%0 Journal Article %1 Meier2006 %A Meier, Karsten %A Kabelac, Stephan %D 2006 %I AIP %J Review of Scientific Instruments %K 2006 instrument properties speed-of-sound thermodynamic %N 12 %P 123903 %R 10.1063/1.2400019 %T Speed of sound instrument for fluids with pressures up to 100 MPa %U http://dx.doi.org/10.1063/1.2400019 %V 77 %X An instrument for highly accurate measurements of the speed of sound in fluids in the temperature range between 240 and 420 K with pressures up to 100 MPa is described. The measurement principle of the speed of sound sensor is based on a double path length pulse-echo technique. The achieved measurement uncertainties are 3 mK for the temperature, 0.01\% for the pressure below 10 MPa and 0.005\% for the pressure between 10 and 100 MPa, and 0.014\% for the speed of sound. The high accuracy of the instrument is demonstrated by measurements in liquid water and compressed argon. The results for argon prove that our pulse-echo technique agrees with the highly accurate spherical resonator technique, which is commonly employed for speed of sound measurements in gases, in the pressure range where both methods overlap within our measurement uncertainty.

@article{Meier2006, abstract = {An instrument for highly accurate measurements of the speed of sound in fluids in the temperature range between 240 and 420 K with pressures up to 100 MPa is described. The measurement principle of the speed of sound sensor is based on a double path length pulse-echo technique. The achieved measurement uncertainties are 3 mK for the temperature, 0.01\% for the pressure below 10 MPa and 0.005\% for the pressure between 10 and 100 MPa, and 0.014\% for the speed of sound. The high accuracy of the instrument is demonstrated by measurements in liquid water and compressed argon. The results for argon prove that our pulse-echo technique agrees with the highly accurate spherical resonator technique, which is commonly employed for speed of sound measurements in gases, in the pressure range where both methods overlap within our measurement uncertainty.}, added-at = {2011-01-19T18:06:55.000+0100}, author = {Meier, Karsten and Kabelac, Stephan}, biburl = {https://www.bibsonomy.org/bibtex/2f579820fa1ba39e07f6c5868f9cb68e8/thorade}, description = {Speed of sound instrument for fluids with pressures up to 100 MPa}, doi = {10.1063/1.2400019}, eid = {123903}, interhash = {c83b1bdf7027267cdf1ae1f100b6dfc2}, intrahash = {f579820fa1ba39e07f6c5868f9cb68e8}, journal = {Review of Scientific Instruments}, keywords = {2006 instrument properties speed-of-sound thermodynamic}, number = 12, numpages = {8}, pages = 123903, publisher = {AIP}, timestamp = {2011-07-21T10:30:15.000+0200}, title = {Speed of sound instrument for fluids with pressures up to 100 MPa}, url = {http://dx.doi.org/10.1063/1.2400019}, volume = 77, year = 2006 }