| 摘要 |
The invention concerns an identification system, especially for drillpipes, casings and other objects for use in potentially explosive surroundings, where the system includes a label, and a sensor for automatically reading the label and characterized in that the label comprises a collar totally surrounding the object, containing a bar code readable in an axial direction in relation to the collar, and that extends over the whole collar, so that the object can be identified by the sensor in any rotational position of the collar. |
