| 摘要 |
A lance for receiving a sensor or sampler for metal melts has a top part and a bottom part provided for arrangement on the sensor or sampler. The top part and the bottom part are detachably connected to each other by a plug-in coupling, wherein the plug-in coupling has two coupling parts that can be inserted one in the other. Of these coupling parts, one coupling part is arranged on the top part and the other coupling part is arranged on the bottom part of the lance, and the two coupling parts are inserted one in the other in the longitudinal direction of the lance. One of the two coupling parts has, on its open connection end, an opening or groove that extends from the front face of the coupling part in the longitudinal direction of the lance and has, spaced from the front face, an extension formed in the peripheral direction of the coupling part. On the other coupling part a raised portion is formed that engages in the extension. A blocking device, which can move in the longitudinal direction of the lance, is arranged on the top part or bottom part of the lance, such that a catch element of the blocking device is arranged at least partially between at least one part of the raised portion and at least one part of the opening or groove extending in the longitudinal direction of the lance.
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