测量原理：

　　雾霾由空气中许多微小的水滴和各种细小颗粒物共同组成。从光源发出的红外光被水滴散射，然后被高灵敏的探测器所检测。在一定的范围内，检测到的水滴或其他微小颗粒越多，散射光强度就越大。通过嵌入式软件计算，将光散射强度转化成标准能见度数值。

　　主要特点：

　　发射和接收单元与控制器单元安装在同一机箱内，体积小、重量轻、结构紧凑，安装调试简单;

　　具有自动检测光学污染度，进行修正和补偿;超出警戒值发出维修报警：

　　直接连续测量

　　无运动部件-维护量小

　　安装调试简单

　　主要技术参数：

　　检测范围：10-2000米

　　测量精度：±5%

　　光源：高亮度红外LED

　　响应时间：1钟

　　数字输出：RS485/232

　　工作温度：-20-50°C

　　工作湿度：0-99%

　　供电电压：VDC 12-24V

　　功耗：5W(带加热10W)

　　外形尺寸：280×150×150 mm(长×宽×高)

　　公司介绍

　　Shandong Jingdao Photoelectric Technology Co., Ltd. is a high-tech enterprise which is committed to the research ａnd development, production, sales ａnd service of agricultural application instruments such as food safety testing instruments ａnd soil nutrient testing instruments. The company is headquartered in Weifang City, Shandong Province. At present, the company has the ability to mass produce a series of automatic meteorological ａnd environmental monitoring stations, all kinds of detection sensors, ａnd maintenance support equipment. The products have been widely used in many fields such as meteorology, forestry, agriculture, scientific research, colleges ａnd universities, ａnd maintain a good customer reputation.