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Oscillating-tube densitometer

The oscillating tube densitometer is a high-precision instrument that measures the density of fluids with a resolution of up to 0.01 kg/m³ and operates on the principle of electronically exciting a U-tube filled with the fluid of interest. The frequency of oscillation of the U-tube is affected by the density of the fluid. Accordingly, the density is calculated from the period of oscillation. The densitometer can measure the densities of gases, liquids, and their mixtures and is designed to cover a wide range of temperatures and pressures. The instrument is highly valuable to industries where precise knowledge of a substance’s density is needed and also for quality control purposes to ensure that materials meet the specified density requirements.

Characteristics:

  • Temperature up to 200 °C.
  • Pressure up to 70 MPa.
  • Only a small sample volume is required.
  • Equipped with an HP-HT saturation vessel for handling gas-liquid mixtures up to 70 MPa and 150 °C.

References

  • Ibeh S. and Jaeger P., 2023. Interfacial tension of triethylene glycol-water mixtures in carbon dioxide at elevated pressures. Journal of Petroleum Exploration and Production Technology, 13, 1379–1390. https://doi.org/10.1007/s13202-023-01615-4
  • Villablanca-Ahues, R., Nagl, R., Zeiner, T., Jaeger, P., 2023. Interfacial tension and phase equilibria for binary systems containing (CH4-CO2)+(n-dodecane; n-butanol; water). Fluid Phase Equilibria 570, 113783. https://doi.org/10.1016/j.fluid.2023.113783
  • Samara, H., Al-Eryani, M., Jaeger, P., 2022. The role of supercritical carbon dioxide in modifying the phase and interfacial properties of multiphase systems relevant to combined EOR-CCS. Fuel 323, 124271. https://doi.org/10.1016/j.fuel.2022.124271