Description
Overview
GAOTek Dissolved Oxygen Sensor for Aquatic Monitoring is Based on the Fluorescence Quenching Principle. Blue Light Illuminates the Fluorescent Material to Excite and Emit Red Light. Since Oxygen Molecules can Take Away Energy (Quenching Effect), the Time and Intensity of the Excited Red Light are Inversely Proportional to the Concentration of Oxygen Molecules. By Measuring the Phase Difference Between the Excitation Red Light and the Reference Light and Comparing it With the Internal Calibration Value, the Concentration of Oxygen Molecules can be Calculated.
Features
- Fluorescence Method Principle
- No Need Electrolyte, Easy Maintenance
- Automatic Temperature Compensation
- 4-20mA Output Signal
- Support RS-485, Modbus/RTU Protocol
- IP68 Protection, Waterproof
- No Need Controller or Transmitter
- Can be Directly Connected to Computer, PLC etc
- Quick Response, High Precision
- 7 × 24 Hours Continuous Online Monitoring
Technical Specifications
| Customized Support | OEM |
| Principle | Flurescence Method |
| Measurement Range | 0 ppm to 20 ppm |
| Accuracy | ±2% FS |
| Power Supply | DC 12 V |
| Output Signal | RS485, 4 mA to 20 mA |
| Electrical Connection | Pin Type |
| Protection Grade | IP68 |
| Material | PC, Stainless Steel |
| Calibration Method | Two Point Calibrations |
| Thread | G3 or G4, G1 |
| Install | Immersion Type |
| Cable Length | 16.4 ft (5 m) or Customize |
| Temperature Range | 32 °F to 140 °F (0 °C to 60 °C) |