SH-UVCOD200 COD digital probe
Overview
SH-UV COD-200 is a dual-beam COD intelligent digital probe, which effectively reduces turbidity interference through compensation; it comes with a cleaning brush to avoid the influence of adherents and air bubbles on the measurement. The probe adopts RS485 interface and standard Modbus protocol, the measurement data can be converted into COD, BOD, TOC, etc., rapid response to the water body changes. Differential optical detection, with temperature compensation, high signal accuracy and good stability.
Product features
- Self-cleaning function removes light window stains and air bubbles, maintenance-free
- Dual optical path detection, automatic deduction of turbidity interference on COD detection
- Corrosion-resistant housing, waterproof grade IP68, can work underwater for a long time
- RS485 communication interface, standard Modbus protocol for easy integration.
Technical specifications
| Working principle | Dual-wavelength ultraviolet absorption |
| Meas. wavelength | 254nm, 365nm |
| Measurement range |
COD: (0~100/500) mg/L Other ranges can be customized Turbidity: 100NTU (0~100 mg/L) 600 NTU (0~500 mg/L) |
| Turb. comp. range |
50 NTU (0~100 mg/L) 200 NTU (0~500 mg/L) |
| Repeatability | <1 % |
| Accuracy | ≤5 % |
| Precision | ±5 % |
| Zero drift (24h) |
±2 % F.S. (0-100 mg/L) ±1 % F.S. (0-500 mg/L) |
| Range drift (24h) | ±3 % F.S. |
| Detection limit | 1 mg/L |
| Resolution | 0,1 mg/L |
| Response time T90 | < 30 sec |
| Protection class | IP68 |
| Comm. interface | RS485, protocollo standard Modbus, baud rate 9600 |
| Dimensions |
(0-100) mg/L: (φ33*236) mm, cable 10 m (customizable) (0-500) mg/L: (φ33*221) mm, cable 10 m (customizable) |
| Materials | 316 Stainless-steel/Titanium alloy available |
| Weight | 1 kg |
| Mounting threads | Upper NPT3/4 thread |
| Operating voltage | 12/24 Vdc |
| Power consumption | 0.9 W (motor brushes rotating), 0.4 W (motor brushes not working) |
| Cleaning method | Mechanical brush |
| Calibration period | 1~3 months |
| Operating temp. | (0~50) °C |
Product applications
Environmental surface water, municipal sewage, industrial wastewater