A Continuous Liquid-Level Sensor for Fuel Tanks Based on Surface Plasmon Resonance
AbstractA standard problem in large tanks at oil refineries and petrol stations is that water and fuel usually occupy the same tank. This is undesirable and causes problems such as corrosion in the tanks. Normally, the water level in tanks is unknown, with the problems that this entails. We propose herein a method based on surface plasmon resonance (SPR) to detect in real time the interfaces in a tank which can simultaneously contain water, gasoline (or diesel) and air. The plasmonic sensor is composed of a hemispherical glass prism, a magnesium fluoride layer, and a gold layer. We have optimized the structural parameters of the sensor from the theoretical modeling of the reflectance curve. The sensor detects water-fuel and fuel-air interfaces and measures the level of each liquid in real time. This sensor is recommended for inflammable liquids because inside the tank there are no electrical or electronic signals which could cause explosions. The sensor proposed has a sensitivity of between 1.2 and 3.5 RIU−1 and a resolution of between 5.7 × 10−4 and 16.5 × 10−4 RIU. View Full-Text
Share & Cite This Article
Pozo, A.M.; Pérez-Ocón, F.; Rabaza, O. A Continuous Liquid-Level Sensor for Fuel Tanks Based on Surface Plasmon Resonance. Sensors 2016, 16, 724.
Pozo AM, Pérez-Ocón F, Rabaza O. A Continuous Liquid-Level Sensor for Fuel Tanks Based on Surface Plasmon Resonance. Sensors. 2016; 16(5):724.Chicago/Turabian Style
Pozo, Antonio M.; Pérez-Ocón, Francisco; Rabaza, Ovidio. 2016. "A Continuous Liquid-Level Sensor for Fuel Tanks Based on Surface Plasmon Resonance." Sensors 16, no. 5: 724.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.