Laser-Doppler vibrating tube densimeter for measurements at high temperatures and pressures

Tsutomu Aida, Ai Yamazaki, Makoto Akutsu, Takumi Ono, Akihiro Kanno, Taka Aki Hoshina, Masaki Ota, Masaru Watanabe, Yoshiyuki Sato, Richard L. Smith, Hiroshi Inomata

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

A laser-Doppler vibrometer was used to measure the vibration of a vibrating tube densimeter for measuring P-V-T data at high temperatures and pressures. The apparatus developed allowed the control of the residence time of the sample so that decomposition at high temperatures could be minimized. A function generator and piezoelectric crystal was used to excite the U-shaped tube in one of its normal modes of vibration. Densities of methanol-water mixtures are reported for at 673 K and 40 MPa with an uncertainty of 0.009 g cm3.

Original languageEnglish
Article number115111
JournalReview of Scientific Instruments
Volume78
Issue number11
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Instrumentation

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