DM8252 8252RS Manual Fin081109:Layout 1

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DM8252 8252RS Manual fin081109:Layout 1DM8252/8252RSUSER’S MANUALHIGH RESOLUTIONDIGITAL MANOMETERDM8252DM8252RSINCLUDES 4 RUBBERSTOPPERS FOR DUCTSMOKE DETECTORS9/23

DM8252 8252RS Manual fin081109:Layout 1FZS ] kag Xad bgdUZSe[ Y fZ[e 6[Y[fS ?S a WfWd FZ[e [ efdg W f [e SbadfST W TSffWdk abWdSfWV bdWeegdWWSegd[ Y VWh[UWFZW ?S a WfWd [e [VWS Xad :H35!DfWUZ [U[S e WSegd[ Y bdWeegdW WhW WV[US Wcg[b W f Ua bgfWdbWd[bZWdS e b Wg Sf[U Ua fda eINTRODUCTIONFZW WfWd i[ V[eb Sk S 56eWY W fe iZW [f [e X[def fgd WV a Xad Sbbdaj % eWUa Ve FZagYZkag [YZf eWW 63F3 A997DK!?!6 D7 3H9 fZWeW eWY W feSdW af ShS[ ST W Xad fZ[e WfWdFZW 56 [e V[h[VWV [ fa fia V[ef[ UfeWUf[a e, A W SdYW bd[ Sdk fabeUdWW S V a W e S Wd d[YZfTaffa eUdWW dW Sf[hW 5 aU] FZW V[eb Sk SdWSe ]WWb kagUa efS f k gbVSfWV i[fZ fZWbdWeegdW WSegdW W feFZW WfWd WSegdWe,9SgYW bdWeegdW S WSegdW W f aX bdWeegdW fZSf [edWXWdW UWV fa S T[W f bdWeegdW6[XXWdW f[S bdWeegdW S WSegdW W f aX V[XXWdW UW aXfia bdWeegdWe29/23

DM8252 8252RS Manual fin081109:Layout 1Meter has 5 selectable units ofmeasure: InH2 O, psi, mbar, bar,mmH 2 O.Please check tubing is not leakingor damaged before using.CONVERSION & RESOLUTION1mbar Inch of H2Opsimbarbarmm of 11MANOMETER QUICK STARTUnscrew battery compartment onrear of instrument and fit PP3 (orEquivalent)battery replace coverand secure with screw.PressI to switch the instrument on.Press UNIT to select unit of pressuremeasurement required. To zero bypressing HOLD and hold for threeseconds , the instrument now readsgauge pressure.Press DIF for differential pressuremeasurement.39/23

DM8252 8252RS Manual fin081109:Layout 1HOLDBdWee fa XdWWlW dWSV[ Y BdWee SYS[ fa US UW XWSfgdWHOLDBdWee fa efSdf U aU] bdWee RECRECSYS[ fa eWW f[ W e[ UW efSdf aXdWUadV[ Y aX ?Sj dWSV[ Y BdWee RECSYS[ fa eWW f[ W e[ UW efSdf aXdWUadV[ Y aX ?[ dWSV[ Y BdWee[ Y SYS[ dWfgd e fa dWS f[ WRECdWUadV[ Y aVWBdWee S V Za V Xad fZdWWRECeWUa Ve fa fgd U aU] XWSfgdW aXXNote:FZW U aU] XWSfgdW [e ShS[ ST W i[fZYSgYW bdWeegdW a k af V[XXWdW f[S FZW [ efdg W f i[ Sgfa Sf[US kei[fUZ aXX SXfWd " [ gfWe g Weee WWb aVW [e V[eST WV eWW bSYW '3GFA BAI7D A88BdWee fa V[eb Sk TSU] [YZf;f [ g [ SfWe Xad Sbbdaj[ SfW k %"eWUa Ve S V Sgfa Sf[US k ei[fUZWeaXX HOUNITLDRECREL49/23

DM8252 8252RS Manual fin081109:Layout 1CONTROLS AND INDICATORS12131514HOLDREL11DIFDATALOGGER254318REC AVGMAX MIN BATinH 2 Opsi109mbarbarmmH2 O761. Primary Data Screen displayspressure value.2. "-" Minus pressure display.3. MAX MIN pressure recorded.4. REC starts recording mode anddisplays max./min. pressurerecorded.5. AVG Average records (N/A).6. DC power in Jack.7. RS232 output port.8. H/M/S 88:88:88 displays time forHour / Minute / Second.9.Pressure unit indication.10. BAT Battery low indicator.11. DIF Differential pressure mode.12. " " Positive pressure connection.13. "-" Negative pressure connection.14. HOLD Freezes pressure reading.15. REL (N/A)Establish a relative zero for theprimary screen information.59/23

DM8252 8252RS Manual fin081109:Layout 1"-" Negativepressure" " PositivepressureAUTO POWER OFF(SLEEP FUNCTION)FZ[e [ efdg W f i[ Sgfa Sf[US keZgf aXX [ Sbbdaj " [ gfWe XadWhWdk baiWd a 8ad dWUadV[ Y adabWdSf[ Y ahWd a YWd bWd[aVe aX f[ W kag US V[eST W fZW e WWb aVW TkHOLDbdWee[ Y S V e[ g fS Wage kITWXadW baiWd[ Y a 3 "n" i[ SbbWSd [ fZW [VV W aX fZWeUdWW Sf iZ[UZ f[ W kag US dW WSeW HOLDfZW Tgffa EWW 8[Y 3 FZWV[eST W e WWb aVW i[ TW [ hS [V SXfWdbaiWd aXXFig. AMODE OPTIONS6W WfW S V dWb SUW i[fZ bdaYdS ST W geWd eW WUfST W efSdf gb aVWFZW V[eb Sk i[ VWXSg f fa fZW aVW Sef geWV FZW Xa ai[ Y fST W [efe fZW aVWe aXabWdSf[a fZSf US TW [ ha]WV TkbdWee[ Y fZW Tgffa [ V[USfWV69/23

DM8252 8252RS Manual fin081109:Layout 1RECHOLDDIFUNITHOLDl/ DISABLE SLEEP MODE/ ZERO SETTING/ SELECT UNIT / SKIP CAL.Hold 2 sec.HOLDIFgd e [ efdg W f a VWXSg f eWff[ Y S V aXX REC BdWee a W fSd[ k S V dW Sf[hW U aU] efSdfe [ fZW aiWd d[YZf eUdWW REC [e V[eb SkWV [ fZW [VV W WXf aX eUdWW 8[Y 4 AfZWd Tgffa Xg Uf[a e SdW aU]WV agf WjUWbfPower, Unit and Backlight.BdWee a W fSd[ k SYS[ S V fZW g [f UkU We fZdagYZ MAX 8[Y 5 S V MIN 8[Y 6 S V TSU] fa UgddW f bdWeegdW- fZW dWUadVaVW [e V[eb SkWV a fZW 56 RECBdWee S V Za V Xad % eWUa Vefa fgd aXX fZW dWUadV Xg Uf[a S VdWfgd fa ad S aVWFig. BinH 2 O7psimbarbarmmH2O9/23

DM8252 8252RS Manual fin081109:Layout 1Fig. CinH 2 OpsimbarbarmmH2OinH 2 OpsimbarbarmmH2OFig. DHOLDBdWee a W fSd[ k fa XdWWlW fZWbdWeegdW dWSV[ Y 8[Y 7 Fig. EinH 2 ODIFpsimbarbarmmH2OBdWee a W fSd[ k DIF SbbWSde a fab aX fZW 56 S V fZW V[eb Sk[ V[USfWe fZW dW Sf[hW lWda dW Sf[hWlWda USgeWe fZW hS gW aX fZW V[eb Sk fa eZai Se "0.0" a k fZWS ag f aX bdWeegdW UZS YW i[ TW[ V[USfWV BdWee a W fSd[ k SYS[ S V fZW g [f dWfgd e fa fZW ad S aVW aX bdWeegdW V[XXWdW f[S eWW 8[Y 8 Fig. FinH 2 O8psimbarbarmmH2O9/23

BdWee a W fSd[ k S V fZW g [fe i[ UkU W fZdagYZ "mbar", " bar", "mmH 2O" iZ[UZSdW [ V[USfWV a fZW Taffa aX fZW V[eb Sk EWW 8[Y 9 :

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DM8252 8252RS Manual fin081109:Layout 1MAINTENANCEFZW WfWd [e US [TdSfWV [ ZageWTWXadW eZ[bb[ YIZW bdabWd k S[ fS[ WV fZWWfWd i[ S[ fS[ [fe SUUgdSUkebWU[X[USf[a fa W egdW kagd WfWd[e bWdXad [ Y Sf [fe bWS] eW V [f fafZW XSUfadk ad S cgS [X[WV [ efdg W fUS [TdSf[a XSU[ [fk Xad S gS US [TdSf[a ;f [e dWUa W VWV fa S iSke eWf lWdaTWXadW fS][ Y S WSegdW W f DWXWd falWda eWff[ Y bdaUWVgdW a bSYW # Cleaning:GeW S VS b U afZ S V [ V eaSb fa U WS fZW USeW aX fZW ?S a WfWd Va af geW ZSdeZ VWfWdYW fe ad STdSe[hWeSe fZWeW Sk Sd fZW X[ [eZ ad VS SYW fZW g [f e USeW i[fZ S SVhWdeWUZW [US dWSUf[a CALIBRATION MODE5S [TdSf[a aVW [e a k Sbb [UST W Xad S efS VSdV S a WfWd US [TdSfad ad S k cgS [X[WV WfWd US [TdSf[a XSU[ [fk Xad S gS US [TdSf[a # 8[def S gS k eWf fZW V[eb Sk fa lWda a Sbb [WV fa fZW Ua WUfad dWXWd fa fZW S gS lWda bdaUWVgdW a bSYW # 13.109/23

DM8252 8252RS Manual fin081109:Layout 1 Fgd fZW WfWd aXXREC% BdWee e[ g fS Wage k"CA" SbbWSde a fZW V[eb Sk EWW 8[Y ; fZW WfWd W fWde fa fZW US [TdSf[a aVW S]W egdW fZW g [fe eWff[ Y a "psi" fa efSdf bae[f[hW bdWeegdW US [TdSf[a Fig. Ips i& FZW WfWd ZSe S # ( be[ US [TdSf[a ba[ f Tk VWXSg f FZW SV\gefST W bdWeegdW dS YW [e Xda # ' fa # ) ;X US [TdSf[a bdWeegdW eagdUW [e af # ( be[ [ UdWSeW Tk bdWee[ Y6[X ]Wk ad VWUdWSeW Tk bdWee[ Y ]Wk fa eWf US [TdSf[a ba[ f Se dWcg[dWV' EShW fZW US [TdSf[a ba[ f TkREC bdWee[ Y ]Wk"SA" S V e S "CA" SbbWSde a fZW V[eb Sk EWW 8[Y [ eWUa Ve fZW WfWd Sgfa e][be fa fZW WYSf[hW bdWeegdW - ba[ f Xad Wjf US [TdSf[a aVWFig. Jps i119/23

DM8252 8252RS Manual fin081109:Layout 1( 8a ai fZW eS W bdaUWVgdW Se efWb & Xad fZW WYSf[hW bdWeegdW US [TdSf[a ba[ f FZW 56 ai V[eb Ske "-1.600" S V e S "CA" EWW 8[Y Va fZW WUWeeSdk US [TdSf[a X[YgdW dWXWd fa kagd bdWeegdW efS VSdV [X WWVWVFig. Kps i) 3YS[ eShW fZW US [TdSf[a ba[ f Tk REC bdWee[ Y ]Wk"SA" S V "CA" SbbWSde [ eWUa Ve S V fZW bdWee[ Y UNIT , "End" S V "CA" SbbWSde [ S afZWd eWUa Ve fZW WfWd fgd e TSU] fa fZW ad S aVW EWW 8[Y Fig. Lps iUNIT;X kag US f eShW Tk bdWee[ Y ]Wk[ W a "SA" SbbWSde b WSeW UZWU], S fZW US [TdSf[a bdWeegdW eagdUW[e TWfiWW # ' S V # ) ad T [X kag W fWdWV fZW UaddWUf bae[f[hW bdWeegdW ad WYSf[hW bdWeegdW ;X kag iS f fa e][b bae[f[hW US [TdSf[a iZW [ fZW US [TdSf[a UNITaVW bdWee fa e][b fa WYSf[hW US [TdSf[a ba[ f129/23

DM8252 8252RS Manual fin081109:Layout 1Calibration point referencebe[5S [TdSf[a DWa W V dS YWba[ f "p # ( # 'p# )MANUAL ZERO SETTINGIZW kag eWf fZW V[eb Sk fa lWda a bdWeegdW Sbb [WV fa fZW Ua WUfad bdWee HO LD Tgffa Xad eWUa Ve ai fZW WfWd V[eb Ske "- 0 .000" Xda d[YZf fa WXf EWW 8[Y ? fZW fZW 56 V[eb Sk eZaie S ad S aVWFig. MinH 2 OpsimbarbarmmH2OTROUBLESHOOTING Power on but no display. 5ZWU] fZW TSffWdk Ua WUf[a e DWb SUW i[fZ S Wi TSffWdk ad SffSUZ abf[a S 35 SVSbfadBAT indication. DWb SUW i[fZ S Wi TSffWdk iZW 56 V[eb Ske BAT Sf fZW [VV W TaffaNo Display. ?S]W egdW TSffWdk [e af VWSV ;X fZW V[eb Sk V[eSbbWSdUZWU] [Xe WWb aVW [e SUf[hW DWXWdfa fZW V[eST W e WWb aVW Xg Uf[a Xad S a Y f[ W geW bSYW ' Ad UZWU] fZSf fZW fgT[ Y [e Ua WUfWVfa fZW WfWd f[YZf k139/23

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