SKU: SENS-2912
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DFRobot SEN0640 RS485 Photoelectric Solar Radiation Sensor - 0-1800 W/m², IP67 Aluminium Housing

₹7,099.00 (Inclusive of all taxes)
Out of Stock

The DFRobot SEN0640 is a high-precision RS485 solar radiation sensor designed for professional environmental monitoring. It measures solar irradiance from 0 to 1800 W/m² within the 400–1100 nm spectrum and interfaces via Modbus-RTU protocol, making it compatible with industrial PLCs, data loggers, and microcontrollers like Arduino when paired with an RS485-to-UART adapter.

Features

  • Measures solar radiation intensity from 0 to 1800 W/m² with ±5% accuracy.
  • Broad spectral sensitivity range of 400–1100 nm for comprehensive solar energy assessment.
  • Industrial RS485 interface with Modbus-RTU protocol for robust, long-distance communication.
  • Wide operating voltage range of DC 5–30V for flexible system integration.
  • IP67-rated aluminium housing with anti-dust cover ensures durability in harsh outdoor environments.

Out of stock

Description

The DFRobot SEN0640 Photoelectric Solar Radiation Sensor utilizes a high-quality photodiode to convert incident solar energy into an electrical signal proportional to irradiance. Its sensing element is protected by a specially treated, 95% transparent cover that minimizes dust accumulation and maintains measurement accuracy over time. The sensor’s signal is conditioned internally and transmitted via a robust RS485 bus, supporting the Modbus-RTU standard for seamless integration into SCADA, environmental monitoring stations, and renewable energy management systems.

Engineered for continuous outdoor operation, the sensor features a sealed, IP67-rated aluminium enclosure that provides excellent resistance to moisture, dust, and corrosion. With a fast response time of ≤10 seconds and a non-linearity of less than ±2%, it delivers stable, reliable data for critical applications in agriculture, meteorology, and photovoltaic system performance monitoring. The wide DC 5–30V input range allows for direct connection to solar-powered systems or standard industrial power supplies.

Key Features

  • High-precision photoelectric sensing with a measurement range of 0–1800 W/m².
  • Broadband spectral response from 400 nm to 1100 nm, covering key solar energy wavelengths.
  • Industrial-grade RS485 communication with Modbus-RTU protocol for network compatibility.
  • Wide-range DC 5–30V power input, suitable for diverse field deployment scenarios.
  • IP67 protection rating and rugged aluminium housing for all-weather durability.
  • Anti-dust treated optical window maintains high transmittance and measurement consistency.
  • Fast response time (≤10s) enables real-time solar radiation monitoring.
  • Low non-linearity (<±2%) ensures high signal fidelity across the entire measurement range.

Applications

  • Solar photovoltaic (PV) farm performance monitoring and efficiency analysis.
  • Agricultural research and crop growth modeling based on precise solar irradiance data.
  • Professional meteorological stations for weather forecasting and climate research.
  • Greenhouse automation systems to optimize light exposure for plant health.
  • Environmental science studies assessing solar energy impact on ecosystems.

Technical Specifications

Manufacturer Part NumberSEN0640
Measurement Range0–1800 W/m²
Spectral Range400–1100 nm
Accuracy±5%
Resolution1 W/m²
Response Time≤10 s
Non-linearity<±2%
Output InterfaceRS485 (Modbus-RTU)
Power SupplyDC 5–30V
IP RatingIP67
Housing MaterialAluminium
Optical Cover95% Transparent, Anti-dust Treated

Frequently Asked Questions

What is the communication protocol and how do I connect this sensor to an Arduino?

The sensor uses an RS485 interface with the Modbus-RTU protocol. To connect it to an Arduino or other 5V microcontroller, you will need an external RS485-to-UART converter module (such as the DFRobot RS485 Shield). The converter handles the differential signaling and provides a simple serial (TX/RX) connection for your MCU, allowing you to send Modbus commands to read the irradiance data.

What is the spectral range and why is it important for solar measurement?

This sensor is sensitive to wavelengths from 400 nm to 1100 nm. This range covers the majority of the solar spectrum that reaches the Earth's surface, including visible light and near-infrared radiation, which is crucial for accurate assessment of total solar energy available for photovoltaic conversion and plant photosynthesis. It ensures the readings are relevant for both energy generation and agricultural applications.

Can this sensor operate continuously outdoors? What are its environmental limits?

Yes, it is designed for permanent outdoor installation. The IP67-rated aluminium enclosure provides full protection against dust ingress and temporary immersion in water up to 1 meter for 30 minutes. The anti-dust treated optical window helps maintain accuracy by preventing particulate buildup. Ensure the mounting location provides a clear, unobstructed view of the sky for accurate hemispherical measurements.

What is the power requirement and can it be powered directly from a solar panel?

The sensor operates on a wide DC voltage range of 5 to 30 volts. This flexibility allows it to be powered from various sources, including regulated lab power supplies, battery banks, or solar charge controllers. Direct connection to a raw solar panel is not recommended due to voltage fluctuations; a stable power source or a voltage regulator should be used to ensure consistent operation within the specified range.

Package Includes

  • 1 x RS485 Photoelectric Solar Radiation Sensor (SEN0640)
  • 1 x Adapter Cable
  • 1 x Screw Package for mounting

Additional Information

Weight 0.367 kg
Dimensions 21 × 16 × 11 cm