DIN 42557-1949 变压器用油--空气冷却器

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【英文标准名称】:StandardforIntrusion-DetectionUnits
【原文标准名称】:侵入探测装置标准
【标准号】:ANSI/UL639-2007
【标准状态】:作废
【国别】:美国
【发布日期】:2007-08-31
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:警报系统;防盗警报;控制电路;移动式探测器;检波器(回路);电气元件;荧光屏
【英文主题词】:Alarmsystems;Burglaralarms;Controlcircuits;Detectorofmotion;Detectors(circuits);Electricalcomponents;Screens
【摘要】:Thisstandardcoversintrusion-detectionunitsintendedtobeusedinburglary-protectionsignalingsystems.Theseunitsareintendedtobeusedinindoororoutdoorlocationstoautomaticallyindicatethepresenceofanintruderbyactuatingelectricalcontrolcircuits.
【中国标准分类号】:A91
【国际标准分类号】:13_310
【页数】:
【正文语种】:英语


Product Code:SAE J1058
Title:Standard Sheet Steel Thickness
Issuing Committee:Sheet And Strip Steel Committee
Scope:This SAE Recommended Practice provides an orderly series for designating the thickness of unocated and coated hot-rolled and cold-rolled sheet and strip. This document also provides methods for specifying thickness tolerances.Requirements of industry permit leeway in the choice of thickness in some instances, but it is recognized that for many applications, particularly the tonnage requirements of the mass production industries, thickness is normally determined by critical engineering design or manufacturing considerations. However, for general applications or where requirements permit some latitude in the selection of thickness, the preferred thickness given in Table 1 will facilitate interchangeability of different metals in design, reduce inventory, and increase the availability in warehouse stocks of thicknesses commonly required for general applications.All of the thicknesses listed are not necessarily produced in all metals and grades. Producers or distributors must be consulted to determine availability of a particular thickness for a given metal product.