How it works

The ChemScan rugged dissolved oxygen (RDO) RDOX probe uses optical technology for measuring dissolved oxygen (DO) in demanding wastewater process environments. The low-maintenance ChemScan RDOX Probe measures DO and provides extremely stable, accurate results. When the probe initiates a reading, a blue LED emits blue light, which excites lumiphore molecules in the sensing element. Excited lumiphore molecules emit red light, which is detected by a photodiode. Oxygen molecules quench the excited lumiphore molecules and prevent the emission of red light—a process called “dynamic luminescence quenching.” Determination of DO concentration by luminescence quenching has a linear response over a range of concentrations.

Benefits

Low Maintenance
Integrated Design
Cost Effective
Robust Construction

Key advantages

• Long-lasting calibration—the probe maintains calibration and operates with no drift over long-term deployments, delivering consistent, reproducible results.
• Automatic setup—the ChemScan RDOX Cap is pre-loaded with factory calibration coeffi cients, serial number, and manufacture date. ChemScan RDOX can use Classic, Fast, or ChemScan RDOX Cap. Ships with ChemScan RDOX Cap.
• Sensor health diagnostics—internal indicators alert you about excessive wear and remind you about regular maintenance
intervals.
• Fast response—with patented signal processing, the probe responds quickly and maintains stability, even in dynamically changing conditions.