SKU: SENS-0794
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SN-3001-LDO-N01-20 Fluorescence Dissolved Oxygen Sensor - RS485 Output, IP68

₹13,959.00 (Inclusive of all taxes)
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The SN-3001-LDO-N01-20 is a fluorescence-based dissolved oxygen sensor with RS485 Modbus output, designed for continuous monitoring in water quality, aquaculture, and industrial process control. It operates from a 10-30V DC supply and features a maintenance-free, IP68-rated design for reliable submersion.

Features

  • Fluorescence quenching principle ensures long-term stability with no oxygen consumption or electrolyte required.
  • RS485 Modbus communication interface for easy integration with PLCs, SCADA, and data loggers.
  • Broad 0-20 mg/L (0-200% saturation) measurement range suitable for diverse water bodies.
  • Rugged IP68 waterproof encapsulation for reliable operation in submerged or harsh environments.
  • Wide 10-30V DC power input compatibility for flexible field and industrial deployment.

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Description

The SN-3001-LDO-N01-20 dissolved oxygen sensor utilizes a fluorescence quenching method, where an oxygen-sensitive luminescent layer is excited by an internal LED. The presence of oxygen molecules reduces the fluorescence lifetime, which is precisely measured to calculate the dissolved oxygen concentration. This optical principle eliminates the need for membranes, electrolytes, or oxygen consumption, resulting in minimal maintenance and excellent long-term stability.

Housed in a robust, IP68-rated enclosure, the sensor is designed for continuous submersion and operation in temperatures from 0 to 50°C. Its RS485 Modbus RTU output provides a standardized digital signal for seamless connection to industrial control systems, data acquisition units, or environmental monitoring networks. The sensor’s rapid response time and accuracy make it ideal for dynamic water quality assessment.

Key Features

  • Fluorescence-based optical sensing for maintenance-free, stable operation.
  • Digital RS485 Modbus RTU output for noise-immune, long-distance communication.
  • IP68 waterproof rating ensures reliable performance in fully submerged applications.
  • Wide operating voltage range (10-30V DC) accommodates various power sources.
  • Low power consumption (<50 mA typical) for energy-efficient continuous monitoring.
  • Fast response time for real-time dissolved oxygen tracking.
  • Compact and rugged construction (200 x 80 mm) for easy deployment.
  • Calibration-free operation out of the box for simplified setup.

Applications

  • Continuous dissolved oxygen monitoring in aquaculture ponds and hatcheries.
  • Wastewater treatment plant process control and effluent quality compliance.
  • Environmental water quality monitoring in rivers, lakes, and reservoirs.
  • Industrial process water monitoring for biotechnology and pharmaceutical production.
  • Aquarium and life support system (LSS) monitoring in public aquariums and research facilities.

Technical Specifications

Model NumberSN-3001-LDO-N01-20
Measurement PrincipleFluorescence Quenching
Measurement Range0–20 mg/L (0–200% saturation)
Output InterfaceRS485 Modbus
Power SupplyDC 10–30V
Current Consumption<50 mA
Operating Temperature0 to 50 °C
Ingress ProtectionIP68
Dimensions (L x W)200 mm x 80 mm
Weight235 g

Frequently Asked Questions

What is the communication protocol of this dissolved oxygen sensor?

This sensor uses a standard RS485 interface with Modbus RTU protocol. This allows for reliable, noise-immune communication over long distances, making it simple to integrate with Programmable Logic Controllers (PLCs), data loggers, SCADA systems, or industrial gateways that support Modbus.

Does this sensor require regular maintenance or electrolyte replacement?

No. As a fluorescence-based optical sensor, it does not consume oxygen or require any electrolytes, membranes, or stirring. This design makes it essentially maintenance-free, requiring only periodic cleaning of the sensor face to ensure accurate readings.

What power supply is needed for the SN-3001-LDO-N01-20 sensor?

The sensor operates from a wide-range DC power supply of 10 to 30 volts. This flexibility allows it to be powered by common 12V or 24V industrial power supplies, battery packs with regulation, or solar-powered systems, simplifying field deployment.

Is this sensor suitable for permanent submersion?

Yes. With its IP68 waterproof rating, the sensor is designed for continuous submersion. It is constructed to withstand the pressures and conditions of being permanently installed in water bodies, tanks, or pipelines for long-term monitoring.

Package Includes

  • 1 x SN-3001-LDO-N01-20 Fluorescence Dissolved Oxygen Sensor
  • 1 x Sensor Connection Cable

Additional Information

Weight 0.235 kg
Dimensions 20 × 8 cm

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