| 摘要 |
13 A method for determining the level of a first layer of liquified material submerged below a second layer of liquified material is disclosed. A tube having first and second opposing tube ends includes a sacrificial cap covering the first tube end. The tube is adapted for insertion of the first tube end through the second layer into the first layer. The cap is adapted to substantially disintegrate after insertion into the first layer, such that pressure pushes a portion of the first material into the tube to a level substantially equal to the level of the first layer. A sensor determines the level of the measured portion in the tube.
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