Measurements of the Density for n-Heptane for Pressures up to 100 MPa by Using a Vibrating-Wire Densimeter
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The paper describes a vibrating-wire densimeter designed for the measurement of fluids density at pressures up to 100 MPa. The densimeter operates with buoyancy effect exerted on a solid weight immersed in the test fluid to change the resonant frequency of a thin metallic wire which suspends the weight. The resonant frequency is related to the fluid density by means of working equations available. Results are presented for n-heptane at pressures up to 100 MPa near room temperature. The results show that the present densimeter can be operated within an uncertainty of about ±0. 4% at the elevated pressures concerned here.
- The Review of High Pressure Science and Technology
The Review of High Pressure Science and Technology 7, 1192-1194, 1998
The Japan Society of High Pressure Science and Technology