Liquid oxygen and hydrogen are vital fuel components for liquid rocket engines. PMID:27213388Ĭryogenic fluids play an important role in space transportation. The sensor proposed has a sensitivity of between 1.2 and 3.5 RIU−1 and a resolution of between 5.7 Ã- 10−4 and 16.5 Ã- 10−4 RIU. This sensor is recommended for inflammable liquids because inside the tank there are no electrical or electronic signals which could cause explosions. The sensor detects water-fuel and fuel-air interfaces and measures the level of each liquid in real time. We have optimized the structural parameters of the sensor from the theoretical modeling of the reflectance curve. The plasmonic sensor is composed of a hemispherical glass prism, a magnesium fluoride layer, and a gold layer. 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.
Normally, the water level in tanks is unknown, with the problems that this entails. This is undesirable and causes problems such as corrosion in the tanks. Pérez-Ocón, Francisco Rabaza, OvidioĪ standard problem in large tanks at oil refineries and petrol stations is that water and fuel usually occupy the same tank. A Continuous Liquid- Level Sensor for Fuel Tanks Based on Surface Plasmon Resonance
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