| 品牌 | Kipp Zonen | 型号 | CGR4 |
Kipp & Zonen 的长波辐射计可长时间在任何天气状况下良好使用。带有防水插头的信号电缆便于安装维护。镶嵌其上的白色太阳遮挡环，使传感器热化效应降到。
CGR4是当前可以得到高质量的科学测量数据的辐射计。独特的半月板圆顶设计可以提供180度的测量视角，有很好的余弦响应。圆顶外部的坚硬涂层不仅有利于光谱响应而且可保护硅表面。圆顶设计和优良的耐热材料使仪器本身削减了温度变化及顶部阴影造成的影响。CGR4可以通过添加CV2强之通风罩来提高其测量的准确性。
CGR 4 pyrgeometer is an instrument for the highest quality scientific measurements. The specially designed meniscus dome provides a 180o field of view with negligible directional response error. A hard-carbon coating on the outside of the dome smoothes the spectral response and provides extra protection to the silicon surface. The excellent thermal stability of the dome construction and coupling to the instrument body eliminates the need for dome temperature measurements or dome shading. CGR 4 can be fitted with the CVF 3 ventilation unit to further improve its performance.
A waterproof socket is fitted for the signature yellow signal cable, which is available in a range of lengths pre-wired to the waterproof plug.
The integral bubble level is raised to the top of the housing and can be viewed without removing the redesigned snap-on sun shield, which also covers the connector. The connector with gold-plated contacts allows for easy exchange and re-calibration. The drying cartridge is now a screw-in type that can be simply removed using a coin, for changing the desiccant that is supplied in convenient refill packets.
Product Specification
Spectral range 4500 to 42000 nm
Sensitivity 5 to 10 μV/W/m2
Response time 18 s
Window heating offset < 4 W/m2
Zero offset B < 2 W/m2
Temperature dependence of sensitivity (-20 oC to +50 oC) < 1 %
Operating temperature range -40 to +80 °C
Net irradiance range -250 to + 250 W/m2
Field of view 180 °
Non-linearity < 1 %
