An Acoustic Transmission Sensor for the Characterization of Fluids in Terms of Their Longitudinal Viscosity

Physical fluid parameters like viscosity, mass density and sound velocity can be determined utilizing ultrasonic sensors. In this article, we introduce the concept for a recently devised transmission based sensor utilizing pressure waves to determine the longitudinal viscosity of the fluid in the sample chamber. We present the basic sensor setup an according 1D-model for the whole setup and compare simulation results with measurement results obtained with a first prototype device.