In a whitepaper, Application of Density Meters to Liquid Hydrocarbon Measurement, Emerson’s Dean Minehart highlights passages from the American Petroleum Institute (API) Manual of Petroleum Measurement Standards (MPMS) that give guidance on online density meter selection/operation, sampling system design and field proving methods.
He opens noting:
Continuous density measurement may be accomplished with a device located in the main flowing stream or in a slipstream. Density measurement is utilized in both volumetric and mass measurement systems. Volumetric measurement requires the use of density to determine correction factors for temperature and pressure on a flowing liquid. Inferred mass measurement systems require density measurement at meter conditions to determine mass flow. Direct mass measurement systems require online density measurement at a meter prover to determine prover mass and calculate a mass meter factor.
The application will determine the selection of the right density meter to use. Continue Reading ▶