Extech Instruments RPM40 User manual

USERGUIDE
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COMBINATIONPHOTO/CONTACTTACHOMETER
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ModelRPM40
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RPM40-en-GB_V1.2 10/14
2
Introduction
ThankyouforselectingtheExtechCombinationPhoto/ContactTachometer,ModelRPM40.This
combinationtachometerisapatenteddesignprovidingcontactandnon‐contactRPM
measurements.Inaddition,linearsurfacespeedscanbemeasuredinft/minorm/min.This
device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.
Features
Compactpockettachometer
Combinationphotoandcontacttachometer
LaserpointerforPhotoTachometertargeting
Non‐contactPhotoTachometerdetectstargettoadistanceof1.5m(4.9ft.)
Widemeasuringrange0.5to19,999RPM(Contact)and99,999RPM(Photo)
0.1%basicaccuracy
Memory/Recallofhighest,lowest,andlastreadings
Durable,light‐weightABSplastichousing
Safety
1. Useextremecautionwhenthelaserbeamison
2. Donotpointthebeamtowardanyone'seye
3. Becarefulnottoletthebeamstriketheeyefromareflectivesurface
4. Donotusethelasernearexplosivegasesorinotherpotentiallyexplosiveareas
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RPM40-en-GB_V1.2 10/14
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MeterDescription
1. RPMAdapter(Contact)
2. SurfaceSpeedWheel
3. LCDDisplay
4. PhotoDetectSensor
5. Laserpointer(red)
6. MonitorIndicator
7. MeasureButton
8. FunctionButton
9. MemoryButton
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Thebatterycompartmentislocatedonbackofmeter.
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BatteryReplacement
Thelowbatteryindicatorappearswhenthebatteriesneedtobereplaced.Toreplacethe
batteries:
1. OpentherearbatterycompartmentbyremovingthetwoPhillipsheadscrewsthatsecureit
2. Replacethefour1.5VAAbatteriesobservingcorrectpolarity
3. Replacethebatterycoverbeforeattemptingtousethemeter
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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.
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RPM40-en-GB_V1.2 10/14
4
Operation
Selectingafunction
PressandholdtheMEASUREbutton(7)and,whileholdingMEASURE,useshortpressesofthe
FUNCTIONbutton(8)tostepthroughthemodes.Theavailablemodesare:ContactRPM
measurement,Surfacespeed(m/min),Surfacespeed(ft/min),Surfacespeed(in/min),and
PhotoRPMmeasurement(laserpointerwillswitchONinthismode).
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Note:Whenafunctionisselecteditbecomesthedefaultmodeofoperation(evenaftertheunit
ispoweredoff)untilanotherfunctionisselected.
PhotoRPMMeasurement
1. SelectPhotoRPMmeasurementmodeasinstructedintheprevioussection.
2. Applyanappropriatelysizedsquarepieceofreflectivetapetothesurfaceoftheobject
undertest.
3. PressandholdtheMEASUREbuttonandalignthelaserpointerwiththereflectivetape.
Measurementdistanceshouldbelimitedtoadistancerangeof2to60”(5to150cm).
4. VerifythattheMonitorIndicator(6)appearsontheLCDwhenthereflectivetapepasses
throughthebeam.
5. ReleasetheMeasurebuttonwhentheRPMreadingstabilizesontheLCD.
6. Iftherpmisunder50,applyadditionalsquaresofreflectivetape.Dividethereadingshown
onthedisplaybythenumberofpiecesofreflectivetapesquarestocalculatetheactualrpm.
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NOTE:Brightambientlightmayinterferewiththereflectedlight.Shadingthetargetarea
maybenecessaryinsomecases.
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CAUTION:Rotatingobjectscanbedangerous.Useextremecare.
Photo Tachometer
Rotating object
Reflective tape
Light source
and reflection
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RPM40-en-GB_V1.2 10/14
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ContactRPMMeasurement
1. Installarotatingattachment(coneorfunnel)tothemeter
2. SelectContactRPMmeasurementmodeasdescribedinthe‘Selectingafunction’section.
3. PressandholdtheMEASUREbuttonwhilesimultaneouslyplacingtheRPMadapter(1)
againstthecenteroftherotatingaxistobemeasured.
4. ReleasetheMEASUREbuttonwhenthereadingstabilizes(approximately2seconds).
ReversibleLCDDisplay
TheLCDdisplayindicatesPhotoTachometermeasurementsinonedirectionandContact
measurementsintheoppositedirection.Thispermitstheusertoeasilyreadthemeasurement
digitsinbothmeasurementmodes.
SurfaceSpeedMeasurement
1. SelecttheSurfaceSpeed(m/min,ft/min,orin/min)modeasdescribedaboveinthe
‘Selectingafunction’section.
2. AttachtheSurfaceSpeedwheel(2)tothemeter.
3. PresstheMEASUREbuttonandplacethesurfacespeedwheelagainsttheobjectundertest.
4. ReleasetheMEASUREbuttonwhenthereadingstabilizes(approximately2seconds).
MemoryRecall
Theminimum(dn),maximum(UP),andlast(LA)readingvaluesarestoredinmemoryaftereach
measurement(aftertheMEASUREbuttonisreleased).Toviewthesevalues:
1. PressandholdtheMEMORYbutton(9),thedisplaywilltogglebetweenthestoredreading
anditsidentificationlabel(dnforlowestreading),UPforhighestreading,orLAforlast
reading).
2. ReleasetheMEMORYbuttonandthenpressandholditagaintoviewthenextstored
reading.
3. ReleasetheMEMORYbuttonandthenpressandholditagaintoviewthenextstored
reading.
4. Repeatthesestepsasdesired.
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RPM40-en-GB_V1.2 10/14
6
Specifications
Measurement&RangePhotoTachometer:5to99,999RPM
ContactTachometer:0.5to19,999RPM
SurfaceSpeed:
m/min.–0.05to1,999.9m/min.
ft/min.–0.2to6,560ft/min.
in/min.–2.0to78,740in/min.
ResolutionRPM 0.1RPM(<1000RPM)
1RPM(≥1000RPM)
m/min 0.01m/min(<100m/min)
0.1m/min(≥100m/min.)
ft/min.0.1ft/min.(<1000ft/min.)
1ft/min(≥1000ft/min.).
in/min.0.1in/min.(<1000in/min.).
1in/min.(≥1000in/min.).
DisplayLCD,size:32mmx28mm(1.26x1.10”)
Large5digitreversibledisplaywithunitofmeasureand
alertindicators
Accuracy±(0.1%ofreading+1digit)
SamplingratePhotomode:1second(>60RPM)
Contactmode:1second(>6RPM)
PhotoTachometerdetectingdistanceTypically50to150cm(2to60”)
TimebasecircuitQuartzcrystal
LaserlightsourceLessthan1mW;Class2laserdiode;645nm
OperatingTemperature0to50°C(32to122°F)
OperatingHumidityLessthan80%R.H.
MemoryStores/Recallshighest,lowest,andlastvalues
Battery4x1.5VAAAbatteries
PowerConsumptionPhototachometer:Approximately20mADC
Contacttachometer:Approximately9.5mADC
Dimensions165x50x33mm(6.5x2.0x1.3”)
Weight182g(0.4lbs.)Batteryweightincluded
AccessoriesincludedBatteries,Reflectivetape60cm(24”),Surfacespeed/rpm
rotatingattachments(cone&funnel)
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Copyright©2014FLIRSystems,Inc.
Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform
www.extech.com
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