| 摘要 |
PROBLEM TO BE SOLVED: To prevent as much as possible an analysis incorrectness, a measurement impossibility due to clogging of a small powder body such as a coagulated lump or the like by arranging a mixing chamber at a special exchangeable unit and relating an output opening for an analyzed liquid to a powder body collection trap. SOLUTION: A bottom part of a mixing chamber 14 of a mixing chamber unit 34 is inclined in a circular cone. A hole 19 continues with an output opening 18 at a sharp end part of the bottom part. The hole 19 is connected to a first output opening 17 and a second output opening 20 continues at a bottom part of the hole. A limit part 13 where a diameter of the output opening 20 is suddenly reduced works as a trap to a small powder body of a coagulated lump. A powder body 23 stopped to move in a direction to a connection part 47 at a position of the limit part 13, namely, at the collection trap hinders a flow of an analyzed measurement liquid to an analysis block. In this case, the absence of the liquid is detected by a fluid sensor 50, when an analyzer stops. The water is supplied from an input opening and extracted from the output opening 17, whereby the obstructing particle 23 is cleaned. Alternatively, the mixing chamber unit 34 is exchanged with a spare unit to recover an operation efficiency of the analyzer. |
