METHOD AND DEVICE FOR MONITORING AND/OR DETERMINING THE CONDITION OF A MEASURING PROBE
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United States of America Patent
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app pub date -
Jun 18, 2009
filing date -
Dec 22, 2006
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Abstract
The condition of an electrochemical measuring probe (1) such as for example a pH-measuring probe, an oxygen-measuring probe, or a CO.sub.2-measuring probe is monitored and/or controlled. The measuring probe (1) has at least one electrode (EL) and is suitable for measuring the ion concentration of a process material (6). A charge storage device (Q2) which belongs to the electrode is charged up during a charge-up phase (T.sub.L) by means of a charge transfer that can be controlled by a controller unit (CU). During a subsequent test phase (T.sub.T) the resultant electrode voltage (U.sub.E) is measured at least once, and the result of the measurement is processed further.
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