General Tools & Instruments IRT659K Instruction Manual

12:1 INFRARED THERMOMETER
with “K” TYPE THERMOCOUPLE

& ADJUSTABLE EMISSIVITY

USER’S MANUAL

IRT659K

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

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 –3

Key Features & Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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

What’s in the Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Install Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 11

Using the IRT to Scan for Temperature . . . . . . . . . . . . . . . 6 –7

Choosing an IRT Display Mode . . . . . . . . . . . . . . . . . . . . . 7 –8

Adjusting Emissivity and Setting Temperature Alarms . . 8 – 10

Recalling Logged Measurements . . . . . . . . . . . . . . . . . . . . . . 10

Using the “K” Type Probe to Measure Temperature . . . 10 – 11

Full Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 12

Operating & Maintenance Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Return for Repair Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 – 15

INTRODUCTION

Thank you for purchasing General Tools & Instruments’ (General’s) IRT659K
12:1 Infrared Thermometer with “K” Type Thermocouple & Adjustable
Emissivity. Please read this manual carefully and thoroughly before using the
thermometer.

2

The IRT659K can measure surface temperature using either of two methods:
non-contact (using an IR thermometer with a laser pointer) or contact (using a
“K” type thermocouple). A “K” type thermocouple with a wide measurement
range is included in the package. The instrument automatically stores its last
10 IR readings in a nonvolatile memory for later recall in reverse chronological
order. During a single scanning session, the IRT659K simultaneously displays
real-time measurements on a main readout and the maximum, minimum,
average or largest difference between measurements during that session on
a smaller readout.

The IRT659K and “K” type thermocouple, a “9V” battery and this user’s manual
are sold together with a nylon pouch in a blister pack.

KEY FEATURES & SPECIFICATIONS

• 12:1 distance-to-spot (D:S) ratio

• -58° to 1202°F (-50° to 650°C) IRT measurement range

• -146° to 2498°F (-99° to 1370°C) “K” type thermocouple measurement
range; included thermocouple has 0° to 500°F (-18° to 260°C) range

• Backlit 1.5 in. (38.1mm) diagonal LCD

• IRT measurement accuracy of ±3°F (2°C) or ±2% of reading
(whichever is greater) above 32°F (0°C)

• Automatically holds measurements

• Automatically stores last 10 readings for recall

• Displays Min/Max/Avg/Dif temperatures captured during each
scanning session

• Settable high and low temperature alarms

• °C/°F, laser pointer on/off and backlight on/off switches

• ½ second response time

• Emissivity is adjustable from 0.1 to 1.0 (in 0.01 steps),
with default value of 0.95

• 30 second Auto Power Off

3

SAFETY INSTRUCTIONS

CAUTION!

The IRT659K is a Class II laser product that emits less than 3mW of radiation
at a wavelength between 630 and 660nm. Avoid looking directly at the laser
pointer. U.S. law prohibits pointing a laser beam at aircraft; doing so is
punishable by a fine of up to $10,000 and imprisonment.

The laser may cause discomfort if viewed directly. Your eyes’ natural aversion
reflex will prevent you from looking at the beam long enough to cause harm.
As a precaution, keep the IRT659K 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 the unit near a source of a strong electromagnetic field, such as

an arc welder or an induction heater.
Be careful not to burn yourself when attaching the thermocouple probe to a hot

surface.

WHAT’S IN THE PACKAGE

The IRT659K comes in a blister pack along with a “9V” battery, a nylon pouch
and this user’s manual. A wide temperature range “K” type thermocouple is
inside the pouch.

4

PRODUCT OVERVIEW

Fig. 1 shows all controls, indicators, connectors and other physical features of
the IRT659K. Fig. 2 shows all possible indications on the unit’s LCD. Familiarize
yourself with the positions of all controls and connectors and the meaning of all
display indications and icons before moving on to the Setup Instructions and
Operating Instructions.

A. Laser pointer
B. Infrared sensor
C. Measurement trigger
D. Battery compartment
E. LCD
F. MODE/SET button

쒅 LOG button

G.
H. °F/°C

쒆 button

I. IR/K (TC) button

J. / button

K. “K” type thermocouple probe

(shown inserted in socket)

E

F

J

H

Fig. 1

G

A

B

K

I

C

D

A. Low temperature alarm setpoint exceeded
B. High temperature alarm setpoint exceeded
C. Operating in scanning mode
D. Backlight on E. Laser pointer enabled
F. Low battery G. Main readout
H. Display mode indicators

I . “K” type thermocouple (TC)

measurement selected

J. Log # (01 to 10)
K. Log value L. Display mode value
M. Celsius unit N. Fahrenheit unit

AB

CDE

G

H

I

J

F

N

M

L

K

Fig. 2

5