Link4 1800 Cloud

Fluorescence Dissolved Oxygen (DO) Sensor

Engineered Especially for Aquaculture and Aquaponics Needs

Achieve accurate oxygen monitoring and enhance water systems with our Fluorescence DO Sensor, ideal for hydroponics, aquaculture, and greenhouses.

Key Benefits:

  • A durable stainless steel sensor body
  • Comes with a 33ft long cable and a PVC pipe fitting
  • Advanced fluorescent technology, powered by 24 volts.
  • Outputs a Modbus/RS-485 digital signal

$2,500.00

Shipping calculcated at Checkout  | *17% surcharge calculated on all hard goods.

Check Out How Simple and Easy to Use the DO Sensor Is

Unboxing Dissolve Oxygen Sensor 

How the Flourescence DO Sensor Works

Installing the DO Sensor with PVC Pipe Fitting

Measurement Range0.00 to 20.00 mg/L
Accuracy±3% of reading or ±0.3 mg/L (whichever is larger)
Resolution0.01mg/L
Power Supply10-25VDC
Operating Temperature0–45 °C operating (±0.5 °C accuracy); –15 °C to +60 °C storage
CommunicationModbus RTU
MaterialStainless Steel 316L
Maximum Pressure≤ 0.1 MPa
Cable10 m standard; optional up to 100 m
  • Sewage Treatment Plants
  • Water Works
  • Industrial Production
  • Surface Water Monitoring
  • Aquaculture and Aquaponics
  • Echo Culture and More
1. How is this different from traditional DO sensors?
Unlike electrochemical sensors, it requires no electrolyte solution or membrane replacement, offering maintenance-free performance and longer lifespan.
2. How is it connected to the control system?
It uses Modbus RS485 communication, ensuring compatibility with Link4 systems and other industry-standard controllers.
3. Is calibration required?
The sensor comes factory-calibrated and holds calibration for extended periods, minimizing downtime.
4. What should I do if I face any issues?
You can check out our YouTube videos on the DO sensor, or you can contact our expert technical support team, who would be more than glad to assist you.
5. What is the operating temperature and pressure range?

It typically operates within 0–50°C and up to 5 bar pressure, making it suitable for most aquaculture and hydroponic environments.

6. Is the sensor affected by salinity or turbidity in water?

The fluorescence method is stable and minimally affected by salinity or turbidity, ensuring accurate readings in diverse water conditions.

7. Can it be used in continuous immersion applications (24/7 monitoring)?

Yes, it’s designed for continuous immersion and long-term 24/7 monitoring with low maintenance requirements.

Link4 Cloud for Web, Android, and iOS

The Link4 Cloud is the latest innovation to Link4’s Cloud technology, supporting the new Pearl controller.

Monitor and set your controllers from anywhere. Create reports, view graphs, and collect data. Log notes using the Grow Journal. Do all of this and more using the intuitive user interface.

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