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Thermal type solar intensity sensor delivers accurate measurement of solar irradiance within the 0-2000W/m² range and the 0.3-3μm spectral band. It features a high-sensitivity thermopile element with temperature compensation for fast, stable response, paired with a 95% light-transmission quartz cover to minimize environmental interference. Designed for outdoor reliability, radiation sensor operates from −40°C to +60°C and uses an IP67 all-aluminum enclosure for strong resistance to rain, snow, oxidation, and harsh climates. With RS485 Modbus output, it provides dependable performance for meteorology, solar power monitoring, environmental research, and radiation assessment applications.
A thermal-type sensor measures solar radiation by converting absorbed sunlight into a temperature difference, which is then translated into an electrical signal. This method provides a direct measurement of total solar energy.
It uses a thermopile sensing element that absorbs solar radiation. The absorbed energy generates a temperature gradient across the thermopile, producing a voltage output proportional to the solar intensity.
Thermal sensors offer high stability, wide spectral response, and accurate readings regardless of light angle or wavelength. They are also less affected by spectral variations and cloud conditions compared to photodiode-based sensors.
