Presentation Title

Open-Source Densitometry Using Vibrating Glass Tubes

Faculty Mentor

Dr. William Grover

Start Date

18-11-2017 11:30 AM

End Date

18-11-2017 11:45 AM

Location

9-247

Session

Engineering/CS 3

Type of Presentation

Oral Talk

Subject Area

engineering_computer_science

Abstract

Open-Source Densitometry Using Vibrating Glass Tubes

Author: Vamsi Choday, University of California, Riverside

Mentors: Dr. William Grover & Heran Bhakta, Department of Bioengineering, University of California, Riverside

Fluid densitometry is a vital component of laboratories and industries around the world. For example, the field of point-of-care diagnostics uses densitometry techniques to measure the specific gravity of urine to determine renal function. Vibrating tube densitometer systems are a common tool to measure fluid density with accuracy and precision. However, these systems are expensive and are often confined to a laboratory environment due to the extensive cost associated with large instrumentation. In this work, we have developed an inexpensive ($55), open-source, and portable vibrating tube densitometer using off-the-shelf hardware and electronics. We compare our system to the benchmark density meters that are currently used and show the utility and advantages of developing this fluid density meter. The system’s portability and affordability will enable new applications for fluid densitometry worldwide.

Summary of research results to be presented

To compare our system with the gold standard, a National Instruments NI-DAQ counter was used to measure fluid density using a vibrating tube density meter. For initial tests, DI water with a density of 1.000 g/mL and an NaCl solution with a density of 1.020 g/mL were tested using both systems simultaneously. Figure 1 shows the raw density readings for each fluid from the two systems. When compared against the NI-DAQ’s readings, our Arduino system measured the density of DI water and the 1.020 g/mL NaCl solution with a 0.040% and 0.049% error, respectively. Our results show that a microcontroller worth approximately $50.00 with our proprietary code can function similarly to equipment far more expensive.

This document is currently not available here.

Share

COinS
 
Nov 18th, 11:30 AM Nov 18th, 11:45 AM

Open-Source Densitometry Using Vibrating Glass Tubes

9-247

Open-Source Densitometry Using Vibrating Glass Tubes

Author: Vamsi Choday, University of California, Riverside

Mentors: Dr. William Grover & Heran Bhakta, Department of Bioengineering, University of California, Riverside

Fluid densitometry is a vital component of laboratories and industries around the world. For example, the field of point-of-care diagnostics uses densitometry techniques to measure the specific gravity of urine to determine renal function. Vibrating tube densitometer systems are a common tool to measure fluid density with accuracy and precision. However, these systems are expensive and are often confined to a laboratory environment due to the extensive cost associated with large instrumentation. In this work, we have developed an inexpensive ($55), open-source, and portable vibrating tube densitometer using off-the-shelf hardware and electronics. We compare our system to the benchmark density meters that are currently used and show the utility and advantages of developing this fluid density meter. The system’s portability and affordability will enable new applications for fluid densitometry worldwide.