ASTM D6027-1996(2004) 土工技术用途的校正衬垫代替换能器的标准试验方法
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【英文标准名称】:StandardTestMethodforCalibratingLinearDisplacementTransducersforGeotechnicalPurposes
【原文标准名称】:土工技术用途的校正衬垫代替换能器的标准试验方法
【标准号】:ASTMD6027-1996(2004)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D18.95
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:位移;仪器装置;应变;校正;换能器
【英文主题词】:calibration;displacement;instrumentation;strain;transducer
【摘要】:TheLDTsplayanimportantroleingeotechnicalapplicationstomeasurechangeindimensionsofspecimens.TheLDTsmustbecalibratedforuseinthelaboratorytoensurereliableconversionsofthesensorrsquo;electricaloutputtoengineeringunits.TheLDTsshouldbecalibratedbeforeinitialuse,atleastannuallythereafter,afteranychangeintheelectronicconfigurationthatemploysthesensor,afteranysignificantchangeintestconditionsusingthetransducerthatdifferfromconditionsduringthelastcalibration,andafteranyphysicalactiononthetransducerthatmightaffectitsresponse.LDTsgenerallyhaveaworkingrangewithinwhichvoltageoutputislinearlyproportionaltodisplacementofthetransducer.Thisprocedureisapplicabletothelinearrangeofthetransducer.RecommendedpracticeistousetheLDTonlywithinitslinearworkingrange.1.1Thistestmethodoutlinestheprocedureforcalibratinglineardisplacementtransducers(LDTs)andtheirreadoutsystemsforgeotechnicalpurposes.Itcoversanytransducerusedtomeasuredisplacementwhichgivesanelectricaloutputthatislinearlyproportionaltodisplacement.Thisincludeslinearvariabledisplacementtransducers(LVDT''s),lineardisplacementtransducers(LDTs)andlinearstraintransducers(LST''s).1.2Thiscalibrationprocedureisusedtodeterminetherelationshipbetweenoutputofthetransduceranditsreadoutsystemandchangeinlength.Thisrelationshipisusedtoconvertreadingsfromthetransducerreadoutsystemintoengineeringunits.1.3Thiscalibrationprocedurealsoisusedtodeterminetheaccuracyofthetransduceranditsreadoutsystemovertherangeofitsusetocomparewiththemanufacturer''sspecificationsfortheinstrumentandthesuitabilityoftheinstrumentforaspecificapplication.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P97
【国际标准分类号】:17_020
【页数】:5P.;A4
【正文语种】:
【原文标准名称】:土工技术用途的校正衬垫代替换能器的标准试验方法
【标准号】:ASTMD6027-1996(2004)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D18.95
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:位移;仪器装置;应变;校正;换能器
【英文主题词】:calibration;displacement;instrumentation;strain;transducer
【摘要】:TheLDTsplayanimportantroleingeotechnicalapplicationstomeasurechangeindimensionsofspecimens.TheLDTsmustbecalibratedforuseinthelaboratorytoensurereliableconversionsofthesensorrsquo;electricaloutputtoengineeringunits.TheLDTsshouldbecalibratedbeforeinitialuse,atleastannuallythereafter,afteranychangeintheelectronicconfigurationthatemploysthesensor,afteranysignificantchangeintestconditionsusingthetransducerthatdifferfromconditionsduringthelastcalibration,andafteranyphysicalactiononthetransducerthatmightaffectitsresponse.LDTsgenerallyhaveaworkingrangewithinwhichvoltageoutputislinearlyproportionaltodisplacementofthetransducer.Thisprocedureisapplicabletothelinearrangeofthetransducer.RecommendedpracticeistousetheLDTonlywithinitslinearworkingrange.1.1Thistestmethodoutlinestheprocedureforcalibratinglineardisplacementtransducers(LDTs)andtheirreadoutsystemsforgeotechnicalpurposes.Itcoversanytransducerusedtomeasuredisplacementwhichgivesanelectricaloutputthatislinearlyproportionaltodisplacement.Thisincludeslinearvariabledisplacementtransducers(LVDT''s),lineardisplacementtransducers(LDTs)andlinearstraintransducers(LST''s).1.2Thiscalibrationprocedureisusedtodeterminetherelationshipbetweenoutputofthetransduceranditsreadoutsystemandchangeinlength.Thisrelationshipisusedtoconvertreadingsfromthetransducerreadoutsystemintoengineeringunits.1.3Thiscalibrationprocedurealsoisusedtodeterminetheaccuracyofthetransduceranditsreadoutsystemovertherangeofitsusetocomparewiththemanufacturer''sspecificationsfortheinstrumentandthesuitabilityoftheinstrumentforaspecificapplication.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P97
【国际标准分类号】:17_020
【页数】:5P.;A4
【正文语种】:
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