| Item | Parameters | 
| Model | DS380 | 
| Principle | Fluorescence analysis method | 
| Measuring range | 0~20mg/L or 0-200% saturation | 
| Response time | 3 sec | 
| Accuracy | 1% | 
| Protection level | IP68 | 
| Installation | Submersible | 
| Temperature sensor | NTC | 
| Temperature range | 0~50°C | 
| Temperature accuracy | ±0.2°C | 
| Output | Support RS-485, MODBUS protocol | 
| Power supply | DC 6~12V, current <50mA | 
| Size | Φ26*155 mm | 
| Probe cable length | Default 5 m, customized 10m, 15 m and 30 m cable | 
| Fluorescent cap life | 1 year | 
| Maximum working pressure | 6bar | 
| product material | POM/SS316/Titanium alloy | 
| Calibration method | One or Two-point calibration | 
| Power consumption | < 0.5 W | 
Maintenance schedule
Unlike the electrochemically-dissolved oxygen probe technology, the fluori-dissolved oxygen probe does not consume oxygen and does not require frequent cleaning (except when applied to viscous liquids).
| Maintenance tasks | Recommended maintenance frequency | 
| Cleaning sensor | Clean every 30 days | 
| Check sensor and fluorescent cap for damage |   			 Check every 30 days 
  |   		
| Replace the fluorescent cap | Change once a year | 
|   			 Calibrate the sensor (if required by the competent authority)  |   			  			 According to the maintenance schedule required by the competent authority  |   		
Note:
The maintenance frequency in the above table is only a recommendation. Please maintain the sensor according to the actual usage of the sensor. However, the replacement of the fluorescent cap is recommended to be replaced once a year.
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