Overview

RDO PRO-X Probe for Process Control & Aquaculture Applications

The In-Situ RDO PRO-X Probe uses breakthrough optical technology to measure DO in demanding process environments. The RDO PRO-X Probe offers several advantages.

Robust and Reliable

• No calibration, conditioning, or membranes required
• Stands up to harsh conditions—Inert construction will not corrode in saline samples.
• Insensitive to common interferences such as hydrogen sulfide, chloride, ammonium, and oils
• Sensor health diagnostics ensure peak performance 
  
  

Cost Effective

• Includes standard 10-m cable
• Includes integral 4-20 mA, Modbus/RS485, and SDI-12 signal outputs
• Eliminates the need for a separate, costly transmitter/controller 
  
  

Accurate Results

• ±0.1 mg/L accuracy from 0 to 8 mg/L DO
• ±0.2 mg/L accuracy from 8 to 20 mg/L DO
• ±10% of reading from 20 to 50 mg/L DO
• Fast response to DO and temperature changes
• Consistent, reproducible results (< 0.05 mg/L reproducibility) 
  
  

Applications

• Aquaculture operations
• Dam discharge applications
• Municipal or industrial water and wastewater treatment plants
• Stormwater management systems
• Real-time remediation systems—pump and treat 
  

Simple Design

• Requires only 8 to 36 VDC power—No costly external transmitters or controllers needed.
• Deploys quickly—Calibration coefficients, serial number, and expiration clock are loaded into the sensor cap.

Key Specifications

Accurate readings:

• ±0.1 mg/L accuracy from 0 to 8 mg/L DO
• ±0.2 mg/L accuracy from 8 to 20 mg/L DO
• ±10% of reading from 20 to 50 mg/L
  
  

Flexible communications and power requirements:
Includes integral Modbus/RS485, SDI-12, and 4-20 mA signal outputs. Uses 8 to 36 VDC input.

Known interferences:

• Alcohols > 5%; hydrogen peroxide > 3%; sodium hypochlorite (commercial bleach) > 3%; gaseous sulfur dioxide; gaseous chlorine
• Organic solvents and certain petroleum-based hydrocarbons may swell the sensing element and destroy it. Examples include, but are not limited to, acetone, chloroform, methylene chloride, and BTEX compounds.

Durable design: Abrasion-resistant foil withstands fouling, high sediment loads, and rapid flow rates.

RDO PRO-X Probe