TH-SGT1隧道光透过率检测仪是一种用于测量隧道内光线透过率的仪器，它可以反映特定场合中的大气能见度和烟雾浓度。隧道光透过率能见度检测仪的主要作用是监测隧道内的能见度和一氧化碳（CO）浓度情况。由于隧道空间小且相对密闭，车辆排放的废气若不及时合理排放，会造成有害气体和悬浮颗粒物的聚集，直接影响行经隧道的人员安全。因此，这种检测设备对于保障隧道交通安全至关重要。
一、简介
TH-SGT1型便携式光透过率检测仪无需安装调试，通电即可检测，LCD屏上实时显示检测数据。考虑到隧道内恶劣的自然环境，不便于同步连接笔记本电脑来存储数据，仪器内部自带存储器，可以自动保存检测数据，在检测完毕后，将仪器带回实验室，连接电脑，通过光透过率显示软件可以自动将仪器内部存储器上保存的数据导入电脑中，并以EXCEL格式保存，以便客户调阅使用。
二、主要用途
各种大气环境下的大气光透过率
各种大气环境下公路的能见度数值
隧道内VI和CO值的验收检测数值
隧道内环境的温、湿度检测值
三、技术参数
测试范围 | 光透过率（T） | 0-100% |
能见度 （VI） | 1-5000 m |
烟雾浓度 （K） | 0-35*10－3 1/m |
CO浓度 （CO） | 0-300 ppm |
环境温度 | -40℃ － +80℃ |
环境湿度 | 0－100% |
状态显示 | 128*64点阵LCD屏，数字与字符显示 |
测试原理 | 光透射法、数字探头、电化学探头 |
测试误差: | ±2% 光透过率（满量程） |
环境温度 | -30～70摄氏度 |
环境湿度 | 0～100%RH |
通信接口 | RS232 / RS485 / USB |
供电电压 | 交流220V电源适配器（内部自带可充电锂电池，在无外接电源情况下，可连续工作超过10小时） |
数据存储 | 可存储连续70个小时的检测数据 |
检测周期 | 2 s （可根据客户要求定制） |
存储周期 | 10 s （本机内存储） |
整机重量 | 16KG（包括仪器、仪器箱、经纬仪支架） |
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