Extech Instruments 461891 User manual

USER GUIDE
Contact Tachometer
Model 461891

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Introduction
Congratulations on your purchase o Extech’s Digital Tachometer, model 461891. This meter is
shipped ully tested and calibrated and, with proper use, will provide years o reliable service.
Features
 Measures rom 0.5 to 19999 rpm
 Min/Max Memory Recall
 Cone, unnel, sur ace attachments included
 Quartz crystal time base
Specifications
General Specifications
Circuit Custom one-chip LSI microprocessor circuit
Time base Quartz crystal
Display 5-digit multi unction LCD display
Measurements Rotation Speed 0.5 to 19,999 rpm
Sur ace Speed 0.2 to 6560 t/min.
0.05 to 1999.9 m/min
Memory Last and Max/Min readings
Sampling Time 1 second
Operating Temperature/RH 32 °F to 122 °F (0 °C to 50 °C) / <80% RH
Power Supply 4 x 1.5V AA batteries
Power Consumption Approx. 10 mA
Weight 0.62 lb (280 g) including batteries
Dimensions 8.2 x 2.8 x1.5" (208 x 72 x 37 mm)
Accessories Cone rpm adaptor, unnel rpm adaptor, sur ace speed
test wheel, and carrying case
Range Specifications
Range Resolution
Accuracy
rpm 0.5 to 19,999 rpm 0.1 rpm (0.5 to 999.9 rpm)
1 rpm (over 1000 rpm)
+ (0.05% rdg +1d)
@23+ 5oC
ft/min 0.2 to 6560 t/min 0.1 t/min (0.2 to 999.9 t/min)
1 t/min (over 1000 t/min)
± (1% rdg + 1 digit)
m/min 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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Front Panel Description
1 Shaft with cone adapter attached
2 LC display
3 Measure button
4 Function select switch
5 Memory button
6 Cup attachment
7 Surface wheel attachment
Operation
RPM Measurement
a) Slide the Function Switch to the "RPM" position.
b) Install the appropriate RPM Adapter on the Shaft
c) Press the Measure button while lightly pressing the RPM adapter against the central
opening of a rotating shaft in proper alignment. Release the Measure button when the
display stabilizes (about 1 to 2 seconds).
Surface Speed Measurement
a) Slide the Function Switch to "ft/min" or "m/min"
b) Attach the Surface Speed Wheel to the Shaft
c) Press the Measure button and hold the surface speed wheel against the device being
measured. Release the Measure button when the display stabilizes.
Memory Recall
The last value and last max and min values obtained before releasing the Measure button are
automatically stored by the meter. These memorized values can be displayed by pressing the
Memory button as described below:
a) Press once and hold - the last value is displayed followed by the "LA" icon
b) Press again and hold - the maximum value is displayed followed by the "UP"I con
c) Press again and hold - the minimum value is displayed followed by the "dn" icon

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Maintenance
Battery Replacement:
When the low battery indication a ears ("LO" on the dis lay), slide the battery cover off of the rear
of the instrument, re lace batteries with four 1.5V AA batteries and re lace the cover. Remove the
batteries if the instrument will not be used for a long eriod of time.
Cleaning: Use only a dry cloth to clean the lastic case.
Accessories:
Part # 461990 Kit contains: Qty. of 2 each: cone, wheel, and cu ; Qty. 1 shaft

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Warranty
FLIRSystems, Inc. warrantsthisExtech Instruments brand device to be free of defects in partsand workmanship for one year
from date of shipment (a six month limited warranty applies to sensorsand cables). If it should become necessary to return the
instrument for service during or beyond the warranty period, contact theCustomer 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. Thesender isresponsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit.
Thiswarranty doesnot apply to defects resulting from action of the user such asmisuse, improper wiring, operation outsideof
specification, improper maintenance or repair, or unauthorized modification. FLIRSystems, Inc. specifically disclaimsanyimplied
warrantiesor merchantability or fitnessfor a specific purpose and will not be liablefor any direct, indirect, incidental or
consequential damages. FLIR’stotal liability is limited to repair or replacement of theproduct. Thewarranty set forth above is
inclusiveand no other warranty, whether written or oral, isexpressed or implied.
Calibration, Repair, and Customer Care Services
FLIRSystems, Inc. offersrepair and calibration services for the Extech Instrumentsproducts we
sell. NISTcertification for most products isalso provided. Call the Customer Service Department for
information on calibration servicesavailable for thisproduct. Annual calibrations should be
performed to verify meter performance and accuracy. Technical support and general customer
service isalso provided, refer to the contact information provided below.
Copyright © 2013-2015 FLIRSystems, Inc.
All rightsreserved includingthe right of reproduction in whole or in part in any form
www.extech.com
Support Lines: U.S. [phone]; International: [phone]
Technical Support: Option 3; E-mail: [e-mail]
Repair & Returns: Option 4; E-mail: [e-mail]
Product specificationsare subject to change without notice
Please visit our website for the most up-to-date information
www.extech.com
FLIRCommercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA
ISO9001 Certified

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Garantie
FLIRSystems, Inc. garantit que cet appareil Extech Instrumentsest exempt dedéfauts matériaux et defabrication pendant un
an à partir de la date d’envoi (unegarantie limitée desix moiss’appliqueaux capteurs et aux câbles). Si le renvoi de l’appareil
pour réparation devient nécessaire durant ou aprèsla période degarantie, contactezle serviceclient pour autorisation. Pour
obtenir lescoordonnées, visitezlesite Web suivant : www.extech.com. Un numéro d’autorisation deretour (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’emballagecorrect de
l’appareil afin deprévenir toute détérioration durant letransport. Cettegarantie ne s’appliquepasauxdommagesimputablesà
l’utilisateur, tels que l’usageimpropre ou abusif, un mauvaiscâblage, uneutilisation non conforme auxspécifications, un
entretien ou uneréparation incorrecte, ou toute modification non autorisée. FLIRSystems, Inc. déclinera spécifiquement toute
garantie ou qualité marchandeou aptitude à l’emploi prévu, et nesera en aucun castenu responsable pour tout dommage
conséquent, direct, indirect ou accidentel. La responsabilité totale de FLIRest limitée à la réparation ou au remplacement du
produit. La garantie définie ci-dessusest inclusive et aucune autregarantie, écrite ou orale, n’est exprimée ou implicite.
Calibrage, réparation et servicesaprès-vente
FLIRSystems, Inc. offre des services de calibrage et de réparation pour lesproduits Extech
Instrumentsque nous commercialisons. Nousfournissonségalement une certification NISTpour la
plupart desproduits. Contactez notre service client pour toute information sur les servicesde
calibrage disponibles pour ce produit. Un calibrage doit être effectué chaque année pour vérifier les
performances et la précision du mètre. Nousoffronségalement une assistance technique et un
service à la clientèle. Veuillez vous reporter aux coordonnéesfourniesci-dessous.
Copyright © 2013-2015 FLIRSystems, Inc.
Tous droits réservés, y comprisla reproduction partielle ou totale sousquelque forme que ce soit.
www.extech.com
Lignesd’assistance: États-Unis(877) 439-8324; international: [phone]
Service d’assistance technique : Option 3 ; E-mail : [e-mail]
Réparationset retours: Option 4 ; E-mail : [e-mail]
Les spécifications produit sont sujettes à modifications sans préavis.
Pour lestoutes dernièresinformations, veuillez visiter notre site Web.
www.extech.com
FLIRCommercial Systems, Inc., 9 Townsend West, Nashua, NH03063 USA
Certifié ISO9001

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Garantía
FLIRSystems, Inc., garantiza este dispositivo marca Extech Instruments para estar libre de defectosen parteso mano deobra
durante un año a partir dela fecha de embarque(se aplica una garantía limitada deseismesespara cables ysensores). 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) antesde regresar cualquier producto. El remitente esresponsable de los gastosdeembarque,
flete, seguro y empaqueapropiado para prevenir dañosen tránsito. Esta garantía no se aplica a defectosresultantesde las
acciones del usuario como el mal uso, alambrado equivocado, operación fuera de las especificaciones, mantenimiento o
reparación inadecuada o modificación no autorizada. FLIRSystems, Inc., rechaza específicamente cualesquier garantías
implícitas o factibilidad decomercialización o idoneidad para cualquier propósito determinado y no será responsable por
cualesquier dañosdirectos, indirectos, incidentaleso consecuentes. La responsabilidad total de FLIRestá limitada a la reparación
o reemplazo del producto. La garantía precedente esinclusiva y no hay otra garantía ya sea escrita u oral, expresa o implícita.
Serviciosde calibración, reparación y atención a clientes
FLIRSystems, Inc., ofrece servicios de reparación y calibración para losproductosque vendemos
de Extech Instruments. Ademásofrecemoscertificación NIST para la mayoría de losproductos.
Llameal 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 serviciosgenerales al cliente, consulte la información de contacto en
seguida.
Copyright © 2013-2015 FLIRSystems, Inc.
Reservados todos los derechos, incluyendo el derecho de reproducción total o parcial en cualquier medio
www.extech.com
Líneasde soporte: EE.UU. [phone]; Internacional: [phone]
Soporte Técnico Opción 3; correo electrónico: [e-mail]
Reparación / Devoluciones: Opción 4; correo electrónico: [e-mail]
Las especificacionesdel producto están sujetas a cambiossin aviso
Por favor visite nuestra página en Internet para la información más actualizada
www.extech.com
FLIRCommercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA
Certificado ISO9001