Videon, Fred, authorSmith, George L., authorColorado State University Research Foundation, publisher2017-07-182017-07-181958-06https://hdl.handle.net/10217/182576CER59FV11.June 1958.Conducted for the Martin Company, Denver Division, Denver, Colorado through Colorado State University Research Foundation, Civil Engineering Section, Fort Collins, Colorado.This report represents an investigation and evaluation of the performance of several types of flowmeters under simulated prototype conditions. Three types of flowmeters were tested: Gulton Ultrasonic, Gentile Tube, and Potter Model No. 6-424 GLMD-5. The Gulton Ultrasonic Meter on the basis of initial test results was found to be of faulty design, and was, therefore, excluded from further testing. Meter performance for changes in flow and fluid properties was studied. Changes in flow properties included both low and high backpressure intensities, and turbulence induced immediately upstream of the meter by means of a grid. Injection of air into the test line produced a change in the mass density of the fluid - - a fluid property. Meter sensitivity in recording discharge were also made using combinations of peizometric taps located at various positions along the boundary geometry. A comparison is made of the performance of the flowmeters under similar changes in flow and fluid properties.reportsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Flow meters -- TestingFlow meters -- EvaluationHydraulic engineeringText