| 摘要 |
PURPOSE:To achieve an accurate measurement of a liquid to be measured while facilitating the manufacture of an ion selective electrode by heating or cooling varied kinds of ion photosensitive films and the liquid being measured with a thermion element through a heat conductor. CONSTITUTION:In an ion analysis of a liquid to be measured, it is sucked from an inflow port at one end of a passage 36 with a stable temperature and charged to the outflow port at the other end thereof. A temperature detection sensor 37 buried near the passage 36 detects the temperature of the liquid being measured and a thermion element 42 generates heat with a temperature control circuit. The heat generated by the element 42 heats up the liquid being measured in the passage 36 and ion induction films in respective electrodes 31-34 through a casing 40, a thermal compound 41 and a heat conductor 35. The element 42, the casing 40, the compound 41 and the heat conductor 35 are arranged in thermal contact to conduct the heat of the element 42 quickly. Thus, the liquid being measured can be measured accurately while facilitating the manufacture of the electrodes. |
