gdsd500射频导纳物位开关

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1、GDSD500射频导纳物位开关GDSD500RADIOFREQUENCY(RF)ADMITTANCELEVELCONTROLLER概述IntroductionGDSD500系列射频导纳物位开关是一种新颖的物位测量仪表，它采用先进的射频导纳技术，克服了电容式物位计不能消除导电挂料影响的缺陷，仪表具有运行可靠，适用于几乎所有工业现场。仪表还具有安装方便，免维护，低价位等特点,广泛用于石油、化工、冶金、医药、电力、食品、造纸等工业领域。GDSD500seriesRFadmittancelevelcontrollerisanewlevelins

2、trument.ItadoptsadvantageRFadmittancetechnologyandovercomesthedefectthatcapacitiveleveltransmittercan'teliminatetheinfluenceofconductivccoatingonsensor.Duetoitsstableoperating,itisusedinalmostalltheindustrysite.Witheasyinstalling、nomaintainence、lowprice，theinstrumentisap

3、pliedforpetroleum、chemicalengineering、metallurgy、pharmacy、electricpower、foodstuffandpaperproduct.结构原理ConstructionPrinciple该物位开关由传感器单元和电子单元组成。传感器单元主要包括三部分：测量探极、屏蔽极及接地端。物料的高度反映为探极与容器壁间导纳的变化，当物料到达开关工作点时，电子单元作出反应，驱动继电器动作，输出开关信号。屏蔽极可防止由于电极上有挂料而产生误动作信号，仅当物料真正达到设置点时，继电器才输出信号。Th

4、econtrollerconsistofsensorandcircuit.Thesensorhasthreeparts:measuringdetector、shieldingdetectorandgroundterminal.Thechangeofadmittancebetweendetectorandtankwallreflectstomaterialheight.Whenmaterialheightreachscontrollerworkingpoint,electricpartactstomaketherelayoutputswi

5、tchsignal.Theshieldingdetectorcanpreventconductivccoatingonsensorfromerroraction.Onlymaterialheightreachssetpointreally,therelayoutputsthesignal.参数Parameters特点：开关控制，射频导纳原理，NULL-KOTE抗粘附电子线路。Characteristic:switchcontrol,RFadmittanceprinciple,NULL-KOTEresist-adherenceelectr

6、iccircuit电源：220VAC50/60Hz或24VDC100mAPower:220VAC50/60Hzor24VDC100mA继电器容量：DPDT，117/220VAC,5A无感3A有感Relaycapacity:DPDT,117/220VAC,5Anon-inductive3Ainductive灵敏度：小于0.3pFSensitivity:lessthan0.3pF探头耐温：-184℃～+260℃DetectorratingTemp.:-184℃～+260℃电路部分耐温：-40℃～+80℃CircuitpartratingTe

7、mp.:-40℃～+80℃失电保护模式：采用高低模式，现场可调Fail-Safe:adopthigh-lowmode,adjustableatsite延时可调：0-30秒Delayadjustable:0-30s防爆等级Explosionproofclassification:本安型Intrinsicallysafetype:ExiaIICT4-CT6；隔爆型ExplosionprooftypeExdIICT4-CT6型号规格表Model&SpecGDSD500-射频导纳物位开关RFadmittancelevelcontroller　　

8、　224VDC供电方式PowerSupply　3220VAC　A标准灵敏度　　standardsensitivity电路单元灵敏度Circuitsensitivity　B高灵敏度highsensitivit