This paper explores the use of a light based measurement technique for the level measurement of cryogenic liquids. Differential pressure transmitters are commonly used to measure the levels of cryogenic liquids such as liquid nitrogen and liquid oxygen in cryogenic tanks. They require the liquid inside the temperature controlled tank to be drawn out into impulse lines. This causes a number of problems, one of the most common one is Chocking of the impulse lines, which ultimately results in a significant loss of material.
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[v1] 2016-10-15 05:45:29
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