Product Description

The OPD790 drinking water Dissolved Oxygen Sensor is a cutting-edge digital probe designed for real-time monitoring of dissolved oxygen (DO) levels in potable water systems. This sensor ensures water quality compliance with safety standards by maintaining optimal DO concentrations crucial for aquatic life and water treatment processes. Featuring Fluorescence quenching technology, the sensor provides accurate measurements even in low-oxygen environments while offering temperature, barometric pressure, and salinity compensation for enhanced precision.

Ideal for municipal water treatment plants, industrial processes, and environmental monitoring applications, this drinking water DO Sensor integrates seamlessly with standard industrial control systems via RS485 Modbus interface. Its robust PPS/ABS construction and IP68 protection rating ensure reliable performance in harsh underwater conditions.

Key Features of OPD790 Drinking Water DO Probe

• Fluorescence quenching optical measurement technology for accurate DO detection
• Maintenance-free operation with no consumables required
• Extended calibration intervals with low sensor drift
• Precise measurements in low-oxygen conditions without oxygen consumption
• Universal compatibility with online transmitters, DTUs, and portable meters
• RS485 Modbus RTU interface for industrial system integration
• IP68 waterproof rating for continuous submerged operation
• Internal calibration memory for plug-and-play field deployment

Technical Specifications

Product Name	Drinking Water Dissolved Oxygen Sensor/Probe
Model	OPD790
Brand	SensorMass
Output	RS485 Modbus
Measuring Range	Oxygen: 0.00-20.00 mg/L Saturation: 0-200% Temperature: 0-50℃
Accuracy	±0.1 mg/L (O₂), ±1% (saturation), ±0.5℃
Response Time	T90 <25s (0→100%), <30s (100→0%)
Compensation	Automatic temperature, salinity, and pressure compensation
Material	Body: PPS/ABS | Sensor Head: 316 SS
Protection	IP68 waterproof rating
Dimensions	Ø35mm x 250mm length
Weight	260g

Complete Monitoring Solution

Pair the OPD790 drinking water DO sensor with our DUC2-DO Controller for comprehensive water quality management. The controller features dual 4-20mA outputs for process control integration.