Fiber optic liquid level sensor

Abstract: A fiber - optic liquid level sensor based on multimode interference (MMI) effects is proposed and demonstrated. 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.

A novel intensity-based liquid - level sensor that operates up to 300°C is described. The hysteresis for the measurement of lubricating oil is 0.

An intensity-based fiber - optic liquid-level sensor for point measurement is described.

The main problems with this kind of level sensor are discussed.

The performance of the sensor has been . Fiber - optic sensor for liquid level measurement. Photonics and Optical Physics Laboratory, Optics Department, Instituto Nacional de Astrofísica,. A novel (to the best of our knowledge) liquid level sensor based on multimode interference (MMI) effects is proposed and demonstrated. FU-95Z Toughflex tube mountable liquid level detection. Antonio-Lopez JE(1), Sanchez-Mondragon JJ, LiKamWa P, May-Arrioja DA.

However, there is lack of information on liquid level sensing capacity and reliability. Other optical liquid level sensing systems include optical intensity . These sensors actively discern between . Because optical fibers link the pump source and the detector of fluorescence radiation to the sensor , no electrical connections are needed in or near the liquid. A laboratory prototype, consisting of . He, “ Optical fiber relative humidity sensor based on FBG incorporated thin-core fiber modal interferometer,” Opt. Cui, “ Highly sensitive liquid - level sensor based on etched fiber Bragg grating,”.

Intelectual Property Development at Florida Institute of Technology. Fibers have many uses in remote sensing. Depending on the application, fiber may be used because . The recent advances of polymer technology allowed the introduction of plastic optical fiber in sensor design.

The advantages of optical metrology with plastic optical fiber have attracted the attention of the scientific community, as they allow the development of low-cost or cost competitive systems compared . An asymmetric FPI has been demonstrated for high accuracy continuous liquid level sensing. Its calibrated sensitivity is 2. The presented design makes the proposed sensor ideal for use in . Fiber Optic Sensors are classified in multiple ways.