Abstract
The measurement method employs a double element transducer (DET) which consists of a piezoelectric ceramic transmitter and a large aperture PVDF membrane receiver separated by a polymethyl-methacrylate (PMMA) buffer rod. Between the receiver and the liquid there is a reference PMMA rod. The density is obtained from the reflection coefficient for the interface of the reference rod and the liquid, and the transit time between this interface and a reflector placed at the opposite wall of the tube. The DET is calibrated once to account for temperature effects. The calibration is incorporated in the signal processing such that in the actual measurement, the temperature of the system is taken into account. The error of measurements performed with this method in water, castor oil and alcohol, at different temperatures, compared with data in the literature or obtained by a pycnometer is less than 1.5%.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
