| 摘要 |
PURPOSE:To enhance the reliability in the injection of a specimen in an analyser and to prevent the damage of a suction nozzle, by detecting the arrangement pitch of the container receiving recessed parts, which are formed to a rack receiving specimen containers at definite positions, by the specimen suction nozzle. CONSTITUTION:A specimen suction nozzle 12 is mounted on the lift mechanism 6, which is mounted on the horizontal positioning mechanism 5 relatively moving in a horizontal direction above specimen containers B, through an elastic member 13 so as to be movable in an up-and-down direction and an up-and-down position detector 15 outputs a signal at the point of time when the member 13 is compressed by predetermined quantity. Then, the recessed parts A for forming an arrangement pitch provided on the surface of a rack R at definite areas are scanned by driving the positioning mechanism 5 by a control unit prior to the sucking operation of the specimen. At this time, arrangement pitch data is outputted upon the reception of the signal from the detector 15 due to the falling of the nozzle 12. At the time of a specimen suction process, the positioning mechanism 5 is controlled based on said arrangement pitch data and the lift mechanism 6 is allowed to fall until the signal from the detector 15 is outputted. |
