Apparatus for determining physical properties of fluids

Details Apparatus for determining physical properties of fluids Apparatus for determining physical properties of fluids

G - Physics

01

N

G01N 29/00 (2006.01) G01N 29/02 (2006.01) G01N 29/22 (2006.01)

Patent

CA 2121260

ABSTRACT The invention relates to instruments for precision measurements at different pressures and temperatures of the physical properties of fluids such as isothermal and adiabatic compressibility, density, coefficient of thermal expansion, velocity and absorption of ultrasound; for determining on their base the heat capacities, other thermophysical and thermodynamic properties, functions, potentials. The apparatus comprises a casing (I), made as a pressure vessel with a measuring chamber, a piston (8), a unit (I4) for excitation and reception of signals, recording and processing of data, an oscillation converter (5) installed in the chamber and forming two measuring intercommunicating cells with a permanent (6) and a variable (7) base, respectively. A piston insert (I7) may be installed with a slide fit between the piston and the oscillation converter. The apparatus ensures a higher accuracy and resolving power of measurements of physical properties of fluids under various pressures, volumes and temperatures. II cl., 2 dwg.

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