Extech Instruments 461895 User manual

User's Guide
COMBINATION CONTACT/PHOTO TACHOMETER
Model 461895

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Introduction
Congratulations on your purchase of the Extech Combination Contact/Photo
Tachometer, Model 461895. The 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. Careful use of this device will provide years of reliable
operation.

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Specifications
General Specifications
Circuit Custom one-chip LSI microprocessor circuit
Time base Quartz crystal
Display 5 digit LCD display
Measurements Photo Tachometer - 5 to 99,999 rpm
Contact Tachometer - 0.5 to 19,999 rpm
Surface Speed - 0.2 to 6,560 ft/min
Surface Speed - 0.05 to 1999.9 m/min
Memory Saves LAST, MAX, and MIN readings
Sampling Time Photo Tachometer - 1 sec. (over 60 rpm)
Contact Tachometer - 1 sec. (over 6 rpm)
Detecting Distance -
Photo Tachometer
2 to 6” (50 to 150 mm) depending on ambient light
Operating Temperature 32 °F to 122 °F (0 °C to 50 °C)
Power Supply Four 1.5 V AA batteries
Weight 0.66 lbs / 300g (including battery)
Size 8.5 x 2.6 x1.5” (215 x 65 x 38mm)
Accessories Reflective tape (23"),cone and funnel rpm adaptor, surface
speed wheel, and carrying case
Electrical Specifications
Range Resolution Accuracy
(% rdg)
Photo
Tachometer
5 to 99,999 rpm 0.1 rpm (0.5 to 999.9 rpm)
1 rpm (over 1000 rpm)
±(0.05% + 1d)
Contact
Tachometer
0.05 to 19,999 rpm 0.1 rpm (0.5 to 999.9 rpm)
1 rpm (over 1000 rpm)
Surface
Speed
0.2 to 6560 ft/min 0.1 ft/min (0.1 to 999.9 ft/min)
1 ft/min (over 1000 ft/min)
± (1% rdg + 1d)
Surface
Speed
0.05 to 1999.9 m/min 0.01 m/min (0.05 to 99.99 m/min)
0.1 m/min (over 100 m/min)

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Meter Description
1. Reflective tape – In the non-contact mode of operation, place a small square piece
of tape on the object under test.
2. Sensor light source – In the non-contact mode, direct the light beam toward the
reflective tape while the device under test is moving.
3. Monitor indication – In the non-contact mode, the monitor switches on each time
the reflective tape breaks the light beam.
4. Measurement Display – Indicates the measurement result.
5. Memory button – Press to recall the stored LAST, MAX & MIN readings.
6. Function Switch – Select Tachometer or Linear Surface Speed mode.
7. Rotating shaft – In the contact mode of operation, carefully touch the shaft to the
moving object.
8. Measure button – Press to initiate a measurement.
9. 1`Battery compartment on rear

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Operation
Photo Tachometer
1. Slide the Function Switch to the "rpm PHOTO" position.
2. Apply a 0.5” (12mm) square piece of reflective tape to the object being measured.
3. Press the Measure button and align the visible light beam with the object being
measured. Check that the Monitor Indicator switches on (upper left-hand corner of
LCD) when the reflective tape passes through the light beam. Release the Measure
button once the display stabilizes (approx. 2 seconds). For best results, hold the
meter's light source 6 -12 inches from the object being measured. For best results,
minimize the ambient light as much as possible.
4. If the RPM measurement is less than 50,apply additional squares of reflective tape
(equidistant). Divide the reading shown on the display by the number of reflective
squares to get the actual RPM.
NOTE: Bright ambient light may interfere with the reflected light beam. Shading the
target area may be necessary in some cases.
CAUTION: Rotating objects can be dangerous. Use extreme care when holding the
meter near any such object.
Contact Tachometer
1. Slide the Function Switch to the "rpm CONTACT" position.
2. Press the Measure button while lightly pressing the rotating ring against the center
opening of a rotating shaft. Release the Measure button once the display has
stabilized (approx. 2 seconds).
CAUTION: Rotating objects can be dangerous. Use extreme care when holding the
meter near a rotating object.

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Surface Speed Measurement
1. Slide the Function Switch to "SURFACE SPEED ft/min" or "m/min".
2. Attach the Surface Speed Wheel to the meter shaft.
3. Press the Measure button and hold the surface speed wheel against the device
being measured (a conveyor belt, for example).
4. Release the Measure button once the display has stabilized (approx. 2 seconds).
CAUTION: Moving belts and other moving objects can be dangerous. Use extreme
care when taking measurements.
Memory Recall
When measuring, the LAST, MAX and MIN readings are automatically stored before the
Measure button is released. Recall the values by pressing the Memory button.
1. Press once and hold - the last value is displayed followed by "LA"
2. Press again and hold - the maximum value is displayed followed by "UP"
3. Press again and hold - the minimum value is displayed followed by "dn"
Battery Replacement
The low battery indication (LO) appears when the batteries need to be replaced.
To replace the batteries:
1. Open the rear battery compartment by removing the screw that secures it.
2. Replace the four 1.5V AA batteries.
3. Replace the battery cover.

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Warranty
FLIRSystems,Inc.warrantsthisExtechInstrumentsbranddevicetobefreeofdefectsinpartsandworkmanshipforoneyear
fromdateofshipment(asixmonthlimitedwarrantyappliestosensorsandcables).Ifitshouldbecomenecessarytoreturnthe
instrumentforserviceduringorbeyondthewarrantyperiod,contacttheCustomerServiceDepartmentforauthorization.Visit
thewebsitewww.extech.comforcontactinformation.AReturnAuthorization(RA)numbermustbeissuedbeforeanyproductis
returned.Thesenderisresponsibleforshippingcharges,freight,insuranceandproperpackagingtopreventdamageintransit.
Thiswarrantydoesnotapplytodefectsresultingfromactionoftheusersuchasmisuse,improperwiring,operationoutsideof
specification,impropermaintenanceorrepair,orunauthorizedmodification.FLIRSystems,Inc.specificallydisclaimsany
impliedwarrantiesormerchantabilityorfitnessforaspecificpurposeandwillnotbeliableforanydirect,indirect,incidentalor
consequentialdamages.FLIR’stotalliabilityislimitedtorepairorreplacementoftheproduct.Thewarrantysetforthaboveis
inclusiveandnootherwarranty,whetherwrittenororal,isexpressedorimplied.
Calibration,Repair,andCustomerCareServices
FLIRSystems,Inc.offersrepairandcalibrationservicesfortheExtechInstrumentsproductswe
sell.NISTcertificationformostproductsisalsoprovided.CalltheCustomerServiceDepartmentfor
informationoncalibrationservicesavailableforthisproduct.Annualcalibrationsshouldbe
performedtoverifymeterperformanceandaccuracy.Technicalsupportandgeneralcustomer
serviceisalsoprovided,refertothecontactinformationprovidedbelow.
Copyright©2013FLIRSystems,Inc.
Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform
www.extech.com
SupportLines:U.S.(877)439‐8324;International:+1(603)324‐7800
TechnicalSupport:Option3;E‐mail:[email protected]
Repair&Returns:Option4;E‐mail:[email protected]
Productspecificationsaresubjecttochangewithoutnotice
Pleasevisitourwebsiteforthemostup‐to‐dateinformation
www.extech.com
FLIRCommercialSystems,Inc.,9TownsendWest,Nashua,NH03063USA
ISO9001Certified

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Garantie
FLIRSystems,Inc.garantitquecetappareilExtechInstrumentsestexemptdedéfautsmatériauxetdefabricationpendantun
anàpartirdeladated’envoi(unegarantielimitéedesixmoiss’appliqueauxcapteursetauxcâbles).Silerenvoidel’appareil
pourréparationdevientnécessairedurantouaprèslapériodedegarantie,contactezleserviceclientpourautorisation.Pour
obtenirlescoordonnées,visitezlesiteWebsuivant:www.extech.com.Unnumérod’autorisationderetour(AR)doitêtredélivré
avanttoutretourdeproduit.L’expéditeurprendàsachargelesfraisd’expédition,lefret,l’assuranceetl’emballagecorrectde
l’appareilafindeprévenirtoutedétériorationdurantletransport.Cettegarantienes’appliquepasauxdommagesimputablesà
l’utilisateur,telsquel’usageimpropreouabusif,unmauvaiscâblage,uneutilisationnonconformeauxspécifications,un
entretienouuneréparationincorrecte,outoutemodificationnonautorisée.FLIRSystems,Inc.déclineraspécifiquementtoute
garantieouqualitémarchandeouaptitudeàl’emploiprévu,etneseraenaucuncastenuresponsablepourtoutdommage
conséquent,direct,indirectouaccidentel.LaresponsabilitétotaledeFLIRestlimitéeàlaréparationouauremplacementdu
produit.Lagarantiedéfinieci‐dessusestinclusiveetaucuneautregarantie,écriteouorale,n’estexpriméeouimplicite.
Calibrage,réparationetservicesaprès‐vente
FLIRSystems,Inc.offredesservicesdecalibrageetderéparationpourlesproduitsExtech
Instrumentsquenouscommercialisons.NousfournissonségalementunecertificationNISTpourla
plupartdesproduits.Contacteznotreserviceclientpourtouteinformationsurlesservicesde
calibragedisponiblespourceproduit.Uncalibragedoitêtreeffectuéchaqueannéepourvérifier
lesperformancesetlaprécisiondumètre.Nousoffronségalementuneassistancetechniqueetun
serviceàlaclientèle.Veuillezvousreporterauxcoordonnéesfourniesci‐dessous.
Copyright©2013FLIRSystems,Inc.
Tousdroitsréservés,ycomprislareproductionpartielleoutotalesousquelqueformequecesoit.
www.extech.com
Lignesd’assistance:États‐Unis(877)439‐8324;international:+1(603)324‐7800
Serviced’assistancetechnique:Option3;E‐mail:[email protected]
Réparationsetretours:Option4;E‐mail:[email protected]
Lesspécificationsproduitsontsujettesàmodificationssanspréavis.
Pourlestoutesdernièresinformations,veuillezvisiternotresiteWeb.
www.extech.com
FLIRCommercialSystems,Inc.,9TownsendWest,Nashua,NH03063USA
CertifiéISO9001

461895-EN V2.1 8/13
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Garantía
FLIRSystems,Inc.,garantizaestedispositivomarcaExtechInstrumentsparaestarlibrededefectosenpartesomanodeobra
duranteunañoapartirdelafechadeembarque(seaplicaunagarantíalimitadadeseismesesparacablesysensores).Sifuera
necesarioregresarelinstrumentoparaservicioduranteodespuésdelperiododegarantía,llamealDepartamentodeServicioa
Clientesparaobtenerautorización.Visitewww.extech.comparaInformacióndecontacto.Sedebeexpedirunnúmerode
AutorizacióndeDevolución(AD)antesderegresarcualquierproducto.Elremitenteesresponsabledelosgastosdeembarque,
flete,seguroyempaqueapropiadoparaprevenirdañosentránsito.Estagarantíanoseaplicaadefectosresultantesdelas
accionesdelusuariocomoelmaluso,alambradoequivocado,operaciónfueradelasespecificaciones,mantenimientoo
reparacióninadecuadaomodificaciónnoautorizada.FLIRSystems,Inc.,rechazaespecíficamentecualesquiergarantías
implícitasofactibilidaddecomercializaciónoidoneidadparacualquierpropósitodeterminadoynoseráresponsablepor
cualesquierdañosdirectos,indirectos,incidentalesoconsecuentes.LaresponsabilidadtotaldeFLIRestálimitadaala
reparaciónoreemplazodelproducto.Lagarantíaprecedenteesinclusivaynohayotragarantíayaseaescritauoral,expresao
implícita.
Serviciosdecalibración,reparaciónyatenciónaclientes
FLIRSystems,Inc.,ofreceserviciosdereparaciónycalibraciónparalosproductosquevendemos
deExtechInstruments.AdemásofrecemoscertificaciónNISTparalamayoríadelosproductos.
LlamealDepartamentodeServicioalClienteparasolicitarinformacióndecalibraciónparaeste
producto.Paraverificarelfuncionamientoyprecisiónsedeberealizarlacalibraciónanual.Además
seproveeSoporteTécnicoyserviciosgeneralesalcliente,consultelainformacióndecontactoen
seguida.
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Copyright©2013FLIRSystems,Inc.
Reservadostodoslosderechos,incluyendoelderechodereproduccióntotaloparcialencualquiermedio
www.extech.com
Líneasdesoporte:EE.UU.(877)439‐8324;Internacional:+1(603)324‐7800
SoporteTécnicoOpción3;correoelectrónico:[email protected]
Reparación/Devoluciones:Opción4;correoelectrónico:[email protected]
Lasespecificacionesdelproductoestánsujetasacambiossinaviso
PorfavorvisitenuestrapáginaenInternetparalainformaciónmásactualizada
www.extech.com
FLIRCommercialSystems,Inc.,9TownsendWest,Nashua,NH03063USA
CertificadoISO9001