Designation:G179−04(Reapproved2011)StandardSpecificationforMetalBlackPanelandWhitePanelTemperatureDevicesforNaturalWeatheringTests1ThisstandardisissuedunderthefixeddesignationG179;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationprovidesspecificinformationforthemanufacturinganduseofmetalblackandwhitepaneltem-peraturedevicestomeasuretemperaturesthatestimatehighestmaximum(black)andlowestmaximum(white)temperaturesofcoatedmetalspecimensduringnaturalweatheringtests.1.1.1Theconstructionofablackorwhitepanelhasasignificanteffectontheindicatedtemperature.Thisstandarddescribesarobustconstructionfromthepanelsinvestigated,whichhasbeenshowntoprovidethehighest,mostconsistenttemperatureswhencomparedside-by-sidewithotherblackpanelconstructions.1.2Thisspecificationincludesdetailsondesignrequire-mentsandquantitativemeasurementtechniques,whichwillleadtotheproperselectionofmaterialsanduseforblackandwhitepaneltemperaturesensors.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatoryrequirementspriortouse.NOTE1—ThereisnoequivalentISOstandarddescribingtheselectionanduseofblackpanelsensorsfornaturalweatheringtests.2.ReferencedDocuments2.1ASTMStandards:2D523TestMethodforSpecularGlossE220TestMethodforCalibrationofThermocouplesByComparisonTechniquesE430TestMethodsforMeasurementofGlossofHigh-GlossSurfacesbyAbridgedGoniophotometryE772TerminologyofSolarEnergyConversionE881PracticeforExposureofSolarCollectorCoverMate-rialstoNaturalWeatheringUnderConditionsSimulatingStagnationModeE903TestMethodforSolarAbsorptance,Reflectance,andTransmittanceofMaterialsUsingIntegratingSpheres(Withdrawn2005)3G7Practice...
