| 摘要 |
The glass button electrode comprises a disk (21) of pH-sensitive glass. It is covered in the centre by a metallic or in other ways conducting electrode contact (22). Under the influence of the hydrogen ion concentration in the liquid in the vicinity of the glass surface, the ions move through this glass disk and transport their charge to the electrode contact (22). As a result, an electron stream in turn results which flows through the conducting wire (23) to the ITIC 8 as in Figure 1. In order to avoid the construction of a false or interference polarisation or asymmetric potentials between the electrode contact (22) and the glass disk (21), the boundary surface between the disk and the contact is loaded during production with a specific concentration of ions which have a measurable mobility in the glass matrix, such as, for example, silver (= Ag) ions. With this electrode, the electrical creep or scattering losses of the high impedance circuit and also the fragility of the inevitably thin pH glass membrane are largely avoided. <IMAGE>
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