METHOD FOR DETERMINING THE REMAINING OPERATION PERIOD OF A POTENTIOMETRIC MEASURING PROBE, DEVICE FOR CARRYING OUT SAID METHOD AND THE USE THEREOF

摘要

The invention relates to a method for determining the remaining operation period of a potentionmetric measuring probe that comprises an electrolyte (110) and a primary reference element (106) and a secondary reference element (108) that are arranged in such a way that a depletion (148) of the electrolyte progressing from an opening (112) of the measuring probe reaches the secondary reference element before the primary reference element. According to the invention, the potential difference between the primary reference element and the secondary reference element is monitored for fulfillment of a predefined tolerance criterion. When said tolerance criterion is violated, a basic operation period lapsed since the measuring probe has been put into service is determined and the remaining operation period is calculated on the basis thereof.