Optimizing Process Control with pH Measurement

pH sensors are analytical instruments used to measure the hydrogen ion concentration in a solution, indicating its acidity or alkalinity. The pH scale ranges from 0 to 14, where 7 is neutral, values below 7 indicate acidity, and values above 7 signify alkalinity. pH measurement is crucial in a wide range of industries, including water treatment, food and beverage production, pharmaceuticals, agriculture, and chemical manufacturing.

The core component of a pH sensor is a pH-sensitive glass electrode paired with a reference electrode. The glass electrode develops a voltage based on the activity of hydrogen ions in the solution. This voltage is compared to the stable voltage of the reference electrode, and the resulting potential difference is proportional to the pH value.

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