Online Analyser for Dissolved Oxygen

DUC200-C1

The T-DO-20 Online Dissolved Oxygen Analyzer is an advanced industrial instrument designed for continuous monitoring of dissolved oxygen (DO) and temperature in water and wastewater processes. Equipped with a fluorescence-based DO sensor, it ensures highly stable, accurate, and maintenance-free measurement without oxygen consumption. With features like RS485 communication, relay alarms, and robust industrial design, the analyzer is ideal for environmental monitoring, aeration control, and process optimization.

  • Accurate and stable DO measurement using fluorescence technology
  • No oxygen consumption → longer sensor life and low maintenance
  • Reliable operation in aeration and harsh wastewater conditions
  • Improves aeration efficiency and energy savings
  • Supports automation with communication and control outputs
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  • 1 Year Warranty
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Application-Based Customization

Engineered for Your Process Conditions

Expert Selection Support

Reliable After-Sales Service

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Data Sheet
Application Note
Product Manual

https://tipl.com/wp-content/uploads/2026/03/Online-Dissolved-Oxygen-Analyzer-T-DO-20.docx.pdf

  • Large display, standard RS485 communication, with online and offline alarm, 98* 98* 130 meter size, 92.5* 92.5 hole size, 3.0-inch large screen display.
  • Carefully select materials and strictly select each circuit component, which greatly improves the stability of the circuit during long-term operation.
  • The new choke inductance of the power board can effectively reduce the influence of electromagnetic interference, and the data is more stable.
  • Wastewater treatment plants (aeration tanks)
  • Sewage treatment and environmental monitoring
  • Drinking water systems
  • Aquaculture and fish farming
  • Industrial water treatment processes
  • Rivers, lakes, and environmental monitoring
  • Measurement Range: 0–20.00 mg/L, 0–200.0%
  • Measurement Unit: mg/L, %
  • Resolution: 0.01 mg/L, 0.1%
  • Basic Error (Accuracy): ±1% F.S
  • Temperature Range: -10°C to 150°C
  • Temperature Resolution: 0.1°C
  • Temperature Accuracy: ±0.3°C
  • Analog Output: 4–20 mA or 20–4 mA (load resistance <750 Ω)
  • Communication Output: RS485 MODBUS RTU
  • Relay Output: 5A 240 VAC, 5A 28 VDC or 120 VAC
  • Power Supply: 85–265 VAC or 9–36 VDC (power consumption ≤3 W)
  • Working Conditions: No strong magnetic field interference except geomagnetic field
  • Operating Temperature: -10°C to 60°C
  • Relative Humidity: ≤90% RH
  • Protection Rating: IP65
  • Instrument Weight: 0.6 kg
  • Instrument Dimensions: 98 × 98 × 130 mm
  • Mounting Hole Size: 92.5 × 92.5 mm
  • Installation Methods: Panel mounted, wall mounted or pipeline installation

    Comprehensive Services Using This Product

    From installation to ongoing support, we’re with you every step of the way.

    Thermography

    Infrared imaging for proactive maintenance and safety.

    Thermography
    Calibration

    Precise calibration ensuring measurement accuracy and compliance.

    Calibration

    Industries Using This Product

    Our solutions are trusted by top industries to drive growth and improve operations.

    Water
    Water
    Water

    Reliable solutions for water treatment and quality monitoring in industrial applications.

    Chemicals & Fertilisers
    Chemicals & Fertilisers
    Chemicals & Fertilisers

    Precision solutions for chemical processes, ensuring compliance and operational efficiency.

    Food & Beverage
    Food & Beverage
    Food & Beverage

    Improving production and safety in food and beverage industries with real-time monitoring.

    Pulp & Paper
    Pulp & Paper
    Pulp & Paper

    Optimizing pulp and paper production with integrated solutions for quality and efficiency.

    Sugar & Distillery
    Sugar & Distillery
    Sugar & Distillery

    Enhancing production efficiency in sugar and distillery processes with real-time data monitoring.

    What Customers Say About Us

    Trusted Engineering Support

    The team provided clear technical guidance and practical solutions. Execution was smooth and well coordinated throughout.

    Mr. Vivek NairGeneral Manager – Operations, Cement Industry
    Dependable Technical Partner

    Their approach was systematic and aligned with our plant needs. Overall experience with product and service has been positive.

    Ms. Kavita RaoSenior Manager – Maintenance, Steel Sector
    Application-Focused Solutions

    They understood our process conditions before recommending equipment. Support during installation was handled professionally.

    Mr. Rohan MehtaProject Lead – Power Plant
    Consistent Service Delivery

    Product performance has been stable in regular operations. The support team responds in a timely manner.

    Mr. Anil DeshmukhInstrumentation Head, Process Manufacturing

    Insights & News

    Ensuring Environmental Compliance with CEMS: A Step Ahead
    Learn how Continuous Emission Monitoring Systems (CEMS) help industries stay compliant with environmental norms, providing real-time emission data, remote monitoring, and actionable insights for sustainable and responsible manufacturing.
    How Predictive Maintenance is Transforming Industrial Efficiency
    Discover how advanced monitoring tools like vibration and ultrasound solutions are helping industries move from reactive to predictive maintenance—reducing downtime, extending equipment life, and optimizing productivity across critical operations.
    View More

    Clients Who Have Transformed Their Operations with This Product

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    Frequently Asked Questions About This Product

    Dissolved oxygen indicates the amount of oxygen available in water, which is critical for: Biological treatment efficiency, Aquatic life survival, and Aeration control
    No oxygen consumption, Low maintenance, Stable readings even in aeration tanks, and Longer lifespan
    Yes. It is specifically designed for aeration/anaerobic tanks, where stable measurement is critical.
    Yes. It supports: 4–20 mA outputs, RS485 Modbus communication, and Relay alarms
    Industries include: Water & wastewater, Environmental monitoring, Aquaculture, Power plants, and Chemical processing

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