General Tools IRT730K User Manual

30:1 ULTRA WIDE-RANGE

IR THERMOMETER

WITH “K” PORT

USER’S MANUAL

IRT730K

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

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 –5

Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Install Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 10

Using the IRT to Measure Temperature . . . . . . . . . . . . . . . . . . . 6 –7

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

Adjusting Emissivity and Setting Temperature Alarms . . . . . . . . 8 –9

Recalling Stored Readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 10

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

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Operating & Maintenance Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 12

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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

Appendix I. How to Make Accurate IR Temperature Measurements . . 13 – 14

Appendix II. Emissivities of Common Materials . . . . . . . . . . . . . . . . . . . . . . 15

INTRODUCTION

Thank you for purchasing General Tools & Instruments’ (General’s) IRT730K 30:1 Ultra Wide­Range IR Thermometer with “K” Port. Please read this manual carefully and thoroughly before
using the thermometer.

The IRT730K measures 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
bead thermocouple with a measurement range of -40° to 500°F (-40° to 260°C) is included in
the package. Non-contact measurements made by the IRT can be adjusted for the emissivity
of the surface, increasing the accuracy of readings.

The instrument automatically stores (records) up to 100 temperature readings in nonvolatile
memory for later recall. During a single scanning session, the IRT730K simultaneously displays
real-time measurements on a primary (larger) readout and the maximum, minimum or average
measurement, or the largest difference between measurements, during that session on a
secondary (smaller) readout.

The IRT730K, the “K” type bead thermocouple, a “9V” battery and this user’s manual are
packaged in a soft pouch inside a box.

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KEY FEATURES

• Extremely wide measurement range

• Adjustable emissivity

• Laser targeting ring outlines analysis area

• Port for included “K” type bead thermocouple probe or another “K” type probe

• Releasing trigger holds measurement

• Automatically stores last 100 readings for recall

• Min/Max/Avg/Dif displays

• Adjustable Hi and Lo temperature alarm setpoints

• Large backlit LCD w/dual 4-digit readouts

• Auto power off

• °C/°F and laser on/off buttons

• Low battery indicator

• 3-year limited warranty

SAFETY INSTRUCTIONS

CAUTION!

The IRT730K is a Class 2 laser product that emits less than 1mW of radiation at a wavelength
between 630 and 670nm. 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
IRT730K 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 bead thermocouple probe to a hot surface.

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WHAT’S IN THE PACKAGE

The IRT730K comes in a soft pouch inside a box along with a “K” type bead thermocouple
probe, a “9V” battery and this user’s manual.

PRODUCT OVERVIEW

Fig. 1 shows all controls, indicators, connectors and other physical features of the IRT730K.
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.

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1

1. Laser pointer

2. Infrared sensor

3. Measurement trigger

4. Battery compartment

5. Jack for spade-type
thermocouple probe

6.

MODE

button

7. / (laser/backlight) button

8.

°C/°F

button

9. LCD

10. Laser identification/certification/
warning/safety labels
(on left side of unit);
see below

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8
7
6

Fig. 1. All controls, indicators, connectors
and other physical features of the IRT730K

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3

4

5

4

1. Scanning indication (flashes)

2. Emissivity setting

3. Laser pointer on

4. Backlight on

5. Operating in continuous
measurement mode (not used)

6. Selected temperature unit

7. Difference value on secondary readout

8. Average value on secondary readout

9. Minimum value on secondary readout

10. Secondary readout

11. Low battery icon

12. Low alarm setpoint

13. Low alarm activated

14. High alarm activated

15. High alarm setpoint

16. “K” type probe reading on
secondary readout

17. Minimum value on secondary readout

18. Automatically storing readings

19. Primary readout

20. Held reading on primary readout

Fig. 2. All possible display indications

SETUP INSTRUCTIONS

INSTALL BATTERY

The IRT730K’s battery compartment (Fig. 1, Callout 4) is below the measurement trigger and
accessible from the front of the grip. Before installing the “9V” battery included in the
package, remove the plastic wrap covering its terminals.

To install the battery:

1. Open the battery compartment by placing your thumb and forefinger in the indentations
on the sides of the grip and pulling the top of the hinged compartment forward.

2. Plug the “9V” battery into the wired socket inside the compartment. The terminals of the
battery and the socket mate in only one way, with the smaller male terminal plugging into
the larger female terminal.

3. Close the battery compartment cover by pushing its top against the grip until the cover
snaps shut.

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