Description
3S-IS – Irradiance Sensor with Modbus RTU Output
The 3S-IS series are high-precision irradiance sensors designed for solar PV plants. They measure solar irradiance and cell temperature, providing accurate data via Modbus RTU (RS485) for integration with PLCs, SCADA systems, or dataloggers. The sensors come ready-to-use with a mounting bracket and UV-protected cable.
Key Features:
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Reference Cell: Monocrystalline Silicon (31 × 31 mm)
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Irradiance Range: 0–1600 W/m² | Uncertainty: ≤1% (Class A, IEC 61724-1)
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Resolution: 0.1 W/m² | Response Time: 1 second
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Field of View: >160° | Tilt-Azimuth Accuracy: ≤1°
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Drift: <0.3% per year
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Power Supply: 12–30 V DC | Power Consumption: 30 mA max
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Output: RS485, Modbus RTU, 1 reading/sec
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Operating Range: -40°C to +85°C, 0–100% RH
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Housing: Aluminum, IP54 (IP65/IP68 optional)
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Dimensions: 140 × 110 × 42 mm | Weight: 0.3 kg
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Calibration: Class AAA Sun Simulator, IEC 60904-2 & 60904-4, tested under natural sunlight
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Warranty: 5 years
Models & External Sensor Options:
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3S-IS: No external sensors
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3S-IS-1: Ambient or Module Temperature Sensor
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3S-IS-2 / 3S-IS-2T: Temp + Wind Speed Sensor
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3S-IS-3 / 3S-IS-4 / 3S-IS-5: Temp, Wind Speed, Wind Direction, Relative Humidity (varies by model)
Why Choose 3S-IS?
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Class A accuracy for reliable PV performance monitoring
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Fast 1-second response for real-time analysis
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Plug-and-play installation with UV-protected cable
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Can act as a hub for connecting multiple environmental sensors
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Compatible with major datalogger brands including SMA, Huawei, SolarEdge, GoodWe, and more
Applications:
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Accurate irradiance monitoring for PV plants
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Integration into SCADA or data acquisition systems
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Performance Ratio (PR) calculation and energy yield analysis
