Dissolved Oxygen (DO) Sensor

Measuring oxygen availability in liquids to sustain biological processes and control reactions.

What Does a Dissolved Oxygen Sensor Measure?

A dissolved oxygen (DO) sensor measures the amount of oxygen dissolved in a liquid, typically expressed in mg/L or ppm. Dissolved oxygen is a critical parameter for biological treatment, aquatic life sustainability, corrosion control, and overall water quality.

Working Principle

DO sensors operate by detecting oxygen diffusion from a liquid into a sensing element. The sensor converts the oxygen concentration into an electrical signal proportional to DO levels.

Common Types of Dissolved Oxygen Sensors

Signals & Outputs

Direct & Indirect Meaning of DO Data

Direct Meaning

The measured value directly represents the concentration of oxygen dissolved in a liquid.

Indirect Meaning

DO trends indirectly indicate biological activity health, aeration efficiency, organic load balance, corrosion potential, and the risk of anaerobic conditions.

Industries Using Dissolved Oxygen Sensors

Role of IoT in Dissolved Oxygen Monitoring

With Industrial IoT integration, DO sensors enable real-time aeration control, early detection of biological process failures, energy optimization, and compliance-ready water quality reporting.

IndustrioPedia Perspective

The Dissolved Oxygen Sensor is a lifeline for biological systems. By ensuring adequate oxygen availability, it sustains treatment efficiency, protects ecosystems, and stabilizes industrial water processes.