EPA Recommends Approval of In-Situ^® RDO^® Optical DO Methods

The U.S. EPA has granted nationwide approval to three In-Situ RDO optical dissolved oxygen (DO) methods under the Alternate Test Procedure (ATP) process. Learn more ...

RDO PRO Probe for Process & Aquaculture Monitoring

The In-Situ RDO PRO Optical Dissolved Oxygen Probe uses the latest technology to measure DO in demanding process environments. The RDO PRO Probe offers several advantages for monitoring DO in process applications:

Robust and Reliable

• Inert construction will not corrode in high salinity samples.
• Insensitive to common interferences such as hydrogen sulfide, chloride, ammonium, and many others
  
  

Simple Design

• Requires only 8 to 36 VDC power—No costly external transmitters or controllers needed.
• Easy probe configuration—Calibration coefficients are loaded into the sensor cap.

Cost Effective

• Includes complete instrument with a 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 oxygen and temperature changes
• Consistent, reproducible results (< 0.05 mg/L reproducibility)
  
  

Applications

• Aquaculture operations
• Dam discharge applications
• Flood control systems
• Municipal or industrial water and wastewater treatment plants
• River and stream gaging and control
• Real-time remediation systems—pump and treat