Extech Instruments HD755 Bedienungsanleitung

USERGUIDE



HeavyDuty

DifferentialPressureManometer



ModelHD755



HD755-EU-EN V1.7 7/13

Introduction

CongratulationsonyourpurchaseoftheExtechManometerModelHD755.Thisdevicemeasures

gaugeanddifferentialpressureintherangeof±0.500psi.TheHD755offerseleven(11)unitsof

measure(userselectablebyfrontpanelpushbutton)andhasadifferentialinputthatuses

convenientquick‐disconnectfittings.AdvancedfeaturesincludeDATAHOLD,MIN‐MAX‐AVG

RECORDmode,ZERO/OFFSET,AUTOPOWEROFF,andUSBPCinterface.Thismeterisshippedfully

testedandcalibratedand,withproperuse,willprovideyearsofreliableservice.Pleasevisitour

website(www.extech.com)tocheckforthelatestversionofthisUserGuide,ProductUpdates,and

CustomerSupport.



MeterDescription

1. P1input

2. ACadaptorjack

3. P2Input

4. LCDDisplay–Indicatesthemeasurementdata,unitofmeasure,

elapsedtimer,andfunctionsymbolsasdescribedinthismanual

5. USBPCinterfacejack(3.5mm)–Forusewithdataacquisition

software

6. UNITbutton–Presstoselecttheunitofmeasure

7. DIFbutton–Presstodisplaydifferentialpressure.Alsousedto

OFFSETthedisplayedreadings.

8. RECORDbutton–PresstoaccesstheMIN/MAX/AVGrecording

mode

9. HOLD/ZERObutton–Presstofreezethedisplayedreading.Also

usedtozerothedisplay(pressandholduntildisplayshowsallzeroes).

10. BACKLIGHT button–PresstoswitchthedisplaybacklightON.Thebacklightwill

automaticallyturnOFFafter40seconds.

11. POWERbutton–PresstoturnthemeterONorOFF

12. Batterycompartment(onrear)



HD755-EU-EN V1.7 7/13

Display

1. USBdataoutputactive

2. DifferentialPressureMode

3. DataHoldMode

4. Primarydisplay

5. RecordMode

6. MAX/MIN/AVGindicators

7. LowBatteryIndicator

8. Pressureunitofmeasure

9. ElapsedTimer

HD755-EU-EN V1.7 7/13

BasicOperation

MeterPower

TheHD755usesa9Vbatteryforpower.IfthemeterdoesnotswitchonwhenthePOWER

buttonispressedorifthedisplayshowsBAT,replacethebattery.

WhenthePOWERbuttonsispressed,themeterperformsashortself‐testandrevertstothe

settingsinplacewhenthemeterwaslastturnedoff.

AutomaticPower‐offFeature

Inordertoconservebatterylife,themeterhasanautomaticpowerofffeature(after20

minutes).Todefeatthisfeature,pressandholdtheHOLDbuttonwhileturningthemeteron.

ReleasetheHOLDbuttonwhen‘n’appearsonthedisplay.Themeterwillnowremainonuntil

theuserturnsitofforuntilthebatteryweakens.NotethattheAutoPowerOFFfeaturewillbe

reactivatedthenexttimethemeteristurnedoffandthenon.

UnitofMeasure

PresstheUNITbuttontoselecttheunitofmeasure.Thismeterofferseleven(11)unitsof

measureaslistedbelow.



UnitofMeasureDisplayicon

Poundspersquareinchpsi

InchesofMercuryinHg

Milli‐barmbar

MillimetersofMercurymmHg

Kilo‐PascalskPa

KilogramspercentimetersquaredKgcm2

InchesofwaterinH2O

FeetofwaterftH2O

CentimetersofwatercmH2O

BarsBar

Ouncespersquareinchozin2



FittingsConnection

ConnecttubingtotheP1,P2(orboth)inputport(s).Ifbothinputsareused(differentialmode),

themeterdisplaysapositivepressurereadingiftheP1pressureisgreaterthanP2anda

negativereadingifP2isgreaterthanP1.



HD755-EU-EN V1.7 7/13

ZeroAdjustandOffsetfunction

TheunitmustbekeptintheuprightpositionwhenZEROINGorwhentakingmeasurements.To

ZEROthemeter:Beforeuseandwithoutfittingsattachedtothemeter,pressandholdtheHOLD

buttonfor3secondsoruntilthedisplayshowsallzeroes.



ToOFFSETmeterreadings:PresstheDIFbuttonwhiletakingameasurement.Subsequent

readingswillrepresentthedifferencebetweenthecurrentmeasurementandthemeasurement

thatwasonthedisplaywhentheDIFbuttonwaspressed..PresstheDIFbuttonagaintoexitthe

OFFSETfunction.

MIN‐MAX‐AVGRecordModewithElapsedTimer

TheRECORDfunctiontracksthemaximum(MAX),minimum(MIN),andaverage(AVG)readings

withatimestamp.Theelapsedtimerisdisplayedonthelowerright‐handcorneroftheLCDand

informstheuserofthetimeaMAXorMINreadingwasrecorded.

1. PresstheRECORDbuttononce.TheRECindicatorwillappearonthedisplayandthe

displayedelapsedtimerwillstart(HH:MM:SSformat[hours:minutes:seconds]).

2. PresstheRECORDbuttonagaintoviewthehighest(MAX)readingrecordedsincethe

RECORDbuttonwasfirstpressed.TheMAXindicatorandmaximumreadingwillappearon

thedisplay.TheelapsedtimerwillshowthetimeoftheMAXevent.

3. PresstheRECORDbuttonagain,theMINindicatorandtheminimumvaluewillappearon

thedisplay.TheelapsedtimerwillshowthetimeoftheMINevent.

4. PresstheRECORDbuttonagain,theAVGindicatorandtheaveragevaluewillappearonthe

display.Theelapsedtimerwillcontinuetorun.

5. Toreturntonormaloperation,pressandholdtheRECORDbuttonuntilthedisplay

indicatorsREC,MAX,etc.switchoff.

NotethatintheRECORDmode,thebacklightandthepowerbuttonsaretheonlyavailable

functions.

USBPCInterface

Themeterhasabuilt‐inUSBportforusewiththeManometerDataAcquisitionsoftware.The

softwareallowstheusertoview,save,export,andprintreadingsfromtheHD755.Refertothe

documentationincludedwiththesoftwareforcompletedetails.

DisplayedErrorCodes

Thefollowingcodesaredisplayedwhenthemeterencountersanerror.

ERR1:Pressureinputexceedsspecifiedlimits

ERR2:Pressureinputistoolowtoread

ERR3:TheDifferentialPressureinputexceedsspecifiedlimits

ERR4:TheDifferentialPressureinputistoolowtoread

HD755-EU-EN V1.7 7/13

Specifications

GeneralSpecifications

DisplayFourdigitLCDwithfunctionindicators

UnitsofMeasureBAR,mBAR,psi,kg/cm2,mmHg,inchesHg,kPa,feetH2O,inches

H2O,cmH2O,andozin2

Accuracy±0.3%FS+1d(@25°C)

Repeatability±0.2%to0.5%FS

Linearity/Hysteresis±0.3%FS

CombinedAccuracy±1.1%FS

MaximumPressure2psi

Responsetime0.5stypical

InputcircuitDifferentialinputs(P1andP2)

InputPortsTwometal4.8mm,barbedfor1/8"(3.17mm)IDtubing

DataHoldFreezesdisplayedreading

SensorBuilt‐inpiezoelectricsensors

Zero/OffsetfunctionPushbuttonactivation

Samplerate0.5sec.(approx.)

CompatibilityAirornon‐corrosiveandnon‐ionizedgas(notintendedforusewith

liquids)

AutoPowerOFFMeterturnsoffafterapprox.20minutestoconserveenergy(can

bedeactivated)

PCInterfaceBuilt‐inUSBserialinterface

Storageconditions0to60oC(14to140oF);<80%RH

Operatingconditions0to50oC(32to122oF);<80%RH

Batterypower9Valkalinebattery(BATlowbatteryindicator)

Batterylife125hourstypical

Dimensions210x75x50mm(8.2x2.9x1.9”)

Weight280g(9.8oz)

HD755-EU-EN V1.7 7/13

RangeSpecifications

Range/Units(Max.)Resolution

±0.034bar0.001

±34.47mbar0.01

±0.500psi0.001

±0.035Kg/cm20.001

±25.86mmHg0.01

±1.018inchesHg0.001

±3.447kPa0.001

±1.154feetH2O0.001

±13.85inchesH2O0.01

±35.15cmH2O0.01

±8.00ozin20.01



BatteryReplacement

WhenthelowbatteryindicatorBATappearsonthedisplayorifthemeterdoesnotswitchon

whenthePOWERbuttonispressed,itisnecessarytoreplacethebattery.

Toreplacethebattery:

1. Openthebatterycompartmentbyslidingthemeter’srearpanelinthedirectionofthe

embossedarrow.

2. Replacethe9Valkalinebattery

3. Replacethebatterycompartmentcover.



AllEUusersarelegallyboundbytheBatteryOrdinancetoreturnallusedbatteriesto

communitycollectionpointsorwhereverbatteries/accumulatorsaresold.

Disposalinhouseholdtrashorrefuseisprohibited.

Disposal:Followthevalidlegalstipulationsinrespectofthedisposalofthedeviceatthe

endofitslifecycle



OtherBatterySafetyReminders

Neverdisposeofbatteriesinafire.Batteriesmayexplodeorleak.

Nevermixbatterytypes.Alwaysinstallnewbatteriesofthesametype.



Warning: Pressure inputs of 10 psi or higher will damage the instrument. Do not

apply pressure higher than the maximum pressure listed in the specification table

HD755-EU-EN V1.7 7/13

Conversions

UsefulconversionFactors

FromToMultiplier

inofH2OinofHg0.07355

inofH2OcmofH2O2.54

mmofHginofH2O0.03937



Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

ISO‐9001Certified

www.extech.com



Inhaltsverzeichnis

Andere Extech Instruments Messgerät Handbücher

Extech Instruments

Extech Instruments RPM250W Bedienungsanleitung

Extech Instruments

Extech Instruments MA250 Bedienungsanleitung

Extech Instruments

Extech Instruments SDL720 Bedienungsanleitung

Extech Instruments

Extech Instruments HDV-WTX2 Abmessungen

Extech Instruments

Extech Instruments 480823 Bedienungsanleitung

Extech Instruments

Extech Instruments 461920 Bedienungsanleitung

Extech Instruments

Extech Instruments SDL400 Bedienungsanleitung

Extech Instruments

Extech Instruments MA120 Bedienungsanleitung

Extech Instruments

Extech Instruments 433201A Bedienungsanleitung

Extech Instruments

Extech Instruments SDL600 Bedienungsanleitung

Extech Instruments

Extech Instruments EX613 Bedienungsanleitung

Extech Instruments

Extech Instruments 380941 Bedienungsanleitung

Extech Instruments

Extech Instruments 407510 Bedienungsanleitung

Extech Instruments

Extech Instruments HT200 Bedienungsanleitung

Extech Instruments

Extech Instruments UM200 Bedienungsanleitung

Extech Instruments

Extech Instruments CO240 Bedienungsanleitung

Extech Instruments

Extech Instruments MF100 Bedienungsanleitung

Extech Instruments

Extech Instruments HD350 Bedienungsanleitung

Extech Instruments

Extech Instruments 407119 Bedienungsanleitung

Extech Instruments

Extech Instruments 407355-NIST Bedienungsanleitung

Extech Instruments

Extech Instruments EA30 Bedienungsanleitung

Extech Instruments

Extech Instruments LT505 Bedienungsanleitung

Extech Instruments

Extech Instruments 480836 Bedienungsanleitung

Extech Instruments

Extech Instruments 407740 Bedienungsanleitung

Beliebte Messgerät Handbücher anderer Marken

Suaoki

Suaoki D40 Bedienungsanleitung

Elster

Elster BK-G1.6 Bedienungsanleitung

Endress+Hauser

Endress+Hauser Deltabar FMD71 Handbuch

Duratool

Duratool D03128 Bedienungsanleitung

Vega

Vega VEGAPULS 65 Bedienungsanleitung

Tonghui

Tonghui TH2618B Bedienungsanleitung

Tenmars

Tenmars TM-801 Bedienungsanleitung

MSR

MSR 145 Bedienungsanleitung

TPS

TPS WP-82 Bedienungsanleitung

ELMETRON

ELMETRON CP-511 Bedienungsanleitung

PCB Piezotronics

PCB Piezotronics 003C30 Bedienungsanleitung

Tenma

Tenma 72-10465 Bedienungsanleitung

Endress+Hauser

Endress+Hauser Proline Promag 50 Technische Daten

Siemens

Siemens SITRANS F Coriolis FCT030 Stücklistenhandbuch

KLINGER

KLINGER CMF V Series Bedienungsanleitung

EXFO

EXFO FTB-2 Bedienungs- und Wartungshandbuch

Keysight

Keysight M8290A Bedienungsanleitung

ADTEK

ADTEK MW-5 Bedienungsanleitung