壓力開關(guān)說明書共14頁文檔

1、DG型氣體壓力開關(guān)使用說明書請閱讀和保持一個安全的地方解釋符號,1,2,3.=功能?=用法說明所有工作必須在閱讀操作說明后才能進行！警告！不正確的安裝、調(diào)整、修改、操作或維護可能導(dǎo)致傷害或物質(zhì)損失。使用前先閱讀說明書。這個單位必須安裝依照本條例的實施。標(biāo)準(zhǔn)聲明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測試?電源電壓

3、、環(huán)境溫度和外殼一一看類型的標(biāo)簽。?最大介質(zhì)溫度:-15+80°C。在系統(tǒng)暴露于更高的熱應(yīng)力、熱設(shè)備上時壓力開關(guān)必須安裝在上游。DG.B型?正壓時1號位置為進氣DG.U型,DG.H型,DG.N型?正壓時1號或者2號位置為進氣，氣體為空氣、天然氣或者煙氣（其他位置密封），通風(fēng)時氣體從3號或者4號位置離開。?負壓時3號或者4號位置為進氣，氣體為空氣、天然氣或者煙氣（其他位置密封），通風(fēng)時氣體從1號或者2號位置離開。?對于壓差時，用1號或2號和3號或4號，氣體為空氣、天然氣或者煙氣，其他位置密封。?在連接3號和4號位置時使用過濾墊，防止氣體中的雜質(zhì)弄臟電觸點。?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調(diào)整范圍（調(diào)整區(qū)間=土15%調(diào)整范圍最大值）微分切換在最大值和最小值之間設(shè)置切換壓力可能被重置之間的區(qū)別

8、在測試過程中設(shè)定的偏差,根據(jù)EN1854氣體壓力開關(guān)在測試過程中設(shè)定的偏差，根據(jù)EN1854空氣壓力開關(guān)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