pH Measurement in Chlor-alkali Plants

Easily install a pH sensor made specifically for chlor-alkali measurement
Chlorine Caustic

Longer pH Sensor Life in Harsh Environment

pH is a critical process control parameter that is measured at several points in the chlor-alkali process. pH measurement is challenging as precipitated solids in the purification stages often plug a pH sensor's reference junction. Heavy metal ions can poison the pH sensor's reference and high temperatures shorten a pH sensor's life. Rosemount™ RBI pH/ORP Sensors are specifically designed to deal with the harsh chlor-alkali process. Multiple isolation chambers behind the reference junction act as barriers to protect the inner reference from contact with the harsh chemicals, while the high surface area of the reference junction maintains the electrolyte flow needed for a stable pH signal.

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