| 摘要 |
PURPOSE:To obtain a stable electrode output by arranging an earthing electrode on the uppermost side of a sample inlet of a blood analyzing cell. CONSTITUTION:A sample sucked from a nozzle 12 is led into an analyzing cell through a switching valve 10. When a driving motor 18 is rotated and the switching valve 10 is turned through a rotary shaft 20, standard solutions are selectively led from standard solution bottles 13, 14 to the analyzing cell 2. Although it is considered that the noise of the motor 18 is led into a measuring course system through the shaft 20, an electrode output responding only to the components of the sample is obtained because the measuring course system is earthed by the earthing electrode 28 at the inlet of the cell 2. Although the nozzle 12 is arranged on a position which may be directly contacted with a human body, static electricity or the like generated from the human body is removed by the electrode 28. All the parts constituting the measuring course system and directly contacting with the sample or the standard solutions are either formed by insulating materials or their outside is insulated, so that normal measurement can be attained without leading radio wave noise in air, static electricity and AC component noise into the measuring course system. |
