EXTECH Contact Tachometer Model 461891 user manual
Contents
1. Copyright 2002 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form a Support Hotline 781 890 7440 Tech support Ext 200 Email support extech com Repair Returns Ext 210 Email repair extech com Website www extech com 4 461891 Ver 1 9 7 022. customer service for details on services available Extech recommends that calibration be performed on an annual basis to insure calibration integrity Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment a six month limited warranty applies on 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 at 781 890 7440 ext 210 for authorization or visit our website at www extech com click on Contact Extech and go to Service Department to request an RA number A Return Authorization RA number must be issued before any product is returned to Extech 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 Extech 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 Extech 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
3. User s Guide EXTECH INSTRUMENTS Contact Tachometer Model 461891 Measures from 0 5 to 19999 rpm Min Max Memory Recall Cone funnel surface attachments included Quartz crystal time base EXTECH To MEMORY Introduction Congratulations on your purchase of Extech s Digital Tachometer This professional meter with proper care will provide years of safe reliable service Specifications General Specifications Custom one chip LSI microprocessor circuit Display 5 digit multi function LCD display Measurements Rotation Speed 0 5 to 19 999 rpm Surface Speed 0 2 to 6560 ft min 0 05 to 1999 9 m min Accessories Cone rpm adaptor funnel rom adaptor surface speed test wheel and carrying case Range Specifications 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 59C 1 ft min over 1000 ft min 0 1 m min over 100 m min 2 461891 Ver 1 9 7 02 Front Panel Description Shaft with cone adapter attached LCD display Measure button Function select switch Memory button Funnel adapter attachment N DO oO BR U N Be Surface wheel adapter 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
4. 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 con c Press again and hold the minimum value is displayed followed by the dn icon 3 461891 Ver 1 9 7 02 Maintenance Battery Replacement When the low battery indication appears LO on the display slide the battery cover off of the rear of the instrument replace batteries with four 1 5V AA batteries and replace the cover Remove the batteries if the instrument will not be used for a long period of time Cleaning Use only a dry cloth to clean the plastic case Calibration Repair Services Extech offers complete repair and calibration services for all of the products we sell For periodic calibration NIST certification or repair of any Extech product call
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EXTECH Contact Tachometer Model 461891 user manual