General Tools General Tools IRT105 Manual

6:1 POCKET INFRARED

THERMOMETER

USER’S MANUAL

IRT105

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Please read this manual carefully and thoroughly before using this product.

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Safety Instructions . . . . . . . . . . . . . . . . . . . . . . 4

What’s in the Blister Pack . . . . . . . . . . . . . . . . 5

Product Overview . . . . . . . . . . . . . . . . . . . . 5 –6

Setup Instructions . . . . . . . . . . . . . . . . . . . 6 –7

Install Two Batteries . . . . . . . . . . . . . . . . 6 –7

Operating Instructions . . . . . . . . . . . . . . . 7 – 16

Making Basic Measurements . . . . . . . . . 7 –8

Advanced Measurement Modes

and Functions . . . . . . . . . . . . . . . . . . . . 8 – 11

Accounting for Emissivity . . . . . . . . . .11 – 13

Making Accurate Measurements . . . . 14 – 16

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 17

Warranty Information . . . . . . . . . . . . . . . . . . . 18

Return for Repair Policy . . . . . . . . . . . . . . . . 19

Manual del Usuario . . . . . . . . . . . . . . . . 20 – 39

Manuel de L'Utilisateur . . . . . . . . . . . . . 40 – 59

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INTRODUCTION

Thank you for purchasing General Tools & Instruments’
IRT105 6:1 Pocket Infrared Thermometer. Please read this
user’s manual carefully and thoroughly before using the
instrument.

The IRT105 is a small and lightweight non-contact
thermometer that measures the surface temperature of an
object from a distance by using an IR sensor to measure its
thermal radiation. A laser pointer defines the target area
(spot) whose temperature is being measured.

The thermometer has a wide measurement range of

-22° to 482°F (-30° to 250°C) and a distance-to-spot ratio
of 6:1. These two specifications—as well as its adjustable
emissivity and its high basic measurement accuracy
(±3°F above 32°F) —make the IRT105 ideally suited for
applications in food processing, electrical troubleshooting,
and automotive and HVAC equipment maintenance. In
applications such as these, an infrared thermometer is the
only instrument capable of taking the temperature of a
surface that may be impossible to reach or too hot or cold to
touch.

The IRT105 comes in a blister pack with two non­rechargeable CR2032 Lithium-ion batteries to power its
thermometer and laser pointer.

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KEY FEATURES

• Optimized measurement range

• Basic accuracy of ±3°F

• Adjustable emissivity

• Fast response time

• Min and Max measurement modes + Measurement
Lock mode

• Selectable °F or °C unit

• Large LCD

• Separate batteries for thermometer and laser

• Auto power off

• Small and light and easy to use

SAFETY INSTRUCTIONS

CAUTION: Use of controls or adjustments or performance of
procedures other than those specified herein may result in
dangerous radiation exposure.

The IRT105’s targeting laser is a Class 2 type that emits less
than 1mW of power at a wavelength of 655nm. Avoid direct
eye contact with laser light radiation. U.S. law prohibits
pointing a laser beam at aircraft; doing so is punishable by a
fine of up to $10,000 and imprisonment.

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WHAT’S IN THE BLISTER PACK

The IRT105 comes in a plastic blister pack with two CR2032
batteries, a wrist strap and this user’s manual.

PRODUCT OVERVIEW

Figure 1 shows the locations of the controls, indicators and
physical features of the IRT105.

I

G

H

Fig. 1. The IRT105’s controls, indicators
and physical features

A. Meas. (measure) button B. Mode button
C. Wrist strap attachment bar
D. Laser pointer E. IR sensor window
F. Liquid-crystal display
G. Thermometer battery compartment
H. Laser battery compartment
I. Laser Laser Identification/

Certification/Warning/
Safety Labels (on left side)

C

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Figure 2 shows the icons and text that may appear on the
display. Familiarize yourself with the locations of these
controls and the meanings of these icons before moving on to
the setup and operating instructions.

Fig. 2.
All possible display
indicators and
their meanings

A. Low Battery icon
B. Laser Enabled icon
C. Displaying highest measurement
D. Displaying lowest measurement
E. Operating in emissivity selection mode
F. Operating in measurement lock mode
G. Celsius unit selected
H. Fahrenheit unit selected

I. Measured value

SETUP INSTRUCTIONS

INSTALL TWO BATTERIES

Two CR2032 batteries (included) must be installed in separate
compartments in the back of the IRT105 (callouts G and H of
Fig. 1) to activate its thermometer and laser pointer. To open
either compartment, place the tips of your thumb and index
finger against the bumps on the round compartment cover
and turn clockwise. Insert each battery so the writing

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