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Products Description
Nexisense RDO-206 Online Fluorescence Dissolved Oxygen Sensor Definition
The Nexisense RDO-206 Online Fluorescence Dissolved Oxygen Sensor is a high-performance device that continuously monitors the concentration of dissolved oxygen in water. This sensor employs fluorescence technology to calculate oxygen concentration by measuring the attenuation of the fluorescent signal. Its lack of need for electrolytes and low power consumption make it widely applicable in water treatment, environmental monitoring, and life sciences research.
Principle
The RDO-206 sensor operates on the principle of fluorescence quenching. When excitation light is directed onto the fluorescent material on the sensor's surface, the material is excited and emits fluorescence. The presence of dissolved oxygen molecules quenches the fluorescence, causing a reduction in the emitted light signal. By detecting the phase difference between the emitted fluorescence and the excitation light, combined with an internal calibration curve, the sensor can calculate the concentration of dissolved oxygen in water.
Structure Analysis
The Nexisense RDO-206 sensor consists of the following main components:
Fluorescent Membrane Head: The core measurement component, responsible for exciting fluorescence and interacting with dissolved oxygen.
Temperature Sensor: Monitors the ambient temperature of the sensor to ensure data accuracy.
Communication Interface: RS-485 interface supports Modbus RTU protocol for easy data transmission and integration.
Protective Housing: Made of 316L stainless steel and high-strength plastic, ensuring stability and durability in harsh environments.
Nexisense RDO-206 Online Fluorescence Dissolved Oxygen Sensor Specifications
| Item | Specification |
|---|---|
| Model | Nexisense RDO-206 |
| Measurement Principle | Fluorescence Method |
| Range | 0-20.00 mg/L |
| Resolution | 0.01 mg/L, 0.1°C |
| Accuracy | ±2% (Oxygen), ±0.3°C |
| Response Time (T90) | < 30s |
| Minimum Detection Limit | 0.08 mg/L |
| Calibration Method | Two-point calibration |
| Temperature Compensation | Automatic compensation (Pt1000) |
| Output Method | RS-485 (Modbus RTU) |
| Working Temperature | 0-50°C |
| Storage Temperature | -5-65°C |
| Installation Method | Submersible installation, 3/4 NPT |
| Power Supply | 12-24V DC |
| Protection Level | IP68 |
| Life of Fluorescent Membrane Head | Approximately 1 year (under normal usage) |
| Power Consumption | 0.2W@12V |
Measurement Method
The Nexisense RDO-206 utilizes the fluorescence method to measure dissolved oxygen. This measurement approach has the following advantages:
No electrolytes are required, eliminating the need for chemical consumables and cumbersome replacements.
The oxygen consumption is minimal, making it unaffected by sample flow rates.
The built-in temperature and salinity compensation ensures that measurement data remains accurate across various environmental conditions.
Nexisense RDO-206 Online Fluorescence Dissolved Oxygen Sensor Application Areas
The Nexisense RDO-206 Online Fluorescence Dissolved Oxygen Sensor can be widely applied in:
Water Treatment Industry: Used for monitoring wastewater and drinking water quality.
Environmental Monitoring: Monitoring water bodies to ensure environmental protection.
Aquaculture: Monitoring dissolved oxygen levels to ensure a suitable environment for aquatic life.
Scientific Research: Used in laboratories and research institutions for water quality analysis.
Conclusion
The Nexisense RDO-206 Online Fluorescence Dissolved Oxygen Sensor stands out as a vital tool in the field of water quality monitoring. Its high precision and reliability, combined with advanced fluorescence technology and automated compensation mechanisms, enable it to deliver accurate measurements under various conditions. Suitable for multiple industries, it offers a wide array of applications and potential, making it an indispensable component in any water quality monitoring system. By choosing Nexisense RDO-206, you will benefit from leading-edge technology and solutions that ensure more efficient and precise water quality monitoring.
