Accurate water level measurement in nuclear reactors,particularly in PWRs(pressurized water reactors)and BWRs(boiling water reactors),is essential for ensuring the safety and efficiency of reactor operations.K-type HJ...Accurate water level measurement in nuclear reactors,particularly in PWRs(pressurized water reactors)and BWRs(boiling water reactors),is essential for ensuring the safety and efficiency of reactor operations.K-type HJTCs(heated junction thermocouples)are widely used for this purpose due to their ability to withstand extreme temperatures and radiation conditions.This article explores the role of HJTCs in reactor water level measurement and compares the performance of 2-wire and 3-wire connections.While the 2-wire connection is simple and cost-effective,it can introduce measurement inaccuracies due to wire resistance.In contrast,the 3-wire connection compensates for lead resistance,offering more precise and reliable measurements,particularly in long-distance applications.This paper discusses the operational considerations of these wiring configurations in the context of nuclear reactors and highlights the importance of choosing the appropriate connection type to optimize safety and measurement accuracy in PWR and BWR reactors.展开更多
家庭安防终端是住宅小区智能化建设中的一个重要环节。安防终端以AVR单片机(Micro-programmed Control Unit,MCU)作为控制核心,以1-wire单总线器件作为访问控制,在终端和控制器中间利用无线通信传送数据。经过实际测试,终端可以在室内15...家庭安防终端是住宅小区智能化建设中的一个重要环节。安防终端以AVR单片机(Micro-programmed Control Unit,MCU)作为控制核心,以1-wire单总线器件作为访问控制,在终端和控制器中间利用无线通信传送数据。经过实际测试,终端可以在室内15m范围内与控制器进行稳定的无线数据通信,能支持室内移动操作。展开更多
文摘Accurate water level measurement in nuclear reactors,particularly in PWRs(pressurized water reactors)and BWRs(boiling water reactors),is essential for ensuring the safety and efficiency of reactor operations.K-type HJTCs(heated junction thermocouples)are widely used for this purpose due to their ability to withstand extreme temperatures and radiation conditions.This article explores the role of HJTCs in reactor water level measurement and compares the performance of 2-wire and 3-wire connections.While the 2-wire connection is simple and cost-effective,it can introduce measurement inaccuracies due to wire resistance.In contrast,the 3-wire connection compensates for lead resistance,offering more precise and reliable measurements,particularly in long-distance applications.This paper discusses the operational considerations of these wiring configurations in the context of nuclear reactors and highlights the importance of choosing the appropriate connection type to optimize safety and measurement accuracy in PWR and BWR reactors.
文摘家庭安防终端是住宅小区智能化建设中的一个重要环节。安防终端以AVR单片机(Micro-programmed Control Unit,MCU)作为控制核心,以1-wire单总线器件作为访问控制,在终端和控制器中间利用无线通信传送数据。经过实际测试,终端可以在室内15m范围内与控制器进行稳定的无线数据通信,能支持室内移动操作。
基金国家高技术研究发展计划( 863)( the National High- Tech Research and Development Plan of China under Grant No.2006AA02Z499)兰州交通大学校科研基金( the Science Research Foundation of Lanzhou Jiaotong Uiversity)
