General IRTC40 Bedienungsanleitung

8:1 SCANNING

IR THERMOMETER

WITH

TRICOLOR LCD

USER’S MANUAL

IRTC40

Please ead this manual ca efully and tho oughly

befo e using this p oduct.

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . .3 –6

Key Features . . . . . . . . . . . . . . . . . . 6 –7

What’s in the ackage . . . . . . . . . . . . . . 7

Safety Instructions . . . . . . . . . . . . . . 7 –8

roduct Overview . . . . . . . . . . . . . 8 – 11

Setup Instructions . . . . . . . . . . . . . . . . 11

Activate Batteries . . . . . . . . . . . . . . 11

Operating Instructions . . . . . . . . . 12 – 18

Conventional IRT Mode . . . . . 12 – 13

Scan Mode . . . . . . . . . . . . . . . 13 – 16

Operating Tips . . . . . . . . . . . . 17 – 18

Specifications . . . . . . . . . . . . . . . 19 – 20

Maintenance Tips . . . . . . . . . . . . . 20 – 21

Warranty Information . . . . . . . . . . 21 – 22

General’s Return for Repair olicy . . . . 23

Guide de L'Utilisateur . . . . . . . . . 24 – 47

Manual del Usuario . . . . . . . . . . . 48 – 72

INTRODUCTION

Thank you for purchasing General Tools &

Instruments’ IRTC40—an 8:1 Scanning IR

Thermometer with Tricolor LCD. Please read

this manual carefully and thoroughly before

using the instrument.

The IRTC40 measures the surface

temperature of a surface or object from a

distance by using an infrared (IR) sensor to

quantify its thermal radiation. This non-

contact measurement capability allows you

to safely determine the temperature of very

hot or cold surfaces, inaccessible or hard-

to-reach objects and toxic substances. A

laser pointer identifies the target area being

measured. Readings are displayed on a

backlit LCD.

The IRTC40’s scanning function, which is

enabled by a three-color LCD backlight, is

an especially convenient and time-saving

feature. In many applications—such as

finding thermal leaks in a house or

detecting a batch of undercooked food—

the absolute temperature of a surface is

less important than the temperature of the

surface re ative to surfaces around it.

Engineers call this difference 욼T, and

understanding 욼T is the key to using the

scanning function of the IRTC40.

Another way to think of 욼T is as one-half

the width of a temperature “window”

centered on a reference temperature. As an

example, for a reference temperature (Tref)

of 75°F, choosing a 욼T of 5°F would

establish a temperature window that spans

the 10° difference between 70° and 80°.

Any surface cooler than 70° would fall

below the cold edge of the temperature

window. Any surface hotter than 80° would

fall above the hot edge of the window.

What the IRTC40 does extremely well and

quickly is to place scanned targets into one

of three color-coded categories: green for

targets within the temperature window (Tref

p us and minus 욼T), red for targets hotter

than Tref plus 욼T, and blue for targets

cooler than Tref minus 욼T. The instrument

simultaneously uses sound to categorize

scanned targets by temperature. Targets

colder than the reference temperature ±욼T

generate a slow beeping sound and a

display indication of LOW, targets hotter

than the reference temperature ±욼T

produce fast beeping and a display

indication of HIGH, and targets within the

“Goldilocks” zone—not too hot and not too

cold—yield silence and a display indication

of NORMAL.

The IRTC40 automatically enters

conventional (non-scanning) IRT mode

when you squeeze and hold the trigger for

three seconds. To enter scanning mode, you

set a reference temperature and a “setpoint

bandwidth” representing twice the value of

욼T. In practice, what most professionals

use as a reference is something they

consider at “normal” temperature—an

interior wall of a room, for example. Setting

the IRTC40’s reference temperature to this

value requires that you point the gun at the

reference object and press a button on the

front panel. Doing so causes that

temperature to appear at the right of the

term REF on the LCD.

In scanning mode, the setpoint bandwidth

can be set to any of three values—

1°F (0.5°C), 5°F (3°C) or 10°F (5.5°C).

The bandwidth you choose should be

appropriate for the application. Typically, the

narrowest setpoint band (1°F/0.5°C) is used

to monitor the temperature of processes

requiring precise quality control (food

preparation, for example). The two wider

bands ±5°F (3°C) and ±10°F (5.5°C) are

used to detect deviations from normal that

are more tolerable (a small heat leak

through a crack in a wall that would be too

expensive to repair, for example).

KEY FEATURES

• In scanning mode, LCD backlight color

(red, green or blue) and beeper speed

(fast, silent or slow) indicate—with no

need to check readout—whether

temperature of target is above, within or

below reference temperature ± setpoint

bandwidth.

• Choice of three setpoint bandwidths:

1°, 5° and 10°F (0.5°, 3° and 5.5°C)

• Ideal for making relative temperature

measurements—such as in energy

auditing

• Large backlit LCD automatically holds

reading when trigger is released

• Accuracy of 2% of reading or 3.6°F (2°C)

• To extend battery life, backlight shuts off

after 15 seconds of inactivity and

instrument powers off after 60 seconds

WHAT’S IN THE PACKAGE

The IRTC40 comes in a blister pack with a

wrist strap and two pre-installed “AAA”

batteries. A hard copy of this user’s manual

is inside the fold-over blister card.

SAFETY INSTRUCTIONS

CAUTION!

The IRTC40 is a C ass 3R aser product that

emits ess than 5mW of radiation. Avoid

ooking direct y at the aser pointer. U.S. aw

prohibits pointing a aser beam at aircraft;

doing so is punishab e by a fine of up to

$10,000 and imprisonment.

The laser may cause discomfort if viewed

directly. Your eyes’ nature aversion reflex

will prevent you from looking at the beam

long enough to cause harm. owever, keep

the IRTC40 out of the hands of children,

especially if you have pets.

Never stare at the laser beam through

binoculars or a magnifying glass.

Do not operate the IRT in the presence of

flammable or explosive gases or in

environments full of dust or static

electricity.

Do not operate near sources of strong

electromagnetic fields, such as arc welders

or induction heaters.

PRODUCT OVERVIEW

Fig. 1 shows all of the controls, indicators

and physical features of the IRTC40. Fig. 2

shows all of the icons and text that may

appear on the LCD. Familiarize yourself with

the locations and functions of the controls

and the meanings of the display icons

before moving on to the Setup and

Operating Instructions.

/OFF

button

LCD

°C/°F/SET button

Laser pointer exit

IR sensor and lens

Measurement trigger

Battery compartment

L ser

identific tion/

certific tion/

w rning/s fety

l bels (on left side

of gun)

(OPEN)

Fig. 1

Fig. 2

1. Relationship of currently scanned

temperature to reference temperature

± setpoint bandwidth

2. Indicates measurement is taking place

3. Battery charge indicator

4. Temperature readout

5. Indicates reference temperature is at

right

6. pointers to selected setpoint

bandwidth, stenciled on housing directly

below LCD. Options are OFF, 1°F (0.5°C),

5°F (3°C) and 10°F (5.5°C)

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