Water Quality Sensors
RYD03-DO
Digital Dissolved Oxygen Sensor
Product Overview
The RYD03-DO is a fluorescent dissolved oxygen sensor with no electrolyte and no membrane replacement. Short polarization time, fast response, and readings nearly unaffected by fouling or flow velocity. Minimal drift allows direct calibration in air with no zero calibration; built-in NTC22K compensation achieves 0.1 Β°C accuracy. RS485 standard Modbus for easy integration.
Key Features
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Fluorescent method, no membrane replacement
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No electrolyte, maintenance-free
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Direct air calibration, no zero point
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NTC22K compensation, 0.1 Β°C accuracy
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Response time <45 s
Technical Specifications
| Principle | Fluorescence |
|---|---|
| Range | 0β20.00 mg/L |
| Resolution | 0.01 mg/L |
| Accuracy | Β±0.3 mg/L |
| Response time | <45 s |
| Temp. compensation | NTC22K, 0.1 Β°C |
| Interface | RS485, standard Modbus |
| Dimensions | D34 mm, L205 mm, 10 m cable (customizable) |
| Environment | 0β60 Β°C (no icing), 0β2 bar |
| Supply | 12β24 V DC |
| Protection | IP68 |
Typical Applications
Surface water DO monitoring
Aeration control in WWTP
Marine aquaculture
Groundwater monitoring
Aquatic ecology research
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