【英文标准名称】:StandardTestMethodforEqualArmBalances
【原文标准名称】:等臂天平的标准试验方法
【标准号】:ASTME1270-1988(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1988
【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】:E41.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Accessoryreadingdevices;Amplitude;Balances;Beamdeflection;Calibration--laboratoryanalysisinstrumentation;Chainweight;Dampingratio;Electricaltransducers;Electromagneticforcecells;Laboratoryapparatus--specifications;Lever-armratio;Line
【摘要】:Thistestmethodshouldenabletheuserofthebalancetointerpretdatadeterminedthereonintermsofaccuracyandprecision.Itshouldbehelpfulinusingaparticularinstrumenttobestadvantage.Weaknessesaswellasstrengthsshouldbecomeapparent.Itisnottheintentionofthistestmethodtocomparesimilarinstrumentsofdifferentmanufacturebutrathertoassistinchoosinganinstrumentwhichwillmeettheneedsoftheuser.1.1Thistestmethodcanbeusedfortestingequal-armbalancesofanycapacityandsensitivity.Thetestingprocedureshouldenabletheusertocharacterizehisinstrumentsufficientlytodeterminewhetherornotitissuitableforthepurposeforwhichitistobeused.1.2Thecharacteristicstobeexaminedinclude:1.2.1Sensitivityatallloads,1.2.2Leverarmratio,1.2.3Dampingratio(forinstrumentswithoutaccessorydampers),1.2.4Periodofoscillation,1.2.5Precision,and1.2.6Linearityandcalibrationofaccessorydevicesthatprovideon-scaleindicationofweight.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcernsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N13
【国际标准分类号】:
【页数】:6P.;A4
【正文语种】:英语


【英文标准名称】:Vacuumtechnology-Standardmethodsformeasuringvacuum-pumpperformance-Part1:generaldescription.
【原文标准名称】:真空技术.测量真空泵性能的标准方法.第1部分:通用描述
【标准号】:NFX10-510-1-2012
【标准状态】:现行
【国别】:法国
【发布日期】:2012-07-01
【实施或试行日期】:2012-07-27
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:定义(术语);效率;流量测量;流量率;总论;测量;测量技术;性能;泵;试验;真空工程;真空泵
【英文主题词】:Definitions;Efficiency;Flowmeasurements;Flowrates;Generalsection;Measurement;Measuringtechniques;Properties;Pumps;Testing;Vacuumengineering;Vacuumpumps
【摘要】:
【中国标准分类号】:J78
【国际标准分类号】:23_160
【页数】:34P;A4
【正文语种】:其他