Dissolved Oxygen Controllers

Dissolved oxygen controllers continuously monitor and control dissolved oxygen (DO) in water and process tanks. Working with online DO sensors and aeration equipment, a dissolved oxygen controller keeps oxygen within safe limits for aquaculture, wastewater biological treatment and industrial process water, protecting fish, beneficial bacteria and product quality.

Modern dissolved oxygen controllers from brands such as ProMinent, SEKO, Hanna and SUPMEA include clear digital displays, automatic temperature compensation, programmable setpoints, PID or on/off control and alarm relays. Many accept optical DO sensors using luminescent technology for low maintenance and stable measurement, with measuring ranges typically from low ppm up to saturation. Standard 4–20 mA outputs and RS485 Modbus communication allow easy integration of DO controllers into PLC, SCADA and building management systems.

A good online DO controller is compatible with immersion or flow-cell sensors and can control blowers, aeration valves or dosing systems so oxygen supply follows real biological demand. Typical dissolved oxygen controller applications include fish farms, shrimp ponds, recirculating aquaculture systems, aeration tanks in wastewater plants, bottled water and beverage production and environmental monitoring.

Kamadi Pakistan supplies dissolved oxygen controllers in Pakistan, offering panel- and field-mount DO controllers with suitable sensors and accessories from leading brands, helping customers design reliable dissolved oxygen monitoring and control systems for aquaculture, municipal water treatment and industrial wastewater applications.