四川成都苏州一光电子经纬仪DT402L带下对点苏光DT302L升级

成都位于中国西南地区，是四川省的省会，拥有丰富的自然资源和深厚的文化底蕴。苏州一光电子经纬仪DT402L是DT302L的升级产品，它在多个方面进行了改进和优化。该仪器采用绝对编码测角系统，最小读数可达1″，测角精度为2″。其望远镜的物镜孔径为45mm，放大倍率为30倍，成像为正像，视场角为1°30′，最短视距为1.0m。仪器还配备了超大屏幕液晶显示，读数方便，操作更易上手。此外，它还具备电子式补偿器，可自动垂直补偿，补偿范围为±3′。其长水准器精度为30″/2mm，圆水准器精度为8′/2mm。仪器使用6V可充镍-氢电池，工作时间长达15小时。它还配备了激光对点器，可通过面板操作，方便快捷。数据接口为RS-232C，方便与其他设备连接。仪器的尺寸为153×175×328mm，重量为4.0kg，工作温度范围为-20℃～+50℃。该仪器可广泛应用于国家和城市的三、四等三角控制测量，铁路、公路、桥梁、水利、矿山等工程测量，建筑、大型设备安装，地籍测量、地形测量等多种工程测量。

English Introduction

Chengdu, the capital of Sichuan Province in Southwest China, is a city rich in natural resources and cultural heritage. The Suzhou Yiguang DT402L electronic theodolite is an upgraded version of the DT302L. It has been improved and optimized in many aspects. The instrument uses an absolute encoding angle measurement system with a minimum reading of 1" and an angle measurement accuracy of 2". The telescope has an objective lens aperture of 45mm, a magnification of 30 times, a positive image, a field of view of 1°30′, and a minimum viewing distance of 1.0m. The instrument is also equipped with a large-screen liquid crystal display, which is easy to read and operate. In addition, it has an electronic compensator that can automatically compensate vertically with a compensation range of ±3′. The precision of the long level vial is 30″/2mm, and the precision of the circular level vial is 8′/2mm. The instrument uses a 6V rechargeable nickel-hydrogen battery with a working time of up to 15 hours. It also has a laser pointer that can be operated through the panel, making it convenient and fast. The data interface is RS-232C, which facilitates connection with other devices. The instrument measures 153×175×328mm in size, weighs 4.0kg, and has a working temperature range of -20℃ to +50℃. The instrument can be widely used in national and urban third and fourth order triangular control surveys, railway, highway, bridge, water conservancy, mining and other engineering surveys, construction, large equipment installation, cadastral surveying, topographic surveying and various other engineering surveys.

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