DFRobot
RS485 Photoelectric Solar Radiation Sensor (400-1100nm)
· MPN: SEN0640
The RS485 Photoelectric Solar Radiation Sensor is designed for precise solar radiation measurement within the 400-1100nm spectral range. Utilizing the...
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The RS485 Photoelectric Solar Radiation Sensor is designed for precise solar radiation measurement within the 400-1100nm spectral range. Utilizing the photoelectric principle, it converts sunlight into electrical signals with high accuracy. Equipped with a highly sensitive photosensitive element and a wide-spectrum absorption range, this sensor ensures reliable solar radiation measurements.
To maintain accuracy, the sensor features an integrated dust cover with up to 95% transmittance, minimizing environmental interference. It supports a wide operating voltage range of DC 5-30V and communicates via Modbus-RTU over RS485, making it an excellent choice for integration with Arduino and other systems.
Key Features
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Wide Voltage Support: Operates on DC 5-30V, ensuring compatibility with various applications.
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High Sensitivity & Broad Spectrum Coverage: Measures across 400-1100nm with high precision.
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Durable & Weather-Resistant: Housed in a rugged aluminum shell with IP67 protection for outdoor use.
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Integrated Dust Cover: Reduces dust accumulation and maintains long-term measurement stability.
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RS485 Modbus-RTU Communication: Enables seamless integration with industrial and research systems.
Applications
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Crop Growth Monitoring: Optimize agricultural practices by measuring solar radiation.
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Photovoltaic Systems: Monitor solar energy input for efficient power generation.
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Meteorological Monitoring: Collect solar radiation data for weather analysis.
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Plant Physiology Research: Study sunlight’s effects on plant growth.
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Environmental Protection: Assess solar radiation for ecological research and conservation.
Specifications
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Power Supply: DC 5-30V
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Working Current: <10mA
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Output Mode: RS485
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Measurement Range: 0-1800W/m²
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Wavelength Range: 400-1100nm
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Accuracy: ±5%
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Resolution: 1W/m²
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Response Time: ≤10s
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Non-Linearity: <±2%
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Annual Stability: ≤±2%
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Cosine Response: ≤±10%
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Operating Temperature: -25°C to +60°C
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Protection Level: IP67
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Sensor Cable Length: 20cm
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Adapter Cable Length: 70cm
Shipping List
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RS485 Photoelectric Solar Radiation Sensor x1
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Adapter Cable x1
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Screw Package x1
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- IP67
- An ingress protection rating meaning the enclosure is dust-tight and can survive temporary immersion in water under specified test conditions. This matters when choosing a sensor for outdoor, wet, or wash-down environments.
- Modbus
- Modbus is an industrial communication protocol used by many meters, sensors, PLCs and automation devices. When a product lists Modbus support, it is generally easier to integrate with existing industrial equipment that speaks the same protocol.
- ModBus-RTU
- ModBus-RTU is a common industrial protocol for sending readings and control commands over serial links such as RS485. Knowing a device uses ModBus-RTU helps you choose software libraries, data loggers, or controllers that can request and interpret its data.
- RS485
- RS485 is a robust differential serial communication standard often used in factories, farms and buildings where cables may be long or electrically noisy, and it can link many devices on a single pair of wires. When a product lists RS485, it can communicate with industrial sensors, meters and control equipment over longer distances than typical hobby serial wiring.
- Transmittance
- Transmittance is the fraction of light that passes through a material or layer rather than being absorbed or reflected, usually given as a percentage. A higher transmittance means more light gets through, which can produce a brighter or clearer result for the same light source.
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