Dissolved Oxygen Sensor DO485

Smart IoT Monitoring
RS-485 & Wi-Fi interfaces. No app or meter required. QR Code access and OTA updates.

All-in-One IP68 Design
Built-in IoT and sensor, corrosion-resistant and fully submersible.

Stable DO Measurement
Temperature compensation, isolated cable, and surge protection.

Smart Calibration
Web-based three-point calibration with stored settings and the latest three calibration records.

AI Smart Maintenance
Smart electrode diagnostics, optional auto-cleaning, status alerts, and last-reading hold.

–Application areas– Aquaculture, Seawater, Wastewater, Groundwater, Rivers, Plant Nutrient Solutions.

Download Center Catalog User Manual Product FAQ

Feature of Product

Network Interface RS-485 and Wi-Fi web dual interface, no need to install extra apps, supports monitoring and operation via phone or computer

Smart Calibration Webpage Interface Scan with your phone to correct

Waterproof Design IP68 waterproof rating, can be directly submerged in rivers, wastewater, or seawater for measurement

Automatic Cleaning Optional auto-cleaning function extends maintenance intervals

Optional Code & Specifications

DO485 Code 1 Code 2 Code 3

Code 1	Function	Code 2	Connector	Code 3	Cable / Hose Length
N	No Auto-Cleaning	C	Quick plug	3N	3 m+bare wire
				3C	3 meters+ quick plug
				10N	10 m+bare wire
				10C	10 meters+ quick plug
A24	Auto-Cleaning (Including DC24V air pump, nozzle)	F	Cable Head	20N	20 m+bare wire
				20C	20 meters+ quick plug
				x N	x m+bare wire
				x C	x m+ quick plug

Code 1	Function
N	No Auto-Cleaning
A24	Auto-Cleaning (Including DC24V air pump, nozzle)

Code 2	Connector	Code 3	Cable / Hose Length
C	Quick plug	3N	3 m+bare wire
		3C	3 meters+ quick plug
		10N	10 m+bare wire
		10C	10 meters+ quick plug
F	Cable Head	20N	20 m+bare wire
		20C	20 meters+ quick plug
		x N	x m+bare wire
		x C	x m+ quick plug

DO Specification		Temperature Specification
Measuring Range	0~20mg/L(ppm) 0~200% Slope : 70~130%	Temperature Principle	NTC30K
Measuring Range	0~20mg/L(ppm) 0~200% Slope : 70~130%	Measuring Rang	-10~120°C (ATC)
Accuracy	±0.2mg/L (0~8mg/L)	Accuracy	±0.2°C
Accuracy	±0.3mg/L (8~20mg/L)	Accuracy	±0.2°C
Resolution	0.01mg/L	Resolution	0.1°C
Reproducibility	±0.5% F.S	Reproducibility	0.1°C
Electrode Withstand Voltage	Max. 14 psi	Other Specification
Operating Temperature	0~40°C	Link Above	3/4" NPT
Water Velocity	Max. 0.3M/S	Link Below	M42
Response Time	T90 120 S	Housing Material	PP，acid and alkali resistance/ food grade/zero dissolution
Response Time	T90 120 S	Electrode Material	Silver / Zinc electrode
Communication	RS-485 Modbus RTU Wi-Fi web page, no app needed QR code opens the web page (192.168.1.80)	Dimension	Ø50 x L213.9mm
		Weight	≤340kg
		Power	Auto-Cleaning : 24V (Optional) No Auto-Cleaning : 9~36VDC
Certificate	CE (EU) FCC (US)	Power Consumption	Auto-Cleaning : 6.8W No Auto-Cleaning : 0.8W
Certificate	CE (EU) FCC (US)	International Protection Marking	IP68
Technical
Principle	Principle Potentiometric measurement of the sample's relative electrochemical potential gives an accurate oxidation-reduction potential.
Data Res.	16-bit (0.001% F.S)	Surge Prot.	8000VDC
Protection	Polarity, overload, shorts	Installation	Submersion, tee or insertion

DO Specification
Measuring Range	0~20mg/L(ppm) 0~200% Slope : 70~130%
Accuracy	±0.2mg/L (0~8mg/L)
Accuracy	±0.3mg/L (8~20mg/L)
Resolution	0.01mg/L
Reproducibility	±0.5% F.S
Electrode Withstand Voltage	Max. 14 psi
Operating Temperature	0~40°C
Water Velocity	Maximum 0.3M/S
Response Time	T90 120 S
Communication	RS-485 Modbus RTU Wi-Fi web page, no app needed QR code opens the web page (192.168.1.80)
Certificate	CE (EU) FCC (US)
Certificate	CE (EU) FCC (US)

Temperature Specification
Temperature Principle	NTC30K
Measuring Rang	-10~120°C (ATC)
Accuracy	±0.2°C
Resolution	0.1°C
Reproducibility	0.1°C
Other Specification
Link Above	3/4" NPT
Link Below	M42
Housing Material	PP，acid and alkali resistance/ food grade/zero dissolution
Electrode Material	Silver / Zinc electrode
Dimension	Ø50 x L213.9mm
Weight	≤340kg
Power	Auto-Cleaning : DC12or24V (Optional) No Auto-Cleaning : DCV9~36V
Power Consumption	Auto-Cleaning : 6.8W No Auto-Cleaning : 0.8W
International Protection Marking	IP68
Technical
Principle	Principle Potentiometric measurement of the sample's relative electrochemical potential gives an accurate oxidation-reduction potential.
Data Res.	16-bit (0.001% F.S)
Protection	Polarity, overload, shorts
Surge Prot.	8000VDC
Installation	Submersion, tee or insertion