{"id":155030,"date":"2021-02-26T14:23:56","date_gmt":"2021-02-26T14:23:56","guid":{"rendered":"http:\/\/blog.hannaservice.eu\/orp-parameter\/"},"modified":"2022-10-11T08:01:03","modified_gmt":"2022-10-11T08:01:03","slug":"orp-parameter","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/de\/orp-parameter\/","title":{"rendered":"ORP Parameter"},"content":{"rendered":"\t\t
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Hanna Instruments bietet eine Vielzahl von Messger\u00e4ten zur Messung des Oxidationsreduktionspotenzials (ORP) an.<\/p>\n

Was ist ORP?<\/strong><\/p>\n

Beim Prozess der Oxidationsreduktion verliert ein Molek\u00fcl Elektronen, w\u00e4hrend ein anderes sie gewinnt. Man k\u00f6nnte auch sagen, dass ein Molek\u00fcl reduziert, w\u00e4hrend das andere oxidiert. Das Potenzial, das in diesem Prozess enthalten ist, wird ORP genannt – Redoxpotenzial.<\/p>\n

ORP ist ein sehr wichtiger Parameter, den wir kontrollieren m\u00fcssen, zum Beispiel bei der Wasseraufbereitung, in Schwimmb\u00e4dern, in denen ein Oxidationsmittel, wie Chlor, dem Wasser zugesetzt wird, um die Verunreinigungen zu entfernen. Je h\u00f6her der ORP-Wert, desto h\u00f6her ist dann die Leistung des Desinfektionsmittels.<\/p>\n

ORP-Elektroden<\/strong><\/p>\n

Die ORP-Messungen basieren auf der Differenz zwischen der Gold- und Platinelektrode und der Referenzelektrode. Die gleiche Referenzelektrode, wie sie bei der pH-Elektrode verwendet wird (Ag\/AgCl), wird auch beim Redox-Potential verwendet.<\/p>\n

M\u00fcssen Redox-Elektroden kalibriert werden?
\n<\/strong>
\nNein. Redox-Elektroden m\u00fcssen nicht mit dem Messger\u00e4t kalibriert werden, wie z.B. pH. Dennoch m\u00fcssen ORP-Elektroden vor dem Gebrauch konditioniert werden. Wenn die Elektrode neu ist, tauchen Sie die Spitze in warmes Leitungswasser. Dadurch wird der Fluss der Vergleichsstelle verbessert. Um die Funktion der Elektrode zu \u00fcberpr\u00fcfen, tauchen Sie die Spitze in die ORP-L\u00f6sung HI 7021L oder HI 7022L. Der Messwert sollte +\/- 50mV von dem auf der Flasche angegebenen Wert abweichen. Wenn der Messwert nicht innerhalb der +\/-50mV liegt, ist eine Oxidations- oder Reduktionsbehandlung mit HI 7092 oder HI 7091 erforderlich. Dadurch wird auch die Oberfl\u00e4che der Elektrode vorbereitet und die anf\u00e4ngliche Ansprechzeit beschleunigt. Da sich Inline-Prozesselektroden bereits in einer L\u00f6sung befinden, zeigt Ihnen ein einfacher Test mit HI 7021L oder HI 7022L den Zustand der Elektrode. Sollte Ihre Sonde nach der Konditionierung und dem Test nicht genau genug sein, folgen Sie dem Reinigungsverfahren.<\/p>\n

Welchen ORP-Sensor sollte ich verwenden: Platin oder Gold?
\nPlatin-Sensor: Verwendung in oxidierender Reaktion (\u00fcber 500mV) wie z.B. Pools & Spas, kommunales Trinkwasser. Goldsensor: Verwendung in reduzierender Umgebung (unter 500mV) wie z.B. galvanische Anwendungen, Bergbauindustrie (Cyanid).<\/p>\n

Hanna Instruments bietet eine Vielzahl von Messger\u00e4ten zur Messung des Oxidations-Reduktions-Potentials (ORP) an. Von Tischmessger\u00e4ten in Forschungsqualit\u00e4t bis hin zu Titrationssystemen und Controllern hat Hanna eine genaue, erschwingliche L\u00f6sung f\u00fcr fast jede ORP-Testanwendung.<\/p>\n

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Hanna Instruments bietet eine Vielzahl von Messger\u00e4ten zur Messung des Oxidationsreduktionspotenzials (ORP) an. 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