Model No. UTG-2800

21 Industrial Ave

Upper Saddle River, NJ. 07458 (201) 962-7373

www.phase2plus.com

1 Overview ......................................................................... 3

1.1 Product Specifications ......................................... 3

1.2 Main Functions ..................................................... 4

1.3 Measuring Principle ............................................. 4

1.4 Configuration ....... Error! Bookmark not defined. 1.5 Operating Conditions........................................... 4

2 Structure Feature .......................................................... 4

2.1 Measurement Screen .......................................... 5

2.2 Keypad Definitions ............................................... 6

3 Preparation ..................................................................... 7

3.1 Transducer Selection........................................... 7

3.2 Condition and Preparation of Surfaces ............ 9

4 Operation ........................................................................ 9

4.1 Power On/Off ........................................................ 9

4.2 Probe Zero ............................................................ 9

4.3 Sound Velocity Calibration ............................... 10

4.4 Making Measurements ...................................... 12

4.5 Scan mode .......................................................... 13

4.6 Changing Resolution ......................................... 13

4.7 Changing Units ................................................... 13

4.8 Memory Management ....................................... 13

4.9 Data Printing ....................................................... 14

4.10 Beep Mode ....................................................... 14

4.11 EL Backlight ...................................................... 15

4.12 Battery Information .......................................... 15

4.13 Auto Power Off ................................................. 15

4.14 System Reset ................................................... 15

4.15 Connecting to a Computer ............................. 15

5 Servicing ....................................................................... 15

6 Transport and Storage ................................................ 15

Appendix A Sound Velocities ........................................ 29

Appendix B Applications Notes .................................... 16

1Overview

TheUTG‐2800isadigitalultrasonicthicknessgauge.Basedonthesame

operating principles as SONAR, the instrument is capable ofmeasuring the

thicknessofvariousmaterialswithaccuracyashighas0.001”. It is suitable

fortestingavarietyofmetallicandnon‐metallicmaterials.

1.1ProductSpecifications

1) Display：4.5digitsLCDwithbacklight.2) MeasuringRange：0.030”–12.0”(0.75～300mm)(inSteel).3) SoundVelocityRange:3280‐32805ft/s(1000~9999m/s).4) Resolution：0.001”/0.01mm(selectable) 5) Accuracy： (±0.5%Thickness+0.001”)dependsonmaterialsandconditions6) Units:Metric/Imperialunit‐selectable.

Fourmeasurementreadingspersecondforsinglepointmeasurement,andtenpersecondforScanMode.

Memoryforupto20files(upto99valuesforeachfile)ofstoredvalues. PowerSource：Two“AA”size,1.5Voltalkalinebatteries.100hourstypicaloperatingtime (backlightoff). Communication：USBviaoutputcable Outlinedimensions：150×74×32mm.

Weight：245g

1.2MainFunctions1) Capableofperformingmeasurementsonawiderangeofmaterial,includingmetals,plastic,ceramics,composites,

glassandotherultrasonicwaveconductivematerials.

2) Optional transducers are available for special applications, including for Rough Surface and High Temperature

applications.

3) Probe‐Zerofunction,Sound‐Velocity‐Calibrationfunction

4) Two‐PointCalibrationfunction.

5) Twoworkmodes:SinglepointmodeandScanmode.

6) Couplingstatusindicatorshowingthecontactstatus.

7) Batteryiconindicatesthecapacityofthebattery.

8) Autopowerofffunctiontoconservebatterylife.

1.3MeasuringPrincipleThedigitalultrasonicthicknessgaugedeterminesthethicknessofapartorstructurebyaccuratelymeasuringthe

timerequired forashortultrasonicpulsegeneratedbya transducerto travel throughthethicknessof thematerial,

reflect from the back or inside surface, and be returned to the transducer. The measured two‐way transit time is

divided by two to account for the down‐and‐back travel path, and thenmultiplied by the velocity of sound in the

material.Theresultisexpressedintheequationshownbelow:

2

tvH

Where：H－Thicknessofthetestpiece.

v－SoundVelocityinthematerial.

t－Themeasuredround‐triptransittime.

1.5OperatingConditionsOperatingTemperature:0°‐140°F(－20～＋60�)

StorageTemperature：22°‐150°F(‐30�～＋70�)

RelativeHumidity≤90％

Thesurroundingenvironmentshouldbevoidofvibration,strongmagneticfield,corrosivemediumandheavydust.

2Structure

1)BaseInstrument 2)Keypad 3)LCDdisplay 4)CalibrationBlock 5)DualSensorProbe

6)DataOutputSoftware 7)USBOutputCable 8)CouplantGel 2.1MainScreen

1,CouplingIndicator:Indicatesthecouplingstatus.Whilethegaugeistakingameasurement,thecouplingindicator

willbedisplayed. If it isnot, thegauge ishavingdifficultyachievingastablemeasurement,and the thicknessvalue

displayedwillmostlikelybeerroneous.

2,MeasuringUnit:Currentunitsystem.MMorINforthicknessvalue.M/SorIN/μSforsoundvelocity.

3,BatteryIcon:Displaystheremainingcapacityofthebattery.

4,InformationDisplay:Displaysthemeasuredthicknessvalueandthesoundvelocity.

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2.2 Keypad Definitions

Turntheinstrumenton/off

Soundvelocitycalibration

Turnon/offthebacklight

Enter

Probe‐Zerooperation

Plus;Turnon/offScan

mode

UnitswitchbetweenInchandMetric

Minus;Turnon/offthebeepmode

DataSaveorDataDelete

3Preparation

3.1TransducerSelectionThegaugeiscapableofperformingmeasurementsonawiderangeofmaterials,fromvariousmetalstoglassand

plastics. Different types of material, however, will require the use of different transducers. Choosing the correct

transducer for a job is critical to being able to easily perform accurate and reliable measurement. The following

paragraphshighlighttheimportantpropertiesoftransducers,whichshouldbeconsideredwhenselectingatransducer

foraspecificjob.

Generallyspeaking,thebesttransducerforajobisonethatsendssufficientultrasonicenergyintothematerial

being measured such that a strong, stable echo is received by the gauge. Several factors affect the strength of

ultrasoundasittravels.Theseareoutlinedbelow:

InitialSignalStrength.Thestrongerasignalistobeginwith,thestrongeritsreturnechowillbe.Initialsignal

strengthislargelyafactorofthesizeoftheultrasoundemitterinthetransducer.Alargeemittingareawillsendmore

energyintothematerialbeingmeasuredthanasmallemittingarea.Thus,aso‐called“1/2inch”transducerwillemita

strongersignalthana“1/4inch”transducer.

Absorptionand Scattering. As ultrasound travels through anymaterial, it is partly absorbed. If thematerial

throughwhich thesound travelshasanygrainstructure, thesoundwaveswillexperiencescattering.Bothof these

effectsreducethestrengthofthewaves,andthus, thegauge’sabilitytodetectthereturningecho.Higherfrequency

ultrasoundisabsorbedandscatteredmorethanultrasoundofalowerfrequency.Whileitmayseemthatusingalower

frequency transducermight be better in every instance, low frequencies are less directional than high frequencies.

Thus,ahigherfrequencytransducerwouldbeabetterchoicefordetectingtheexactlocationofsmallpitsorflawsin

thematerialbeingmeasured.

Geometryof the transducer. The physical constraints of themeasuring environment sometimes determine a

transducer’ssuitabilityforagivenjob.Sometransducersmaysimplybetoolargetobeusedintightlyconfinedareas.

Also, the surfaceareaavailable for contactingwith the transducermaybe limited, requiring theuseofa transducer

with a small wearface. Measuring on a curved surface, such as an engine cylinderwall, may require the use of a

transducerwithamatchingcurvedwearface.

Temperature of thematerial. When it is necessary to measure on surfaces that are exceedingly hot, high

temperaturetransducersmustbeused.Thesetransducersarebuiltusingspecialmaterialsandtechniquesthatallow

them to withstand high temperatures without damage. Additionally, care must be taken when performing a

“Probe‐Zero”or“CalibrationtoKnownThickness”withahightemperaturetransducer.

Selection of the proper transducer is often a matter of tradeoffs between various characteristics. It may be

necessarytoexperimentwithavarietyoftransducersinordertofindonethatworkswellforagivenjob.

Thetransduceristhe“businessend”oftheinstrument.Ittransmitsandreceivesultrasonicsoundwavesthatthe

instrumentusestocalculatethethicknessofthematerialbeingmeasured.Thetransducerconnectstotheinstrument

via the attached cable, and two coaxial connectors. When using transducers, the orientation of the dual coaxial

connectorsisnotcritical:eitherplugmaybefittedtoeithersocketintheinstrument.

Thetransducermustbeusedcorrectly inorderforthe instrumenttoproduceaccurate,reliablemeasurements.

Belowisashortdescriptionofthetransducer,followedbyinstructionsforitsuse.

AboveLeftfigureisabottomviewofatypicaltransducer.Thetwosemicirclesofthewearfacearevisible,asisthe

barrierseparatingthem.Oneofthesemicirclesisresponsibleforconductingultrasonicsoundintothematerialbeing

measured,andtheothersemicircleisresponsibleforconductingtheechoedsoundbackintothetransducer.Whenthe

transducer isplacedagainst thematerialbeingmeasured, it is theareadirectlybeneath thecenterof thewearface

thatisbeingmeasured.

Rightfigureisatopviewofatypicaltransducer.Pressagainstthetopwiththethumborindexfingertoholdthe

transducerinplace.Moderatepressureissufficient,asitisonlynecessarytokeepthetransducerstationary,andthe

wearfaceseatedflatagainstthesurfaceofthematerialbeingmeasured.

Table3‐1TransducerSelectionModel Freq

MHZDiammm

MeasuringRange Lowerlimit Description

UTG2000‐440 2 22 3.0mm‐300.0mm（InSteel）40mm(inGrayCastIron)

20 RoughSurface

Alsoforthick,highlyattenuating,orhighlyscatteringmaterials

StandardProbe 5 10 1.2mm‐230.0mm（InSteel） Φ20mm×3.0mm NormalMeasurementUTG2000‐420 5 10 1.2mm‐230.0mm（InSteel） Φ20mm×3.0mm NormalMeasurement

UTG2800‐750 7 6 0.75mm‐80.0mm（InSteel）

Φ15mm×2.0mm Forthinpipewallorsmallcurvaturepipewallmeasurement

UTG2000‐450 5 14 3‐200mm（InSteel） 30 Forhightemperatureupto570°FUTG2600‐400 5 4 30 Thinwalledorsmallparts

3.2ConditionandPreparationofSurfacesInanyultrasonicmeasurement scenario, the shapeandroughnessof the test surfaceareofparamount importance.

Rough,unevensurfacesmaylimitthepenetrationofultrasoundthroughthematerial,andresultinunstable,andtherefore

unreliable,measurements.The surfacebeingmeasured shouldbe clean, and freeof any small particulatematter, rust, or

scale.Thepresenceofsuchobstructionswillpreventthetransducerfromseatingproperlyagainstthesurface.Often,awire

brushorscraperwillbehelpfulincleaningsurfaces.Inmoreextremecases,rotarysandersorgrindingwheelsmaybeused,

thoughcaremustbetakentopreventsurfacegouging,whichwillinhibitpropertransducercoupling.

Extremelyroughsurfaces,suchasthepebble‐likefinishofsomecastiron,willprovemostdifficulttomeasure.These

kinds of surfaces act on the sound beam like frosted glass on light, the beam becomes diffused and scattered in all

directions.

In addition to posing obstacles to measurement, rough surfaces contribute to excessive wear of the transducer,

particularlyinsituationswherethetransduceris“scrubbed”alongthesurface.Transducersshouldbeinspectedonaregular

basis, forsignsofunevenwearof thewearface. If thewearface iswornononesidemorethananother, thesoundbeam

penetrating the testmaterialmay no longer be perpendicular to thematerial surface. In this case, it will be difficult to

exactly locate tiny irregularities in thematerial beingmeasured, as the focus of the sound beam no longer lies directly

beneaththetransducer.

4 Operation

4.1 Power On/Off

The instrument is turned on by pressing the key.

Thegaugecanbeturnedoffbypressingthe keywhileitison.TheUTG‐2800hasmemorythatretainsallof

itssettingsevenwhenthepowerisoff.

4.2ProbeZero

The keyisusedto“zero”theinstrumentinmuchthesamewaythatamechanicalmicrometeriszeroed.If

thegauge isnotzeroedcorrectly,all themeasurements that thegaugemakesmaybe inerrorbysome fixedvalue.

Whenthe instrument is “zeroed”, this fixederrorvalue ismeasuredandautomaticallycorrected forall subsequent

measurements.Theinstrumentmaybe“zeroed”byperformingthefollowingprocedure.:

1) Plugthetransducerintotheinstrument.Makesurethattheconnectorsarefullyengaged.Checkthatthewearface

ofthetransduceriscleanandfreeofanydebris.

2) Pressthe keytoactivatetheprobezeromode.

3) Usethe keyandthe keytoscrolltotheprobemodelcurrentlybeingused.Besuretosettherightprobemodel

totheinstrument.Otherwise,therewillbeerroneousreadings.

4) Applyasingledropletofultrasoniccouplanttothefaceofthemetalprobe‐disconthefrontfaceofthegauge.

5) Pressthetransduceragainsttheprobedisc,makingsurethatthetransducersitsflatagainstthesurface.

6) Removethetransducerfromtheprobedisc.

At this point, the instrument has successfully calculated its internal error factor, andwill compensate for this

value inanysubsequentmeasurements.Whenperforminga“probezero”, the instrumentwillalwaysusethesound

velocity value of the built‐in probe‐disc, even if some other velocity value has been entered for making actual

measurements.Thoughtheinstrumentwillrememberthelast“probezero”performed,it isgenerallyagoodideato

performa“probezero”wheneverthegaugeisturnedon,aswellasanytimeadifferenttransducerisused.Thiswill

ensurethattheinstrumentisalwayscorrectlyzeroed.

Press while in probe zero mode will stop current probe zero operation and return to the measurement

mode.4.3SoundVelocityCalibration

In order for the gauge to make accurate measurements, it must be set to the correct sound velocity for the

materialbeingmeasured.Differenttypesofmaterialhavedifferentinherentsoundvelocities.Ifthegaugeisnotsetto

thecorrectsoundvelocity,allofthemeasurementsthegaugemakeswillbeerroneousbysomefixedpercentage.The

One‐Pointcalibrationisthesimplestandmostcommonlyusedcalibrationprocedureoptimizinglinearityoverlarge

ranges.TheTwo‐pointcalibrationallows for greater accuracyover small rangesby calculating theprobe zeroand

velocity.

Note:OneandTwopointcalibrationsmustbeperformedonmaterialwiththepaintorcoatingremoved.Failureto

removethepaintorcoatingpriortocalibrationwillresultinamultimaterialvelocitycalculationthatmaybedifferent

fromtheactualmaterialvelocityintendedtobemeasured.

4.3.1Calibrationtoaknownthickness

Note:Thisprocedurerequiresasamplepieceofthespecificmaterialtobemeasured,theexactthicknessofwhichis

known,e.g.fromhavingbeenmeasuredbysomeothermeans.

1) PerformaProbe‐Zero.

2) Applycouplanttothesamplepiece.

3) Pressthetransduceragainstthesamplepiece,makingsurethatthetransducersitsflatagainstthesurfaceofthe

sample.Thedisplayshouldshowsomethicknessvalue,andthecouplingstatusindicatorshouldappearsteadily.

4) Havingachievedastablereading,removethetransducer.Ifthedisplayedthicknesschangesfromthevalueshown

whilethetransducerwascoupled,repeatstep3.

5) Pressthe keytoactivatethecalibrationmode.TheMM(orIN)symbolshouldbeginflashing.

6) Usethe keyandthe keytoadjustthedisplayedthicknessupordown,untilitmatchesthethicknessof

thesamplepiece.

7) Press the key again. TheM/S (or IN/μS) symbols should begin flashing. The gauge is nowdisplaying the

soundvelocityvalueithascalculatedbasedonthethicknessvaluethatwasentered.

8) Press the keyonceagain toexit thecalibrationmodeandreturn to themeasurementmode.Thegauge is

nowreadytoperformmeasurements.

4.3.2Calibrationtoaknownvelocity

Note:Thisprocedurerequiresthattheoperatorknowsthesoundvelocityofthematerialtobemeasured.Atableof

commonmaterialsandtheirsoundvelocitiescanbefoundinAppendixAofthismanual.

1) Pressthe keytoactivatethecalibrationmode.TheMM(orIN)symbolshouldbeginflashing.

2) Pressthe keyagain,sothatTheM/S(orIN/μS)symbolsareflashing.

3) Use the key and the key to adjust the sound velocity valueup or down,until itmatches the sound

velocity of thematerial to bemeasured. You can also press the key to switch among the preset commonlyusingvelocities.

4) Pressthe keytoexitfromthecalibrationmode.Thegaugeisnowreadytoperformmeasurements.

Toachievethemostaccuratemeasurementspossible,itisgenerallyadvisabletoalwayscalibratethegaugetoa

samplepieceofknownthickness.Materialcomposition(andthus,itssoundvelocity)sometimesvariesfromlottolot

andfrommanufacturertomanufacturer.Calibrationtoasampleofknownthicknesswillensurethatthegaugeisset

ascloselyaspossibletothesoundvelocityofthematerialtobemeasured.

4.3.3TwoPointCalibration

Note: This procedure requires that the operator has two known thickness points on the test piece that are

representativeoftherangetobemeasured.

1) PerformaProbe‐Zero.

2) Applycouplanttothesamplepiece.

3) Press the transducer against the sample piece, at the first/second calibration point, making sure that the

transducersitsflatagainstthesurfaceofthesample.Thedisplayshouldshowsome(probablyincorrect)thickness

value,andthecouplingstatusindicatorshouldappearsteadily.

4) Havingachievedastablereading,removethetransducer.Ifthedisplayedthicknesschangesfromthevalueshown

whilethetransducerwascoupled,repeatstep3.

5) Pressthe key.TheMM(orIN)symbolshouldbeginflashing.

6) Usethe keyandthe keytoadjustthedisplayedthicknessupordown,untilitmatchesthethicknessof

thesamplepiece.

7) Pressthe key.Thedisplaywillflash1OF2.Repeatsteps3and4onthesecondcalibrationpoint.

8) Usethe keyandthe keytoadjustthedisplayedthicknessupordown,untilitmatchesthethicknessof

thesamplepiece.*youwillnotsee2OF2ondisplay.

9) Pressthe key,sothatTheM/S(orIN/μS)symbolsareflashing.Thegaugewillnowdisplaythesoundvelocity

valueithascalculatedbasedonthethicknessvaluesthatwereenteredinstep6.

10) Press the key oncemore to exit the calibrationmode. The gauge is now ready to performmeasurements

withinthisrange.

4.3.4 StoringSoundVelocitiesinMemoryThe UTG‐2800 is capable of storing multiple sound velocities to enable the user to quickly checkdifferentknownmaterials. Example: If you are testing steel at .233 in/us, you can quickly change to one of your stored soundvelocitieswhenyouneedtotestyouraluminum,brass,plastic,etc.part.

Powerunit on. Press theVELbuttonuntil you see in/us flashing.Nowpress the button toscroll

through the set sound velocities. Find a velocity closest to yourmaterial and adjust it tomatch yourmaterial by

pressingtheUPorDOWNarrowbuttons.Placeprobeonyourpartandthegaugewillautomaticallystorethisvelocity

forfutureuse.

4.4MakingMeasurements

When the tool isdisplaying thicknessmeasurements, thedisplaywillhold the lastvaluemeasured,until anew

measurementismade.

Inorderforthetransducertodoitsjob,theremustbenoairgapsbetweenthewear‐faceandthesurfaceofthe

material beingmeasured.This is accomplishedwith theuseof a “coupling” fluid, commonly called “couplant”.This

fluidservesto“couple”,ortransfer,theultrasonicsoundwavesfromthetransducer,intothematerial,andbackagain.

Before attempting to make a measurement, a small amount of couplant should be applied to the surface of the

materialbeingmeasured.Typically,asingledropletofcouplantissufficient.

After applying couplant, press the transducer (wearface down) firmly against the area to be measured. The

couplingstatusindicatorshouldappear,andadigitnumbershouldappearinthedisplay.Iftheinstrumenthasbeen

properly“zeroed”andsettothecorrectsoundvelocity,thenumberinthedisplaywillindicatetheactualthicknessof

thematerialdirectlybeneaththetransducer.

Ifthecouplingstatusindicatordoesnotappearnotstable,orthenumbersonthedisplayseemerratic,checkto

make sure that there is an adequate filmof couplant beneath the transducer, and that the transducer is seated flat

againstthematerial.Iftheconditionpersists,itmaybenecessarytoselectadifferenttransducer(sizeorfrequency)

forthematerialbeingmeasured.

While the transducer is in contactwith thematerial that is beingmeasured, the instrumentwill perform four

measurementseverysecond,updatingitsdisplayasitdoesso.Whenthetransducerisremovedfromthesurface,the

displaywillholdthelastmeasurementmade.

Note：Occasionally, a small film of couplant will be drawn out between the transducer and the surface as the

transducer is removed. When this happens, the gauge may perform a measurement through this couplant film,

resulting in a measurement that is larger or smaller than it should be. This phenomenon is obvious when one

thickness value is observedwhile the transducer is in place, and another value is observed after the transducer is

removed. In addition,measurements through very thick paint or coatingsmay result in the paint or coating being

measured rather than the actual material intended. The responsibility for proper use of the instrument, and

recognitionofthesetypesofphenomenon,restssolelywiththeuseroftheinstrument.

4.5Scanmode

Whilethegaugeexcelsatmakingsinglepointmeasurements,itissometimesdesirabletoexaminealargerregion,

searchingforthethinnestpoint.Thegaugeincludesafeature,calledScanMode,whichallowsittodojustthat.

Innormaloperation,thegaugeperformsanddisplaysfourmeasurementseverysecond,whichisquiteadequate

forsinglemeasurements.InScanMode,however,thegaugeperformstenmeasurementseverysecond,anddisplaysthe

readingswhilescanning.While the transducer is incontactwith thematerialbeingmeasured, thegauge iskeeping

track of the lowest measurement it finds. The transducer may be “scrubbed” across a surface, and any brief

interruptions in the signalwill be ignored.When the transducer loses contactwith the surface formore than two

seconds,thegaugewilldisplaythesmallestmeasurementitfound.Whenthetransducerisremovedfromthematerial

beingscanned,thegaugewilldisplaythesmallestmeasurementitfound.

Whenthescanmode is turnedoff, thesinglepointmodewillbeautomatically turnedon.Turnon/off thescan

modebythefollowingsteps:

Pressthe keytoswitchthescanmeasurementmodeonandoff.Itwilldisplaythecurrentconditionofthe

scanmodeonthemainscreen.

4.6ChangingResolutionUTG‐2800hasselectabledisplayresolution,whichis0.01”/0.001”(0.1mmand0.01mm).

Pressdownthe keywhileturningonthegaugewillswitchtheresolutionbetween“High”and“Low”.

4.7ChangingMeasuringUnits

Onthemeasurementmode,pressthe keytoswitchbackandforthbetweenimperialandmetricunits.

4.8MemoryManagement4.8.1Storingareading

Therearetwentyfiles(F00‐F19)thatcanbeusedtostorethemeasurementvaluesinsidethegauge.Atmost100

records(thicknessvalues)canbestoredtoeachfile.Bysimplypressingthe keyafteranewmeasurementreadingappears,themeasuredthicknessvaluewillbesavedtocurrentfile.Itisaddedasthelastrecordofthefile.Tochange

thedestinationfiletostorethemeasuredvalues,followthesteps:

1) Pressthe keytoactivatethedata loggingfunctions. Itwilldisplaythecurrent filenameandthetotalrecordcountofthefile.

2) Usethe keyandthe keytoselectthedesiredfiletosetascurrentfile.

3) Pressthe keytoexitthedataloggingfunctionsatanytime.

4.8.2Clearingselectedfile

Theusermayrequirethecontentsofanentirefilebecompletelyclearedofallmeasurements.Thiswouldallow

theusertostartanewlistofmeasurementsstartingatstoragelocationL00.Theprocedureisoutlinedinthefollowing

steps.

1. Pressthe keytoactivatethedataloggingfunctions.Itwilldisplaythecurrentfilenameandthetotalrecordcountofthefile.

2. Usethe keyandthe keytoscrolltothefilethatwillbeclearedofallmeasurements.

3. Pressthe keyonthedesiredfile.Itwillautomaticallyclearthefile,anddisplay“‐DEL”.

4. Pressthe key,atanytime,toexitthedataloggingfunctionsandreturntomeasurementmode.

4.8.3Viewing/deletingstoredrecord

This function provides the user with the ability to view/delete a record in a desired file previously saved in

memory.Followingisthesteps:

1. Pressthe keytoactivatethedataloggingfunctions.Itwilldisplaythecurrentfilenameandthetotalrecordcountofthefile.

2. Usethe keyandthe keytoselectthedesiredfile.

3. Pressthe keytoentertheselectedfile.Itwilldisplaythecurrentrecordnumber(forexample,L012)andtherecordcontent.

4. Usethe keyandthe keytoselectthedesiredrecord.

5. Pressthe keyonthedesiredrecord.Itwillautomaticallydeletethisrecord,anddisplay“‐DEL”.

6. Pressthe keytoexitthedataloggingfunctionsandreturntomeasurementmode.

4.9DataPrintingAt the endof the inspectionprocess, or endof theday, theusermay require the readingsbe transferred to a

computer.Thefollowingstepsoutlinethisprocedure.

Before printing, please insert one connection plug of the print cable (Optional parts) into the socket on the

upper‐leftofthemainbody,andinserttheotherplugintothecommunicationsocketofthemini‐printer.

1. Pressthe keytoactivatethedataloggingfunctions.

2. Usethe keyandthe keytoselectthedesiredfile.

3. Pressthe keytoprinttheselectedfile.Thisoperationwillsendallthedataincurrentfiletotheminiprinter

viaRS232portandprintthemout.

4. Pressthe keytoexitthedataloggingfunctionsandreturntomeasurementmode.

4.10SoundModeWhenthesoundissetto【On】，itwouldmakeashortbeepanytimeyoupressakey,takeameasurement,orthe

measuredvalueexceedsthetolerancelimit.

Press the key to switch the beepmode on and off. It will display the current soundmode on themain

screen.

4.11Backlight Thebackground lightmakes it easy to use in darker conditions indoors or out. Press key to switch on orswitchoff thebackground light at anymomentasyouneedafterpoweron. Since theEL lightwill consumemore

power,turnonitonlywhennecessary.

4.12BatteryIconTwoAAsizealkalinebatteriesareusedas thepowersource.Asthebatterybeginstodrainthedisplaywillbe

shownas .Whenthebatterycapacityrunsout,thebatterysymbolwillbeshownas andwillbegintoflash.Whenthisoccurs,thebatteriesshouldbereplaced.Paycloseattentiontopolarity.

PleaseremovebatteriesiftheUTG‐2800willnotbeusedforanextendedperiodoftime.

4.13AutoPowerOffThe instrument features an auto power off function designed to conserve battery life. If the tool is idle for 5

minutes,itwillturnitselfoff.

4.14SystemReset

Pressdownthe keywhilepoweringontheinstrumentwillrestorefactorydefaults.Allthememorydatawill

be cleared during system reset. The only time this might possibly helpful is if the parameter in the gauge was

somehowcorrupted.

4.15ConnectingtoaComputerTheUTG‐2800isequippedwithaUSBport.Usingtheaccessorycable,thegaugehastheabilitytoconnecttoa

computer,orexternalstoragedevice.Measurementdatastoredinthememoryofthegaugecanbetransferredtothe

computerthroughtheUSBport.

5Service

ALLSERVICEAND/ORREPAIRSMUSTBEDONETHROUGHTHEPHASEIISERVICEDEPARTMENT.

Areturnauthorizationnumberismandatoryinorderforadefectivetestertobeacceptedforrepairand/orreplacement.All

testersmustbeaccompaniedbyyourwarrantycardorserialnumber.Completedescriptionofproblemandacontactperson

forauthorizationofrepairsmustbesuppliedaswell.

ANYATTEMPTATHOMEREPAIRWILLAUTOMATICALLYVOIDTHESTATEDWARRANTY! NOEXCEPTIONS!

6TransportandStorage

Besuretocleantheprobeandcableaftereachuse.Grease,oilanddustwillcausethecableoftheprobetoageandcrack.

If theunit isnot tobeused fora longperiodof time, removethebatteries toavoidbattery leakageandcorrosionof the

batterycontacts.

Avoidstoringtheunitinadamporextremelyhotenvironment.

AppendixBApplicationsNotesMeasuringpipeandtubing.

Whenmeasuring a piece of pipe to determine the thickness of the pipewall, orientation of the transducers is

important.Ifthediameterofthepipeislargerthanapproximately4inches,measurementsshouldbemadewiththe

transducerorientedsothatthegapinthewearfaceisperpendicular(atrightangle)tothelongaxisofthepipe.For

smallerpipediameters, twomeasurementsshouldbeperformed,onewith thewearfacegapperpendicular,another

withthegapparalleltothelongaxisofthepipe.Thesmallerofthetwodisplayedvaluesshouldthenbetakenasthe

thicknessatthatpoint.

Measuringhotsurfaces

Thevelocityofsoundthroughasubstanceisdependantuponitstemperature.Asmaterialsheatup,thevelocityof

sound through them decreases. In most applications with surface temperatures less than about 100�, no special

proceduresmustbeobserved.At temperaturesabove thispoint, thechange insoundvelocityof thematerialbeing

measured starts to have a noticeable effect upon ultrasonic measurement. At such elevated temperatures, it is

recommendedthattheuserperformacalibrationprocedureonasamplepieceofknownthickness,whichisatornear

thetemperatureofthematerialtobemeasured.Thiswillallowthegaugetocorrectlycalculatethevelocityofsound

throughthehotmaterial.

When performing measurements on hot surfaces, it may also be necessary to use a specially constructed

high‐temperature transducer. These transducers are built usingmaterials which can withstand high temperatures.

Evenso,itisrecommendedthattheprobebeleftincontactwiththesurfaceforasshortatimeasneededtoacquirea

stablemeasurement.Whilethetransducerisincontactwithahotsurface,itwillbegintoheatup,andthroughthermal

expansionandothereffects,maybegintoadverselyaffecttheaccuracyofmeasurements.

Measuringlaminatedmaterials.

Laminatedmaterialsareunique in that theirdensity (and thereforesound‐velocity)mayvaryconsiderably from

onepiecetoanother.Somelaminatedmaterialsmayevenexhibitnoticeablechangesinsound‐velocityacrossasingle

surface.Theonlywaytoreliablymeasuresuchmaterialsisbyperformingacalibrationprocedureonasamplepieceof

knownthickness.Ideally,thissamplematerialshouldbeapartofthesamepiecebeingmeasured,oratleastfromthe

samelaminationbatch.Bycalibratingtoeachtestpieceindividually,theeffectsofvariationofsound‐velocitywillbe

minimized.

An additional important considerationwhenmeasuring laminates, is that any includedair gapsorpocketswill

causeanearlyreflectionof theultrasoundbeam.Thiseffectwillbenoticedasasuddendecrease in thickness inan

otherwiseregularsurface.While thismay impedeaccuratemeasurementof totalmaterial thickness, itdoesprovide

theuserwithpositiveindicationofairgapsinthelaminate.

Suitabilityofmaterials

Ultrasonic thickness measurements rely on passing a sound wave through the material being measured. Not all

materialsaregoodattransmittingsound.Ultrasonicthicknessmeasurementispracticalinawidevarietyofmaterials

includingmetals,plastics,andglass.Materialsthataredifficultincludesomecastmaterials,concrete,wood,fiberglass,

andsomerubber.

CouplantsAll ultrasonic applications require some medium to couple the sound from the transducer to the test piece.

Typicallyahighviscosityliquidisusedasthemedium.Thesoundusedinultrasonicthicknessmeasurementdoesnot

travelthroughairefficiently.

A wide variety of couplant materials may be used in ultrasonic gauging. Propylene glycol is suitable for most

applications.Indifficultapplicationswheremaximumtransferofsoundenergyisrequired,glycerinisrecommended.

However,onsomemetalsglycerincanpromotecorrosionbymeansofwaterabsorptionandthusmaybeundesirable.

Othersuitablecouplants formeasurementsatnormaltemperaturesmayincludewater,variousoilsandgreases,

gels, and silicone fluids.Measurementsat elevated temperatureswill require specially formulatedhigh temperature

couplants.

Inherent inultrasonic thicknessmeasurement is thepossibility that the instrumentwilluse thesecondrather

thanthefirstechofromthebacksurfaceofthematerialbeingmeasuredwhileinstandardpulse‐echomode.Thismay

resultinathicknessreadingthatisTWICEwhatitshouldbe.TheResponsibilityforproperuseoftheinstrumentand

recognitionofthesetypesofphenomenonrestssolelywiththeuseroftheinstrument.

All velocities are approximations: SOUND VELOCITY MEASUREMENT CHART

Material SoundVelocity Inch/µS Meter/sec

Acrylic(Perspex) 0.1070 2730 Aluminum 0.2490 6320 Beryllium 0.5080 12900 Brass 0.1740 4430 Composite,graphite/epoxy 0.1200 3070 Copper 0.1830 4660 Diamond 0.7090 18000 Fiberglass 0.1080 2740 Glycerin 0.0760 1920 Inconel® 0.2290 5820 Iron,Cast(soft) 0.1380 3500 Iron,Cast(hard) 0.2200 5600 Ironoxide(magnetite) 0.2320 5890 Lead 0.0850 2160 Lucite® 0.1060 2680 Molybdenum 0.2460 6250 Motoroil 0.0690 1740 Nickel,pure 0.2220 5630 Polyamide 0.0870 2200 Nylon 0.1020 2600 Polyethylene,highdensity(HDPE) 0.0970 2460 Polyethylene, lowdensity(LDPE) 0.0820 2080

Polystyrene 0.0920 2340 Polyvinylchloride,(PVC) 0.0940 2395 Rubber,polybutadiene 0.0630 1610 Silicon 0.3790 9620 Silicone 0.0580 1485 Steel,1020 0.2320 5890 Steel,4340 0.2300 5850 Steel,302austeniticstainless 0.2260 5740 Tin 0.1310 3320 Titanium 0.2400 6100 Tungsten 0.2040 5180 Water(20°C) 0.0580 1480 Zinc 0.1640 4170 Zirconium 0.1830 4650Material V(in./µsec) V(m/sec) Acrylic(Perspex) 0.1070 2730 Aluminum 0.2490 6320 Beryllium 0.5080 12900

UltrasonicAccessoriesUltrasonicThicknessGaugeProbeSelection:

StockNo. Description Compatibility Comments

UTG2000‐020 2”InsideDiameter Probe5Mhz‐12mmdia. 90ºangle

AllPhaseIIThicknessGauges Fortestinginsidecylindersw/2”diameter

UTG2000‐030 3”InsideDiameter Probe5Mhz‐12mmdia. 90ºangle

AllPhaseIIThicknessGauges Fortestinginsidecylindersw/3”diameter

UTG2000‐400* 12mmø ‐ 90ºangle – 5Mhz AllPhaseIIThicknessGauges GeneralPurpose

UTG2000‐420 6mmø ‐ 90ºangle – 5Mhz AllPhaseIIThicknessGauges Fortestingsmallareas

UTG2000‐440 14mmø ‐ 90ºangle – 2.0Mhz AllPhaseIIThicknessGauges exceptUTG1500

FortestingRoughSurfaces(minthicknessof.07”)

UTG2000‐450 12mmø ‐ Straight – 5Mhz AllPhaseIIThicknessGauges

FortestingHiTemperature (upto930º)

UTG2000‐475 6mmø ‐ 90ºangle – 7.5MhzRigidextendedprobe

AllPhaseIIThicknessGauges ExceptUTG‐1500&2000

Fortestingindeepinsidebores

UTG2600‐400 4mmø ‐ 90ºangle ‐ 10Mhz

AllPhaseIIThicknessGauges ExceptUTG‐1500&2000

Fortestingextremelysmallareas

UTG2600‐410* 8mmø ‐ 90ºangle ‐ 5Mhz AllPhaseIIThicknessGauges

GeneralPurpose

UTG2600‐420 12mmø ‐ 90ºangle – 2.25Mhz AllPhaseIIThicknessGauges ExceptUTG‐1500

Fortestingporousmaterials/roughsurface

UTG2800‐400* 10mmø ‐ Straight ‐ 5Mhz AllPhaseIIThicknessGauges

GeneralPurpose

UTG2800‐420 14mmø ‐ 90ºangle – 2.50Mhz AllPhaseIIThicknessGauges ExceptUTG‐1500

Fortestingporousmaterials/roughsurface

UTG2800‐750 6mmø ‐ 90ºangle – 7.5Mhz AllPhaseIIThicknessGauges ExceptUTG‐1500&2000

Fortestingporousmaterials&Plastics

*=Comesstandardwithunit

Hi‐Temperature RoughSurface/PorousMaterials ExtremeSmallSurface InternalPorts

UltrasonicCouplantGelFeatures:

Waterbasedandwatersoluble

Slowdryingwithgoodtransducerlubrication

Extendedambienttemperaturerange

Stablecouplantthatholdsonaverticalandoverheadsurfacesandfillsdepressionsinroughsurfaces

MSDS/SDSavailablebyrequest

Availablein8ozBottleor5‐LiterContainer

PartNo.UTG1000‐800 8ozBottlePartNo.UTG1000‐850 5Liter

5‐StepCalibrationBlock ModelNo.UTG‐05001018Steel .100”thru.500”

MainHeadquarters:U.S.A

PhaseIIMachine&Tool,Inc.

21IndustrialAveUpperSaddleRiver,NJ.07458 USATel:(201)962‐7373Fax:(201)962‐8353GeneralE‐Mail:info@phase2plus.com

BEIJING,CHINA

PhaseIIMeasuringInstruments(Beijing)Ltd.

Room301,Bldg2 QingYuanXiLi,HaidianDistrict,Beijing100192,ChinaTel:+86‐10‐59792409Fax:+86‐10‐59814851GeneralE‐mail:info@phase2china.com.cn

MEXICO

PhaseIIdeMexico

CalleANo.4PromerPisoCol.SanMarcosAzcapotzalcoC.P02020MexicoTel:011‐525‐5538‐39771Fax:sameGeneralE‐mail:phase2mexico@hotmail.com

VENEZUELA

PhaseIIHerramientasUniversalesEDCM.CA.

Av.FranciscoLazoMartiCCPlazaSantaMonicaPBLocalSantaMonica,Caracas1040VenezuelaTel:212‐690‐28‐21 Fax:212‐693‐29‐16 E‐mail:edcphm@movistar.net