| 摘要 |
A device for electrically measuring the level of a liquid in a container has a protective tube (1) in which a conductive foil (5) is arranged untwisted. The protective tube (1) is made of two tube sections (2, 3) which are connected to each other by a joint (4). The joint (4) has a well-defined direction of bend as a result of reinforcing ribs (14, 15). This direction is such that the protective tube (1) can be bent only transverse to the plane of the conductive foil (5). The joint (4) is furthermore so developed that the tube sections (2, 3) are urged into a position in which they are aligned with respect to each other. In this way the device can be installed in a container in such a manner that the lower tube section (3), while forming an obtuse angle with the upper tube section (2), has its bottom end resting against a container bottom (16).
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