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Seeed Studio  |  SKU: 314990633

Seeed Studio Fluorescence Dissolved Oxygen Sensor | RS485 Modbus RTU

Price incl. 19% VAT
€418,00
Price excl. VAT
€351,26
Shipping calculated at checkout. Shipping policy

The Seeed Studio Fluorescence Dissolved Oxygen Sensor is an optical DO probe for long-term immersion.

  • Optical method: fluorescence sensing, no oxygen consumed
  • Low upkeep: no electrolyte or membrane to replace
  • IP68: stainless steel body for wastewater use

VAT & Business Purchases

Prices include VAT at the rate of your EU delivery country, so the price shown is the price you pay. EU businesses with a valid VAT number can buy VAT-free: enter your company name and VAT number at checkout and VAT is removed under the intra-community reverse-charge rules. Orders delivered within Cyprus always include Cyprus VAT.

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  • Warranty & Support: Consumer purchases are covered by the 2-year legal guarantee of conformity, and manufacturer warranty terms apply per brand. Our engineering team at shopioT provides technical support.

Delivery and Shipping

Tracked delivery within Cyprus by ACS Courier, and to all EU member states, the United Kingdom and Switzerland by FedEx International Priority. Orders ship from our warehouse in Nicosia, Cyprus, typically within 1–3 business days. Shipping cost is calculated at checkout by destination and parcel weight. See our Shipping Policy for rates and delivery times.

EU business? Enter your company name and a valid EU VAT number at checkout to remove VAT (reverse charge).

Description

The Seeed Studio Industrial Dissolved Oxygen (DO) Sensor utilizes advanced fluorescence-based optical technology to deliver superior accuracy in water quality monitoring. Unlike traditional electrochemical sensors, this optical probe does not consume oxygen during measurement, meaning it requires no minimum flow rate or stirring. Its stainless steel, IP68-rated construction is engineered for permanent immersion in sewage treatment plants, aquaculture tanks, and environmental research sites, providing a "set and forget" solution for critical DO and temperature tracking.

Advanced Optical Sensing

Zero Oxygen Consumption Measures accurately even in stagnant water without the need for flow or constant stirring.
No Consumables Eliminates the frequent replacement of membranes and electrolyte solutions found in polarographic probes.
Modbus RTU Comms Standard RS485 interface for seamless connection to PLCs, RTUs, and LoRaWAN Modbus DTUs.
High Frequency Stability Provides fast response times with internal temperature compensation for dynamic water environments.

Water Management Use Cases

• Aquaculture & Fish Farming: Monitor oxygen levels in real-time to prevent mass mortality and optimize feeding efficiency.
• Sewage & Wastewater Treatment: Control aeration processes effectively by tracking dissolved oxygen in biological treatment tanks.
• Surface Water Research: Conduct long-term hydrological studies in rivers and lakes with minimal site visits.

Technical Integration

The sensor operates on a 12V to 24V DC power supply and outputs data via RS485 Modbus RTU. For wireless deployment, it is perfectly compatible with SenseCap series LoRaWAN transmitters. The probe features a 10-meter reinforced cable and a standard 3/4" NPT thread for flexible pipe or submerged mounting. Calibration is only required every 3 to 6 months depending on the organic load of the water. For professional support on water quality architecture, contact the ShopIoT engineering team.

Specifications
  • Primary Communication Protocol
    RS485 / Modbus RTU
  • Interfaces (I/O)
    RS485 (Modbus RTU)
  • Configuration Method
    Software (via RS485)
  • Monitoring Parameters
    Dissolved Oxygen (DO), Temperature
  • Measurement Technology

    Dissolved oxygen: fluorescence quenching (optical, phase-difference measurement)

    Temperature: Pt1000 (automatic temperature compensation)

  • Measurement Range

    Dissolved oxygen: 0–20.00 mg/L (0–200% saturation, 25°C)

  • Measurement Accuracy

    Dissolved oxygen: ±2% F.S.

    Temperature: ±0.3°C

  • Measurement Resolution

    Dissolved oxygen: 0.01 mg/L

    Temperature: 0.1°C

  • Power Source
    DC Input
  • Power Input
    12–24 VDC (typical 12 VDC); RS485 Modbus RTU output
  • Enclosure Material
    Stainless Steel
  • Mounting Options
    Submerged
  • IP Rating
    IP68
  • Environment Rating
    Outdoor, Industrial
  • Operating Temperature
    0°C to +45°C
  • Warranty
    2 Years

Document Library

Fluorescence DO Meter Datasheet

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