2HA数字式光度计2HA数字式光度计优点：经验证的设计，简洁，便于操作***控制增益和straylight水平。全部模拟装置模拟面板与仪表可调设定点和明显的警报声两个内部参考值，DOP和PAO。坚固的压铸铝外壳100至250伏交流电，50/60赫兹电源***丝融合与返回舱备用可选的12英尺（4.2米），扫描探针处理完成模拟显示，***工程学和视觉警报可选坚固，耐用，可锁定的情况下英文详细介绍DescriptionPortability:The2HAisthe***allest,lightestanalogphotometer***ailableinaportableself-containedunit.The2HAhasbeendesignedwiththeuserinmindforsimplicityofoperationandvirtuallymaintenance-freeuse.ItsbasicpurposeistodetectandmeasuremassconcentrationofaerosolinairTechnology:AstreamofcleanairfromanULPAfilterispassedthroughtheforwardlightscatteringchamberastheinstrumentisbalancedelectricallywithrespecttoanyincidentalstraylightordarkcurrent.Abaselineofresp***emaybesetasabasisofcomparison,usingtheinternalreferencecircuit,whichissetfor100microgramsofpoly-dispersedparticles.Oncethebaselinehasbeenset,anysubsequentreadingwillbeinrelationtothatbaseline.Therangeofconcentrationmeasurableisfrom100to0.0001on5linearscalesonthestandardinstrument.The2HAhastwopre-setreferencevalues(DOP&PAO)foraerosolagents.TheoperatorcanquicklyselectDOPorPAOasthechallengeaerosol.FeaturesThe2HAphotometerisfurnishedinarugged,diecastaluminumcasethatissuitableforuseinindustrialorlaboratoryenvironments.Theunitisequippedwithaswitchinginternalpowersupplytoenableoperationonallstandardelectriccurrentworldwide.2HANThe2HAisalso***ailableinaversionsuitablefornuclearapplicati***,the2HAN.Thisunithasfeaturesidenticaltothe2HAplusaspecialsealedsamplingchamberandHEPAfiltertominimizecontaminationofinternalcomponents.Theunitisspecificallydesignedtoallowsaferemovalandreplacementofcontaminatedsamplingcomponents.ScanningProbeTheoptionalscanningprobehasaanalogdisplaythatissimultaneouslyupdatedwiththe2HAdisplay.Thisfeatureenablesanoperatortopinpointleaksandaccuratelydetermine%leakageatalocationremotefromtheunit.Aflexible,segmented,tubelocatedbetweenthehandleandsamplingnozzleallowsthenozzletobeadjustedtoanyanglenecessarytoscanafiltersurfaceefficiently.Threeinterchangeablenozzlesareprovidedtomeetindustrystanda***andprotocolsandpermitfast,accuratescanning.ShippingCase:Anoptionalhe***y-duty,lockableshippingcaseisalso***ailable.Thishighlyrecommendedcaseislinedwithathickpoly-foamcushioningandmeetstherequirementsofallcommercialcarriersforshippingorascarry-onluggage.Itcanaccommodatethe2HAunit,scanningprobewithnozzles,100%sampletubing,operationmanualandpowercord.Specificati***Size:10.1"W×14.3"D×5.8"H(25.7cmW×36.3cmD×14.7cmHWeight:15.5lbs.plus2.5lbs.forscanningprobe&accessories=18.0lbs.Enclosure:Instrumentcaseisrugged,diecastaluminumandcanbeeasilydisassembledasrequiredforrecalibrationandserviceofinternalcomponents.Theenclosurehastwoconvenientretractablecarryinghandlesonthesides.Fold-uplegsunderthecasecantiltthecontrolpaneldisplayupwardforeasyviewing.Power:100to250VoltsAC,50/60Hzfusedpowerentrymodulewithsparefuses.Automaticallyadjuststovirtuallyallstandardelectriccurrentusedworldwide.Pleasespecifypowersupplycablewhenorderingunit(UL/CSA/VDE)Alarm:AudibleAlarminunitsoundswhentheadjustablesetpointisexceeded.LEDonprobelightsupwhensetpointisexceeded.Amplifier:Solid-statelinearamplifier.Accuracy:2%full-scaleforthedecadeinuse.LightSource:Improved,longerlastingandmorestablesolid-statescatteringchamberlightsource.Photometeroperatesatlowerpower,generatinglessheatandlowerstraylightvalues.Lifeexpectancyis50,000to100,000hours.ScatteringChamber:Redesigned***aller,lighterandmoreefficientforimprovedperformance.Easiertocleanandrequireslessmaintenance.VacuumPump:True(1)cubicfootperminute(cfm)samplerate(28.3litersperminute)usingatwinhead,carbonvanepumpforquietoperationanddependability.Anexternalexhaustfiltercaneasilybeattachedtotheoutletofthevacuumpumptoentrapanyparticlesfromthepumpexhaust.Output:AnDB9connectorisprovidedstandardonallunitsfora0-1VDCoutput)