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以下是美國Apogee新型四分量輻射傳感器SN-500凈輻射傳感器的產品中英文介紹：

美國Apogee公司推出的新型四分量凈輻射傳感器SN-500是一款先進的氣象觀測儀器，能夠單獨測量凈輻射的各個分量。該傳感器采用SDI-12輸出，無需多個模擬通道來測量凈輻射的各個分量，極大地簡化了數據采集和處理過程。它包含向上和向下的短波輻射傳感器以及向上和向下的長波輻射傳感器，可分別提供凈輻射的四個分量的測量。每個輻射計都配備單獨的加熱器，通過最大限度地減少露水、霜凍等對過濾器和傳感器頭的影響，從而提高測量精度。此外，SN-500凈輻射傳感器設計緊湊、體積小、重量輕，便于快速簡單地安裝。它適用于多種環境條件，工作溫度范圍為-50至80攝氏度，相對濕度范圍為0至100%。該傳感器可廣泛應用于研究植物光合作用、植物生長、土壤蒸散以及氣象站和地表通量塔的凈輻射測量等領域。

The SN-500 four-component net radiometer from Apogee Instruments is an advanced meteorological observation device that can individually measure the components of net radiation. This sensor features SDI-12 output, eliminating the need for multiple analog channels to measure the components of net radiation, which greatly simplifies the data acquisition and processing process. It includes upward and downward pyranometers as well as upward and downward pyrgeometers to provide separate measurements of the four components of net radiation. Each radiometer is equipped with an individual heater to minimize the impact of dew, frost, etc., on the filter and sensor head, thereby improving measurement accuracy. In addition, the SN-500 net radiometer is designed to be compact, small in size, and light in weight, facilitating quick and easy installation. It is suitable for a variety of environmental conditions, with an operating temperature range of -50 to 80 degrees Celsius and a relative humidity range of 0 to 100%. The sensor can be widely used in the measurement of net radiation at meteorological stations and surface flux towers, as well as in the study of plant photosynthesis, plant growth, and soil evaporation.