Extech 461830 Operating Manual

User's Guide

Digital Stroboscope Tachometer

Model 461830 and Model 461831

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 [phone] 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.

Introduction

Congratulations on your purchase of the Extech Digital Stroboscope Tachometer. This
device measures the speed of moving parts such as gears, fans, propellers, centrifuges,
and pumps. The stop-motion action of this instrument permits the visual inspection of
moving parts. Careful use of this instrument will provide years of reliable service.

Model 461830/461831 Version 2.2 November 2003

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Safety

This symbol, adjacent to another symbol or terminal, indicates the user must refer
to the manual for further information.

This symbol, adjacent to a terminal indicates that, under normal use, hazardous

WARNING: Do not look directly at the Strobe’s Xenon lamp or its reflector.

WARNING: This device causes moving objects to appear still. Take precautions against

accidental contact with moving objects.

CAUTION: Do not touch the flash tube.

voltages may be present

Model 461830/461831 Version 2.2 November 2003

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