Extech BR146 Operating Manual

User's Guide

Flexible Borescope

Model BR146

Introduction

Congratulations on your purchase of the Extech BR146. This product is used for
inspection of areas generally inaccessible to the naked eye, such as internal inspection
of engines, gear train components, interior structures of walls, and industrial applications.
Illumination is provided by two solid state LEDs which are controlled by a three position
switch, giving low, off, and high output. Lighting is powered by 4 “AA” batteries located in
the handle. The adjustable eyepie ce fo cus a llows the user to fin e tune for obje ct distance.
The scope comes in a protective case for storage. An accessory mirror allows the user
to see 90 degrees to the axis of the shaft. The Magnet accessory will pick up approx 1/4
lb. This device is shipped fully tested and, with proper use, will provide years of reliable
service

Safety

PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE

OPERATIONAL REQUIREMENTS, WARNINGS AND CAUTIONS. USE THIS

PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT

IS INTENDED. FAILURE TO DO SO COULD CAUSE DAMAGE AND/OR

PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. PLEASE KEEP

THESE INSTRUCTIONS FOR FUTURE USE.

• DO NOT use flexible inspection scope if damaged

• Do not point the tip toward the Sun or other intense source of light while viewing.

Permanent eye damage may occur.

• Maintain your scope in new condition as detailed in MAINTENANCE for long service

• Be aware of your surrounding environment while using your inspection scope

• Account for all tools and parts being used or serviced and do not leave loose parts

near moving parts of an engine

STOP IMPORTANT:

Specifications

Viewing distance: 0.4”(10mm) to infinity
Viewing Angle 48°
Side View Adaptor: 90°
Tip Diameter 0.39” (10mm)
Working Length: 46” (1168mm)
Maximum bend radius 3” (7.62cm)
Optical system: fiber optic (7400 fibers)
Illumination LED (2) (High/Low intensity selection)
Max probe temperature 158°F / 70°C
Shaft material HDPF
Housing material Nylon
Compatibility Water, diesel, gasoline, brake

Power 4 AA batteries
Weight: 1.15lb (0.52kg)
Carrying Case Dimensions: 17 x 13 x 4.5” (432mm x 330mm x 114mm)

fluid, antifreeze, motor oil, gear oil and other liquids

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BR146 V2.0 9/08

Description

1. Eyepiece and Focus

2. LED ON and intensity switch

3. Handle

4. Battery compartment

5. Shaft

6. Tip and Light source

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2

3

4

5

6

Operation

WARNING! Be careful when inserting or removing the scope shaft from the equipment under

WARNING! Use extra care when using mirror or magnet accessories. Accessories may

DO NOT bend any part of the shaft tighter than a 3 inch radius ( 6 inch

DO NOT expose the scope housing to water or other fluids.
DO NOT insert the scope shaft and tip into locations whose temperature is

1. Note the location and distance of the object to be inspected and determine

2. View the object through the eyepiece. Adjust the focus as necessary by

3. Press the switch below the eyepiece to turn on the LED light. A left press

4. Attach the side view mirror or retrieval magnet to the tip as shown. Make

NOTE: The base of the mirror or magnet should be aligned over the flat side of

inspection.

detach if snagged.

diameter).

greater than 158º/F70ºC.

the best route to it. Bend the shaft to follow the route.

turning the eyepiece.

is high intensity, right press is low intensity (extends battery life).

sure the spring clip is fully secure in the recessed groove provided.

the tip.

Maintenance

BATTERY REPLACEMENT

WARNING ! Make sure switch is in the off position prior to maintenance and/or battery
replacement.

1. Remove the battery housing door with a Phillips screwdriver.

2. Un-clip the connector - if required - and replace batteries in the pack. Dispose of
batteries properly.

3. Re-attach connector and re-insert battery pack into bottom of handle.

4. Re-assemble battery door. Do not over tighten screw.

CLEANING AND STORAGE

After each use, wipe down the tip and shaft with a clean, dry cloth to remove fluids and
residue. If needed, clean the shaft with a cloth dampened with a mild soap detergent
Gently clean the lens and eyepiece with a cotton swab dampened with a lens cleaner
such as isopropyl alcohol.

NOTE: Your inspection scope MUST be completely dry before returning it to the

storage case.

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BR146 V2.0 9/08

Warranty

EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) 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 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 at [phone] ext. 210 for authorization or visit our
website www.extech.com for contact information. 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.

Calibration and Repair Services

Extech offers repair and calibration services for the products we sell. Extech also
provides NIST certification for most products. Call the Customer Care Department for
information on calibration services available for this product. Extech recommends that
annual calibrations be performed to verify meter performance and accuracy.

Copyright © 2008 Extech Instruments Corporation (a FLIR company)

All rights reserved including the right of reproduction in whole or in part in any form.

Technical Support: Extension 200; E-mail: [e-mail]

Repair & Returns: Extension 210; E-mail: [e-mail]

Product specifications subject to change without notice

For the latest version of this User Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com

Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451

Support line [phone]

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BR146 V2.0 9/08