AN OPTICAL FIBER-BASED TECHNIQUE FOR CONTINUOUS-LEVEL SENSING

An optical fiber-based technique for liquid-level measurement is propo sed, It is based on the power attenuation which occurs in an optical f iber, immersed in a liquid, when the liquid level varies. The theoreti cal analysis allowed a low-cost sensor prototype to be set up. The exp erimental results highlight the prototype capability of measuring liqu id levels with acceptable sensitivity and repeatability.