| 摘要 |
PROBLEM TO BE SOLVED: To provide a chemical analysis apparatus capable of overcoming the drawbacks of a conventional tube pump, capable of precisely quantitatively supplying a solution, and capable of securing the accuracy even when air bubbles are contained or generated in the solution. SOLUTION: The chemical analysis apparatus includes a tube pump having a rotation amount detection means for converting a rotation amount to an electric signal; an analysis tank having a sensor capable of reading physicochemical characteristics of the solution by the electric signal; a suction line disposed on a suction side of the tube pump, communicated with a sample tank, a reagent container or a water container, and having a plurality of valves for selectively feeding a sample, a reagent or water; and a delivery line communicating a delivery side of the tube pump and the analysis tank, and having a gas intrusion detection means for detecting gas contained in the liquid and converting it to the electric signal. The chemical analysis apparatus further includes a calculating means for performing AND operation of the electric signal from the rotation amount detection means and the gas intrusion detection means, and an analysis means for associating the result of the calculating means with the electric signal from a sensor and calculating the ingredient concentration of the sample. COPYRIGHT: (C)2008,JPO&INPIT |
