Multi-parameter water quality analyzer
The COD online sensor is a dual-beam, probe-type intelligent sensor designed to minimize turbidity interference through automatic compensation. Equipped with a self-cleaning brush, it effectively prevents fouling and air bubble interference. Featuring an RS485 interface and standard Modbus protocol, it delivers real-time measurements that can be converted into COD, BOD, TOC values for rapid water quality assessment.
●Features differential optical detection with temperature compensation, delivering high signal accuracy and excellent stability.
●Equipped with a self-cleaning function to remove fouling and air bubbles from the measurement window, ensuring maintenance-free operation.
●Dual UV optical paths effectively eliminate color interference and automatically compensate for turbidity impact on organic matter measurement.
●Constructed with a corrosion-resistant housing, IP68 waterproof rating, RS485 communication interface, and standard Modbus protocol for easy system integration.
| Product Model | LS COD-1PDNOG | ||
| Principle of Operation | Dual-wavelength UV absorption method |
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| Wavelength Measurement | 254nm，365nm | ||
| Measurement Range | COD: 0~100 mg/L | COD: 0~200 mg/L | COD: 0~500 mg/L |
| Turbidity: 100NTU | Turbidity: 400NTU | Turbidity: 600NTU | |
| Turbidity Compensation Range | 50NTU (0~100mg/L) | 100NTU (0~200mg/L) | 200NTU (0~500mg/L) |
| Repeatability | ≤1% | ||
| Measurement Accuracy | ≤5%（ COD标液KPH） | ||
| Zero Drift (24h) | ±1%F.S. | ||
| Range Drift (24h) | ±3%F.S. | ||
| Detection Limit | 1mg/L | ||
| Resolution | 0.1mg/L | ||
| Protection Grade | IP68 | ||
| Communication Interface | RS485 communication, standard Modbus protocol Baud rate: 9600 Default device address: 50 |
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| Size Specification | （0~100）mg/L：（φ33*236）mm，10-meter cable (customizable) （0~200）mg/L：（φ33*226）mm，10-meter cable (customizable) （0~500）mg/L：（φ33*221）mm，10-meter cable (customizable) |
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| Material | 316L stainless steel / PVC / Titanium alloy (optional) | ||
| Weight | 1kg | ||
| Installation Thread | Top end NPT 3/4 | ||
| Operating Voltage | （9~36）V DC | ||
| Mean Time Between Failures (MTBF) | ≥1440 hours per cleaning cycle | ||
| Power Consumption | 0.9 W (with motorized brush) 0.4 W (without brush operation) |
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| Cleaning Method | Mechanical brush | ||
| Calibration Cycle | 1–3 months | ||
| Operating Environment | （0~50）℃ | ||
