一、产品概述：

（Product Overview）

 净全辐射表主要用来测量由天空向下投射的和地球表面向上投射的全波辐射量的净差值。同时还可以用来测量短波辐射和短波辐射的反射率；长波辐射和长波辐射的反射率及全波辐射。是研究级的测量净全辐射的理想仪器。测量范围为0.3～3μm的短波辐射和3.5～50μm的长波辐射。长波辐射在物理上与温度有关，并且在地球上所有物体都会发出长波辐射。因此长波辐射内部嵌入了温度补偿，使得探测精度和稳定性有了提升。

工作原理：

净辐射表通过直接测量每日的长波辐射和短波辐射，并计算得到净辐射量，用于大气辐射（云层/水蒸气和二氧化碳等发出的辐射）和地球与大气之间的净辐射交换的气象观测。净长波辐射和地气系统向下的发射辐射可由计算得到。

The PH-2L Net Total Radiometer is mainly used to measure the net difference between the full-wave radiation projected downward from the sky and that projected upward from the earth's surface. It can also be used to measure short-wave radiation and its reflectivity, long-wave radiation and its reflectivity, as well as full-wave radiation. It is an ideal research-grade instrument for measuring net total radiation. The measurement range covers short-wave radiation from 0.3 to 3 μm and long-wave radiation from 3.5 to 50 μm. Physically, long-wave radiation is related to temperature, and all objects on earth emit long-wave radiation. Therefore, temperature compensation is ded in the long-wave radiation measurement, which greatly improves the detection accuracy and stability.

Working Principle:
The net radiometer directly measures daily long-wave and short-wave radiation, and calculates the net radiation amount, which is used for meteorological observations of atmospheric radiation (radiation emitted by clouds/water vapor, carbon dioxide, etc.) and the net radiation exchange between the earth and the atmosphere. The net long-wave radiation and the downward emitted radiation from the earth-atmosphere system can be obtained through calculation.

二、产品特点：

（Product Features）

1、精度高，响应快。

2、全天候，高稳定性。

3、高度集成，易于集成到任何类型的应用中。

4、不是单纯的铂电阻来进行温度补偿，而是代入算法得到。

1、High precision, fast response.

2、All-weather, high stability.

3、Highly integrated and easy to integrate into any type of application.

4、The temperature compensation is not carried out by pure platinum resistance, but by bringing in the algorithm.

三、应用场合：

(Application Scenarios)

  可广泛应用于气象、农林业、建筑科学、道路安全等领域的蒸腾计算、热应力和热平衡的研究、高速公路状态监测。

It can be widely used in the study of transpiration calculation, thermal stress and thermal balance, highway condition monitoring in meteorology, agriculture and forestry, construction science, road safety and other fields.

四、技术指标：

(Technical Specifications)