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JJG 929-1998 数显测高仪

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基本信息
标准名称:数显测高仪
英文名称:Verification Regulation of Digital Display Height Mearsuring Instrument
中标分类: 综合 >> 计量 >> 长度计量
发布部门:国家技术监督局
发布日期:
实施日期:1991-08-10
首发日期:
作废日期:
归口单位:四川省技术监督局
起草单位:中国科学院光电技术研究所
起草人:范天泉、陆德基
出版社:中国计量出版社
出版日期:2004-04-22
页数:12页
书号:155026-1031
适用范围

本规程适用于新制造、使用中和修理后的分辨力0.1μm至1μm、量程至1.5m的数显测高仪的检定。

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所属分类: 综合 计量 长度计量
【英文标准名称】:Methodsoftestingcement-Part9:Heatofhydration-Semi-adiabaticmethod
【原文标准名称】:测试水泥的方法.水合热.半绝热法
【标准号】:BSEN196-9-2003
【标准状态】:作废
【国别】:英国
【发布日期】:2004-02-16
【实施或试行日期】:2004-02-16
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数学计算;建筑;施工材料;粘合剂;试验;水合热;水合热;试验报告;水合作用;化学分析和试验;热容;试验设备;分析方法;绝热的;热量计;试验溶液;水泥;溶液;溶解热;测量
【英文主题词】:Adiabatic;Bindingagents;Calorimeters;Cements;Chemicalanalysisandtesting;Construction;Constructionmaterials;Heatcapacity;Heatofhydration;Heatofsolution;Hydration;Hydrationheat;Mathematicalcalculations;Measurement;Methodsofanalysis;Solutions;Testequipment;Testreports;Testsolutions;Testing
【摘要】:ThisEuropeanStandarddescribesamethodofmeasuringtheheatofhydrationofcementsbymeansofsemi-adiabaticcalorimetry,alsoknownastheLangavantmethod.Theaimofthetestisthecontinuousmeasurementoftheheatofhydrationofcementduringthefirstfewdays.Theheatofhydrationisexpressedinjoulespergramofcement.Thisstandardisapplicabletoallcementsandhydraulicbinders,whatevertheirchemicalcomposition,withtheexceptionofquick-settingcements.NOTE1Analternativeprocedure,calledthesolutionmethod,isdescribedinEN196-8.Eitherprocedurecanbeusedindependently.NOTE2Ithasbeendemonstratedthatthebestcorrelationbetweenthetwomethodsisobtainedat41hforthesemi-adiabaticmethod(EN196-9)comparedwith7daysfortheheatofsolutionmethod(EN196-8).
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:24P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodsforStandardizationandCalibrationofIn-LineDryLumberMoistureMeters
【原文标准名称】:直列式干木湿度计的标准化和校准的标准试验方法
【标准号】:ASTMD6782-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D07.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:校正;木材;仪表;潮气;试验方法;木
【英文主题词】:in-linemoisturemeter;moisturecontent;moisturemeters;wood
【摘要】:In-linemetersprovidearapidmeansofdetectingmoisturecontentoflumberorwoodproductsinprocessing(thatis,onacontinuousproductionline).Twomajorusesaremonitoringtheperformanceofthedryingprocess(airdrying,kilndrying),andprovidingsortingoridentificationofmaterialatpredeterminedlevelsofmoisturecontent.Thesemeasurementsareinferentialinthesensethatphysicalmeasurementsaremadeandcomparedagainstcalibrationcurvestoobtainanindirectmeasureofmoisturecontent.Thesemeasurementsmaybeinfluencedbyoneormorephysicalpropertiessuchasactualmoisturecontent(averageandgradient;seeAppendixX5),density,surfacemoisture,chemicalcomposition,size,andtemperatureofwood.Inaddition,themeasurementsmayalsobeinfluencedbyenvironmentalconditionsandthedesignspecificationsofthemeter.Thebestperformanceisobtainedbyanawarenessoftheeffectofeachparameteronthemeteroutputandcorrectionofreadingsasspecifiedbythesetestmethods.Thetwomajoranticipatedusersofthesetestmethodsareinstrumentmanufacturerswhoseprimaryconcernislaboratorystandardizationandcalibration,andinstrumentownerswhomayhaveaprimaryfocusonfieldstandardizationandcalibration.Thesetestmethodspresentthelaboratoryandthefieldasseparatetracks(seeAppendixX2).4.2.1LaboratoryStandardizationandCalibration8212;Thisportionofthesetestmethodsisintendedforguidanceofequipmentmanufacturers.Specifictestrecommendationsaretailoredtothecapabilitiesofalaboratoryenvironment.4.2.2FieldStandardizationandCalibration8212;Thepredominantuseofin-linemetersisinproductioninwhichlumbercharacteristicsandenvironmentalconditionsreflectactualmillprocesses.Fieldstandardizationandcalibrationisessentialtoaddressorencompassmuchofthevariabilityinproduction.4.2.3Applicationsusingtheoutputofthein-linemoisturemetermaymodifythemeteroutputsignalsorhaveinherentresponsecharacteristicsthatarenotrepresentativeofthemeter.1.1Thesetestmethodsapplytoinstrumentsdesignedtodetect,ormeasure,moistureinwoodwhichhasbeendriedbelowthefibersaturationpoint.Thepurposeofthesetestsistoprovideaunifiedstandardagainstwhichsuchsystemscandemonstratetheirsuitabilityfortheirintendeduse(seeAppendixX1).1.2Thestandardisconfiguredtosupporttestsbymoisturemetermanufacturersaswellasend-usersofsuchsystems,thereforethetextfollowstwotracks(seeAppendixX2).1.3Testmethodsspecifiedformanufacturersaregenerallydesignedforlaboratorysettingsandareintendedtoprovideastandardagainstwhichamanufacturercertifiescalibrationandgeneralsystemconformance.1.4Testmethodsforend-usersaregenerallydesignedforfieldsettingsandareintendedasastandardizedsetofproceduresfordeterminingthesuitabilityofaspecificmachineforaparticularuse.1.5Applicationssuchaslumbermarkingorsortingsystemsutilizingtheoutputofthein-linemeterarenotpartofthisstandard.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N95
【国际标准分类号】:79_040
【页数】:22P.;A4
【正文语种】: