压力开关说明书共14页文档

1、DG型气体压力开关使用说明书请阅读和保持一个安全的地方解释符号,1,2,3.=功能?=用法说明所有工作必须在阅读操作说明后才能进行！警告！不正确的安装、调整、修改、操作或维护可能导致伤害或物质损失。使用前先阅读说明书。这个单位必须安装依照本条例的实施。标准声明We,themanufacturer,herebydeclarethattheproductsDG.,markedwithproductIDNo.CE0085AP0467,complywiththeessentialrequirementsofthefollowingDirectives:-90/396/EECinconjunctionw

2、ithEN1854,73/23/EECinconjunctionwiththerelevantstandards.Therelevantproductscorrespondtothetypetestedbythenoti?edbody0085.Comprehensivequalityassuranceisguaranteedbyacerti?edQualitySystempursuanttoDINENISO9001accordingtoannexII,para-graph3ofDirective90/396/EEC.ElsterKromschr?derGmbH,Osnabruck测试?电源电压

3、、环境温度和外壳一一看类型的标签。?最大介质温度:-15+80°C。在系统暴露于更高的热应力、热设备上时压力开关必须安装在上游。DG.B型?正压时1号位置为进气DG.U型,DG.H型,DG.N型?正压时1号或者2号位置为进气，气体为空气、天然气或者烟气（其他位置密封），通风时气体从3号或者4号位置离开。?负压时3号或者4号位置为进气，气体为空气、天然气或者烟气（其他位置密封），通风时气体从1号或者2号位置离开。?对于压差时，用1号或2号和3号或4号，气体为空气、天然气或者烟气，其他位置密封。?在连接3号和4号位置时使用过滤垫，防止气体中的杂质弄脏电触点。?DG.B,DG.Uswitc

4、hwithrisingpressure.?DG.Hswitchesandlocksoffwithrisingpressurewithmanualreset.?DG.Nswitchesandlocksoffwithfallingpressurewithmanualreset.?Fitanupstreamrestrictorifthesystemissubjecttogreatly?uctuatingpressures（seeacces-sories）.?Theservicelifewillbeshorterifsubjecttoozoneconcentrationsexceeding200g/m

5、3.Installation?Fittingpositionasrequired,pref-erablywithdiaphragmvertical,withunobstructedviewoftheadjustmentdial.Ensurethatnodirtormoisturecanpenetrateopenventilationports.?Thehousingmaynotcontactmasonry.Minimumclearance20mm.?AvoidsubjectingtheDGtostrongorviolentvibrations.?Condensationmustnotbeall

6、owedtogetintothehousing.Atsubzerotemperaturesmalfunctions/failuresduetoicingcanoccur.?Whenusingsiliconetubes,onlyusesiliconetubeswhichhavebeensuf?cientlycured.?Continuousoperationathightemperaturesacceleratestheageingofelastomermaterials.?Protectfromdirectsunlight(evenwithIP65).DG.B.S?Donotconnectga

7、sbutonlyO2orNH3tothepositivepressureport1.Ensurethatnogreaseisusedduringinstallation.1 DGFlushthepipework.2 Usesuitablesealingmaterial.Ifdirtcanaccumulateatport3or4,usethe?lter,OrderNo.74916199.4FittheDG.TightnesstestAdjustingtheswitchingpressureps调整范围（调整区间=土15%调整范围最大值）微分切换在最大值和最小值之间设置切换压力可能被重置之间的区别

8、在测试过程中设定的偏差,根据EN1854气体压力开关在测试过程中设定的偏差，根据EN1854空气压力开关DG6B,DG6U0,4-6mbar0,2-0,3mbar土15%土15%oder/or/ou/of/oppure/6土0,1mbarDG10B,DG10U1-10mbar0,25-0,4mbar土15%土15%DG30B,DG30U2,5-30mbar0,35-0,9mbar土15%土15%DG50B,DG50U2,5-50mbar0,8-1,5mbar土15%土15%DG150B,DG150U30-150mbar3-5mbar土15%土15%DG500B,DG500U100-500mba

9、r8-17mbar土15%土15%DG10H,DG1-100,4-1土15%土15%10NmbarmbarDG50H,DG50N2,5-50mbar1-2mbar土15%土15%DG150H,DG150N30-150mbar2-5mbar土15%土15%DG500H,DG500N100-500mbar4-17mbar土15%土15%1Disconnectthesystemfromtheelectricalpowersupply.WiringDG?24-250VAC:I=0.05-5A,cos?=1,I=0.05-1A,cos?=0.6;DG.G?12-250VAC:I=0.01-5A,cos?

10、=1,I=0.01-1A,cos?=0.6;12-48VDC:I=0.1-1A.?IftheDG.Ghasswitchedavoltage>24Vandacurrent>0.1Aonce,thegoldplatingonthecontactswillhavebeenburntthrough.Itcanthenonlybeoperatedatthispowerratingorhigherpowerrating.?Contacts3and2closewhensubjecttoincreasingpressure.Contacts1and3closewhensubjecttofallin

11、gpressure.1Disconnectthesystemfromtheelectricalpowersupply.5Functioncheck?Werecommendafunctioncheckonceayear.AccessoriesFasteningsetConnectingset?Formonitoringtheminimum/maximuminletpressurepe.ExternaladjustmentPIAtestkeyRestrictorori?ceTubeset?foraironlyStandardcouplerplugPilotlampredorgreenfor110/

12、120VACor220/250VACLEDred/greenfor24VDC/ACGaspressureswitchDG.T,DG.HT,DG.NTfornaturalgas,cleancokeovengas,LPG,biologicallyproducedmethaneandairOperatinginstructionsInstallingwiringadjustingbyauthorizedtrainedpersonnelonly!WARNING!Improperinstallation,adjustment,modification,operationormaintenancecoul

13、dleadtoinjuryordamage.Alladjustmentsmustbemadebyaqualifiedtechnician.WiringmustcomplywithlocalcodesandtheNationalElectricalCodes.Topreventthepossibilityofpropertydamageturnoffelectricalpower,depressurizeinstallation,ventfluidtoasafeareabeforeservicing.DG.T,DG.HT,DG.NTfor?excesspressure,connection1or

14、4,?negativepressure,connection2,?differentialpressure,connection1or4and2pmaxtoatmosphereormax.differentialpressurebetweenupperandlowerchamber:8.5psi(600mbar)Ambientandgastemperature:-40to+140°F(-40to+60°C)(DG.S:+5to+140°F(-15to+60°C)Atanambienttemperatureresp.gastemperaturebelow-

15、22°F(-30°C)theadjustedswitchpointmaychangeperceptibly.?Theservicelifewillbeshorterifsubjecttoozoneconcentrationsexceeding200g/m3.Accessoriesseebackpage.Installingpressureswitchintothepipework?Mountingpositionarbitrary,butpreferablywithhorizontalorverticaldiaphragmwithclearviewtograduatedri

16、ngpleasemakesurethatdirtorhumiditydoesnotgetintotheconnectionsopenforaeration-?thehousingmustnottouchitssurroundingwalls-minimumdistance1"(25mm)-?avoidsubjectingthegaspressureswitchtostrongorviolentvibrations.Whenusingsiliconetubes,onlyusesiliconetubeswhichhavebeensufficientlyafterbaked.?Protec

17、tgaspressureswitchfromdirectsunlight.?Ifdirtcanaccumulateatconnection4,usethefilter,OrderNo.74916199. Usesuitablejointingcompound.ExcesspressuretestTypeofgas:gas,air,fumesConnectexcesspressuretoconnection1or4,1/4NPT-?max.+8.5psig(+600mbar)-?connection2muststayopen.NegativepressuretestTypeofgas:air,f

18、umesConnectnegativepressuretoconnection2,1/8NPT,flatgasket?max.-8.5psig(-600mbar)一?connection1or4muststayopen?connection2joinstheupperchamberwiththemicroswitch,therefore,donotconnecttogascarryingpipes!DifferentialpressuretestTypeofgas:air,fumesConnectthehigherpressureto1or4,1/4NPT-connectthelowerpre

19、ssureto2,1/8NPT-?connection2joinstheupperchamberwiththemicroswitch,therefore,donotconnectgascarryingpipes! Checkforsoundnesswhentestingthesystemasawhole-testpressure:1.5timestheoperatingpressure-max.29psig(2bar)foraperiodoflessthan15minutes,usedetergentatpipeconnections.WiringofpressureswitchWARNING

20、!Ensurethatthereisnovoltageinthesupplylinewhenyoumaketerminalconnections. Unscrewcover. Removecoverplate.Passwiresthrough1/2NPTconduitandconnectterminals2xAWG18(2x1.5mm2).?Ensuregoodgroundconnectionviaterminal.?Microswitch:NO2-COM3closesonpressureincreaseNC1-COM3opensonpressureincreaseElectricalData

21、Switchingcapacity:forvoltages30240VACusepressureswitchwithsilver-platedplatedcontacts(standardversion);I=5Aresistive,I=0.5Awithcos?=0.6.?=0.6.Contactrating:6A,Forsmallvoltages<30VACorDCusespecialversionwithgold-platedcontacts-DG.TG-I=0.1resistive,I=0.05AwithcosShort-circuitproof:quick-actionfuseu

22、pto8Aacc.toUL198GTypeofenclosure:NEMA3(IP54)1/2NPTconduitconnectionConnection:screwterminals2xAWG18(2x1.5mm2)AdjustingpressureswitchtotherequiredswitchingpressureThesetswitchingpressureisobtained:withambienttemperature32Fto140°F(0°Cto60C)withincreasingpressure?withverticaldiaphragm:accurat

23、ely,withhorizontaldiaphragm:theswitchingpressureisapprox.0.08W.C.(0.2mbar)higherthanthereading?withsuspendeddiaphragm:theswitchingpressureisapprox.0.08"W.C.(0.2mbar)lessthanthereading.Thereadingsareapproximations.Adjustment-exampleDG50T3=pressuretestpointThesettingof6"W.C.(15mbar)appliesfo

24、r?excesspressureof+6"W.C(+15mbar),?negativepressureof-6"W.C.(-15mbar)or?differentialpressureof6”W.C.(15mbar)(+10”W.C.(+25mbar)atconnection1or4,+4"W.C.(+10mbar)atconnection2)Settingofswitchingpressure: turnrequiredvalueonthescalediskoverthepointer.CheckingofsetswitchingpressureMeasureexactswitchingpoint:usingamanometerattestpoint3forexcesspressureandbymeteringthevoltageatNC1orNO2areifnecessary,re-adjustscalediskthereadingsapproximations!Putcoverplateonandpressfirmly,putcoverbackonandscrewtight-firstthetwoscrewsbesidethescaledisk.Gaspressure