RDO Trio Dissolved Oxygen, Conductivity and Temperature Probe

The RDO Trio combines In-Situ's patented Rugged Dissolved Oxygen technology with built-in conductivity and temperature sensors for reliable, real-time water quality monitoring. Integrated salinity compensation ensures accurate measurements across all environments, especially coastal and marine.

A copper antifouling guard and optional integrated wiper extend deployments. Unlike traditional electrochemical methods, the RDO Trio requires no membranes, electrolyte, or water flow, and features a user-replaceable RDO Smart Sensor Cap for easy maintenance. With Modbus/RS485 digital output, it integrates seamlessly with PLCs and connects directly to the VuSitu mobile app and HydroVu data services for simplified setup, logging, and data access.

Why it works

• Integrated cleaning. Flat-face design, integrated wiper, and antifouling guard reduce buildup in high-fouling environments.
• Automatic fouling recovery. With the optional wiper, the probe self-clears false low DO events based on user-set thresholds.
• Integrated salinity compensation. Maintains accurate DO readings in environments with fluctuating salinity.
• EPA-approved method. RDO luminescence-quenching sensors do not consume oxygen and do not require water movement.
• Smart Sensor Cap. 90-point factory calibration stored in the replaceable cap.
• Open Modbus API. Seamless integration with SCADA systems, controllers, and telemetry devices.

Base configuration; options are configured at order time. Contact us to spec the right configuration.