The Broadsensor optical DO sensor is coated with a luminescent material. Blue Light from an LED strikes the luminescent chemical on the sensor. The luminescent chemical instantly becomes excited and then as the excited chemical relaxes, it emit red light. The red light is detected by a photo diode. The time it takes for the chemical to return to a relaxed state is measured by referring an independent red led light. Oxygen has a dampening effect on this reaction. The oxygen concentration is proportional to the time it takes for the luminescent material to return to a relaxed state.
Key Advantages:
• Smart sensor retains all calibration in the sensor
• Membrane less, no electrodes design
• Flow Independent and No oxygen consumption
• No warm-up time required
• Easy to store, air or water are all ok
• User-replaceable sensor cap
• Low drift and long life time
• Low cost, all made in China, including fluorescent film
• Digital output, support RS485 Modbus protocol
• POM, SS316, TA body are selectable
• Support leakage alarm and salinity compensation
| Item | Technical Specification |
|---|---|
| Measurement Method | luminescence quenching technique |
| Range | 0-20mg/L or 0-200% Air Sat. |
| Resolution | 0.01mg/ |
| Accuracy | DO +/-0.3mg/L, Temperature +/-0.3℃（0~45℃） |
| Operating temperature | 0~45℃ |
| Storage Temperatur | -10~50℃ |
| Min. Detection Limi | 0.05mg/L |
| Warranty | 1 year |
| Depth | IP68, 10m Max |
| Power | DC 5~12V 15mA (normal) |
| Output | RS485 and Modbus protocol |
| Material | Titanium, SS316(default), POM, Nylon |
| Dimension | Length 170.5mm, diameter 22mm |
| Flow rat | <3 m/s |
| Response tim | Minimum 45s T90 |
| Field life* | Sensor 2 years or greater, sensor cap 1.5 years or greater |
| Recommended Calibration maintain Frequency* | Sensor 6 months |
Note: *Field life and calibration frequency dependent on site conditions
Contact Us
website: www.broadsensor.com/en/
email:sales@broadsensor.com
tel: +86 18610516470
wechat: 627320610
skype: gaoyunpeng_bj
whatsapp:+8618610516470
