Liquid level monitoring

1991 ◽  
Vol 89 (3) ◽  
pp. 1482-1482 ◽  
Author(s):  
David W. Telford
Keyword(s):  
Liquid Level ◽  
Level Monitoring

Design of a Sensor System Using Fiber Bragg Grating for Liquid Level and Liquid Density Measurement

2020 ◽  
Vol 18 (12) ◽  
pp. 889-893
Author(s):  
Kalyan Biswas
Keyword(s):  
Fiber Bragg Grating ◽  
Density Measurement ◽  
Sensor System ◽  
Liquid Level ◽  
Bragg Grating ◽  
Liquid Density ◽  
Bragg Wavelength ◽  
Sensing System ◽  
System A ◽  
Level Monitoring

In this work, a simple but versatile sensing system for very accurate sensing of liquid level and liquid density is presented. The sensor works based on basic strain sensitivity of Fiber Bragg Grating (FBG) and principle of liquid obeying Archimedes’ law of buoyancy. In this system, a cylindrical shaped mass suspended from a Fiber Bragg Grating and partially immersed in the liquid to be sensed. If the liquid level in the container or liquid density varies, that change the up thrust on the suspended mass and load on the Fiber will be changed accordingly. The change in the load on Fiber changes strain on the FBG and the reflected Bragg wavelength also changes. The proposed device with proper calibration should be able to carry out real time and nonstop liquid level and liquid density measurements. A mathematical analysis of the system considering liquid properties and geometrical structure of the suspended mass is presented here. Sensitivity of the system for liquid level monitoring is also reported. Achieved results shows the path for the utilization of the proposed sensor system for precise liquid density measurement and liquid level sensing in very large storage tanks used for commercial/residential applications.

Studies on Effect of Corrosion for the Selection of Material of Self-Compensated Capacitive Type Liquid Level Sensor

2019 ◽  
Vol 895 ◽  
pp. 230-236
Author(s):  
C.S. Suresh Babu ◽  
Premila Manohar
Keyword(s):  
Visual Analysis ◽  
Threshold Level ◽  
Liquid Level ◽  
Corrosive Environment ◽  
Sem Images ◽  
Suitable Material ◽  
Level Sensor ◽  
Liquid Level Sensor ◽  
Level Monitoring ◽  
Selection Of

This work deals with the design of fringe capacitance based non-contact type liquid level sensor employing self-compensation feature. The existing capacitive type sensors require additional compensation to overcome the problem of various stray capacitances, specifically due to atmospheric corrosion. This paper emphasizes on the selection of suitable material to accomplish the self-compensation feature in corrosive environment. Rate of attack of corrosion is studied on Copper (Cu) and Aluminium (Al) samples under drizzling environment. Visual Analysis of SEM images of samples exposed for different durations reveal that Al protects itself from the corrosion. Further, performance evaluation of two sensor units with Cu and Al electrodes under the same drizzling environment beside the respective samples indicate that sensor with Al electrodes facilitates the feature of self-compensation in corrosive environment. Further, the sensor is interfaced with Siemens PLC-S200 for liquid threshold level monitoring.

Low-Cost and High-Performance Optical Fiber-Based Sensor for Liquid Level Monitoring

2019 ◽  
Vol 19 (13) ◽  
pp. 4882-4888 ◽  
Author(s):  
Joana Martins ◽  
Camilo A. R. Diaz ◽  
M. Fatima Domingues ◽  
Rute A. S. Ferreira ◽  
Paulo Antunes ◽  
...  
Keyword(s):  
Optical Fiber ◽  
High Performance ◽  
Low Cost ◽  
Liquid Level ◽  
Level Monitoring

The liquid level monitoring with sub-millimeter resolution by discrete wavelength sampling method

2018 ◽  
Vol 282 ◽  
pp. 237-242 ◽  
Author(s):  
Heng Yi ◽  
Jun Xu ◽  
Wei Li ◽  
Ying Wu ◽  
Ke Li
Keyword(s):  
Sampling Method ◽  
Liquid Level ◽  
Level Monitoring

A novel FBG sensor for accurate and real time liquid level monitoring

2018 ◽  
Author(s):  
M. Consales ◽  
S. Principe ◽  
A. Iele ◽  
M. Leone ◽  
H. Zaraket ◽  
...  
Keyword(s):  
Real Time ◽  
Liquid Level ◽  
Fbg Sensor ◽  
Level Monitoring

Plastic fiber optic sensor for continuous liquid level monitoring

2019 ◽  
Vol 296 ◽  
pp. 192-199 ◽  
Author(s):  
Allwyn S. Rajamani ◽  
Divagar M ◽  
V.V.R. Sai
Keyword(s):  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Liquid Level ◽  
Optic Sensor ◽  
Level Monitoring
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