Extech Instruments HD755-NIST Manual de usuario

UserManual



HeavyDuty

DifferentialPressureManometer



ModelHD755



HD755-en-GB_V1.8 9/16

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-en-GB_V1.8 9/16

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-en-GB_V1.8 9/16

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-en-GB_V1.8 9/16

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ModewithElapsedTimer

TheRECORDfunctionrecordsasingle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.TheMin,Max,andAVGdatacannotbeexportedtothePC.

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,recordandprintreadingsfromtheHD755whileitisconnected

directlytoaPC.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-en-GB_V1.8 9/16

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-en-GB_V1.8 9/16

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.



Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriatecollection

sites,theretailstorewherethebatterieswerepurchased,orwhereverbatteriesaresold.

Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuserisobligatedto

takeend‐of‐lifedevicestoadesignatedcollectionpointforthedisposalofelectricaland

electronicequipment.



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-en-GB_V1.8 9/16

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



Este manual sirve para los siguientes modelos

Tabla de contenidos

Otros manuales de Instrumento de medición de Extech Instruments

Extech Instruments

Extech Instruments 451112 Manual de usuario

Extech Instruments

Extech Instruments RH520B Manual de usuario

Extech Instruments

Extech Instruments 407764 Manual de usuario

Extech Instruments

Extech Instruments 380950 Manual de usuario

Extech Instruments

Extech Instruments MA250 Manual de usuario

Extech Instruments

Extech Instruments SDL470 Manual de usuario

Extech Instruments

Extech Instruments 407119-NIST Manual de usuario

Extech Instruments

Extech Instruments MA640 Manual de usuario

Extech Instruments

Extech Instruments 461995 Manual de usuario

Extech Instruments

Extech Instruments ExStik II EC400 Manual de usuario

Extech Instruments

Extech Instruments RH390 Manual de usuario

Extech Instruments

Extech Instruments MF100 Manual de usuario

Extech Instruments

Extech Instruments SDL710 Manual de usuario

Extech Instruments

Extech Instruments 380941 Manual de usuario

Extech Instruments

Extech Instruments CO15 Manual de usuario

Extech Instruments

Extech Instruments UM200 Manual de usuario

Extech Instruments

Extech Instruments 461830 Manual de usuario

Extech Instruments

Extech Instruments MO230 Manual de usuario

Extech Instruments

Extech Instruments 401027 Manual de usuario

Extech Instruments

Extech Instruments 380460 Manual de usuario

Extech Instruments

Extech Instruments MO300 Manual de usuario

Extech Instruments

Extech Instruments TH10 Manual de usuario

Extech Instruments

Extech Instruments MA150 Manual de usuario

Extech Instruments

Extech Instruments 480823 Manual de usuario

Manuales populares de Instrumento de medición de otras marcas

Suaoki

Suaoki D40 Manual de usuario

Elster

Elster BK-G1.6 Manual de usuario

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manual

Duratool

Duratool D03128 Manual de usuario

Vega

Vega VEGAPULS 65 Manual de usuario

Tonghui

Tonghui TH2618B Manual de usuario

Tenmars

Tenmars TM-801 Manual de usuario

MSR

MSR 145 Manual de usuario

TPS

TPS WP-82 Manual de usuario

ELMETRON

ELMETRON CP-511 Manual de usuario

PCB Piezotronics

PCB Piezotronics 003C30 Manual de usuario

Tenma

Tenma 72-10465 Manual de usuario

Endress+Hauser

Endress+Hauser Proline Promag 50 Especificaciones técnicas

Siemens

Siemens SITRANS F Coriolis FCT030 Manual de lista de piezas

KLINGER

KLINGER CMF V Series Manual de usuario

EXFO

EXFO FTB-2 Manual de operación y mantenimiento

Keysight

Keysight M8290A Manual de usuario

ADTEK

ADTEK MW-5 Manual de usuario