【英文标准名称】:Calibrationofvibrationandshockpick-ups-Accelerometerresonancetesting-Generalmethods
【原文标准名称】:振动和冲击传感器校准.加速度计共振试验.一般方法
【标准号】:BS6955-22-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-06-15
【实施或试行日期】:1997-06-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:机械冲击;加速度计;拾音器;共振;校正;振动试验;频率测量;座椅;振动;试验设备;振动测量
【英文主题词】:Accelerometers;Calibration;Measuringinstruments;Measuringtechniques;Pick-ups;Vibration
【摘要】:ISO5347comprisesaseriesofdocumentsdealingwithmethodsforthecalibrationofvibrationandshockpick-ups.ThispartofISO5347laysdowndetailedspecificationsfortheinstrumentationandprocedurestobeusedforaccelerometerresonancetesting.Itappliestorectilinearaccelerometersofthepiezoresistive,piezoelectricandvariablecapacitancetypesinthefrequencyrange50Hzto200kHz.TheproceduresareingeneralcontrarytothosedescribedinISO5347-14whichislimitedtoundampedaccelerometers.Thefrequencyresponseofapiezoelectricaccelerometerdependsonthevalueofthe(lowest)resonancefrequencyoftheinstrumentwhenmountedonthestructuretobetested.Itdoesnotappearpossibletospecifyatestwhichwilldeterminethisfrequencyforallinstallationsofagivenaccelerometer.Thisproceduregivestheaccelerometerresonancefrequencyunderasetofstandardreproducibleconditions,withtheunderstandingthattheresonancefrequencyinactualusewillinallprobabilitybeappreciablydifferent(generallylower,byafactordependingonthemassandcomplianceoftheteststructureandthemethodofattachment).Theprocedureisnotsuitableforevaluatingthemountedresonancefrequencyforafieldofapplication;asuitablemethodisgiveninISO5348.
【中国标准分类号】:M72
【国际标准分类号】:17_160
【页数】:12P;A4
【正文语种】:英语


【英文标准名称】:Formicacidforindustrialuse;methodsoftest;PartVII:Determinationoflowcontentsofothervolatileacids;Titrimetricmethodafterdistillation
【原文标准名称】:工业用甲酸试验方法第7部分:其他挥发性酸低含量的测定蒸馏后滴定法
【标准号】:ISO731-7-1977
【标准状态】:作废
【国别】:国际
【发布日期】:1977-02
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:含量测定;甲酸;氯化物;试验;硫酸盐;化学分析;化学分析和试验;酸度
【英文主题词】:formicacid;chemicalanalysisandtesting;chlorides;tests;chemicalanalysis;determinationofcontent;sulphates;testing;acidity
【摘要】:Theprincipleconsistsinadecompositionofmostoftheformicacidinatestportionbysulphuricacidanoftheremainderbychromicacid.Steamdistillationofaceticacidand/orothervolatileacidsandtitrationofthedistillatewithstandardvolumetricsodiumhydroxidesolutioninthepresenceofphenolphthaleinasindicator.Themethodisapplicabletoproductscontaininglessthan0,5%(m/m)ofothervolatileacids,expressedasaceticacid.TheISORecommendationR1913-1971wasreviewandhasbeenchangedtoISO731/7.ISO731/7replacesISO/R1913-1971,towhichitistechnicallyidentical.
【中国标准分类号】:G15
【国际标准分类号】:
【页数】:4P;A4
【正文语种】:英语