防爆热电阻使用说明书

防爆热电阻使用说明书INSTRUCTIONSOFExplosion-proofTHERMALRESISTANCE网址:销售热线:隔爆热电阻Explosion-proofTHERMALRESISTANCE应用应用通常和显示仪表、记录仪表、电子计算机等配套使用。直接测量生产现场存在碳氢化合物等爆炸物的-200℃～特点1、多种隔爆形式,隔爆性能好；2、压簧式感温元件、抗振性能好；3、测量精确度高；4、进口薄膜电阻元件，性能可靠稳定；工作原理隔爆热电阻是利用间隙爆原理，设计具有足够强度的接线盒等部件，将所有会产生火花、电弧和危险温度的零部件都密封在接线盒腔内，当腔内发生爆炸时，能通过接合面间隙熄火和冷却，使爆炸后的火焰和温度传不到腔外，从而进行隔爆。主要技术参数产品执行标准IEC751JB/T8622-1997JB/T8623-1997JB/5518-1991常温绝缘电阻热电阻在环境温度为15-35℃，相对湿度不大于80%，试验电压为10-100V（直流）电极与外套管之间的绝缘电阻≥100MApplicationItisusuallyconnectedwithdisplaymeter,recordingmeterandcomputer,etc,todirectlymeasuretemperatureofliquid,vapor,gasandsolidsurfacerangingfrom-200℃to500Features1Variousexplosion-prooftypes,goodexplosion-proofperformance2Springthermalelementwithgoodshock-resitantperformance3Highmeasuringaccuracy;4ImportedfilmresistorwithhighreliabilityandstabilityOperationTheoryExplosion-proofthermocouplehasajunctionboxofenoughstrengthwithgapsinsideit.Allsparepartswhichmightproducespark,electricdangeroushightemperaturearesealedinthejunctionbox,Whenexplosionwithintheboxhappens,fireandhightemperaturecausedbyexplosioncouldbeextinctedandcooledwiththe,explosionseparationcouldberealized.MainTechnicalParametersExecutiveStandandIEC751JB/T8622-1997JB/T8623-1997JB/5518-1991InsulationResistanceatNormalTemperatureTheinsulationresistancebetweenelectrodeandprotectiontubeofthethermocoupleshallbenolessthan100MΩ.munderconditionthatenvironmenttemperatrueis15-35℃,ralativehumidityisnomorethan80%,andtestingvoltingisD.C.10-100测温范围及允差Measuringrange&Tolerance型号型号Type分度号Graduation测量范围MeasuringRange精度等级Accuracy允许偏差ToleravceWZPPt100-200～500A级±（0.15+0.002）︱t︱B级±（0.30+0.005）︱t︱WZCCu50Cu100-50～100——±（0.30+0.006）︱t︱注：t为感温元件实测温度绝对值Rcmarks:tisabsoiutevabueactuallytestedwiththermalsensor防爆分组形式IndicationofExplosion-proofFunction□Ⅱ□T□温度组别:T1-T6TemperatureGroup:T1-T6隔爆等级:A、B、CExplosion-proofClass:A、B、C工厂用电气设备ElectricEquipmentforPlantd:隔爆型ExplosionSeparationTypeia:本质完全型IntrinsicType电气设备类别ElectricEquipmentCategoryⅠ类——煤矿井下用电气设备Ⅰ-ElectricEquipmentforCoalMineWellⅡ类——工厂用电气设备Ⅱ-ElectricEquipmentforPlant隔爆等级Explosion-proofClass隔爆热电阻的防爆等级按其使用爆炸性气体混ItisdividedintogradeA、BandCaccordingtomaximumtest合物最大试验安全间隙分为A、B、C三级。safetygapinexplosivegascompound.类别类别Category级别Class最大试验安全间隙（MESG）mmSafetyGapIIA0.9≤MESGB0.5＜MESG＜0.9CMESG≤0.5温度组别TemperatureGroup隔爆热电阻的温度组别按其外露部分允许最高ItincludesT1-T6accordingtothemaximum面温度分为T1-T6temperatureofopenpart.温度组别温度组别TemperatureGroup允许最高表面温度℃Max.SurfaceTemperatureAllowedT1450T2300T3200T4135T5100T685型号命名方法TypeNamingMethodWWZP2—240G典型型号示例ModelExamlpleW温度仪表WTemperatureInstrumentZ热电阻RThermalResistance感温元件材料ThermalElementMaterialP铂PPtC铜CCu元件对数Filament无单支blankSimplex2双支2Duplex接线盒形式JunctionBox4防爆式4Explosion-proofType安装固定形式Mounting&Fixing1无固定装置1WithoutFixingDevice2固定螺纹2ThreadedHeadwithFixedFastener4固定法兰4FixedFlange5活络管接头式5ElbowTubeConnector7直形螺纹管接头式7StraightTubeConnector8固定螺纹管接头式8FixedThreaded-tubeConnector9活动螺纹管接头式9MovableThreaded-tubeConnector保护管直径ProtectionTubeDiameter0Φ160Φ16工作端形式MeasuringEndG变截面GVaribleCrossSection 防爆级别：Explosion-proofClassEXdII□T□EXiaII□T□防护等级：ProtectionClassIP65接线盒形式JunctionBoxEXdII□T□EXiaII□T□直接连接头StraightConnector代号Code代号CodeMDD1dhHTH49AM27*2Φ47Φ28Φ183090TH49BM33*2Φ55Φ36Φ2430150TH49CNPT1/2Φ39Φ27Φ163090TH49DNPT3/4Φ47Φ31Φ203590TH49ENPT1Φ47Φ41Φ3040150代号Code代号CodeMDD1D2dhHTH48AM12*1.5Φ32Φ18Φ12Φ72760.120TH48BM16*1.5Φ36Φ18Φ14Φ72780TH48CM20*1.5Φ40Φ18Φ14Φ72760TH48DM27*2Φ47Φ28Φ22Φ173260TH48EM33*2Φ55Φ36Φ30Φ2134120TH48FNPT1/2Φ39Φ27Φ21Φ163560120TH48GNPT3/4Φ47Φ31Φ25Φ2040TH48HNPT1Φ47Φ41Φ35Φ3045运输与贮存热电阻及其附件在安装前,必须贮存在不受震动和碰撞的地方。最合适的贮存场所条件为环境温度10-35℃，相对湿度不大于80%，周围空气中不应含有可能使仪表零件腐蚀的介质。热电阻在长距离运输过程中应仔细的包装好。可能发生的故障及修理序号序号故障现象可能原因修理方法1显示仪表显示值比实际值偏低或示值不稳定保护管内有水或接线盒内有金属屑、灰尘或热电阻短路倒出水或清除灰尘，并将潮湿部分加以干燥处理；提高绝缘（不能火烤）。用万用电表检查断路或接地的部位，并清除之。2显示仪表显示值无限大热电阻断路用万用电表检查断路部位，确定是连接导线还是感温元件断路。如是感温元件断路应进行更换。3显示仪表显示值下限值热电阻短路显示仪表接线错误用万用电表检查确定短路部位，如是感温元件断路应进行修复或更换。重新连接导线。StorageandtransportationThermalresistanceanditsannextotheinstallation,theymustbestoredinaplacefreefromvibrationandimpact.Themostappropriateconditionsforambienttemperaturestoragesites10-35℃,relativehumidityofnotmorethan80%ambientairshouldnoThermalresistanceinlong-distancetransportationprocessshouldbecarefullypackaged.TroubleshotingorderorderTroublePossiblecauseRemedy1DisplayInstrumentdisplayedvaluethantheactualvalueindicationofloworunstableProtectionofwaterpipeoraterminalboxwithmetalfilings,dustorheatresistanceshortcircuitpouringwaterorclearthedust,andsomeofthemdryandwetprocessing;increasedinsulation(