Compact and Durable Online COD Sensor with COD Accuracy ±5% for Wastewater Treatment
Dissolved organic compounds in water frequently absorb UV radiation. Measuring the absorption of 254 nm UV light by these substances provides an accurate method for determining the concentration of dissolved organic pollutants in the water. The KWS-150 online COD sensor incorporates two separate light sources: one for measuring the COD concentration via ultraviolet light and another for assessing water turbidity. Furthermore, an advanced algorithm compensates for any reduction in the light path and minimizes interference from suspended particles, resulting in more consistent and dependable measurement outcomes.
- No reagents required, no pollution, economical and environmentally friendly
- Small size, easier to install, and capable of continuous online water quality monitoring
- Can measure parameters such as COD, turbidity and temperature
- Automatic compensation for turbidity interference
- Comes with cleaning brush to prevent biological adhesion
- Small drift, fast response, and more accurate measurement
- Excellent stability even for long-term monitoring
- Maintenance-free, long service life, low cost of use
- Digital sensor, RS-485 interface, Modbus/RTU protocol
- Low power consumption and anti-interference design
| Model | KWS-150 | |
| Measurement Principle | Dual-wavelength UV absorption method | |
|
Measuring Range |
COD | Turbidity |
| 0～200mg/L equiv. KHP | 0～100NTU | |
| 0～500mg/L equiv. KHP | 0～200NTU | |
| 0～1500mg/L equiv. KHP | 0～1000NTU | |
| COD Accuracy | ±5% | |
| Response Time (T90) | ＜10s | |
|
Lowest Detection Limit |
0.2mg/L(0-200mg/L) | |
| 0.4mg/L(0-500mg/L) | ||
| COD Resolution | 0.1mg/L | |
| Turbidity Accuracy | ±5% | |
| Turbidity Resolution | 0.1NTU | |
| Calibration Method | two-point calibration | |
| Output Method | RS-485(Modbus/RTU) | |
| Power Supply | 12～24VDC | |
|
Power Consumption |
0.4W@12V(working) | |
| 2W@12V(cleaning) | ||
| Storage Temperature | -5～65℃ | |
| Working Conditions | 0～50℃,＜0.2MPa | |
| Protection Level | IP68 | |
| Cable Length | 5 m, customizable | |
| Casing Material | 316L stainless steel | |
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