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AssigneeProMinent GmbH
InventorsKlaus Koppert, Holger Schopf, Thomas Winkler
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In order to provide a method for cleaning, conditioning, calibration, adjustment and conditioning of an amperometric sensor of a measuring device for determining a content substance in an electrolyte, with a measuring chamber, sealed by a selectively permeable membrane, containing the electrolyte, in which the working electrode and a reference electrode connected electrically with the working electrode are arranged, wherein the membrane is permeable to the content substance which is to be determined, wherein the determination of the content substance takes place during a measuring interval in that a voltage is applied between the working electrode and reference electrode, the current which flows via the electrical connection between working electrode and reference electrode is measured and the content substance deduced from the measured current, said method achieving a comparable or even a better cleaning and conditioning effect than the methods known from the prior art, but for which a simpler equipment set-up is sufficient, a method is described which is characterised in that a conditioning agent is generated in the measuring device, wherein either an oxidising agent which is reduced at the working electrode or a reducing agent which is oxidised at the working electrode is used as conditioning agent.
Method for cleaning, conditioning, calibration and/or adjustment of an amperometric sensor of a measuring device for determining a content substance in a sample, wherein the measuring device comprises an electrolyte and the amperometric sensor, with a measuring chamber, sealed by a selectively permeable membrane, in which the working electrode and a working reference electrode connected electrically with the working electrode are arranged, and wherein the determination of the content substance takes place during a measuring interval in that a voltage is applied between the working electrode and working reference electrode, the current which flows via the electrical connection between working electrode and working reference electrode is measured and the content substance deduced from the measured current, characterised in that the method comprises the following steps:
Amperometric sensor which can be cleaned, conditioned, calibrated and/or adjusted, wherein the sensor comprises at least one working electrode arranged in a measuring chamber arranged to hold the electrolyte, a working reference electrode and a selectively permeable membrane which limits the measuring chamber, characterised in that a generator electrode and a generator reference electrode are arranged in the measuring chamber, wherein a control device is provided with which a measuring voltage can be applied between working electrode and working reference electrode and with which a generator voltage is applied between generator electrode and generator reference electrode, the level of which is different from or equal to that of the measuring voltage.
Measuring device for carrying out,
Dependencies are inferred from the claim text.