A density and temperature invariant displacer-type liquid level measuring method

Souza, Matheus; Carvalho, Elisete Mendes; Canuto, Jânio

doi:10.1109/i2mtc.2018.8409839

Cited by 2 publications

(7 citation statements)

References 9 publications

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“…Souza, Carvalho, and Canuto examined an invariant density and temperature method of measuring Matheus liquid displacer-type levels was examined [13]. The method used the ratio between buoyancy measured by two shifters and two load cells to make it independent and, as a consequence, the temperature does not change.…”

Section: Introductionmentioning

confidence: 99%

The Design of Digital Liquid Density Meter Based on Arduino

Megantoro

Widjanarko

Rahim

et al. 2020

jrc

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A measure of liquid thickness is needed to make a dough or formula for medicinal syrup. The tools to measure the thickness available in the market are analog that is less accurate and precision. To overcome these problems, digital density measuring devices are needed. The limitation of the digital density meter, especially liquid, urges the author to carry out further research on the digitization of this measuring instrument. This research aims to make a digital density meter for liquid matter with a high level of measurement accuracy, as the reference measurement study for liquid density in digital form. The instrument was designed using the load cell method as the main sensor. It was also equipped with a DS18B20 waterresistant temperature sensor to measure the temperature of the liquid. The data were analyzed to obtain the accuracy and error of the liquid density measurement from the density meter. The liquid samples used for research were Pertamax, solar, and water. Sample accuracy and error measurement results were 99.83 percent and 0.17 percent respectively for Pertamax, 99.63 percent and 0.37 percent for solar and 99.46 percent and 0.54 percent for water. The measured density value was finally shown on the 16x2 LCD.

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Section: Introductionmentioning

confidence: 99%

The Design of Digital Liquid Density Meter Based on Arduino

Megantoro

Widjanarko

Rahim

et al. 2020

jrc

View full text Add to dashboard Cite

show abstract

“…It implies the need to measure level under different situations such as environmental conditions, vessels forms, liquid density, corrosiveness, temperature and viscosity [2,3]. Thus, there are several kinds of level sensors available whereby capacitive, optical fiber, radar, ultrasound, time-domain reflectometry, hydrostatic, superconducting, displacer, laser, among others [4,5,6]. Level sensors can be classified according to the measurement principle, being divided into three categories: measurements using the effects of density, time-of-flight measurements and measurements by detecting physical properties [7].…”

Section: Introductionmentioning

confidence: 99%

“…Some industrial processes such as oil, food and pharmaceutical industries suffer significant variations in liquid density [2,6]. Also, several level sensors are sensitive to liquid density variations hindering such applications.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, this sensor has significant sensitivity to variations in liquid density [7,11], because the level measurement is performed indirectly through the buoyancy force, also dependent of the liquid density. In this article we present the analysis and the results of a new displacertype liquid level sensor [6,13]. The innovation of the new sensor consists of doing measurements ideally insensitive to the liquid density by adding another displacer and thus calculating the new measured value by the quotient of the buoyancy forces of both displacers.…”

Section: Introductionmentioning

confidence: 99%

“…The innovation of the new sensor consists of doing measurements ideally insensitive to the liquid density by adding another displacer and thus calculating the new measured value by the quotient of the buoyancy forces of both displacers. This new approach was proposed in [6] and [13] validated only by simulation, in this paper we have built a prototype and validated the system through actual experiments. Several tests were performed in order to measure the sensor characteristics, such as linearity, hysteresis and liquid density dependence.…”

Section: Introductionmentioning

confidence: 99%

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Displacer-Type Liquid Level Sensor with Liquid Density Auto-Compensation

Souza

Carvalho

Canuto

et al. 2020

JICS

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In the classic displacer-type liquid level measuring method, liquid level is calculated via the buoyancy force exerted by the liquid on a displacer. This technology has high linearity, precision, accuracy, ease of installation and low cost. Nonetheless, displacer level sensors have significant sensitivity to variations in liquid density, which hinder its use in industrial applications that such quantity is not held constant. In this paper a novel displacer-type liquid level sensor is presented and analyzed. The method consists of adding another displacer and thus calculating the new measured value by the quotient of the buoyancy forces of both displacers. Therefore, the new measurement is ideally insensitive to the variations in liquid density. A prototype was built and prototype results presented high linearity, being able to mitigate the sensitivity to the liquid density, increasing accuracy in the measurements.

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A density and temperature invariant displacer-type liquid level measuring method

Cited by 2 publications

References 9 publications

The Design of Digital Liquid Density Meter Based on Arduino

The Design of Digital Liquid Density Meter Based on Arduino

Displacer-Type Liquid Level Sensor with Liquid Density Auto-Compensation

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