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Potentiometric pH measurement principle

Video Multiple industries 12.12.2024

The pH value is used as a unit of measurement for the acidity or alkalinity of a medium. The membrane glass of the sensor supplies an electrochemical potential depending on the pH value of the medium. This potential is generated by the selective accumulation of H+ ions on the outer layer of the membrane. As a result, an electrochemical boundary layer with an electrical potential difference forms at this point. An integrated Ag/AgCl reference system serves as the required reference electrode. The measured voltage is converted to the corresponding pH value using the Nernst equation.

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Memosens CPS11E - Digital pH sensor for standard applications with stable process conditions
Digital pH sensor
Memosens CPS11E

Memosens 2.0 electrode for standard applications in process and water & wastewater industries

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Memosens CPS41E - digital pH sensor with liquid KCl electrolyte
Digital pH sensor
Memosens CPS41E

Memosens 2.0 pH electrode for demanding applications in the chemical and process industries

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Memosens CPS71E - digital pH sensor for aggressive and poisoning media
Digital pH sensor
Memosens CPS71E

Memosens 2.0 pH electrode for chemical processes and poisoning media

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We offer a complete portfolio of pH sensors, transmitters, systems and assemblies for all industries and all kinds of applications. Click here to see all pH devices.

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Memosens CPS77E - ISFET pH sensor for food & beverage and life sciences industries
Digital non-glass pH sensor Memosens CPS77E

Memosens 2.0 ISFET pH electrode for food & beverage and life sciences industries

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Memosens CPS47E - ISFET pH sensor for the chemical, life sciences and food industry
Digital non-glass pH sensor Memosens CPS47E

Memosens 2.0 ISFET pH electrode for the chemical, life sciences and food industries

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Memosens CPS97E - ISFET pH sensor for chemical processes, paper or pigment production
Digital non-glass pH sensor Memosens CPS97E

Memosens 2.0 ISFET pH sensor for polluted media in chemical processes, paper or pigment production

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We offer a complete portfolio of pH sensors, transmitters, systems and assemblies for all industries and all kinds of applications. Click here to see all pH devices.

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