| 摘要 |
PURPOSE:To prevent the error in dispensing of a specimen by providing a sensor on the outlet side of a measuring section, and closing a valve when the specimen arrives at the sensor position. CONSTITUTION:A sensor type dispenser is provided with the measuring section 11 which measures and dispenses a prescribed amt. of a specimen 21, a pressure reducer 12 for sucking and introducing the specimen 21 into the section 11, and a valve 13 interposed in the mid-way of a flow passage 14 from the section 11 to the reducer 12, and is further provided with a sensor 15 on the outlet side of the measuring section. A circuit which transmits the signal for closing the valve 13 from the sensor 15 is provided. When the specimen sucked by the reducer 12 passes the section 11 and the top end theeof arrives at the sensor 15, the valve 13 is closed by the signal from the sensor 15. A sensor 16 provided on the inlet side of the measuring section is used to detect the cases in which the measuring section is clogged with the specimen, the amt. of the specimen is not enough and the specimen is not sucked. |
