以下是美国Apogee新型四分量辐射传感器SN-500净辐射传感器的产品中英文介绍：

美国Apogee公司推出的新型四分量净辐射传感器SN-500是一款先进的气象观测仪器，能够单独测量净辐射的各个分量。该传感器采用SDI-12输出，无需多个模拟通道来测量净辐射的各个分量，极大地简化了数据采集和处理过程。它包含向上和向下的短波辐射传感器以及向上和向下的长波辐射传感器，可分别提供净辐射的四个分量的测量。每个辐射计都配备单独的加热器，通过最大限度地减少露水、霜冻等对过滤器和传感器头的影响，从而提高测量精度。此外，SN-500净辐射传感器设计紧凑、体积小、重量轻，便于快速简单地安装。它适用于多种环境条件，工作温度范围为-50至80摄氏度，相对湿度范围为0至100%。该传感器可广泛应用于研究植物光合作用、植物生长、土壤蒸散以及气象站和地表通量塔的净辐射测量等领域。

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.