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荷蘭Kipp&Zonen公司的CMP21太陽總輻射傳感器是一款高性能的科研級儀器，廣泛應用于氣象網絡和極端惡劣環境下的太陽輻射測量。該傳感器采用高質量的黑化熱電堆作為探測器，被兩層玻璃穹頂罩保護，能夠測量整個太陽光譜范圍內的太陽輻射。其光譜波長范圍為285~2800nm，靈敏度為7~14μV/W/m²，最大輻射強度可達4000W/m²。CMP21具有優秀的溫度補償特性，內置熱敏電阻可進行單獨優化的溫度補償，確保在-20℃~50℃的溫度范圍內，靈敏度的溫度依賴性小于1%。此外，其響應時間短，95%的響應時間小于5秒，方向誤差和非線性誤差均小于0.2%，能夠提供高精度的測量結果。該傳感器還配備了集成氣泡水平儀和可調水平螺釘，便于安裝和調平。其防護等級達到IP67，可在-40℃~80℃的極端環境下穩定工作。

The CMP21 solar radiation sensor, manufactured by Kipp&Zonen, is a high-performance research-grade instrument widely used in meteorological networks and extreme environments for solar radiation measurement. It features a high-quality blackened thermopile detector protected by two glass domes, capable of measuring solar radiation across the full solar spectrum. The sensor has a spectral range of 285 to 2800 nm, with a sensitivity of 7 to 14 µV/W/m² and a maximum irradiance capacity of 4000 W/m². The CMP21 is equipped with an internal thermistor for individually optimized temperature compensation, ensuring that the temperature dependence of sensitivity remains below 1% within the -20°C to 50°C range. Additionally, it offers fast response times, with 95% of the final value achieved in less than 5 seconds, and low directional and non-linearity errors, both below 0.2%, to provide highly accurate measurements. The sensor also includes an integrated bubble level and adjustable leveling screws for easy installation and leveling. With an IP67 protection rating, the CMP21 can operate reliably in extreme temperatures ranging from -40°C to 80°C.