产地美国是否进口否加工定制是品牌其他型号A3000精度等级2%***大工作压力0.2（Mpa）外形尺寸120（mm）适用范围气体量程范围0-0.5（kPa）美国DWYER德威尔PhotohelicA3000-250PaA3000-500PaA3000-750Pa指针差压开关订货时，请注明电源类型，标准电源为100VAC，可选：230VAC，或者24VAC，如需要24VDC请选用3000MR系列SeriesA3000Photohelic®Switch/Gagesfunctionasversatile,highlyrepeatablepressureswitchescombinedwithaprecisepressuregageemployingthetime-provenMagnehelic®gagedesign.ThePhotohelic®switch/gagemeasuresandcontrolspositive,negativeordifferentialpressuresofairandcompatiblegases.Standardmodelsareratedto25psig(1.7bar)withopti***to35(2.4)or80(5.5bar)psig.Twophototransistoractuated,DPDTrelaysareincludedforlow/highlimitcontrol.Easytoadjustsetpointindicatorsarecontrolledbyknobslocatedonthegageface.Individualsetpointdeadbandisonepointerwidth-lessthan1%offullscale.Setpointscanbeinterlockedtoprovidevariabledeadband-idealforcontroloffans,dampers,etc.Gagereadingiscontinuousandunaffectedbyswitchoperation,evenduringlossofelectricalpower.Choosefromfullscalepressurerangesfromalow0-.25in(0-6mm)w.c.upto30psi(21bar).Dwyer差压开关A3000-15CMA300020CMA3000-25CMA3000-50CMA3000-80CA3000-100CmA3000-150CMA3000-200CMA3000-250CMA3000-300CMA3000-6MMA3000-10MMA3000-25MMA3000-50MMA3000-80MMA3000-100MMA3000-60PAA3000-125PAA3000-250PAA3000-500PAA3000-750PAA3000-1kPAA3000-1.5kPAA3000-2kPAA3000-3kPAA3000-4kPAA3000-5kPAA3000-8kPAA3000-10kPAA3000-15kPAA3000-20kPAA3000-25kPAA3000-30kPAA3300-0A3301A3302A3304A3310A3320A3330A3000-00A3000-0A3001A3002A3003A3004A3005A3006A3008A3010A3015A3020A3025A3030A3040A3050A3060A3080A3100A3150A3300-1kPAA3300-3kPA)