Amprobe IR-750 User Manual

IR-750

50:1 IR Thermometer
with memory

Users Manual

• Mode d’emploi

• Bedienungshandbuch

• Manual d’Uso

• Manual de uso

• Användarhandbok

IR-750

50:1 IR Thermometer with memory

Users Manual

October 2011, Rev.1
©2011 Amprobe Test Tools.
All rights reserved. Printed in China

English

Limited Warranty and Limitation of Liability

Your Amprobe product will be free from defects in material and workmanship for 1 year from
the date of purchase, unless local laws require otherwise. This warranty does not cover fuses,
disposable batteries or damage from accident, neglect, misuse, alteration, contamination, or
abnormal conditions of operation or handling. Resellers are not authorized to extend any other
warranty on Amprobe’s behalf. To obtain service during the warranty period, return the product
with proof of purchase to an authorized Amprobe Test Tools Service Center or to an Amprobe
dealer or distributor. See Repair Section for details. THIS WARRANTY IS YOUR ONLY REMEDY.
ALL OTHER WARRANTIES - WHETHER EXPRESS, IMPLIED OR STAUTORY - INCLUDING IMPLIED
WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, ARE HEREBY
DISCLAIMED. MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since
some states or countries do not allow the exclusion or limitation of an implied warranty or of
incidental or consequential damages, this limitation of liability may not apply to you.

Repair

All test tools returned for warranty or non-warranty repair or for calibration should be
accompanied by the following: your name, company’s name, address, telephone number, and
proof of purchase. Additionally, please include a brief description of the problem or the service
requested and include the test leads with the meter. Non-warranty repair or replacement charges
should be remitted in the form of a check, a money order, credit card with expiration date, or a
purchase order made payable to Amprobe® Test Tools.

In-Warranty Repairs and Replacement – All Countries

Please read the warranty statement and check your battery before requesting repair. During the
warranty period any defective test tool can be returned to your Amprobe® Test Tools distributor for
an exchange for the same or like product. Please check the “Where to Buy” section on www.amprobe.
com for a list of distributors near you. Additionally, in the United States and Canada In-Warranty repair
and replacement units can also be sent to a Amprobe® Test Tools Service Center (see address below).

Non-Warranty Repairs and Replacement – US and Canada

Non-warranty repairs in the United States and Canada should be sent to a Amprobe® Test Tools
Service Center. Call Amprobe® Test Tools or inquire at your point of purchase for current repair
and replacement rates.

In USA In Canada
Amprobe Test Tools Amprobe Test Tools
Everett, WA 98203 Mississauga, ON L4Z 1X9
Tel: 877-AMPROBE (267-7623) Tel: [phone]

Non-Warranty Repairs and Replacement – Europe

European non-warranty units can be replaced by your Amprobe® Test Tools distributor for a
nominal charge. Please check the “Where to Buy” section on www.amprobe.com for a list of
distributors near you.

European Correspondence Address*
Amprobe® Test Tools Europe
Beha-Amprobe GmbH
In den Engematten 14
79286 Glottertal, Germany
Tel.: [phone] - 0
www.amprobe.eu
*(Correspondence only – no repair or replacement available from this address. European
customers please contact your distributor.)

IR-750 50:1 IR Thermometer with memory

1

5

6

7

2 3

1613

89

19

12

17

14

20

Laser Aperture

1

Trigger

2

Battery Cover

3

Display

4

USB connector

5

K-type thermocouple connector

6

Power adaptor connector

7

(for optional accessory)

Laser “ON” symbol

8

Display backlight

9

11
10

15

18

10

Measurement lock

(Continuous measurement)

11

Temperature unit

(Celsius / Fahrenheit)

12

8 seconds auto display hold

13

Making measurement

(Pulling the trigger)

14

Built in memory up to 99 points

15

Programmable high and low alarm

16

Low battery indicator

17

Primary display

18

Secondary display

19

Emissivity

(Adjustable from 0.10 to 1.00)

20

MAX, MIN, DIF, AVG

temperature values

HAL, LAL temperature setting
DATA point selection

T-C K-type thermocouple
measurement

4

IR-750 50:1 IR Thermometer with memory

CONTENTS

SYMBOL .................................................................................................................2

SAFETY INFORMATION .........................................................................................2

UNPACKING AND INSPECTION .............................................................................3

FEATURES ...............................................................................................................4

HOW THE THERMOMETERS WORK .....................................................................4

OPERATING THE THERMOMETER .........................................................................4

Temperature Measurement .............................................................................4

Locating a Hot or Cold Spot ............................................................................11

Distance and Spot Size .....................................................................................12

Field of View......................................................................................................12

Emissivity ...........................................................................................................13

Reminders .........................................................................................................13

TYPICAL MEASUREMENTS ...................................................................................15

OPERATING IR-750 SOFTWARE ............................................................................20

SPECIFICATION ......................................................................................................26

MAINTENANCE ......................................................................................................28

TROUBLE SHOOTING .............................................................................................29

BATTERY REPLACEMENT ......................................................................................29

1

SYMBOLS

Caution! Refer to the explanation in this Manual.



Warning! Laser light. Do not stare into laser beam.

Celsius.

°C

Fahrenheit.

°F

Battery indication.

Complies with European Directives.



Do not dispose of this product as unsorted municipal waste.



Contact a qualified recycler.

SAFETY INFORMATION

The instrument complies with:

EN 61010-1 General Safety

EN 60825-1 Laser Safety

EN 61326-1 Electromagnetic Emissions and Susceptibility

2

Warning

• Do not stare into laser beam.

• Do not point laser directly at eye or indirectly off reective surfaces.

• For use by competent persons only.

• Do not point laser directly at eye or indirectly off reective surfaces.

• Replace the batteries as soon as the low-battery indicator appears.

• Verify the Tester’s operation by measuring on a known voltage source. Do
not use the thermometer if it operates abnormally.

• Do not operate the thermometer around explosive gas, vapor, or dust.

• To avoid a burn hazard or re, know that reective objects may be much
hotter than the indicated temperature reading.

• Do not leave the thermometer on or near objects of high temperature.

• If the thermometer is used in a manner not specied by this manual,
the protection provided by the thermometer may be impaired or may
result in hazardous laser radiation exposure.

Cautions

To avoid damaging the thermometer under measurement, protect them
from the following:

• EMF (electro-magnetic elds) from arc welders, induction heaters

• Static electricity

• Thermal shock (caused by large or abrupt ambient temperature changes —
allow 30 minutes for instrument to stabilize before use)

• Do not leave the thermometer on or near objects of high temperature

UNPACKING AND INSPECTION

Your shipping carton should include:

1 Thermometer (IR-750)

1 USB cable

1 K-type thermocouple probe

1 Carrying bag

1 Hard carrying case

1 9V battery (installed)

1 Users manual

If any of the items are damaged or missing, return the complete package to
the place of purchase for an exchange.

3

FEATURES

The Amprobe IR-750, a precision performance 50:1 spot to distance ratio
infrared thermometer, offers unparalleled accuracy and response time with a
temperature measurement range of -58°F to 2822°F or -50°C to 1550°C. The
IR-750 is perfect for demanding quality and process control applications with
extremely high accuracy and distance to spot. The IR-750 also features 99 data
points recognition, thermocouple inputs, and USB download for advanced
HVAC/R, electrical, industrial maintenance, automotive as well as quality
control and fire prevention applications.

• 50:1 Distance to Spot Ratio

• Temp Range of 0°F to -58°F to 2822°F or -50°C to 1550°C

• Precision accuracy and rapid response time

• Laser pointer, backlit dual LCD Display

• Auto display hold and MAX/MIN memory

• Adjustable emissivity for measuring a variety of materials

• 99 memory locations and PC download cable included

HOW THE THERMOMETERS WORK

Infrared thermometers measure the surface temperature of an object. The
thermometer’s optics sense emitted, reflected, and transmitted energy, which
is collected and focused onto a detector. The unit’s electronics translate the
signal into a temperature reading which the unit displays .

OPERATING THE THERMOMETER

Temperature Measurement

The Thermometer turns on when you press the trigger
The Thermometer turns off when no activity is detected for 8 seconds.

To measure temperature, point the thermometer at an object and pull the
trigger. You can use the laser pointer to help aim the thermometer. Pull and
hold the trigger when measuring the target surface. When release the trigger,
the display will hold the reading for 8 seconds. Be sure to consider distance­to-spot size ratio and field of view. The laser is used for aiming only and is not
related to temperature measurement.

4

The thermometer features an auto off function that automatically powers
down the thermometer after 8 seconds of inactivity. To turn the thermometer
on, pull the trigger.

Rotary Switch Positions

Button Description

Press YELLOW button to toggle between MAX, MIN, DIF,

YELLOW

button

SET

AVG, HAL, LAL, DATA and T-C options.

When the Thermometer goes into sleep mode, press
MODE to turn the Thermometer ON again and it displays
the last measurement result.

Press to enter set-up mode stepping through Emissivity,
Trigger Lock and Switching °C/°F set-up.

Details refer to the below Emissivity, Trigger Lock and
°C / °F set-up.

to turn the display backlight ON or OFF.

Press
Selectable two level of display backlight to adapt
different lighting conditions.

5

Press to turn the laser light ON or OFF.

symbol on the display Indicates laser light is ON.

When the Thermometer enters the setup up mode (SET),

or to select a set-up option (Emissivity,

press

/

Trigger lock, Switching °C / °F).

When the Thermometer enters HAL, LAL and DATA mode,

or to select a set-up option (Emissivity,

press
Trigger lock, Switching °C / °F).

Laser

Cautions

To avoid injury, do not point the laser directly at eye or indirectly off
reflective surfaces.

The thermometer is equipped with a laser used for aiming purposes only.
The laser turns off when the trigger is released.

To enable or disable the laser:

1. Press

button to enable or disable the laser. Symbol appears on the

display when laser is enabled.

Emissivity set-up

1. Press SET button to select Emissivity set-up, icon is blinking on the
display

2. Press

3. Press

4. Press MODE button to complete the setting and exit Emissivity set-up, or press

Note: Default emissivity is 0.95.

to increase the value by 0.01. Press and hold for quick

setting. The maximum value is 1.00.

to decrease the value by 0.01. Press and hold for quick

setting. The minimum value is 0.01.

SET button to complete the setting and continue setting for Trigger Lock.

6

Table of Surface Emissivity

Measure Surface Switch Setting

METALS

Aluminum

Oxidized 0.2 – 0.4

Alloy A3003

Oxidized 0.3

Roughened 0.1 – 0.3

Brass

Burnished 0.3

Oxidized 0.5

Cooper

Oxidized 0.4 – 0.8

Electrical Terminal Blocks 0.6

Haynes

Alloy 0.3 – 0.8

Inconel

Oxidized 0.7 – 0.95

Sandblasted 0.3 – 0.6

Electoropolished 0.15

Iron

Oxidized 0.5 – 0.9

Rusted 0.5 – 0.7

Iron Cast

Oxidized 0.6 – 0.95

Unoxidized 0.2

Molten 0.2 – 0.3

7

Iron Wrought

Dull 0.9

Lead

Rough 0.4

Oxidized 0.2 – 0.6

Molydbenum

Oxidized 0.2 – 0.6

Nickel

Oxidized 0.2 – 0.5

Platinum

Black 0.9

Steel

Cold-Rolled 0.7 – 0.9

Ground Sheet 0.4 – 0.6

Polished Sheet 0.1

Zinc

Oxidized 0.1

Measure Surface Switch Setting

NON-METALS

Asbestos 0.95

Asphalt 0.95

Basalt 0.7

Carbon

Unoxidized 0.8 – 0.9

Graphite 0.7 – 0.8

Carborundum 0.9

8

Ceramic 0.95

Clay 0.95

Concrete 0.95

Cloth 0.95

Glass

Plate 0.85

Gravel 0.95

Gypsum 0.8 – 0.95

Ice 0.98

Limestone 0.98

Paper (any colour) 0.95

Plastic

Opaque 0.95

Soil 0.9 – 0.98

Water 0.93

Wood, (natural) 0.9 – 0.95

Trigger Lock

The thermometer trigger can be locked on for continuous measurement.
To lock the trigger:

1. Press SET button to select Trigger Lock set-up, icon
display

2. Press

3. Press YELLOW button to complete the setting and exit Trigger Lock set-up, or

or to select ON or OFF.

press SET button to complete the setting and continue setting for °C / °F.

is blinking on the

°C / °F Set-up

1. Press SET button to select °C / °F set-up, icon °C or °F is blinking on the display

2. Press

3. Press YELLOW button to complete the setting and exit °C / °F set-up.

or to select °C or °F.

9

MAX, MIN, DIF, AVG

The thermometer can measure maximum (MAX), minimum (MIN), differential
(DIF) or average (AVG) temperatures each time a reading is taken. These values
are available for infrared measurements.

1. Press YELLOW button until MIN or MAX or AVG or DIF appears on the display

2. Pull and hold the trigger while aiming at the target surface.

3. The value will show on secondary display.

High Alarm (HAL) and Low Alarm (LAL)

The thermometer has a programmable high and low alarm to designate high
or low readings depending on the thresholds entered. When the alarm level is
reached, an alarm will sound. This feature is not available when measuring by
thermocouple.

To set either the high or low alarm:

1. Press YELLOW button to select HAL or LAL option.

2. Press

3. Press SET button to complete the setting. Symbol

To turn off the high or low alarm:

1. Press YELLOW button to select HAL or LAL option.

2. Press SET button. Disappearance of Symbol

or to adjust the threshold value.

appear on the display.

indicates high or low alarm is off.

or

or

will

on the display

DATA Memory

The thermometer has 99 points data storage and the stored data can
be downloaded via IR-750 software. To save the data:

1. Press YELLOW button to select DATA option.

2. Press

3. Pull and hold the trigger while aiming at the target surface, press DATA

or to select data record number

button to save the measurement value. You can also save the measurement
value within 8 seconds of display hold after releasing the trigger.

10

K-Type Thermocouple Measurement

To avoid electrical shock or personal injury, do not connect the

thermocouple contact probe to live electrical circuits.

The thermometer comes with a bead K-type thermocouple probe.
K type thermocouple is connected to the thermometer via TC-K input
connector located on right side of the thermometer. The probe can be used
simultaneously while the thermometer is taking non-contact measurements.

1. Press YELLOW button to enter T-C mode. The display shows OL before the
measurement is made.

2. Connect the K type thermocouple to the thermometer via TC-K input
connector located on right side of the thermometer. Press the trigger to
start measuring. Secondary display shows the measurement reading.

3. Release the trigger, the reading is kept on display (display hold: 8 seconds)

Locating a Hot or Cold Spot

To find a hot or cold spot, aim the Thermometer outside the target area. Then,
slowly scan across the area with an up and down motion until you located the
hot or cold spot.

Distance and Spot Size

As the distance (D) from the target being measured increases, the spot size (S)
of the area measured by the instrument becomes larger. The spot size indicates
90% encircled energy.

11

Field of View

Make sure that the target is larger than the spot size. The smaller the target,
the closer you should be to it.

12

Emissivity

Emissivity describes the energy-emitting characteristics of materials. Most organic
materials and painted or oxidized surfaces have an emissivity of about 0.95.
If possible, to compensate for inaccurate readings that may result from
measuring shiny metal surfaces, cover the surface to be measured with
masking tape or flat black paint (<150°C / 302°F ) and use the high emissivity
setting. Allow time for the tape or paint to reach the same temperatures as the
surface beneath it. Measure the temperature of the tape or painted surface.

If you cannot use paint or use tape, then you could improve the accuracy of
your measurements with the emissivity selector. Even with emissivity selector, it
can be difficult to get a completely accurate infrared measurement of a target
with a shiny or metallic surface.

The Thermometer allows you to adjust the emissivity for the type of surface

before measured.
Refer to Table of Surface Emissivity. But it is only a typical case. You could base
on your own case and materials to have different setting.

Reminders

1. Changes of surrounding ambient temperature can result in inaccurate
reading, allow time for the instrument to adopt the change of ambient
before use. Specified accuracy applies after 30 minutes when the
instrument changes to a different environment ambient.

13

2. The instrument cannot measure through transparent surfaces such as
glass. It will measure the surface temperature of the glass instead.

3. See table of Surface Emissivity for use in measuring shiny or polished
metal surfaces (stainless steel, aluminum, etc.).

14

4. Steam, dust, smoke, etc., can prevent accurate measurement by
obstructing the instrument’s optics.

TYPICAL MEASUREMENTS

This section describes a variety of measurements often performed by technicians.

Reminder:

• User could select to turn on or off the backlight and laser whenever you

are making readings with the Thermometer.

• Relatively high emissivity normally means emissivity setting of about 0.95.

• Relatively low emissivity normally means emissivity setting of about 0.30.

• When user cannot identify the emissivity of the object to be measured,

user could cover the surface to be measured (temperature >150°C) with
black electric tape (emissivity of about 0.95). Allow time for the tape to

reach the same temperature as the object to be measured. Measure and

record the temperature of the tape.

Target the Thermometer to the object to be measured, adjust the emissivity

setting to make it as the same temperature as the tape. At this time, the

Thermometer emissivity setting is close to the emissivity of the object to be

measured, measurement could be started.

Testing Contactors (starters)

1. Press SET to select emissivity. Press / to select relatively low
emissivity for bright contacts, or 0.7 mid level for darkened contacts.

2. Press YELLOW button to select MAX.

3. Measure line and load side of one pole without releasing trigger.

4. A temperature difference between the line and load sides of a pole
indicate increased resistance of one point and a contactor may be failing.

Testing Enclosed Relays

1. Press SET and then press / to set emissivity to relatively low for
un-insulated connectors or relatively high for plastic encased relays or for
Bakelite enclosed relays or insulated connectors.

15

2. Press YELLOW button to select MAX.

3. Start to scan.

4. Measure the relay casing, looking for hot spots.

5. Measure electrical connections on relay terminals looking for hot spots.

Testing Fuses and Buss Connections

1. Press SET and then press / to set emissivity to relatively high for
paper covered fuse body or insulated connections.

2. Press YELLOW button to select MAX.

3. Scan the paper covered length of fuse.

4. Without releasing the trigger, scan each fuse. Unequal temperatures
between fuses may indicate voltage or amperage imbalance.

5. Press SET and then press / to set emissivity to relatively low, for
metal fuses and caps and insulated buss connections.

6. Press MODE to select MAX.

7. Scan each end cap on each fuse.

Note: Unequal temperatures or a high temperature indicates loose or corroded
connection through the fuse buss spring clip

Testing Electrical Connections

1. Press SET and then press / to set emissivity to relatively low for
un-insulated connectors or buss connections or relatively high for
insulated connections.

Note: Conductors are typically smaller than the Thermometer’s spot size.

If the spot size is bigger than the connector, the temperature reading is
the average within the spot.

2. Scan the conductor, moving toward direction of electrical connector
(quick connector, wire nut, buss connection, etc.).

Scanning Walls for Air Leaks or Insulation Deciencies

1. Turn off heating, cooling, and blower.

2. Press SET to select emissivity. Press
high for painted surfaces or window surfaces.

/ to select emissivity relatively

16

3. Press YELLOW button to select MIN when opposite side of wall is at lower
temperature and or select MAX when opposite side of wall is at higher
temperature.

4. Measure an interior partition wall surface temperature.

5. Do not release the trigger. Record this temperature as your baseline (or
benchmark) for a “perfectly” insulated wall.

6. Face the wall to be scanned. Stand 1.5m away to scan a 4cm spot on the wall.

7. Scan horizontal rows of wall from top to bottom, or horizontal rows
of ceiling from wall to wall. Look for greatest deviations from baseline
temperature to identify problems. This completes the insulation test scan.

Turn on the blower (no heat, no cooling) and retest. If test results with the
blower on are different than results with the blower off, this may indicate air
leaks in conditioned envelope walls. The air leaks are caused by duct leaks that
create a pressure differential across the conditioned space envelope.

Testing Bearings

Warning

To avoid injury when testing bearings:

1. Do not wear loose clothing, jewelry, or anything around neck when
working around moving parts such as motors, belts, blower, and fans.

2. Make sure an electrical disconnect is within reach and operating correctly
and freely.

3. Do not work alone.

Note: It works best to compare two similar motors operating similar loads

1. Press SET and then press

2. Press SELECT to select MAX.

3. Enable motor and allow it to reach steady state operating temperatures.

4. Disable the motor if possible.

5. Measure the two motor bearing temperatures.

6. Compare the two motor bearing temperatures. Unequal temperatures or
a high temperature can indicate a lubrication or other bearing problem
that is resulting from excess friction.

7. Repeat the sequence for the blower bearings.

/ to select relatively high emissivity.

17

Testing Belts and Sheaves

1. Press SET and then press / to select relatively high emissivity.

2. Press SELECT to select MAX.

3. Enable the motor and allow it to reach a steady state operating
temperatures.

4. Aim the Thermometer at the surface to be measured.

5. Start recording temperature.

6. Slowly move the Thermometer up the belt toward second sheave.

• If belt is slipping, sheave temperature will be high from friction.

• If belt is slipping, belt temperature will remain high between sheaves.

• If belt is not slipping, belt temperature will reduce between sheaves.

• If inner surfaces of sheaves are not a true “V” shape, this indicates

belt slippage and will continue to operate at elevated temperatures
until sheave is replaced.

• Sheaves must be properly aligned (include “pitch & yaw”) for belt

and sheaves to operate at appropriate temperatures. A straight edge
or taut string, can be used to check alignments.

• Motor sheave should operate at a temperature consistent with

blower sheaves.

• If motor sheave is at a higher temperature at motor shaft than at

outer circumference, belt is probably not slipping.

• If outer circumference of sheave is at higher temperature than sheave at

motor shaft, then belt is probably slipping and sheaves may be misaligned.

Checking Hydronic Radiant Heat Applications

1. Press SET and then press / to select relatively high emissivity.

2. Press YELLOW button to select MAX.

3. To locate radiant heat tubes in floor, temporarily elevate the loop
temperature to create hotter spots for identifying tubing runs.

4. Before releasing trigger, press YELLOW button to toggle between MIN,
MAX, DIF floor temperatures and record the temperature for future
comparison and trending under similar conditions.

18

Measuring Grille, Register, or Diffuser Discharge Temperature

1. Press SET and then press / to select relatively high emissivity.

2. Aim the Thermometer at the discharge air grille, register, or diffuser.

3. Measure discharge temperature.

4. Release trigger to freeze the temperature reading for 8 seconds and
record this temperature.

5. Grille, register, or diffuser temperature should be equivalent to discharge
temperature at the air handler.

Checking for Blockage in Air-To-Air Evaporator or Condensers

1. Remove panels to gain access to coil return bends or hairpins.

2. Press SET and then press
copper tube.

3. Start the refrigeration system.

4. Aim the Thermometer at coil turn bends/hairpins.

5. Start recording temperature.

6. Take temperature of each return bend/hairpin.

• All evaporator return bends/hairpins should be at or slightly above

evaporator saturation temperature from the pressure/temperature chart.

• All condenser return bend/hairpins should be at or slightly less than

condenser saturation temperature.

• If a group of return bends/hairpins do not conform to expected

temperatures, that indicates a blocked or restricted distributor or
distributor tube.

/ to select relatively high emissivity for

19

OPERATING IR-750 SOFTWARE

System Prerequisites

Recommended conguration

Processor

Operating system Microsoft Windows® 2000 / XP / Vista / Win7

Memory 512 MB RAM or higher

Monitor VGA (1024 x 768)

Drive CD-ROM

Input device Mouse or compatible

Interface USB for data transmission

Pentium® 4 or higher with support of all customary
operating systems

Install IR-750 Software

• Insert the provided CD disk into CD-ROM drive.

• Double-click “IR-750_VX.XX.exe” (X can be 0 to 9 or blank,

indicating the software version)

• The pop-up windows will guide you through the program setup process.

Connecting USB cable to IR-750 Thermometer

20

Main Screen

1

2
3

4

5

command enables you to create New, Save file and Set the

1

numbers of measurement (1000, 5000, 10000, 50000, 100000 or limitless).

command enables you to view the software operation instructions.

2

Blinking indicates IR-750 is connected to the software

3

Main display screen of measurement

4

Secondary display screen for measurement data

5

Measurement data in graph

6

Using Program

button enables you to connect to IR-750 thermometer and

start measurement. Click “USB Connect”
Thermometer is successfully connected to the PC and IR-750 Thermometer
will automatocally start taking measurements. Primary display screen shows
current measurement temperatures,secondary display screen shows all
measurement data.

and is blinking indicates IR-750

6

21

Download Data enables you to download data saved in IR-750 Thermometer.
Tick “Download Data” and click “USB Connect”, the saved data will
automatically upload to PC and display on secondary display.

Exit and close the program

1

2

3

4

1

Print data

2

Save data (*.txt, *.xls, *.xml)

3

Open files (*.txt, *.xls, *.xml)

Deleting current data and create a new data.

4

Repeat: Tick to display every measurement with the interval you set. Un-tick
“Repeat”, the secondary display screen will only show measurement result
that is different from the last measured temperature. The graph display will
show complete measurement result in graphics despite “Repeat” is ticked or
un-ticked.

Sampling Interval allows you to set the sampling intervals of measurement ( 1
to 9999 seconds).

Note: when measurement data reaching to 10000 sets (measurement No.),
a warning message will pop up and stop measurements. Save or clear the
measurement data before continuing next measurements.

22

1

Last page

2

Next page

3

Current page

4

Previous page

5

First page

6

Save graph in current page as *.bmp

7

Set numbers of measurement data on graph display

1

2

3

4

5

6

7

Test Report

Test data can be saved as *.txt, *.xls, *.xml by clicking button. When
opening data report, make sure selecting Font format as Amprobe-A1 or
Amprobe-A2 in “Unit” column in order to display correct temperature unit °C
or °F.

23

24

Zoom In Selected Graph

To enlarge the particular part of the graph, use the mouse pointer to select area
from upper-left point to lower-right point.

You can use button to save the selected enlarged graph.

To resume to its original full view, use the mouse pointer to select any area on
the graph from lower-right point to upper-left point.

25

26

SPECIFICATION

Feature IR-750

Temperature Range -50°C to 1550°C (-58°F to 2822°F)

Accuracy (Assumes
ambient operating
temperature of
23°C to 25°C (73°F
to 77°F)

Repeatability ±0.5% of reading or ±0.5°C (±1°F), whichever is

Display Resolution 0.1°C / 0.1°F of reading < 999.9

Spectral Response 8µm to14µm

Laser Sighting Single point laser

Laser Power Output > 1mW Class 2, wavelength 630 to 670nm

Response Time
(95%)

Distance to Spot
(D:S)

Minimum Spot Size 19mm

Emissivity Digitally adjustable from 0.10 to 1.00 by 0.01.

Ambient Operating
Temperature

Relative Humidity 0% to 75% non-condensing

Storage
Temperature

Temperature
Display

>0°C to 1550°C (>32°F to 2822°F): ±1.8% or ±1.8°C
(±4°F), whichever is greater
>-35°C to 0°C (-31°F to 32°F): ±1.8%+1°C (2°F) or
±2.8°C (±6°F), whichever is greater

-50°C to -35°C (-58°F to -31°F): not specified (for
reference only)

greater

0.2°C / 0.2°F of reading below 10°C (50°F)
1°C / 1°F of reading > 999.9

250ms

50:1

Pre-set emissivity is 0.95

0°C to 50°C
32°F to 120°F

-20°C to 65°C

-4°F to 150°F
(Battery not installed)

°C or °F selectable

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Display Hold 8 sec

MAX/MIN
Temperature
Display

DIF/AVG
Temperature
Display

USB interface √

Data storage 99

Programmable high
and low alarm

K-Type
thermocouple
measurement

Dual LCD Display √

LCD Backlit √

Low Battery
Indication

Tripod mount √

Power 9V 6F22 alkaline battery or by Amprobe EPS-700-US (US

Battery Life

Dimension (H x L x W) Approx.183 x 147 x 57 mm (7.2 x 5.8 x 2.3 in)

Weight Approx.345 g (0.76 lb) with battery installed

Optional accessory Power adaptor EPS-700-US (US plug), EPS-700-EUR

plug) or EPS-700-EUR (European plug) power adaptor

10 hours with laser and backlight on
30 hours with laser and backlight off

(European plug)

√

√

√

√

√

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MAINTENANCE

Lens Cleaning: Blow off loose particles using clean compressed air. Gently
brush remaining debris away with a camel’s hair brush. Carefully wipe the
surface with a moist cotton swab. The swab may be moistened with water or
rubbing alcohol.
NOTE: DO NOT use solvents to clean the plastic lens.
Case Cleaning: Use soap and water on a damp sponge or soft cloth.

Caution!

Do not submerge the unit in water.

TROUBLE SHOOTING

Code Problem Action

OL

-OL

Target temperature is
over range

Target temperature is
under range

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Select target within
specifications

Select target within
specifications

Battery indication

Blank display Possible dead battery

Laser does not work

Beeper beeps

continuously

Low battery

1.Low or dead battery

2.Ambient temperature
above 40°C (104°F)

Check if high/low alarm
has been set?
And measurement value
has over the limit?

Check and/or replace
battery

Check and/or replace
battery

1.Replace battery

2.Use in area with lower
ambient temperature

Re-set high/low alarm
setting or cancel the
limit setting

BATTERY REPLACEMENT

To install or change one 9V battery (see below):

1. Push the button and pull the handle downward to open battery cover.

2. Install the battery noting its correct polarity.

3. Re-install the battery cover.

Battery: 9V 6F22 alkaline battery or equivalent

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