Accession Number : ADD015850

Title :   Transient Flowmeter Calibration Facility.

Descriptive Note : Patent, filed 24 Dec 90, patented 3 Aug 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lefebvre, Paul J ; Durgin, William W

Report Date : 03 Aug 1993

Pagination or Media Count : 4

Abstract : An apparatus for defining the free surface of a moving column of a fluid in a vertical pipe to enhance the accuracy of measurements of transient rate of flow of the fluid using electromagnetic flowmeter is described. It provides a neutrally buoyant plug which stays in contact with the free surface of the column of the fluid at all times and thus defines the free surface of the fluid moving in the vertical pipe accurately and reduces the oscillations of the free surface of the fluid.

Descriptors :   *FLUID FLOW, *FLOWMETERS, *PATENTS, *CALIBRATION, ACCURACY, FLUIDS, MEASUREMENT, OSCILLATION, PIPES, PLUGS, SURFACES, TRANSIENTS, FLOW RATE

Subject Categories : Fluid Mechanics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE