DE-AC07-76ID01570 between the United States Department of Energy and EG&G Idaho, Inc., now Contract No. DE-AC07-94ID13223 with Lockheed Martin Idaho Technologies Company.