Dissolved Oxygen Sensor

The Smart-O2 sensor is an advanced sensor used to measure dissolved oxygen (DO) levels in water. It provides reliable measurement for water quality monitoring, environmental water analysis, aquaculture applications, and industrial water monitoring systems. It can be integrated with smart monitoring and control systems. The sensor continuously monitors the amount of dissolved oxygen in water, enabling control of water parameters.

The sensor operates on the fluorescence measurement principle. Thanks to this technology, there is no oxygen consumption during measurement, and stable, accurate readings are obtained regardless of water flow rate. Since it does not require electrolytes, maintenance needs are very low, allowing long-term use. 

It can operate on a power supply of DC 5–24V. Thanks to its RS485 output and Modbus communication protocol, it can be easily integrated into automation systems, SCADA systems, and IoT applications. The sensor features built-in temperature compensation and can measure dissolved oxygen together with temperature. 

Its titanium alloy housing provides high resistance to corrosion, allowing safe long-term use in demanding environments such as fresh water, salt water, and wastewater. Thanks to its IP68 protection rating, it is fully waterproof and can operate at depths of up to 30 meters. 

The dissolved oxygen measurement range is 0 – 50 mg/L or 0% – 500% saturation level. The sensor can also measure temperature and delivers its readings with high accuracy. Thanks to its G3/4 threaded connection, it can be easily mounted on water tanks, pools, or pipelines. 

Thanks to its durable optical probe design and fluorescent membrane technology, the sensor delivers stable measurements over the long term. The sensor cap has a long service life under normal usage conditions and requires very little maintenance.

Package Contents:

• Dissolved oxygen (DO) sensor probe x1 
• Oxygen sensor control unit  x1
• Adapter x1

Wireless Battery-Powered O2 Sensor - Smart Series

• Wireless Communication
• Measurement data is transmitted wirelessly. Data can be transmitted up to 10 km. Communication can be bidirectional or one-way.
• Rechargeable battery operation, with rechargeable battery option
• Can operate entirely on the internal battery for dissolved oxygen measurement.
• Dissolved oxygen and temperature measurement
• Has 1 dissolved oxygen and 1 temperature sensor probe input.
• Features replaceable probes.
• Durable sensor construction
• The sensor operates using fluorescence measurement technology. There is no oxygen consumption during measurement, and it is unaffected by water flow rate. Its electrolyte-free design results in low maintenance needs.
• Internet access via the central station, multi-point measurement capability
• Easy scalability
• Thanks to its wireless design, no wiring requirement, and easy installation, you can easily add new sensors to your automation system and expand it.
• IP65 fully waterproof design. 

General Features:

• Measures the amount of dissolved oxygen in water.  Also performs water temperature measurement.
• 0~+85 ℃ operating temperature.
• Industrial solution.
• Wireless reading and settings updates via LoRa-LoRaWAN. 
• 3.7 V 5000 mAh rechargeable Li-ion battery
• Has 1 external dissolved oxygen sensor probe connection output.
• Has 1 dry contact signal output (optional).
• Has RS485 output and MODBUS communication feature (optional).
• Offers up to 3 years of battery life with low power consumption and sleep mode features.
• Can take measurements and transmit data for up to 7 days on battery power.
• Operates in LoRaWAN APP mode.
• External power input feature.
• Automatic operating modes.
• IP65 waterproof design.
• Thanks to easily replaceable external probe connections, you can easily swap out probes.
• Durable titanium alloy housing
• Easy installation and long-lasting sensor design

Some product features are optional. Not all features may be available on a single unit at the same time. Please contact us for details.

Dissolved Oxygen Measurement Specifications:

• Measurement Range: 0 – 50 mg/L
• Saturation measurement: 0 – 500 %
• Measurement principle: Fluorescence optical method
• Accuracy: ±5% or ±0.5 mg/L (20 mg/L); ±10% or ±1 mg/L (>20 mg/L)
• Response time: fast response
• Pressure compensation: supported
• Salinity compensation: supported
• Sensor cap: fluorescent membrane technology
• Maximum operating depth: 30 meters
• Housing material: titanium alloy

Temperature Measurement Specifications:

• Temperature measurement range: 0 ~ 50 °C
• Temperature measurement accuracy: ±0.5 °C
• Temperature compensation: automatic compensation via built-in temperature sensor

Application Areas

• Water Quality Monitoring Systems
• Aquaculture Applications
• Environmental Water Analysis
• Wastewater Monitoring Systems
• Industrial Water Processes
• Water Treatment Plants
• Pool, Tank, and Water Reservoir Monitoring Systems
• Smart Agriculture Applications
• Smart Greenhouse Applications
• Smart Landscaping Applications
• Vertical Farming Applications
• Smart Irrigation Systems
• Soilless Farming Applications
• SCADA Systems
• IoT (Internet of Things)
• Park & Garden Smart Irrigation Solutions
• LoRa / LoRaWAN Sensor Applications
• Turfing & Rooting Automation