| 摘要 |
PROBLEM TO BE SOLVED: To enable the state of a liquid to be measured to be measured in real time without incurring increases in measurement device manufacturing costs and measurement costs.SOLUTION: An electrochemical sensor according to the present invention comprises a reference electrode 21, a working electrode, a counter electrode, and a casing 25. The casing 25 is provided with a bottomed cylindrical casing body 31 in which are formed an insertion hole (insertion hole H1) into which the reference electrode 21 can be inserted, an insertion hole into which the working electrode can be inserted, and an insertion hole into which the counter electrode can be inserted, and is configured in such a way that a connection metal fitting (connection metal fitting C1) to which the reference electrode 21 is connected, a connection metal fitting to which the working electrode is connected, and a connection metal fitting to which the counter electrode is connected are disposed inside the casing body 31, allowing each electrode to be removed and reattached. In the casing body 31, a sealing component (sealant 32) for sealing between the periphery of each electrode and the inner surface of each insertion hole is disposed in each insertion hole, checking the immersion of a liquid into the casing body 31 from each insertion hole.SELECTED DRAWING: Figure 2 |
