SKU: SENS-0756
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Desun Uniwill DSN260 Ammonia Nitrogen Sensor, 0-1000mg/l, RS485 Modbus Output

₹117,299.00 (Inclusive of all taxes)
Out of Stock

The Desun Uniwill DSN260 is an ion-selective electrode (ISE) sensor for reagent-free, real-time measurement of ammonia nitrogen (NH₄-N) concentrations in water, featuring integrated pH and temperature compensation and RS485 Modbus output for integration into industrial PLCs, SCADA, and IoT monitoring systems.

Features

  • Ion-selective electrode (ISE) technology for reagent-free ammonia nitrogen (NH₄-N) detection up to 1000 mg/L.
  • Integrated multi-parameter monitoring with automatic compensation for pH (0-14) and temperature (0-50°C).
  • RS485 Modbus RTU communication protocol for robust industrial and remote IoT system integration.
  • IP68 waterproof, fully submersible housing constructed from durable POM (polyoxymethylene) material.
  • Features individually replaceable electrodes for simplified, low-cost long-term maintenance.

Out of stock

Description

The Desun Uniwill DSN260 Ammonia Nitrogen Sensor employs an ion-selective electrode (ISE) sensing principle to provide accurate, continuous measurement of ammonium ions (NH₄⁺) in aqueous solutions without the need for chemical reagents. This method ensures stable, long-term operation and reduces ongoing consumable costs. The sensor incorporates automatic compensation for pH variations and ambient temperature changes, delivering corrected NH₄-N concentration values directly via its digital interface.

Engineered for harsh, continuous-duty environments, the sensor’s IP68-rated, POM plastic body is designed for permanent submersion in water bodies, wastewater streams, and aquaculture tanks. Its RS485 Modbus output provides noise-immune communication over extended distances, making it suitable for integration into distributed control systems, environmental monitoring networks, and smart aquaculture management platforms.

Key Features

  • Reagent-Free ISE Technology: Eliminates chemical costs and waste, enabling sustainable, low-maintenance continuous monitoring.
  • Multi-Parameter Compensation: Built-in pH and temperature sensors provide automatic correction for highly accurate NH₄-N readings under varying water conditions.
  • Industrial Communication Protocol: Standard RS485 interface with Modbus RTU protocol ensures reliable data transmission and easy integration with PLCs, SCADA, and data loggers.
  • Rugged, Submersible Construction: IP68 waterproof rating and corrosion-resistant POM housing guarantee reliable performance in submerged, demanding applications.
  • Field-Serviceable Design: Electrodes are individually replaceable, significantly reducing downtime and long-term ownership costs compared to sealed sensor units.
  • Extended Cable Length: Comes standard with a 5-meter shielded cable for flexible installation, with options for custom lengths.

Applications

  • Wastewater Treatment Plant Monitoring: Continuous measurement of ammonia levels in aeration tanks, effluent streams, and process control loops.
  • Aquaculture & Fish Farm Management: Real-time monitoring of water quality in ponds, tanks, and recirculating aquaculture systems (RAS) to prevent toxic ammonia buildup.
  • Surface & Drinking Water Quality Networks: Deployment in rivers, lakes, and reservoirs for environmental protection and early warning of contamination events.
  • Industrial Process Water Control: Monitoring ammonia in cooling towers, boiler feed water, and industrial discharge to ensure compliance and process efficiency.
  • Smart Agricultural Runoff Monitoring: Tracking nutrient loads, specifically ammonia nitrogen, in agricultural drainage and irrigation channels.

Technical Specifications

Model NumberDSN260
Measurement ParameterAmmonia Nitrogen (NH₄-N)
Measurement Range0–1000 mg/L
NH₄-N Accuracy±3%
pH Range0–14
pH Accuracy±0.1
Operating Temperature Range0–50°C
Output InterfaceRS485 Modbus RTU
Ingress ProtectionIP68 (Submersible)
Housing MaterialPOM (Polyoxymethylene)
Cable Length (Standard)5 meters
Sensor Length169.5 mm
Sensor Weight800 g

Frequently Asked Questions

What is the sensing principle of the DSN260 ammonia sensor?

The DSN260 uses an ion-selective electrode (ISE) specifically sensitive to ammonium ions (NH₄⁺). This technology allows for direct, reagent-free measurement of ammonia nitrogen concentration in water, providing stable, long-term readings without the need for consumable chemicals or complex sample preparation.

How do I communicate with this sensor and what protocol does it use?

The sensor communicates via a standard RS485 interface using the Modbus RTU protocol. You will need an RS485-to-USB converter or an RS485 port on your PLC/controller to read the data. The Modbus register map provided in the sensor's datasheet contains addresses for NH₄-N concentration, pH, temperature, and status parameters.

Is the DSN260 sensor suitable for permanent submersion?

Yes, the sensor is rated IP68, meaning it is dust-tight and can withstand continuous immersion in water under specified conditions. Its POM plastic housing is highly resistant to corrosion and biofouling, making it ideal for long-term deployment in wastewater, aquaculture, and natural water bodies.

Does the sensor require calibration, and how is it performed?

Yes, periodic calibration is required to maintain accuracy. Calibration involves immersing the sensor in standard solutions of known ammonia nitrogen concentration (typically a low-point and a high-point solution) and sending specific Modbus commands to set the calibration values. The integrated pH electrode also requires separate calibration using standard pH buffer solutions.

What is the purpose of the integrated pH and temperature sensors?

The ammonia ion-selective electrode's response is affected by the pH and temperature of the sample water. The integrated sensors provide real-time measurements of these parameters, allowing the sensor's internal processor to apply automatic compensation. This results in a more accurate and stable NH₄-N reading independent of varying water conditions.

Package Includes

  • 1 x Desun Uniwill DSN260 Ammonia Nitrogen Sensor
  • 1 x 5-meter shielded output cable

Additional Information

Weight 0.8 kg
Dimensions 16.95 cm