UV254nm COD Analyzer Probe with RS485 Modbus RTU - 0.75-370mg/L Range, 50mm Diameter for Water Quality Monitoring
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Brand:
Daruifuno
Product Description
UV254nm COD Analyzer Probe with RS485 Modbus RTU
The Daruifuno COD probe utilizes Spectral Absorption Coefficient (SAC) methodology to measure light absorption at specific wavelengths. This advanced sensor requires no consumables during operation and simultaneously measures COD, TOC, turbidity, and temperature parameters using dual 254nm and 365nm UV reference light sources.
Measurement Principle
Organic substances dissolved in water absorb ultraviolet light within the 200-390nm electromagnetic spectrum range. The SAC method measures light absorption at 254nm wavelength, which is particularly sensitive to organic absorption. This enables detection of organic substance substitution in water through UV light absorption measurement.
Key Advantages
- Automatic suspended solids interference elimination with turbidity compensation
- Superior test performance delivering stable and reliable measurement values
- Integrated self-cleaning brush prevents biological attachment and reduces maintenance frequency
- Compact 50mm diameter design for convenient drop-in installation
- Digital RS485 output supporting MODBUS communication protocol
- No digestion required - fast analysis without reagents or specialized sampling equipment
- Real-time rapid response measurement without waiting periods
Application Areas
- Compliance monitoring and regulatory reporting
- Wastewater treatment process optimization
- Process control algorithm development
- Cross-connected sewer identification
- Pollution source identification and tracking
- Rapid incident severity assessment
- Advanced treatment monitoring and protection
- Effluent pollution control and analysis
Technical Specifications
COD Probe Parameters
| Parameter | Specification |
|---|---|
| Product Model | CODuv351 |
| Measuring Principle | UV254 ultraviolet absorption method |
| COD Measuring Range | 0.75-370mg/L |
| COD Resolution | 0.01mg/L |
| COD Accuracy | ±2% or ±2.5mg/L |
| TOC Measuring Range | 0.3-150mg/L |
| TOC Resolution | 0.1mg/L |
| Turbidity Range | 0-300 NTU |
| Operating Temperature | +5 to 45℃ |
| Response Time | T90 max. 10s |
| Power Requirements | 12V 15mA (normal), 200mA (max during cleaning) |
| Output Interface | RS485, Modbus RTU protocol |
| Dimensions | 50mm diameter, 215mm length |
| Cable Length | 10m (customizable) |
| Shell Material | POM and 316L stainless steel |
| Protection Rating | IP68 |
Matched COD Controller Parameters
| Parameter | Specification |
|---|---|
| Product Model | DUC2-COD-H |
| Display Range | 0-1000 mg/L |
| Resolution | 0.01 mg/L |
| Relay Control | 2 settable SPST relays (3A/250VAC max) |
| Analog Output | 2 settable 0/4-20mA active current loops |
| Communication | RS485 MODBUS RTU with JSON data format support |
| Data Recording | 14,000 historical data points with timestamp |
| Power Supply | 18-36V DC or 100-240V AC |
| Dimensions | 144×144×120mm (138×138mm panel cutout) |
| Protection Rating | IP66 |
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Suzhou Delfino Environmental Technology Co., Ltd.
Location
Room 301, Building 3, No. 25 Datong Road, High-tech Zone, Suzhou City, JIANGSU P.R CHINA
Contact Person
Yuki Fu