The CMP3 Pyranometer, manufactured by Kipp & Zonen, has replaced the CM3 Pyranometer. The CMP3 is an ISO second class pyranometer that measures solar radiation with a high-quality blackened thermopile protected by a dome. The blackened thermopile provides a flat spectral response for the 310 to 2800 nm spectral range, which allows the CMP3 to be used under plant canopies or lamps, when the sky is cloudy, and for reflected radiation measurements. The CMP3 features a white, snap-on, sun shield that reduces the sensor’s temperature. A bubble level and three adjusting screws are provided for leveling the sensor. To make a low-cost albedometer, customers can mount two CMP3s back-to-back.

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