Environment-independent liquid level sensing based on fiber-optic displacement sensors

✍ Scribed by H. Z. Yang; S. W. Harun; H. Arof; H. Ahmad

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 230 KB
• Volume: 53
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.26358

✦ Synopsis

Abstract

A new fiber‐optic liquid‐level sensor (LLS) for continuous monitoring of the liquid level is proposed using a fiber‐optic displacement sensor (FODS). A float is used to measure the level of liquid in the tank and it is connected to the FODS probe to convert the variation of the liquid level into a displacement change. The performance of the LLS is investigated for two different FODSs with a concave and a flat mirror target. With a concave mirror, six measurement slopes within a range of 25 mm are observed with the highest sensitivity of 1.3015 mV/mm. With a flat mirror, two measurement slopes are observed with the highest sensitivity of 1.4533 mV/mm and the longest measurement range of 4.8 mm. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2451–2453, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26358