美国ECO公司生产，检测范围0.03-20ppm臭氧检测仪。特点：1.容易安装2.温度湿度补偿3.传感器是预标定可更换模块4.可编程的开关点设置5.当超过0.1ppm安全标准时提示6.低花费长期稳定运行SpecificationsRange0.03-20.00ppmofozoneAccuracy10-15%(Typical,dependsonapplication)OutputcontrolSPDTnon-latchingrelay.Contactsratedat5amps,250VACTemperatureandhumidity41-104F,5-40C20-95%RHMeasurementPrincipleThereplaceableSM-XboardcontainsaHMOS(heatedmetaloxidesemiconductor)sensorhavingalifeof2-3yrs.dependingonitsplacedenvironmentandusagePowerRequirements12-24VDC,300mA0.1ppmdangeralarmPanelLEDandSPDTrelay5ampcontacts.ConnectionsTerminalblocksforrelayoutputandDCinput.2.5mmDCpowerjackforACadapterIndicatorsGreenLED:instrument on. RedLED:set-point(0.1PPM)exceededandrelayactivatedMonitoroutputs0-2VDC,4-20mA,RS-232digitalCaseFlame-resistantABSwithmountingearsSize127x64x42-mm(HxWxD)5x2.5x1.625-inWeight200gr(7oz)OPERATIONFirst,verifythattheinstrumentisworkingasreceived.VerifythatasensormoduleiswiredtotheOS-4maininstrumentprocessor.Theotherterminalblocksandset-pointcontrolsarefoundontheinsidebackoftheinstrument(removecovertoaccessthem).ConnectyourACadaptertothepowerjackoryour8-24VDCsupplytoterminals+andGNDoftheterminalblockTB4.ThegreenLEDPowerindicatorshouldlightanddigitsshouldshowonthedisplay.Inordertoburnoffanychemicalsthatthesensormayhaveabsorbedduringshippingandstorage,youshouldlettheOS-4runwithpoweronandthesensormoduleconnectedfor1hourbeforeresponsetestingorovernightbeforethefirstuseonsite.Itisrecommendedtotesttheinstrumentforpositiveresponsewithanozonegeneratorwhentheinstrumentisreceivedandagainatthesitewheretheinstrumentisinstalled.EcoSensors,Inc.offersaninexpensivehandheldozonegeneratorforthistestpurpose,themodelOG-1.YoucannowconnecttheOzoneSwitch toanexternaldevicesuchasanozonegenerator,alarmorPLC.SeeOUTPUTSTOEXTERNALEQUIPMENTbelow.Bringtheexternalwiringthroughtheaccessholeonthebottomoftheenclosure.