Water Quality Sensors
RYD03-COD
Digital COD Sensor
Product Overview
The RYD03-COD is a digital COD sensor based on UV254 absorption with dual-beam measurement to suppress turbidity and color interference, simultaneously outputting COD and turbidity. No reagents, no secondary pollution, no pretreatment and fast measurement. A self-cleaning wiper regularly cleans the measuring interface for maintenance-free operation in harsh water.
Key Features
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UV254 absorption, reagent-free
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Dual-beam: simultaneous COD + turbidity
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Self-cleaning wiper, maintenance-free
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SAC output (0–400 m⁻¹)
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Configurable measuring/cleaning cycles
Technical Specifications
| Principle | UV absorption (254 nm) |
|---|---|
| COD range | 0–500 mg/L |
| Turbidity range | 0–500 NTU |
| SAC | 0–400 m⁻¹ |
| Accuracy | COD ≤±10%FS; Turb ≤±5%FS; SAC ≤±2%FS |
| Resolution | 0.01 |
| Optical path | 20 mm |
| Interface | RS485, standard Modbus |
| Dimensions | D34 mm, L207 mm, 10 m cable (customizable) |
| Environment | 5–40 °C, 0–0.5 bar (depth ≤5 m) |
| Supply | 12–24 V DC, max 150 mA @12 V |
| Protection | IP68 |
Typical Applications
WWTP influent/effluent monitoring
Outfall online monitoring
Surface water sections
Black & odorous water treatment
Water quality stations
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