Industrial pH measurement sensor manufactured by Rosemount, part of the AccuGlass® Model 3900VP series. These sensors are widely used in process control systems for chemical processing, water treatment, and industrial manufacturing.

The 3900VP series is designed for accurate pH measurement in demanding industrial environments and integrates with process analyzers and transmitters used in automated control systems.

This specific unit is configured without pre-amplifier electronics, allowing it to connect directly to compatible Rosemount transmitters.

Item comes from surplus inventory from a company that went out of business and is being sold as-is.