Vibrating Fluid Densimeters: A Solution to the Viscosity Problem

Wenger, Alfred

doi:10.1109/tieci.1980.351684

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…Using the additional parameters, provided by the Pulsed Excitation Method applied to all three modes simultaneously, allows more accurate measurement of the density. In particular, the effect of viscosity [5] on the period and the density measurement can be corrected. Also features such as detecting inappropriate filling or damaged sensors can be deduced from the combined frequency and damping ratio measurements.…”

Section: Discussionmentioning

confidence: 99%

“…Prior to a density measurement, the device constants A and B have to be determined with fluids of known density. Since this simple relationship does not account for, as an example, the effects of the viscosity of the fluid on the resonance frequency, corrections to the model are necessary [5]. Moreover by acquiring data from additional modes of vibration the accuracy of density results can be improved.…”

Section: Introductionmentioning

confidence: 99%

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High Precision Vibration-Type Densitometers Based on Pulsed Excitation Measurements

Rechberger

Amsuss

Rossegger

et al. 2019

Sensors

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Glass flexural resonators have established themselves as one of the de-facto standard methods for measuring the density of liquids in a laboratory environment. The core of this sensor is a U-Tube measuring cell whose oscillator’s resonance frequency changes with the mass of the liquid within the tube. This relationship can be used to derive the density of liquids in a fast and reliable way. In order to achieve the highest accuracy for the density measurement multiple physical effects (e.g., damping due to viscosity effects) need to be taken into account. For a reliable correction, additional measurements are required. The pulsed excitation method is able to produce these additional parameters along with a superior measurement performance compared to previous techniques.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Precision Vibration-Type Densitometers Based on Pulsed Excitation Measurements

Rechberger

Amsuss

Rossegger

et al. 2019

Sensors

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Micromechanical Resonators

Beeby

Tudor

1999

Wiley Encyclopedia of Electrical and Electronics Engineering

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The sections in this article are Introduction Micromechanical Resonators Micromechanical Resonator Materials Resonant Silicon Sensors Comparison of Silicon Sensing Technologies Vibration Excitation and Detection Mechanisms Theory of Resonance Quality Factor Non Linear Behavior Hysteresis Micromechanical Resonant Sensors Micromechanical RF Resonators Conclusions

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Integrated on-line multisensing of fluid flow using a mechanical resonator

Dring

Jones

2000

Sensors and Actuators A: Physical

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Vibrating Fluid Densimeters: A Solution to the Viscosity Problem

Cited by 6 publications

References 2 publications

High Precision Vibration-Type Densitometers Based on Pulsed Excitation Measurements

High Precision Vibration-Type Densitometers Based on Pulsed Excitation Measurements

Micromechanical Resonators

Integrated on-line multisensing of fluid flow using a mechanical resonator

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