Extech BR136 Operating Manual

User's Guide

Flexible Borescope

Model BR136

Congratulations on your purchase of the Extech BR136 Flexible
Borescope. This device includes a bright light to illum inate the
viewed object and has a Removable 90 degree side viewing
adaptor that rotates 360 degrees. This device is shipped fully
tested and, with proper use, will provide years of reliable
service.

Operation

Slide the Light On/Off button up to turn on the object
illumination light. Slide it down to turn the light off.

Viewing

Look through the eyepiece. The image is
broken up in pixels. This is because individual
optical fibers are used to carry the image from
the end of the borescope to the eyepiece.

Focusing

Turn the knurled portion of the eyepiece to sharpen the image.
This compensates for differences in eyesight only.

Mirror

The borescope is fitted with a 90°
view mirror tip that can be rotated
360°. The mirror tip can also be
removed for straight-on viewing.

Cleaning

1. Wipe the cable down with a lint free cloth to remove
any liquid

2. Immerse the cable with a mild soap solution, gently
clean with a sponge or int free cloth and rinse with
clean water

3. Clean the lens with a cloth dipped in alcohol.

Storage

The BR136 should be completely dried before storage. Wipe
the lenses dry with a cotton swab and clean lens surfaces with
a lens cleaner such as silica wax to prevent water marks

Battery Replacement

Press the battery compartment
release button to remove the battery
compartment from the base of the
handle. Replace the 3 AA batteries
and replace the compartment.

Battery
Compartment

Focus

Light On/Off

Battery Compartment
Release

Side View Adaptor

Depth of Observation: 1 – 6” (30 – 150mm)
Viewing Direction 0°
Side View Adaptor: 90°, Viewing Angle 45°
Shaft Diameter: 0.35” (9mm)
Tip Diameter 0.31” (8mm)
Side View Adaptor Dia.: 0.39” (10mm)
Working Length: 46” (1168mm)
Optical system: fiber optic (7200 fibers)
Illumination LED with 100,000 hr life
Probe Temp. withstand 14°F to 176°F (-10°C to 80°C)
Compatibility Water, diesel, gasoline, brake

fluid, antifreeze, motor oil, gear oil

and kerosene
Power 3 AA batteries
Weight: 13oz. (370g)
Carrying Case Dimensions: 13 x 9.84 x 2.75” (330mm x

250mm x 70mm)

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 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 Authori zation (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.

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

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’s Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451

Copyright © 2007 Extech Instruments Corporation

Support line [phone]

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BR136 V2.2 5/07