MIL-PRF-5480G
作者:标准资料网 时间:2024-05-07 05:00:06 浏览:8963
来源:标准资料网
MIL-PRF-5480G, PERFORMANCE SPECIFICATION, DATA, ENGINEERING AND TECHNICAL REPRODUCTION (1 JUL 1998)., This specification covers the requirements for the production, preparation for delivery, and shipment of non-digital reproducible and nonreproducible reproductions of drawings, associated lists, and related engineering and technical data. The original documents from which these reproductions are produced may be manually or computer generated and are not addressed by this specification. For the purposes of this specification, the direct output from a digital source is considered the original from which non-digital reproductions meeting the requirements herein are produced.
基本信息
标准名称: | 旋光标准石英管 |
英文名称: | Quartz Control Plate |
中标分类: |
综合 >>
计量 >>
光学计量 |
发布部门: | 国家技术监督局 |
发布日期: | 1994-01-06 |
实施日期: | 1994-06-01 |
首发日期: | |
作废日期: | |
归口单位: | 中国计量科学研究院 |
起草单位: | 中国计量科学研究院 |
起草人: | 侯丽健 |
出版社: | 中国计量出版社 |
出版日期: | 2004-04-22 |
页数: | 10页 |
书号: | 155026-1500 |
适用范围
本规程适用于新制造、使用中和修理后的支撑外径为30mm的旋光标准石英管的检定。
前言
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目录
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引用标准
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所属分类: 综合 计量 光学计量
【英文标准名称】:StandardTestMethodsforLeaksUsingtheMassSpectrometerLeakDetectorintheDetectorProbeMode
【原文标准名称】:探测器探针方式用质谱仪检漏器检漏的试验方法
【标准号】:ASTME499-1995(2006)
【标准状态】:现行
【国别】:
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E07.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;无损检验;检漏器;探测器;探测器;泄漏;质谱仪
【英文主题词】:belljarleaktest;bombmassspectrometerleaktest;heliumleaktest;heliumleaktesting;leaktesting;massspectrometerleaktesting;sealedobjectmassspectrometerleaktest
【摘要】:TestMethodAisfrequentlyusedtotestlargesystemsandcomplexpipinginstallationsthatcanbefilledwithatracegas.Heliumisnormallyused.Thetestmethodisusedtolocateleaksbutcannotbeusedtoquantifyexceptforapproximation.Caremustbetakentoprovidesufficientventilationtopreventincreasingtheheliumbackgroundatthetestsite.Resultsarelimitedbytheheliumbackgroundandthepercentageoftheleakingtracegascapturedbytheprobe.TestMethodBisusedtoincreasetheconcentrationoftracegascomingthroughtheleakbycapturingitwithinanenclosureuntilthesignalabovetheheliumbackgroundcanbedetected.Byintroducingacalibratedleakintothesamevolumeforarecordedtimeinterval,leakratescanbemeasured.1.1Thesetestmethodscoverproceduresfortestingandlocatingthesourcesofgasleakingattherateof4.5x1013mol/s(1x108Stdcm3/s)orgreater.Thetestmaybeconductedonanydeviceorcomponentacrosswhichapressuredifferentialofheliumorothersuitabletracergasmaybecreated,andonwhichtheeffluentsideoftheleaktobetestedisaccessibleforprobingwiththemassspectrometersamplingprobe.1.2Twotestmethodsaredescribed:1.2.1TestMethodA-Directprobing,and1.2.2TestMethodB-Accumulation.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:19_100
【页数】:6P.;A4
【正文语种】: