EN 45544-4-1999 工作场所空气.有毒气体和蒸气的直接浓度测量和直接检测用的电气装置.第4部分:选择、安装、使用和维修指南
时间:2024-05-09 14:05:27 来源: 标准资料网 作者：标准资料网 阅读：9820
【英文标准名称】:Workplaceatmospheres-Electricalapparatususedforthedirectdetectionanddirectconcentrationmeasurementoftoxicgasesandvapours-Part4:Guideforselection,installation,useandmaintenance;GermanversionEN45544-4:1999
【原文标准名称】:工作场所空气.有毒气体和蒸气的直接浓度测量和直接检测用的电气装置.第4部分:选择、安装、使用和维修指南
【标准号】:EN45544-4-1999
【标准状态】:现行
【国别】:
【发布日期】:2000-10
【实施或试行日期】:2000-10-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:有毒气体;气体检测器;浓缩;安装;危害;工作地点;人类工效学;选择;毒素;规范(验收);检波器(回路);装置;使用条件;极限(数学);维修;定义;定义;指导手册
【英文主题词】:Concentration;Definition;Definitions;Detectors(circuits);Ergonomics;Gasdetectors;Guidebooks;Hazards;Installations;Limits(mathematics);Maintenance;Operatingconditions;Selection;Specification(approval);Toxicgases;Toxins;Workingplaces
【摘要】:
【中国标准分类号】:C70
【国际标准分类号】:13_040_30;13_320
【页数】:43P.;A4
【正文语种】:英语
Product Code:SAE J2271
Title:Ship Systems and Equipment--Part Standard for Studs--Continuous and Double End (Inch Series)
Issuing Committee:Ship Systems - Fasteners Committee
Scope:This SAE Parts Standard provides dimensional and quality assurance requirements for studs in the followingconfigurations in standard materials used for ship system applications:a. Continuous thread studs in UNRC and 8UNR series in the following threads and diameters:驴 UNRC threads (0.190 through 4 inches)驴 UNRF threads (0.190 through 1-1/2 inches)驴 8UNR threads (1-1/8 through 4 inches)b. Double end studs (clamping type) where both ends are of the same thread length in the following threads anddiameters:驴 UNRC threads (1/4 through 4 inches)驴 UNRF threads (1/4 through 1-1/2 inches)驴 8UNR threads (1-1/8 through 4 inches)c. Double end studs (tap end type) where the tap end thread length is equivalent to 1-1/2 nominal diameters:驴 NC-5 interference-fit tap end thread with UNRC, UNRF or 8UN nut end threads (1/4 through 1-1/2 inches)驴 UNRC and 8 UN threads both ends (1/4 through 4 inches)驴 UNRC threads both ends (1/4 through 1-1/2 inches)A complete metric companion to this document is provided in SAE J2271M, therefore no metric equivalents are presented.These studs are primarily or use in ship systems and equipment. The continuous thread studs and the constant strength double end studs are configurations particularly suited to applications which are subject to high shock requirements.