產品簡介 美國2B公司的205型雙光束紫外光臭氧分析儀，采用最新技術的254nm紫外雙光束光源技術及設計，可以同時測量被測樣品臭氧值及去臭氧的凈化空氣值。結合其它專利技術設計，205型雙光束紫外光臭氧分析儀的測量響應時間僅需2秒，成為市場上最快響應時間的臭氧分析儀。儀器量程由1ppbv至100ppmv。該儀器具有高精度(1ppb)、體積小、重量輕(5磅,2.3kg)及耗電量低。特別適合使用于航天及汽球上的大氣臭氧測量。 特點： 使用雙束254nm紫外光吸收法 高精度及分解度，量程由1ppbv至100ppmv 2秒響應時間，較同類型產品優(yōu)越 低電量消耗，能以12VDC(5.0W)外置電源操作 DewLineTM技術減低水氣對儀器的干擾 內置數據記錄功能及實時時鐘顯示。并有3組仿真訊號輸出 以RS-232輸出時間、日期、臭氧濃度、儀器內溫度、氣壓及另外3組補充輪入訊號，例如外置溫度、濕度及氣壓 模擬輸出0-2.5V 選配GPS功能及CF記憶卡 應用： 氣球及航空的大氣測量 建立遙控監(jiān)測網絡 建立城市監(jiān)測網絡 個人及工作環(huán)境監(jiān)測 工業(yè)生產中監(jiān)測 產品規(guī)格： 操作原理 雙光束紫外光254nm燈 量程 1ppbv~100ppmv 精度 2% 采樣時間 2秒、10秒、1分鐘、5分鐘及1小時 記憶容量 20,480組 輸出 數碼顯示，0~2.5V，RS-232 流量 大約1L/min 尺寸/重量 90 210 290mm/4.7磅 電源 12VDC交流電 TheModel205OzoneMonitor makesuseoftwodetectioncellstoimproveprecision,baselinestabilityandresponsetime. IntheDualBeaminstrument,UVlightintensitymeasurementsIo(ozone-scrubbedair)andI(unscrubbedair)aremadesimultaneously.Combinedwithotherimprovements,thismadeitpossibletoreducethetimebetweenozonemeasurementsto2seconds,makingourinstrumentthefastestUV-basedozonemonitoronthemarket,whilestillretainingthesmallsize,weightandpowerrequirementsofourpopularModel202OzoneMonitor. Fastmeasurementsareespeciallydesirableforaircraftandballoonmeasurementswherehighspatialresolutionisdesired. Alternatively,onecanchoosetoaveragemorepointsinternallytoobtainevenbetterprecision. TheModel205hasallofthefeaturesoftheModel202,includingchoiceofaveragingtime(2s,10s,1min,5min,1hr),analogoutput(0-2.5V),realtimeserialoutput,internaldataloggerwith3analoginputsforsimultaneousloggingofothermeasurements(e.g.,T,PandRH),realtimeclock,andoptionalflashmemory. SchematicDiagram Features Backupsamplingpumpandflowmeter(nowstandard);iftheflowratedropsbelowacriticalvalue,thebackuppumpisactivatedandanindicationdisplayedontheLCD Internaldatalogger(EEPROM),logs14,336linesofdata Realtimeclock Bothserialanduser-scaleableanalogvoltageoutputs(5-20mAcurrentoutputoptional) Three0-2.5VDCanaloginputsforloggingothermeasurements,suchasexternaltemperature,pressureandhumidity Convenientuserinterfacetomicroprocessor,includingcalibrationparameters(gainandzero) Selectabledataaveragingtimesof10s,1min,5minand1hr(customaveragingtimesavailable) DewLine foreliminationofanywatervaporinterference,auniquefeatureof2BTechinstruments Options FlashCardMemoryforvirtuallyunlimited,portabledatastorage GPSforcontinuousloggingoflatitude,longitudeandaltitude Rechargeablemetalhydridebatteryprovides12hrofcontinuousoperation Externalparticlefilter Serial-to-USBadapter Rotaryvaneairpumpforlowtemperatureandquietoperation Externalairpumpforlongpumplife Specifications MeasurementPrinciple UVAbsorptionat254nm;DualBeam LinearDynamicRange 1.0ppbto250ppm Resolution 0.1ppb Precision(1 ;rmsnoise) Greaterof1.0ppbor2%ofreading Accuracy Greaterof1.0ppbor2%ofreading LimitofDetection(2 ) 2.0ppb NIST-TraceableCalibration Yes MeasurementInterval 2s(Dataaveragingoptions:2s;10s,1min,5min,1hr) FlowRate(nominal) ~1.8Liter/min FlowRateRequirement 1.2L/min BaselineDrift 1ppb/day 3ppb/year SensitivityDrift 1%/day 3%/year MeasurementTime,Frequency 2s,0.5Hz ResponseTime,100%ofStepChange 4s,2points AveragingTimes 2s,10s,1min,5min,1hr DataStorage 14,336lines(10savg.=1.4days;5minavg=1.4mo.) OzoneUnits ppb,ppm,pphm,mgm-3,mgm-3 PressureUnits mbar,torr TemperatureUnits C,K TandPCorrected Yes OperatingTemperatureRange 0to50 C;-20to50 Cwithlowtemperaturemodifications(rotaryvanepumpandlampheater) OperatingAltitudeRange ~0-30km(~30-1000mbar) PowerRequirement; Suppliedbybatteryor110/220VACPowerPack 12Vdcor120/240Vac,415mA,5.0watt(3.9wattwithcellheaterunplugged) Size 3.5x8.5x11inches(9x21x29cm) Weight 4.7lb(2.1kg);1.6lb(0.7kg)withoutinstrumentcase DataLoggerCapacity 14,336lines(10savg.=1.4days;1minavg=10days;5minavg=1.4mo; 1hravg=1.6yr AnalogInputsforInternalLoggingofOtherInstruments 3AnalogInputs,0-2.5V;Forexample,couldlogexternalT,PandRH DataOutputs RS232,0-2.5VAnalog,LCDDisplay;ExternalUSBConverter:(Optional4-20mACurrent;requestquote) DataTransferBaudRates 1200,2400,4800,19200 OutputRanges UserDefinedScalingFactorinMenu DewLine Yes BackupAirPump Yes FlowMeter Yes Options GPS,FlashCardMemory,4-20mACurrentOutput;LampHeater;RotaryVaneAirPump;Long-LifeExternalAirPump;RackMountCase SystemIncludes Model205OzoneMonitor ACPowerAdapter(100-240VACto12VDC) withCountry-SpecificPlug CigaretteLighterAdapter BatteryWireConnector ZeroingCartridge OperationManualonCD CalibrationDataandNIST-TraceableCalibrationCertificate InstrumentBirthCertificate OneYearWarranty TodownloadabrochuredescribingtheModel205OzoneMonitor (PDFformat),clickonthedownloadbuttonbelow.