| 摘要 |
An ionic concentration monitor, the monitor (1) comprising a pair of electrodes (2, 3), a signal generator (4), a processor (5), and an indicator (6); wherein in use the electrodes are inserted into a medium under test (7); and the capacitance between the electrodes is derived by the processor from the frequency output by the signal generator, such that an indication of the ionic concentration of the medium under test is output to the indicator. |
