On request other types as type buz for build in of head transmitters , type bbk plastic connection head or bush for build in of intrinsecally safe head transmitters can be used 根据要求，还可以使用如buz型用于头部式传送器安装bbk型塑料头或bush型用于本质安全头部式传送器的安装。
Electric power projects should make full use of safety evaluation and other modern management approaches to carry out the " three simultaneity " and ensure a safety project at the beginning of construction 电力建设项目应充分利用安全评价等现代安全管理模式，把安全设施“三同时”工作落到实处，确保从源头上建设本质安全型工程。
0ur team has developed reso1ving some disadvantage , which non - - determination transport that traditiona1 ethernet transmi t signals , power on of fie1d device , weak interopration in traditional ethernet , and estab1ishing techno1ogys standards about this e11terprisement . determi - nation and rea1 - - time transport is imp1emented by a fu1l - - dua1 - - way exchange ethernet 在系统设计中解决了一般以太网固有的传输不确定性；现场设备的供电问题；传统以太网设备互可操作性不强；本质安全和远程传输等缺点，制定了相应的企业技术标准。
In nature , the optical fiber liquid height meter is one kind of the optical fiber fluid sensor , and it sufficiently utilizes the principle of the optical fiber sensor , making the examination field no signal of electricity , attaining completely an area no electricity examine , and making the safety supervision system essentially secure explosion proof 光纤液位计本质上是一种光纤液位传感器，它充分利用了光纤传感器的原理，使检测现场无电信号，完全做到罐区无电检测，使光纤传感安全监测系统本质安全防爆。
According to the rule of mine safety regulations , an intrinsically safe pilot circuit with perfect performance for underground motor intelligent protective systems is put forward , which can effectively avoid the phenomenon of self - starting that is caused by the earthing of control lines before starting motors , at the same time , can reliably cut off the switches to ensure the safety of underground production under operation condition no matter what the faults of short circuit , open circuit and earthing in the control circuits happened 根据煤矿安全规程规定设计了性能完善的本质安全型先导电路，起动前它能有效地防止因控制线接地造成自起动现象的发生，而且在运行中无论控制线发生短路、断线还是接地故障，它均能可靠跳闸，确保生产的安全，该先导电路的性能指标达到了国内领先水平。
Construction safety management and construction the safe technique is two basic factors to realizes safety produce target manage . although the safe technique of the continuous changes and improvements can dissolve the safe hidden trouble of the equipments tool gets the blemish with the environmental insecurity in homework appearance , but the safe machine tool in innate character design principle is then further to guarantee homework the employee ' s life safety 施工安全管理与施工安全技术是实现安全生产目标管理的两个基本因素。虽然日新月异的安全技术可以消除设备工具的隐患缺陷和作业环境的不安全状态，而本质安全的机具设计理念则更进一步保障作业员工的生命安全。
In order to ensure the essence safety of hydropower construction project and to promote the health development of hydropower cause , this paper puts forward the future trend of hydropower project cost in china and several management suggestions in combination with the history and status quo of hydropower project cost management and the new situations faced by hydropower construction 为确保水电工程建设项目的本质安全，促进水电事业的健康发展，结合水电工程造价管理的历史、现状以及水电建设面临的新情况，提出了未来我国水电工程造价的走势和若干管理建议。
Therefore , the researches of fiber optical oxygen sensors have gotten attention of people in recent years . fiber optic oxygen sensor have many advantages such as intrinsic safety and high sensitivity , high detection precision , quick response , anti - disturbance of electromagnetism , and it can be used for long - distance , successive and on - line monitoring of the gaseous oxygen and the dissolved oxygen in dangerous environment 由于光纤氧传感器具有本质安全、灵敏度高、检测精度高、响应时间快、不受电磁干扰等优点，并可对危险环境中的气态氧和溶解氧进行远程、连续和在线监控，近年来，其研究受到了人们的极大关注。
The research project in this thesis is " study on measurement and control system for vacuum magnetic switchgear based on intel 80c196kb " , which is a continuation project of " study on measurement and control system for vacuum magnetic swichgear based on plc " and is sponsored by education committee , science and technology committee of shanxi province . the reason why this project is put forward is because the cost of plc measurement and control system is high , and it is not adaptable to large - scale production . the main contents of this project is aimed at solving the key problems of centralized control and integrated protections of high capacity motors used in high yield and efficiency automation coal faces 本文研究的内容是“基于intel80c196kb控制的矿用真空磁力控制站测控系统的研究” ，它是山西省科技攻关项目“基于plc控制的矿用隔爆兼本质安全型组合磁力控制站的研究” (项目编号为no . 20002013 )的后续课题，主要是针对plc控制系统成本高，不利于规模化生产的缺点而提出的，该课题的研究内容主要是解决矿井高产高效综合自动化采煤工作面大型电动机的集中控制和保护等问题。
According to the safety requirements of underground electrical equipment , an excellent intrinsically safe pilot circuit is designed , the fault characteristics and protection principle of asynchronous motor with single speed and double speed used in underground are simultaneously analyzed , the function parameters corresponding to the fault protections for high capacity motors are determined . at the same time , module program design method and compiled monitoring program and function subprograms are emphatically described 根据矿井生产安全要求，设计了性能优良的本质安全型先导电路，分析了单速异步电动机和双速异步电动机的各种故障特征和保护原理，确立了每种故障保护的动作指标，介绍了结构化程序的设计方法，设计了监控程序及各功能模块程序。
