In-Situ RDO PRO-X Dissolved Oxygen Probe

The RDO PRO-X Probe continuously monitors dissolved oxygen and temperature in ponds, tanks, and raceways. With accuracy up to ±0.1 mg/L, it’s the most accurate DO probe available for aquaculture management, with flexible communications that link easily to telemetry and SCADA/PLS systems for 24/7 monitoring.

This durable probe requires no calibration, conditioning, or membranes. The sensor cap has a 24-month operating life, storing calibration coefficients, and serial number. To replace cap, simply snap off the old one and pop on a new one.


  • – Most accurate DO probe on the market
  • – Flexible communication protocols (4-20 mA, Modbus/RS485, SDI-12)
  • – Available in standard 10m cable or twist-lock in custom lengths
  • – Doesn’t corrode in saline environments
  • – Hydrogen sulfide, chloride, ammonium, and oils don’t cause interference
  • – Automated sensor cap diagnostic alerts
  • – Requires only 8 to 36 VDC


  • – Prevent fish kills – Easily connects to most controllers, SCADA, or PLCs for 24/7 monitoring and alarms.
  • – Increase yields – High-accuracy probe lets you optimize DO for maximum growth.
  • – Accurate, reliable data – Resists abrasion and photobleaching, with automated calibration that prevents long-term drift.
  • – Easy maintenance – Cap lasts 24 months, automatically alerting you when it’s time to replace.

Telemetry2U Compatible

Telemetry2U lets you monitor your sensors, control devices and automate tasks – all through one simple, secure, and configurable IoT platform. In Situ sensors are completely compatible with their technology, allowing for:

  • – Real-time data access on any device
  • – Alerts and alarms for parameters you define
  • – 4G compatibility, allowing you to view live data from even remotely deployed sensors
  • –  Comprehensive reporting and historic data visualizations

Servicing, Calibration and Support

Imbros’ local engineering department can service, repair and calibrate your instrument without expensive shipping costs or wait times.


Download Datasheet
More Information from In-Situ

Make An Enquiry