| 摘要 |
There is described an electrochemical gas sensor comprising: (a) a sensing electrode located on the underside of cap (2); (b) a counter electrode (10); (c) a reference electrode (14); (d) a separator (11) containing an electrolyte which is located between, and in contact with, the sensing electrode, the counter electrode and the reference electrode, which separator is made of a material having a capillary action capable of drawing electrolyte in contact with the separator into the separator; (e) a reservoir comprising an electrolyte and a wicking material (12) having a capillary action that is capable of drawing up electrolyte and passing it from the reservoir to the separator (11). The capillary action of the separator (11) is greater than the capillary action of the wick material so that electrolyte is preferentially absorbed in the separator rather than the wick so that the separator maintains adequate ionic conductivity between electrodes for the sensor to operate. |
