荷兰Kipp&Zonen公司的CMP21太阳总辐射传感器是一款高性能的科研级仪器，广泛应用于气象网络和极端恶劣环境下的太阳辐射测量。该传感器采用高质量的黑化热电堆作为探测器，被两层玻璃穹顶罩保护，能够测量整个太阳光谱范围内的太阳辐射。其光谱波长范围为285~2800nm，灵敏度为7~14μV/W/m²，最大辐射强度可达4000W/m²。CMP21具有优秀的温度补偿特性，内置热敏电阻可进行单独优化的温度补偿，确保在-20℃~50℃的温度范围内，灵敏度的温度依赖性小于1%。此外，其响应时间短，95%的响应时间小于5秒，方向误差和非线性误差均小于0.2%，能够提供高精度的测量结果。该传感器还配备了集成气泡水平仪和可调水平螺钉，便于安装和调平。其防护等级达到IP67，可在-40℃~80℃的极端环境下稳定工作。

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.