| 摘要 |
The invention concerns a device for measuring the level of fluids comprising a light source (1) emitting a light beam (2), a beam splitter (3) and an analysis section (4) comprising detection means (5). According to the invention, the device further comprises a hollow rod (6) being partially immersed in a fluid, having an optical index n equal to within 15 percent to the index n' of said liquid, and having a diffusing end (7). An optical lens (8) conjugates, on the one hand, the light source (1) and the diffusing end (7) of the hollow rod (6), and on the other hand, the detection means (5) and said diffusing end (7). The signal provided by the detection means (5) is a function of the height of the emerging part of the hollow rod (6) and therefore provides a measure of the level of the fluid. <IMAGE>
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