In this paper, a novel liquid level sensing system is proposed to enhance the capacity of the sensing system, as well as reduce the cost and
An innovative fiber optic liquid level sensor based on a peanut-shaped fiber structure has been designed and fabricated for use in micro-buoy systems. This sensor features two cascaded peanut-shaped
Sensitivity levels of 1.4 and 3.3 mV/mm were achieved for water level fluctuations below and above 45 cm, respectively. Furthermore, the sensor demonstrated consistently stable
In this paper, a novel liquid level sensing system is proposed to enhance the capacity of the sensing system, as well as reduce the cost and increase the sensing accuracy.
This is caused by the differences in refractive indices of liquid and air and is used to measure the amount of light transmitted or reflected by the fiber in the preserve or absence of a...
The large number types of sensors with the various principles have been used for the liquid level measurement. Because of their non-electrical nature, fiber optic sensors for a liquid level
Design and construction of an optical fiber sensor for liquid level detection are reported. This sensor operates based on light intensity modulation, and such modulation results from alteration
Liquid level sensing is nowadays a relevant issue in a broad range of applications, forcing the sensors performance and cost to be evaluated in parallel. This paper proposes a fiber optic
The process involves eliminating moisture from the optical fiber coating, then completing the sensor assembly within humidity-controlled conditions. The
Fiber optic liquid level sensors offer exceptional response times, making them well-suited for high-speed applications. With their ability to quickly detect changes in liquid levels, these sensors
Hydrostatic pressure measurement with optical sensors enables precise long-term monitoring of liquid levels. The sensors are extremely robust and stable, as well
This article presents a portable optical fiber sensor (OFS) design for continuous liquid level measurement, fabricated using two pieces of bare polymer optical fibers (POFs). The proposed
This work reports an optical fiber–based continuous liquid level sensor for cryogenic propellant mass gauging, which has significant advantages
This paper presents a portable dual-point optical fiber sensor system for continuous liquid level measurement using polymer optical fibers (POFs). The system contains sensor design and
The article deals with the use of intensity-based fiber optic sensors for the level measurement. Two types of optical fiber sensors have been tested. In the first case the sensing
An optical fiber liquid level sensor based on two twisted polymer optical fibers twining around a racetrack column is demonstrated in this study.
In this work, a novel optical fiber sensor capable of measuring both the liquid level and its refractive index is designed, manufactured and demonstrated through simulations and...
Liquid level is measured using spatially distributed fiber optic temperature sensors and a heater wire inside a sheath.
In this letter, we develop a novel fiber-optic sensor based on a hollow-core Bragg fiber (HCBF) for high-precision detection of liquid level. The intensity responses of anti-resonance reflecting optical
An optical fiber sensor combining the Sagnac interference and modal interference was fabricated and experimentally investigated for the measurements of liquid level and strain.
In addition, the fiber optic level sensor shows a stable and reproducible response over several cycles of 30 min duration at different liquid levels. The results demonstrate that this fiber optic
Fiber optic liquid level sensors are designed to withstand a wide range of temperatures, ensuring their reliability in various industrial processes. They can operate in extreme temperatures,
A fiber optic liquid level detector uses optical fibers to detect the presence or absence of liquids. The waveguide properties of optical fibers tends to deviate from the normal dielectric interfaces so that a
Abstract This study presents a fiber optic liquid level sensor (FOLLS) by acquiring information from the amplitude of spectral fast Fourier transform (FFT) in a specified narrow
Additionally, for cost efficiency, the proposed system employs only one sensor at each spot and all the sensors are multiplexed. In multiplexed systems, when changing the liquid level inside the container,
An intensity-based fiber-optic liquid-level sensor for point measurement is described. The sensing principle is based on the total internal reflection of light, which is disturbed by contact with a
Mathematical models and operation principle are presented for each sensor technology, and parameters, such as level range, level sensitivity, and temperature cross sensitivity, are analyzed.
Commercial accounting for petroleum products requires more precise measurements and more stable operation of the liquid level gauges set up for factory conditions and spark-explosion
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