ASTM D6318-2003(2008) 用棒检验方法校准回声测深仪的标准实施规范

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【英文标准名称】:StandardPracticeforCalibratingaFathometerUsingaBarCheckMethod
【原文标准名称】:用棒检验方法校准回声测深仪的标准实施规范
【标准号】:ASTMD6318-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D19.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:bathymetricsurveys;depthsounding;echosounders;fathometers;hydrography;reservoirsurveys;sedimentsurveys;velocityprofiler;Barcheckmethod;Calibration--wateranalysisinstrumentation;Fathometer
【摘要】:Theaccuracyofdepthmeasurementsmadebyafathometerorechosounderrequiresanumberofcorrectionsbecauseofthevariabilityofsoundoracousticvelocityinwaterwithchangesintemperature,salinity,anddepthofwater.Inadditioninstabilityoftheequipmentcanalsoresultinsignificanterrors.ForadditionalinformationseePracticeD5073.Calibrationofechosoundinginstrumentsisabsolutelycriticalinassuringtheadequacyofdepthmeasurements.Whenanechosounderhasbeenaccuratelycalibrated,anyobserved(recorded)depthcanberelatedtothetruedepthofwater.Sincetheintendedpurposeofechosoundingistomeasurethex201C;truex201D;depth,anindependentx201C;truex201D;referencemustbeused.Abar-checkisthemostwide-spread,easiesttoconstruct,andmosteconomicalmechanicalmethodtodeterminecorrectionsforinstrumentandvelocityerrors.Thisprocedureexplainsthecalibrationofafathometerorelectronicdepthsounderusingabar-check.Bar-checkingtechniquesandequipmentaregeneralinnatureandmayneedtobemodifiedforuseinspecificfieldconditions.1.1Thispracticeprovidestheuserwithproceduresusedinmanuallycalibratingthefathometerorelectronicdepthsounder.Thisnarrativedescribescalibrationterminology,describesacceptableenvironmentalconditionsforcalibration,anddescribesthecalibrationprocedures.1.2Thereferencescitedcontainusefulinformationintheconstructionandthecorrectoperationofthecalibrationequipment.1.3Anyreferencescitedinthisnarrativetospecificproductsorbrandnamesaremadeforinformationonly,andisintendedtobedescriptive,butnotrestrictive,ofproductsthatwillperformsatisfactorily.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N65
【国际标准分类号】:47_020_70
【页数】:3P.;A4
【正文语种】:英语