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| 1. Principles of optical fluorescence quenching measurement based on life cycle |
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| 2. Long-term stability |
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| 3. No calibration required for more than one year |
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| 4. Small maintenance |
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| 5. Friendly user interface |
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| 6. Used for Andra's only counting device and marine guard system |
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| 7. Automatic detection and identification |
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| 8. Can be used separately |
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| 9. Output format: CANbus AiCaP, RS232 |
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| Dissolved oxygen is the most important measurement parameter in the biochemistry process of water environments and is also commonly used as a tracer for marine research. For hypoxic environments, the monitoring of dissolved oxygen is crucial, such as: |
| 1. Shallow water areas with algae blooms near the shore | 2. Aquaculture |
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| 3. Fjords or other areas with less exchange of water | 4. Areas where mines are dumped or waste dredged |
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| Andra dissolved oxygen probes are based on the principle of fluorescence quenching measurement of life cycle.It uses platinum porphyrin complex as a fluorescent material and is embedded in a breathable fluorescent film. A black light isolation coating protects the fluorescent material from the fluorescence of sunlight and water particles.The fluorescent film is exposed to ambient water on one side and is installed on the optical window of the measuring chamber on the other side.The fluorescent material on the fluorescent film is excitated by blue light to emit red light. The detector detects the time from the emitting blue light to the release of red light. This time is linearly correlated with the dissolved oxygen concentration, and then after temperature compensation, dissolved oxygen is obtainedconcentration.The life cycle-based fluorescence quenching measurement principle has the following advantages compared to electrochemical sensors: |
| 1. The disturbance has little effect (no oxygen consumption) | 2. Better long-term stability |
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| 3. Less affected by pollution | 4. Less affected by stress |
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| 5. No frequent calibration is required to measure the absolute concentration of dissolved oxygen. | 6. The impact of stress is predictable |
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| 7. Faster response time |
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| Technical parameters |
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| (1) μM =μmol/l.If you want to getUnited States/l, divided by31.25. |
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| (2) Changes in salinity>1ms/SmartSalinity compensation is required, pressure>100 noPressure compensation is required |
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| (3) Calibration range:0~120%. |
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| (4) Calibration range:0~36°C. |
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| (5) Parameters are subject to change without notice. |
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