Dissolved Oxygen Sensor

Optical and electrochemical dissolved oxygen sensors from HACH, YSI, Emerson Rosemount, ABB, and Endress+Hauser for process monitoring and aeration control in wastewater treatment. LDO luminescent sensors require no membrane replacement and no flow, while galvanic and polarographic probes offer lower initial cost. Standard 0–20 mg/L range with ±0.1 mg/L accuracy and IP68-rated immersion housings.