| 摘要 |
PURPOSE: A level sensing device is provided to prevent foreign materials being sticking on a measuring unit, thereby preventing level sensing errors caused by the measuring unit. CONSTITUTION: A level sensing device comprises a connecting pipe(10), a supplying pipe(20), and a measuring unit(30). The connecting pipe is mounted in a storage tank in which a fluid is stored. The supplying unit is connected to the connecting pipe and supplies air. The measuring unit is joined to the supplying unit and measures a level of the fluid being stored in the storage tank. [Reference numerals] (23) Air tank
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