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Title: Liquid Density Measurement Using The Buoy& Force Method
Author: W. G. Cleveland, Jr., J. F. Houser, G. E. Mattingly
Source: 1993 Measurement Science Conference
Year Published: 1993
Abstract: This paper describes a new liquid density measurement device recently developed at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD. This device is capable of measuring liquid hydrocarbon densities by applying Archimedes principle of buoyancy. The design of the device, the pertinent equations, and the procedures used for its operation are described. The device is found to have an estimated total uncertainty of +0.016% for liquids with densities near that of water at ambient conditions. Test results are described which substantiate the performance levels of this device using a hydrocarbon liquid. The capability provided by this device to measure liquid density more accurately than conventional methods is expected to improve significantly the uncertainties of related measurements and calibration services provided by NIST, such as hydrometry, containment volume, and liquid flowrate.

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