产品名称:PMT系列粉尘浓度变送器产品型号:PMT两线制4-20mA输出PMT系列粉尘浓度变送器是一款久负盛名、几乎免维护的一款电荷感应粉尘流动检测产品，能提供连续在线粉尘含量检测和除尘设备粉尘泄漏检测。探头工作原理：采用电荷感应和探头保护技术，当粉尘微粒流经探头附近的时，微弱的电信号感应进入到探头中，一个DSP数字信号处理器处理此感应信号，成为一个线性比例与粉尘威力质量含量的绝对输出值。由于采用了探头保护技术和电荷感应技术，确保该探头能检测各种潮湿粉末和高导电粉尘，传感器为被动型(无电源和电子电路)，基本免维护，非常耐用。测量范围：>0.3微米的任何颗粒探测等级：0.1PA等效于0.1mg/m3，0.5PA等效于0.5mg/m3，5.0PA等效于5.0mg/m3。输出：4-20mA优点：1.比传统的摩擦电原理的粉尘探头具有更高的可靠性2.满足美国国家环保局EPA认证3.对于各种腐蚀、粘稠气体、水比较多,需要仪表本身比较耐磨损和防堵塞的场合.应用场合各种管道气体输送粉料,气体加压运输等以及布袋除尘(收尘设备),高炉余压发电TRT粉尘保护.严格和传统的摩擦电原理粉尘探头区分.特性：Service:Airandcompatiblegases,anytypeparticulateconductiveornonconductive.WettedMaterials:304SSandPTFE.AirVelocityRange:300ft/minandhigher.MinimumDetection:Standard:10.0pA,Optional:5.0pAand0.5pA.TemperatureLimits:Ambient:-15to160°F(-25to70°C);Process:Standard:-40to250°F(-40to120°C);Optional:-40to450°F(-40to232°C).PressureLimit:10psi(0.69bar).PowerRequirement:18-28VDC(24VNominal).OutputSignal:4-20mA.LoopResistance:300Ohmsmaximum.CurrentConsumption:Poweredfrom4-20mAloop.ElectricalConsumption:TerminalBlock.ProcessConnection:SeeModelCharton.EnclosureRating:Weatherproof,NEMA4X(IP66).MountingOrientation:Any.Weight:Varieswithlengthofprobeandtypeofmount.AgencyApprovals:CEOrdinarylocationsonly,CSA选型表EXAMPLEPMTA11T1P11L1.5PMT-A11T1P1-L1.5ParticulateTransmitter,ordinary/generalpurposelocations,CEapproval,NEMA4X,CSA,,1/2"NPTconnection,250°Fmax.temp.,10psimax.pressure,10.0-5000pA,1.5"probe.SERIESDESIGNATORPMTPMTParticulateTransmitter(1-piececonfiguration,sensorincludedinprice)ENCLOSURERATINGA1Ordinary/GeneralPurposeLocations,CEApproval,NEMA4X,CSAAHZ2HazardousLocation,CSAApproval,ClassI,DivisionII,GroupsA-D;ClassII,GroupsF,GPROCESSCONNECTION11/2"NPT21.5"QuickClampConnection32"150#ANSIFlange42"150#ANSIFlangewithProcessMatingFlangeandInstallationKit.MAXIMUMPROCESST1250°F(121°C)TEMPERATURET2450°F(232°C)MAXIMUMPROCESSP110psiPRESSURERANGE