Simultaneous Measurement System of Liquid Density and Viscosity Using Steel Tuning Fork

Liu, Dengke; Li, Cao

doi:10.1109/jsen.2023.3243236

Cited by 3 publications

(1 citation statement)

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“…Simple and common tuning fork resonators have been used for a variety of aspects of measurements, e.g., Patimisco et al reported the design and realization of a spectrometer using a quartz tuning fork [14], Liu et al used a new quartz tuning fork with a low resonance frequency for a high-sensitivity light-induced thermoelectronic spectroscopy (LITES) sensor [15], in addition to the quartz tuning forks that can be used for density or viscosity measurements [16,17]. Liu et al chose a steel tuning fork as the sensitive element and achieved the measurement of liquid viscosity and density by deriving the relationship between the resonance frequency and quality factor and the liquid viscosity and density [18]. Voglhuber-Brunnmaier et al applied quartz tuning fork sensors for the measurement of fuel mixing ratios, engine oil condition monitoring, and particle size characterization of suspensions and analyzed the performance of the measurement system [19].…”

Section: Introductionmentioning

confidence: 99%

Design of a Transformer Oil Viscosity, Density, and Dielectric Constant Simultaneous Measurement System Based on a Quartz Tuning Fork

Yang,

Chen,

Ding

2024

Sensors

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Transformer oil, crucial for transformer and power system safety, demands effective monitoring. Aiming to address the problems of expensive and bulky equipment, poor real-time performance, and single parameter detection of traditional measurement methods, this study proposes a quartz tuning fork-based simultaneous measurement system for online monitoring of the density, viscosity, and dielectric constant of transformer oil. Based on the Butterworth–Van Dyke quartz tuning fork equivalent circuit model, a working mechanism of transformer oil density, viscosity, and dielectric constant was analyzed, and a measurement model for oil samples was obtained. A miniaturized simultaneous measurement system was designed based on a dedicated chip for vector current-voltage impedance analysis for data acquisition and a Savitzky–Golay filter for data filtering. A transformer oil test platform was built to verify the simultaneous measurement system. The results showed that the system has good repeatability, and the measurement errors of density, viscosity, and dielectric constant are lower than 2.00%, 5.50%, and 3.20%, respectively. The online and offline results showed that the system meets the requirements of the condition maintenance system for online monitoring accuracy and real-time detection.

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