System, apparatus, and method for measuring an ion concentration of a measured fluid
The invention discloses a system, apparatus, and method for measuring an ion concentration of a measured fluid. An apparatus, system and method maximizes efficiency and accuracy of measuring an ion concentration of a measured fluid by varying a flow of ions within a measuring cell (1006) in accordan...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a system, apparatus, and method for measuring an ion concentration of a measured fluid. An apparatus, system and method maximizes efficiency and accuracy of measuring an ion concentration of a measured fluid by varying a flow of ions within a measuring cell (1006) in accordance with an output signal of a sensor cell (1006) (206). The pump current through a pump cell is switched between a constant positive current and a constant negative current when upper and lower thresholds of the output signal are reached. The pulse width ratio of the square wave produced by the varying current is compared to a pulse width ratio function derived from a calibration procedure to determine the ion concentration of the measured fluid. |
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