ZWQ-COD1 COD Sensor
ZWQ-COD1
The ZWQ-COD1 measures chemical oxygen demand (COD) from 0-500 mg/L and turbidity from 0-500 NTU using double-beam ultraviolet absorption, with ±7% accuracy. It has a self-cleaning function and a 316L stainless steel shell, and reports over RS485 Modbus RTU. MetSensor UK supplies the ZWQ-COD1 in the UK as part of the Zata IoT sensor range.
- ✓ Simultaneous COD and turbidity measurement in one probe
- ✓ Double-beam ultraviolet absorption measurement technology
- ✓ Self-cleaning function
- ✓ 316L stainless steel shell for durability in continuous deployment
- ✓ Infrared LED light source with a 5-year decay period
Specifications
| Measuring principle | Ultraviolet absorption |
|---|---|
| Measure range (COD) | 0-500 mg/L |
| Measure range (Turbidity) | 0-500 NTU |
| Resolution (COD) | 0.01 mg/L |
| Resolution (Turbidity) | 0.01 NTU |
| Accuracy | ±7% |
| Interface | RS485 (Modbus RTU) |
| Power supply | DC 12/24V |
| Material | 316L stainless steel shell |
| Electrode dimensions | D32mm x L190mm |
| Electrode cable length | 3m |
| Upper thread interface | NPT 3/4 |
| Measurement technology | Double-beam |
| Light source | Infrared LED, 5-year decay period |
| Self-cleaning function | Yes |
| Measure range (turbidity, secondary parameter) | 0-500 NTU |
| Measure resolution | 0.01 mg/L; 0.01 NTU |
| Electrode dimension | D32mm x L190mm |
| Power | DC12/24V |
Applications
- Surface water monitoring
- Groundwater monitoring
Frequently asked questions
Does the ZWQ-COD1 measure anything besides COD?+
Yes. It also measures turbidity, from 0-500 NTU, alongside COD from 0-500 mg/L.
What measurement principle does it use?+
Double-beam ultraviolet absorption spectrometry.
What is the accuracy of the COD reading?+
±7% across the 0-500 mg/L range.
What is the housing made of?+
316L stainless steel, which suits continuous submerged deployment.