NF C46-207-1994 测量、控制和调节.电气温度传感器.热电耦绝缘管
作者:标准资料网 时间:2024-05-27 19:35:35 浏览:8856
来源:标准资料网
【英文标准名称】:Measurement,control,regulation.Electricaltemperaturesensors.Isolatingtubesforthermocouples.
【原文标准名称】:测量、控制和调节.电气温度传感器.热电耦绝缘管
【标准号】:NFC46-207-1994
【标准状态】:现行
【国别】:法国
【发布日期】:1994-12-01
【实施或试行日期】:1994-12-05
【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】:温度测量仪表;尺寸;电气工程;绝缘管;热电偶;形状;管;安全措施;尺寸公差;过程测量和控制技术;应用;公差(测量);温度测量;控制;温度传感器;测量;试验;保护管;检验;作标记;控制工艺学;材料;保护措施;名称与符号
【英文主题词】:Controltechnology;Controlling;Designations;Dimensionaltolerances;Dimensions;Electricalengineering;Inspection;Insulatingtubes;Marking;Materials;Measuring;Pipes;Processmeasuringandcontroltechnology;Protectivemeasures;Protectivetubes;Safetymeasures;Shape;Temperaturemeasurement;Temperaturesensors;Temperature-measuringinstruments;Testing;Thermocouples;Tolerances(measurement);Use
【摘要】:
【中国标准分类号】:N11
【国际标准分类号】:17_200_20
【页数】:8P.;A4
【正文语种】:其他
【英文标准名称】:Sectionalspecification:opticalcablestobeusedalongelectricalpowerlines(OCEPL).
【原文标准名称】:分规范:与电力传输线路一起使用的光缆(OCEPL)
【标准号】:NFC93-855-2003
【标准状态】:作废
【国别】:法国
【发布日期】:2003-01-01
【实施或试行日期】:2003-01-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆结构;质量保证;光纤;电力电缆;架空线;电力导线;使用条件;装置;纤维光学;单模纤维;电缆;电缆;梯度纤维;阻尼(波);缩写;试验;定义;光波导;分规范;型式;电导线;作标记;护套电缆;规范(验收);电子设备及元件;尺寸选定
【英文主题词】:
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:39P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforColorimetric/SpectrophotometricProceduretoQuantifyExtractableChemicalDialkyldithiocarbamate,Thiuram,andMercaptobenzothiazoleAcceleratorsinNaturalRubberLatexandNitrileGloves
【原文标准名称】:对天然胶乳和腈类手套中的可萃取二烷二硫胺甲酸盐,秋兰姆和巯基苯并噻唑加速剂进行定量的比色测定/分光光度测定程序的标准试验方法
【标准号】:ASTMD7558-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:D11.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:比色的
【英文主题词】:colorimetric;mercaptobenzothiazole;spectrophotometric;thiolaccelerator;thiuram;zincdialkyldithiocarbamate
【摘要】:nbsp;nbsp;nbsp;Dialkyldithiocarbamates(DTCs),benzothiazoles,andthiuramsareoftenusedasvulcanizationacceleratorsinNRLproducts.ZincDTCacceleratorsareaddedeitherdirectlyorareformedinsituduringthevulcanizationprocessviareactionbetweenathiuram(s)andzincoxide.DTCs,benzothiazoles,andthiuramshavebeendetectedinleachatesfrommedicaldevicesmadeofrubbersuchasgloves.Studieshaveshownthesechemicalscancauseallergiccontactdermatitis.Asimpleselectivemethodtomonitorrubberacceleratorlevelsinrubberextractswouldbeusefulforqualitycontrol,productscreeningandresearch.Thiscolorimetricassaymeasuresdialkyldithiocarbamates,includingzincdialkyldithiocarbamates(ZDTC),mercaptobenzothiazole(MBT)andthiuramsasatotalthiolvulcanizationacceleratorlevelinrubberproducts.AUVspectrophotometerwithdetectionat320nmisusedtomeasuretheZDTC,mercaptobenzothiazoleandthiurams.Sampleextractsdilutedat1:20priortomeasurementonthespectrophotometerisusuallysufficienttoquantifytheresidualacceleratorlevelfrommostcommerciallyavailablerubbergloves;however,sampledilutioncanbeadjusted(fromneatextractto>1:20dilution)basedonanalyticalneeds.ThiuramsandZDTCscomplexwithcobaltturningtheextracttoaconcentration-dependentshadeofgreen.ZDTCsreactsquicklywhilethiuramsreactveryslowly(requiringaheatcatalyst).MercaptobenzothiazoledoesnotcomplextoCo(III),however,itabsorbsstronglyat320nm.ItcanbedistinguishedfrombothZDTCsandthiuramsbyitsstrongabsorbanceat320nmwithoutthecobaltdependentvisiblegreencolor.CobaltcomplexedthiuramsandZDTCs,butnotMBT,alsohaveandabsorbanceat370nm(2).1.1Thistestmethodisdesignedtoquantifytheamountoftotalextractableacceleratorsinnaturalrubberlatex(NRL)andnitrilegloves.Threecommonclassesofrubberaccelerators,themercaptobenzothiazole(MBT),thiuram,andthiocarbamatetypecompoundscanbedetectedandquantifiedbythismethod.Ifthespecificrubberaccelerator(s)presentintheglovematerialisnotknown,quantificationisbasedonzincdibutyldithiocarbamate(ZDBC)equivalents.Thismethodwillnotdetectallpotentialrubberaccelerators,includingmercaptobenzothiazoledisulfide,dimorpholine,thioureasanddiphenyldiamine.1.2Forthepurposeofthistestmethod,therangeofchemicalacceleratormeasurementisbasedonthelimitofdetection(LOD)establishedintheperforminglaboratory.1.3Thistestmethodshouldbeperformedbyexperiencedanalystsorunderthesupervisionofthoseexperiencedintheuseofspectroscopyandworkingwithorganicsolvents.1.4Thistestmethodhasnotbeenvalidatedformeasurementoflongchaindithiocarbamatesoracceleratorsfromotherrubberproducts,suchaslubricatedcondoms(1).Althoughthisassayhasbeenreportedintheliteraturefortheevaluationofacceleratorlevelsincondoms,furthervalidationforacceleratormeasurementfromotherrubberproductsisrequiredbythetestinglaboratorypriortouse.1.5ThistestmethodisnotdesignedtoevaluatethepotentialofrubbermaterialstoinduceorelicitTypeIVskinsensitizationreactions(forTypeIVskinsensitizationreactionsseeTestMethodD6355).Totalextractableacceleratorcontentdoesnotreflectbioavailablityofindividualacceleratorsthataredetectedandmeasuredbythismethod.ThistestmethodshouldbeusedtotestandmeasurethetotalresidualchemicalacceleratorlevelinNRLandnitrileglovesundercontrolledlaboratoryconditions,andshouldnotbeusedtodescribe,appraise,orassessthehazardorriskofthesematerialsorproductsunderactualin-useconditions.
