臭氧在紫外（254nm）有强的吸收，可以通过紫外的吸收来测量空气中臭氧。通过***灯的紫外照射样品室。臭氧浓度不同，光被吸收的值也不同。臭氧浓度遵守Lambert-Beer's定律.I=I0exp(-eLC)I:Absorpedlightintensity(measure)I0:Unabsorbedlightintensity(blank)e:MolecularabsorptioncoefficiencyL:LightpasslenghtC:Ozoneconcentration特征:大LCD触摸屏，操作简单（可选彩色触摸屏）样品切换方式增加零点的稳定性.简易的流程表盘使维护简单宽范围计算机控制，操作简便.零点和斜率标定简易和PC通讯方便Specificati***:MeasuringobjectO3inambientairPrincipleUVabsorptionmethodMeasuringrange0-0.1/0.2/0.5/1ppmSamplingflowrateAbout2L/min.Lowerdetectablelimit1ppb(measuringrange:0-1ppm)ZerodriftWithin&plu***n;1ppb/day(measuringrange:0-1ppm)SpandriftWithin&plu***n;2%ofspangasconc./dayRepeatabilityWithin&plu***n;1%ofspangasconc.LinearityWithin&plu***n;2%InterferenceLessthan4ppb(againstToluen1ppm)Lessthan4ppb(25ûC,80%RHH20)Resp***etimeWithin2minute(T90)ItemsdisplayedMeasuringvalue,messageetc.Operationtemperature0to40ûCOperationhumidity0to90%RHOutputforrecorderSerial(Standard)oranalog(In-outputforTelemeter:Option)DigitalinterfaceRS-232C,EthernetPowerrequirement100VAC(Standard)50/60HzPowerc***umptionMax.300VADimensi***430Wx220Hx400D(mm)WeightApprox.13kg(withoutpump))