Extech Instruments 461895 Instruction Manual

Combination contact/photo tachometer

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1. INTRODUCTION

Congratulations on your purchase of Extech's 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.

Features

•

Use of an exclusive micro-computer LSI-circuit and crystal time base offers high 0.05%

accuracy and fast measuring time

•

RPM measurements span wide ranges: 5 to 99,999 RPM for photo tachometer and 0.5

to 20,000 RPM for contact tachometer

•

Suppression of insignificant zeroes in large, 5 digit LCD display provides exact RPM

while saving battery power

•

Last value and last max/min readings can be automatically stored and recalled

Extech 461895 Combination Contact Photo Tachometer

Extech 461895-NIST Combination Contact Photo Tachometer

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INSTRUCTION MANUAL

English / Espanola

Model 461895

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Table of Contents

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Page 1 COMBINATION CONTACT/PHOTO TACHOMETER 1. INTRODUCTION Congratulations on your purchase of Extech's 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.
Page 2 3. FRONT PANEL DESCRIPTION 3-1 Reflective tape 3-2 Signal light beam 3-3 Monitor indicator 3-4 Display 3-5 Measure button 3-6 Memory button 3-10 3-7 Function switch 3-8 Rotating ring 3-9 Circumferential speed ring 3-10 Battery compartment 461895 V1.8 August 2001 actoolsupply.com...
Page 3 5.1 The low battery indication appears as a "LO" on the display. 5.2 To replace the battery: a) Loosen the screw on the battery cover (3-10, Fig. 1) and remove. b) Replace with 4 x 1.5V AA batteries and replace cover. 461895 V1.8 August 2001 actoolsupply.com...
Page 4 7. 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).

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