SKU: SENS-0317
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Desun Uniwill DS502 BOD Sensor, 0-1000mg/l, RS485 MODBUS Output, SS316/Titanium, IP68

₹173,399.00 (Inclusive of all taxes)
Out of Stock

The Desun Uniwill DS502 is a reagent-free Biochemical Oxygen Demand (BOD) sensor utilizing UV245nm absorption technology for real-time water quality monitoring. Featuring RS485 MODBUS RTU output, it integrates directly with industrial PLCs, SCADA systems, and data loggers. Its SS316/Titanium alloy body and IP68 rating ensure reliable, continuous operation in harsh aquatic environments.

Features

  • UV245nm optical sensing for reagent-free BOD measurement (0–1000 mg/L).
  • RS485 MODBUS RTU output for seamless industrial system integration.
  • Corrosion-resistant SS316/Titanium alloy housing with IP68 waterproof rating.
  • Automatic turbidity compensation for high-accuracy, stable readings (±3–5%).
  • Low-power operation (DC 6–12V, <10mA) suitable for remote monitoring.

Out of stock

Description

The DS502 BOD sensor employs UV absorption at 245nm to directly measure Biochemical Oxygen Demand without the need for chemical reagents or sample preparation. This optical method, combined with automatic turbidity compensation, provides accurate, real-time data for continuous water quality assessment. The sensor’s robust construction is engineered for demanding applications.

Designed for permanent immersion, the sensor features a fully sealed, corrosion-resistant body capable of withstanding prolonged exposure to sewage, industrial effluent, and saline environments. Its MODBUS RTU communication protocol allows for straightforward daisy-chaining and integration into existing monitoring networks, providing a reliable and low-maintenance solution for environmental and process control.

Key Features

  • Reagent-Free UV Sensing: Utilizes UV245nm absorption technology for direct BOD measurement, eliminating ongoing reagent costs and waste.
  • Industrial Communication: Standard RS485 interface with MODBUS RTU protocol ensures compatibility with PLCs, SCADA, and data acquisition systems.
  • Robust Environmental Sealing: IP68-rated SS316/Titanium alloy housing provides exceptional corrosion resistance and long-term durability in submerged applications.
  • Advanced Signal Conditioning: Integrated automatic turbidity compensation maintains measurement accuracy in varying water clarity conditions.
  • Optimized for Continuous Duty: Designed for 24/7 online monitoring with stable performance and minimal drift over extended periods.
  • Low Power Consumption: Operates on a wide DC 6–12V supply with current draw under 10mA, ideal for solar-powered or remote installations.
  • Precision Calibration: Supports a 2-point calibration method for establishing high accuracy across the full measurement range.

Applications

  • Continuous online BOD monitoring in municipal wastewater treatment plants and sewage networks.
  • Effluent quality control and compliance monitoring for industrial discharge points (e.g., chemical, pharmaceutical, food & beverage).
  • Aquaculture and fishery water quality management to monitor organic load and prevent anoxic conditions.
  • Environmental monitoring of rivers, lakes, and reservoirs for ecological assessment and pollution tracking.
  • Integration into smart water management systems and IoT-based environmental sensing networks.

Technical Specifications

Model NumberDS502
Measurement Range0–1000 mg/L BOD
Output SignalRS485 (MODBUS RTU Protocol)
Accuracy±3–5%
Resolution0.01 mg/L
Power SupplyDC 6–12V
Operating Current< 10 mA
Housing MaterialSS316 / Titanium Alloy
Ingress ProtectionIP68
Calibration2-point method
Cable Length5 meters
Sensor Diameter46 mm
Sensor Length234 mm
Sensor Weight1200 g

Frequently Asked Questions

What is the operating principle of the DS502 BOD sensor?

The DS502 utilizes UV absorption spectroscopy at 245nm to measure Biochemical Oxygen Demand (BOD) directly in the water column. This optical method correlates UV light absorption by organic compounds to BOD levels, eliminating the need for chemical reagents and providing real-time, continuous data without sample extraction.

How do I communicate with and wire the DS502 sensor?

The sensor communicates via a standard RS485 interface using the MODBUS RTU protocol. Connect the sensor's cable to your PLC, data logger, or RS485-to-USB converter using the A/B data lines and the provided DC 6–12V power supply. Ensure proper termination and baud rate configuration (typically 9600 or 19200) in your host system for reliable data polling.

Is the DS502 suitable for permanent submersion in harsh water?

Yes, the sensor is specifically designed for permanent immersion. Its SS316/Titanium alloy housing provides excellent corrosion resistance against sewage, saltwater, and industrial chemicals. The IP68 waterproof rating guarantees protection against continuous submersion, making it ideal for direct installation in outfalls, tanks, and open water bodies.

How often does the DS502 sensor require calibration?

Initial calibration using the 2-point method is required. For optimal accuracy, periodic recalibration is recommended, typically every 3 to 6 months, depending on the application's fouling potential and required data precision. The sensor's automatic turbidity compensation helps maintain stability between calibrations.

Package Includes

  • 1 x Desun Uniwill DS502 BOD Sensor (0-1000mg/l, RS485 Output)
  • 1 x 5-meter integral connection cable

Additional Information

Weight 1.2 kg