Product Introduction

The KH.SZ-RDO Optical Dissolved Oxygen (DO) Sensor is a high-precision online instrument for continuous dissolved oxygen measurement in rivers, lakes, reservoirs, and environmental water systems. Utilizing fluorescence quenching technology, it measures DO accurately without chemical reagents or electrode replacement, ensuring long-term stable operation.

Equipped with automatic temperature and salinity compensation, the sensor provides reliable readings across variable environmental conditions. Its IP68 submersible design allows continuous immersion up to 60 meters, making it ideal for long-term field deployment. With RS485 Modbus RTU output, the KH.SZ-RDO integrates seamlessly into telemetry, SCADA, and IoT water monitoring platforms.

This sensor is perfect for environmental water quality monitoring, hydrological research, flood early warning systems, and smart water management networks, offering precise real-time DO data for ecological assessment and resource management.

Key Features

• Optical Fluorescence Measurement
  Fluorescence quenching technology provides accurate dissolved oxygen monitoring without chemical reagents or electrode fouling.
• Wide Measurement Range
  Configurable 0–20 mg/L or 0–200% saturation for diverse environmental water applications.
• High Accuracy and Repeatability
  Measurement accuracy ±0.3 mg/L with repeatability ≤0.3 mg/L ensures reliable long-term monitoring.
• Fast Response
  T90 response time under 60 seconds enables real-time environmental monitoring.
• Automatic Temperature and Salinity Compensation
  Maintains stable readings in varying rivers, lakes, and reservoirs conditions.
• IP68 Submersible Design
  Waterproof housing supports continuous immersion up to 60 meters in harsh field environments.
• Industrial Communication Interface
  RS485 Modbus RTU output allows integration with telemetry, SCADA, and IoT monitoring networks.
• Low Maintenance Operation
  Optical measurement eliminates electrode fouling and chemical use, reducing maintenance requirements.

Application Scenarios

• Rivers, Lakes, and Reservoirs: Continuous dissolved oxygen monitoring for water quality assessment and ecological studies.
• Hydrological Monitoring Stations: Integration into telemetry and SCADA systems for automated data collection.
• Flood Early Warning Systems: Provides real-time environmental DO data to support flood and water resource management.
• IoT-Enabled Smart Water Networks: Seamless integration for remote monitoring and automated water quality management.

Technical Specifications