COD-302 Online COD Sensor
Many organic compounds dissolved in water are absorbent to ultraviolet light. Therefore, the amount of dissolved organic pollutants in the water can be accurately measured by measuring the extent to which these organics absorb UV light at 254nm. The COD-302 online COD sensor adopts two light sources, one is ultraviolet light for measuring COD content in water and the other is reference light for measuring turbidity in water. In addition, the optical path attenuation is compensated by a specific algorithm and the interference of particulate suspended matter can be eliminated to a certain extent, so as to achieve more stable and reliable measurement.
Product features:
No reagents, no pollution, more economical and environmental protection
Small size, easy installation, and continuous water quality monitoring
Measure COD, turbidity and temperature parameters
Automatic compensation for turbidity interference
With a cleaning brush to prevent bio-adhesion
Small drift, fast response, more accurate measurement
Excellent stability even for long-term monitoring
Maintenance-free, long service life and low cost of use
Digital sensor, RS-485 interface, Modbus/RTU protocol
Low power design, anti-interference design
Messages
Product Parameters
Model | COD-302 | |
Measuring principle | Dual wavelength ultraviolet absorption method | |
Scale range | COD | Turbidity |
0~200mg/L equiv. KHP | 0~100NTU | |
0~500mg/L equiv. KHP | 0~200NTU | |
COD Precision | ±5%F.S. | |
COD Resolution | 0.1mg/L | |
Turbidity accuracy | ±5%F.S. | |
Turbidity resolution | 0.1NTU | |
Calibration method | Two-point calibration | |
Output method | RS-485 ( Modbus/RTU ) | |
Power supply | 12~24VDC | |
Power consumption | 0.3W@12V | |
Working conditions | 0~45℃、<0.1MPa | |
Storage temperature | -5~65℃ | |
Protection level | IP68 | |
Installation method | Immersion installation | |
Cable length | 5 meters, other lengths can be customized | |
Sensor housing material | 316L stainless steel |