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Title: Application of Densitometers to Liquid Measurement
Author: Dean Minehart
Source: 2018 International School of Hydrocarbon Measurement
Year Published: 2018
Abstract: The American Petroleum Institute (API) Manual of Petroleum Measurement Standards (MPMS) Chapter 9 Section 4 provides guidance for online density meter selection/operation, sampling system design and calibration methods. Continuous density measurement may be accomplished with a device located in the main flowing stream or located in a slipstream representative of the main stream. Density measurement is utilized in both volume and mass measurement systems. Volumetric measurement requires the use of density measurement in order to determine correction factors for temperature and pressure on a flowing liquid. Inferred mass measurement systems require density measurement at meter conditions in order to determine mass flow. Direct mass measurement systems require on line density measurement at a meter prover to determine prover mass.

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