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| Number | Title | Issue Date |
| 7290447 | Density measuring apparatus containing a densimeter and a method of using the same in a pipeline A densimeter contains an inlet pipe section, a second pipe section joined to the downstream end of the inlet pipe section, and an outlet pipe section joined to the downstream end of the second pipe section. The inlet and outlet pipe sections are constrained by a sup... | 11/06/2007 |
| 6450023 | Method and apparatus for air testing pumps A method and apparatus for determining the efficiency of a liquid pump using air as a test medium. The method includes determining the total power output of the pump operated on air and determining the input power necessary to operate the pump on air. The... | 09/17/2002 |
| 5834659 | Device and method for measuring fluid flow in a conduit having a gradual bend 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 sec... | 11/10/1998 |
| 5641915 | Device and method for measuring multi-phase fluid flow in a conduit using an elbow flow meter A system for measuring fluid flow in a conduit. The system utilizes pressure transducers disposed generally in line upstream and downstream of the flow of fluid in a bend in the conduit. Data from the pressure transducers is transmitted to a microprocesso... | 06/24/1997 |
| 4470311 | Apparatus for measuring fluid flow in pipe systems An elbow for a pipe system and through which fluid of the system flows. One or more thermistors located so as to sense the temperature differential between points on opposite curved sides of the elbow resulting from different fluid velocities in the fluid... | 09/11/1984 |
| 4453415 | Flow measuring device for fluid conveying systems A system for measuring the quantity of particulate material carried by a fluid flow. The system is connected to receive the fluid flow and induces a change in direction in that flow. The pressure drop of the fluid flow across the direction change is sense... | 06/12/1984 |
| 4300399 | Measuring two-phase flow The individual flow rates of the phases of a flowing two-phase medium are determined by measuring the pressure differential between two locations in a pipe bend through which the flow passes. The average value of the pressure differential and the RMS value of ... | 11/17/1981 |
| 4282760 | Multiphase fluid flow meter (D#76,244) An improved multiphase fluid flow meter for fluid which contains gas. It has a full circle loop to subject the flowing fluid to centrifugal force, and it can measure the pressure differentials between the center and the outside and inside radii of the loo... | 08/11/1981 |
| 4144754 | Multiphase fluid flow meter A fluid flow meter. It employs measurements related to centrifugal flow of the fluids therethrough. There is a complete loop and means for measuring the differential pressure of the fluid in the loop between the inside and outside of the fluid stream near... | 03/20/1979 |
