| 摘要 |
The device includes a probe body (1) and an immersion tube (3), which is axially movable in a bore (2) of the probe body. At least one sealing element (7,8) is provided for sealing the ring gap (4) between the immersion tube and the probe body. At least one further sealing element (13) is provided at the protective cylinder (9) on which the calibrating chamber far side of the opening section (10) is positioned. This further sealing element is positioned so that when the immersion tube is moved, the ring gap between the immersion tube remains sealed, if the open section travels past the first sealing element. In this way, the calibrating chamber remains sealed at its front side, nearer the front end of the immersion tube. |
