Dalian Yheng Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of dissolved oxygen sensor for sea water in China. Welcome to buy high quality dissolved oxygen sensor for sea water in stock here from our factory. If you have any enquiry about customized service, please feel free to email us.
Datasheet
| Item | Specification |
|---|---|
| Sensor Principle | Optical Luminescence Quenching DO Sensor |
| Measured Parameters | Dissolved Oxygen, Oxygen Saturation, Temperature |
| Measurement Range | DO: 0.00‑20.00 mg/L; Saturation: 0.0‑200.0% |
| Accuracy | DO: ±0.5 mg/L; Temperature: ±0.5 °C |
| Resolution | DO: 0.01 mg/L; Temperature: 0.1 °C |
| Working Temp. | 0.0‑40.0 °C (accuracy ±0.5 °C) |
| Interface | RS‑485 |
| Protocol | Modbus‑RTU (Function code: 0x03, 0x06, 0x10) |
| Serial Default | 9600bps, N‑8‑1, user configurable |
| Modbus Address | 1‑255 (Default: 1); broadcast 0x00 / 0xFF |
| Power Input | 5‑30 VDC (nominal 9‑12 VDC) |
| Power Consumption | <20 mA @12VDC (idle status) |
| Ingress Protection | IP68 |
| Max Pressure | 6‑7 bar for inline installation; 70 m submersible depth |
| Cable | 4‑core shielded TPU cable, OD5.5mmRed:VCC｜White:485_B｜Green:485_A｜Black:GND |
Advantages
- Reagent‑free & low‑cost ownership - No electrolyte, no traditional membrane replacement, zero chemical pollution.
- Superior anti‑interference performance - Zero oxygen consumption; readings not affected by flow rate; resistant to pH variation, ammonia‑nitrogen, industrial chemicals and heavy‑metal ions.
- Multi‑parameter simultaneous output: DO concentration, oxygen saturation & temperature in one sensor.
- High‑performance optical circuit: Low baseline drift and stable signal output.
- Heavy‑duty industrial construction: IP68 waterproof, suitable for high‑pressure pipeline and deep‑water submersible applications.
- Digital RS‑485 Modbus RTU output: Supports remote setup & remote calibration; easy integration with PLC, data logger and SCADA systems.
- Simple maintenance: Only regular cleaning required; field‑replaceable fluorescence sensing cap, no need to return whole unit to factory.
Typical Applications
✅ Wastewater treatment plants & aeration tank monitoring
✅ Surface water, river, lake, reservoir environmental online monitoring
✅ Aquaculture (seawater & brackish water, built‑in salinity compensation)
✅ Process water / drinking‑water pipeline flow‑through detection
✅ Industrial water quality monitoring
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