Extech 42540 Operating Manual

User’s Manual

High Temperature InfraRed Thermometer

with Laser Pointer

MODEL 42540A

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42540

Introduction

Congratulations on your purchase of the Model 42540A IR Thermometer. The 42540A is
capable of non-contact (infrared) temperature measurements at the touch of a butto n. The
built-in laser pointer increases target accuracy while the backlit LCD and handy push­buttons combine for convenient, ergonomic operation. This meter is shipped fully tested
and calibrated and, with proper use, will provide years of reliable service.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and
workmanship for three (3) years 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.

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 Service Department for
information on calibration services available for this product. Extech recommends that
annual calibrations be performed to verify meter performance and accuracy.

Safety

• Use extreme caution when the laser pointer beam is on

• Do not point the beam toward anyone's eye or allow

the beam to strike the eye from a reflective surface

• Do not use the laser near explosive gases or in other
potentially explosive areas

Model 42540A V2.1 January 2006 2

Meter Description

1. Laser pointer beam

2. IR Sensor

3. Measurement Trigger

4. Battery and Switch Compartment

5. LCD Display

6. Push-buttons

7. Handle Grip

8. Temperature Units (ºC/ºF) Switch

9. Test Lock ON/OFF Switch

10. Alarm ON/OFF Switch

Note: There is a tripod mount on the bottom of the handle

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42540

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Model 42540A V2.1 January 2006 3