Model 381 Sensors measure the pH or the Oxidation Reduction Potential (ORP) of aqueous solutions in pipelines, open tanks, or ponds. This rebuildable sensor is suitable for use in most industrial applications.

These titanium sensors are designed for applications where the process cannot be shut down and a dedicated sample stream is difficult or impossible to provide.

Provides superior chemical resistance with the rugged Tefzel body that is completely sealed to prevent leakage. The triple junction reference cell provides long life in poisoning processes. AccuGlass ™ pH glass minimized glass cracking.

Models 3900 and 3900VP are provided with a double junction reference, which protects the reference element from poisoning ions – such as ammonia, chlorine, cyanides, and sulfides – in the process.