PH Measurement Instruments for Accurate and Stable Industrial Liquid Analysis Solutions

Industrial pH systems adopt potentiometry. The glass pH electrode generates a voltage proportional to hydrogen ion concentration, while the reference electrode provides a stable fixed potential. The potential difference between the two electrodes reflects the solution's pH value accurately.

The special thin glass membrane on the pH probe only exchanges H+ ions with the measured liquid. Different hydrogen levels create varying surface potential on the glass layer, forming the key voltage signal used to calculate the exact pH reading by the transmitter.

Built-in reference electrode with saturated electrolyte maintains a constant baseline voltage unaffected by liquid pH. It eliminates signal drift, offering a reliable comparison value for the glass electrode’s variable potential to ensure consistent measurement results.

Hydrogen ion potential changes with liquid temperature. The integrated NTC temperature sensor feeds real-time temperature data to the transmitter, which automatically corrects raw potential signals to remove temperature-induced pH calculation errors.