Omega OS523E, OS53xE-CF, OS532E, OS524E, OS533E User Manual

OS530LE, OS532E, OS53xE-CF,

OS533E, OS534E, OS530HRE,

OS523E, OS524E OMEGASCOPE

®

Handheld Infrared Thermometer

Shown with
Built-in Distance
Measuring Option
and Digital Video
Camera Attachment

TM

omega.com

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For latest product manuals:

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User’s Guide

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®

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Unpacking Instructions

n4

Notes

Unpacking Instructions

Remove the Packing List and verify that you have received all
equipment, including the following (quantities in parentheses):

• OS530/OS520 Series Handheld Infrared Thermometer (1)

• AA Size Lithium Batteries (4)

• Soft Cover Carrying Case (1)

• Analog Cable (1)

• RS232 Cable (only for OS533E, OS534E, OS523E, OS524E)

• CD Software (only for OS533E, OS534E, OS523E, OS524E)

• Quick Start Manual (1)

Accessories

If you have any questions about the shipment, please call Customer
Service at:

1-800-622-2378 or 203-359-1660. We can also be reached on the
Internet at:

omega.com
e-mail: [e-mail]

When you receive the shipment, inspect the container and equipment
for signs of damage. Note any evidence of rough handling in transit.
Immediately report any damage to the shipping agent.

The carrier will not honor damage claims unless all shipping
material is saved for inspection. After examining and removing
contents, save packing material and carton in the event
reshipment is necessary.

Model No. Description

UNI-ADAP-9V 100-240 Vac adapter, 9 Vdc @1.7A
OS520-RCC Hard Carrying Case, Standard
OS520-SC-RCC Hard Carrying Case, Large
88013K Surface Probe, K Type T/C, up to 815°C (1500°F)
88001K Surface Probe, K Type T/C, up to 482°C (900°F)
CAL-3-IR NIST Traceable Calibration
SC-520 Sighting Scope
HH-DM Distance Measuring Meter
DV-CAM Digital/Video Camera

NOTE

i

ii

TABLE OF

CONTENTS

Page

Unpacking Instructions i
Chapter 1 General Description 1-1

1.1 Introduction 1-1

1.2 Parts of the Thermometer 1-5

1.2.1 Front of the Thermometer 1-5

1.2.2 Rear of the Thermometer 1-7

Chapter 2 Using the Handheld Infrared Thermometer 2-1

2.1 How to Power the Thermometer 2-1

2.1.1 Battery Operation 2-1

2.1.2 AC Power Operation 2-1

2.2 Operating the Thermometer 2-2

2.2.1 Measurement Techniques 2-6

2.3 Real Time Mode (Active Operation) 2-8

2.3.1 Adjusting Emissivity 2-11

2.3.2 Using the LOCK Function 2-11

2.3.3 Using the Trigger Function 2-11

2.3.4 Using the Distance Function 2-12

2.3.5 Laser Sighting Status 2-15

2.3.6 Calculating Temperature Values 2-15

2.3.7 Changing the Temperature from °F to °C (or vice versa) 2-16

2.3.8 Turning on the Display Backlighting 2-16

2.3.9 Thermocouple Input (OS532E, OS533E, OS534E) 2-16

2.3.10 Using the Alarm Functions 2-17

2.3.11 Using Ambient Target Temperature Compensation 2-19
(OS533E, OS534E, OS523E, OS524E)

2.3.12 PC Interface Software (OS533E, OS534E, OS523E, OS524E) 2-20

2.3.13 PC Interface Commands 2-25

2.3.14 Storing Temperature Data on Command 2-27
(OS533E, OS534E, OS523E, OS524E)

2.3.15 Logging Temperature Data in Real Time 2-28
(OS533E, OS534E, OS523E, OS524E)

2.3.16 Erasing the Temperature Data from Memory 2-29

2.4 Recall Mode (Passive Operation) 2-30

2.4.1 Reviewing the Last Parameters 2-32

2.4.2 Reviewing Previously Stored Temperature Data 2-32
(OS534E, OS523E, OS524E)

Chapter 3 Laser Sighting 3-1

3.1 Warnings and Cautions 3-1

3.2 Description 3-2

3.3 Operating the Laser Sighting 3-3

3.4 Laser Sighting Status 3-3

Chapter 4 Sighting Scope 4-1

4.2 Installing and Operating the Sighting Scope 4-1

OS530E/OS520E Series

Handheld Infrared Thermometer

iii

iv

Chapter 5 Digital Video Camera 5-1

5.1 Camera Parts 5-1

5.2 Battery Installation 5-1

5.3 Turning Camera ON/OFF 5-1

5.4 Menu Selection 5-1

Chapter 6 Maintenance 6-1

6.1 Replacing the Batteries 6-1

6.2 Cleaning the Lens 6-2

6.3 Calibrating the Thermometer 6-2

6.4 Servicing the Laser Sighting 6-2

Chapter 7 Troubleshooting Guide 7-1
Chapter 8 Specifications 8-1
Chapter 9 Glossary of Key Strokes 9-1

Appendix A How Infrared Thermometry Works A-1
Appendix B Emissivity Values B-1
Appendix C Determining an Unknown Emissivity C-1
Index I-1

TABLE OF

CONTENTS

1-1

General Description

1

1.1 Introduction

The OS530E/OS520E series Handheld Infrared (IR) Thermometers
provide non-contact temperature measurements up to 4500°F. They
offer effective solutions for many non-contact temperature
applications, including the following:

• Predictive Maintenance: Tracking temperature shifts which
indicate pending failure in solenoid valves.

• Energy Auditing: Locating wall insulation voids to reduce
building heating costs.

• Food Processing: Taking accurate temperature readings without
direct contact with the food or packaging material.

The IR thermometer provides information at a glance — the custom
backlit dual digital LCD displays both current and minimum,
maximum, average or differential temperatures. This versatile
instrument provides:

• Measurable target distances from 5 inches to approximately 100
feet

• Emissivity adjustable from 0.1 to 1.00 in 0.01 steps provides ease
of use when measuring a variety of surfaces.

• Built-in Laser sighting in Circle & Dot configurations.

• Thermocouple input available.

• Distance Measurement available, either field mountable or built­in.

• Digital/Video Camera Option available

• An electronic trigger lock feature set via the keypad allows
continuous temperature measurement up to 10 times per second.

• Audible and visual alarms. The high and low alarm points
are set via the keypad.

• 1 mV per degree (°F or °C) analog output, which allows
interfacing with data acquisition equipment (including
chart recorders, dataloggers and computers). OS524E provides 0.5
mV/Deg.

• Last temperature recall (Hold).

• Backlit display useful in low ambient light conditions.

• Powers from 4 AA size batteries or an ac adapter.

• RS232 serial communication to a PC or printer. This allows
downloading data for further analysis.

• Ambient target temperature compensation. This provides more
accuracy for measuring low emissivity targets.

• Record up to 800 temperature data points. Review the recorded
data on the thermometer LCD, as well as downloading the data
to a PC.

General Description

1

1-2

The thermometer is easy to use:

• Units have standard “V” groove aiming sights.

• Integral tripod mount permits hands-free operation, if necessary.

• Temperature readings are switchable from °F to °C via the keypad.

• Parameters, such as target material emissivity and alarm setpoints, can
be set and remain in memory until reset.

This instrument has a rugged and functional design, including:

• Sealed keypad display.

• Convenient trigger operation.

• Soft carrying case and wrist strap, for safety and ease of carrying.

• Rubber boot around the lens and the display.

Table 1-1. OS530 Series Handheld Infrared Thermometer Features

Features

OS530LE OS532E OS533E OS534E

Accuracy* ±1% rdg ±1% rdg ±1% rdg ±1% rdg
Range -10 to 1000°F -10 to 1000°F -10 to 1000°F -10 to 1600°F

-23 to 538°C -23 to 538°C -23 to 538°C -23 to 871°C
Emissivity adjustable adjustable adjustable adjustable
Backlit Dual Display standard standard standard standard
Distance to Spot

Size Ratio 10:1 10:1 20:1 30:1
Differential Temperature standard standard standard standard
Min/Max Temperature standard standard standard standard
Average Temperature standard standard standard standard
High Alarm standard standard standard standard
Thermocouple Input — standard standard standard
Audible Alarm

& Indicator standard standard standard standard
Analog Output 1mV/deg 1mV/deg 1mV/deg 1mV/deg
Built-in Laser Sighting dot/circle dot/circle dot/circle dot/circle
Trigger Lock standard standard standard standard
Last Temperature Recall standard standard standard standard
Low Alarm — — standard standard
Ambient Target

Temperature — — standard standard

Compensation

RS232 Interface — — standard standard
Data Storage — — — standard
Distance Measurement Optional
Digital Camera Optional

1-3

General Description

1

Features

OS530HRE OS530LE-CF OS533E-CF OS534E-CF

Accuracy* 3°F (1.7 °C) ±1% rdg ±1% rdg ±1% rdg
Range -22 to 250°F -10 to 1000°F -10 to 1000°F -10 to 1600°F

-30 to 121°C -23 to 538°C -23 to 538°C -23 to 871°C
Emissivity Adjustable Adjustable Adjustable Adjustable
Display Resolution 0.1°For 0.1°C 1°F or 1°C 1°F or 1°C 1°F or 1°C
Backlit Dual std std std std

Display
Field of view 20:1 0.15"@6" 0.15"@6" 0.15"@6"
Differential

Temperature std std std std
Min/Max

Temperature std std std std
Average

Temperature std std std std
High Alarm std std std std
Low Alarm --- --- std std
Audible Buzzer

& Indicator

std std std std

Ambient Target
Temp --- --- std std

Compensation

Analog Output 1 mV/Deg 1 mV/Deg 1 mV/Deg 1 mV/Deg
RS232 Output --- --- std std
Data Storage --- --- --- std
Built-in Laser Dot/Circle Dot Dot Dot

sighting
Trigger Lockstd std std std std
Last Temperature

Recall std std std std
Thermocouple

Input --- --- std std
Distance Optional Not Recommended

Measurement
Digital Optional

Camera

* The temperature accuracy is 1% of Rdg or 2ºC (3ºF) whichever is greater.

General Description

1

1-4

Distance to Spot Size Ratio

OS523E-1 30:1
OS523E-2 60:1
OS523E-3 68:1

** OS523E provides three field of views:

Features OS523E

**

OS524E

Accuracy ±1% rdg ±1% rdg
Range 0 to 2500°F 1000 to 4500°F

(-18 to 1371°C) (538 to 2482°C)
Emissivity adjustable adjustable
Backlit Dual Display standard standard
Distance to Spot Size Ratio varies** 110:1
Differential Temperature standard standard
Min/Max Temperature standard standard
Average Temperature standard standard
High Alarm standard standard
Low Alarm standard standard
Audible Alarm & Indicator standard standard
Ambient Target

standard standard

Temperature Compensation
Analog Output 1 mV/deg 0.5 mV/deg
RS-232 Output standard standard
Thermocouple Input ––– –––
Data Storage standard standard
Built-in Laser Sighting dot/circle dot/circle
Trigger Lock standard standard
Last Temperature Recall standard standard
Distance Measurement Optional
Digital Camera Optional

1.2 Parts of the Thermometer

1.2.1 Front of the Thermometer

Figure 1-1. OS530E/OS520E Series Handheld Infrared Thermometer Front View

The display is shown in more detail in Figure 1-2 and described in Table 1-2.

There are no user-serviceable parts in the thermometer.

Refer to Chapter 3 for Laser Sight information.

“V” Groove

Lens Rubber

Boot

Built-in

Distance Module

(Optional)

Distance

Powe r
Switch

Trigger

Battery

Compartment

Door

Tripod
Mount

Digital/Video
Camera
(Optional)

Display
Rubber
Boot

Backlit
LCD

Wrist
Strap

1-5

General Description

1

General Description

1

1-6

Figure 1-2.

Display and

Keypad View

Table 1-2. Display Details

Key Description

➀

Display Mode displays one of the following:

E (Emissivity) AVG (Average Temperature)
d_F (distance in Feet) HAL (High Alarm Setpoint)

d_M (Distance in Meters) TC (Thermocouple Input)

LSR (Laser either flashing or continuous) LAL (Low Alarm Setpoint)
MAX (Maximum Temperature) AMB (Ambient Target Temp)
MIN (Minimum Temperature) PRN (Send Data to PC)
dIF (Differential Temperature) MEM (Store Individual Temperature Data)
LOG (Log Temperature Data)

➁

Data associated with one of the Display Modes

➂

Backlighting Icon - allows the display to be viewed under low ambient light

➃

Displays the units of measure in either °F or °C

➄

Main display - displays the current temperature

➅

Locks the trigger / Enables or Disables alarms/Resets MAX, MIN, Dif, Avg. Temps

➆

for incrementing data; and is for turning on/off the display backlighting

➇

for decrementing data; and is for changing the units of measure from °F to °C or vice

versa

➈

Function key for scrolling through the display modes

➉

Display Icons

Trigger Lock Low Alarm

Ambient Target Low Battery

High Alarm Data Transfer thru

RS232

Laser Power Indicator LED

F

C

FUNC LOCK

®

F

C

OMEGASCOPE

®

LCK

HAL

LOBAT

ATC

LAL

PRN

°F °C

1

11

10

9

8

7

6

5

4

3

2

1-7

General Description

1

Figure 1-3 shows the various jacks for analog output, thermocouple input
and the ac adapter to the thermometer. The figures also show the location of
the Laser Power Switch, Dot-Circle Switch, and Laser Beam Aperture. More
details are provided in Section 2.2.1.

Figure 1-3. OS530E/OS520E Series Handheld Infrared Thermometer

Various Views

Laser

Dot/Circle

Switch

Laser
Power
Switch

Distance

Power

Switch

Laser Beam
Aperture

Thermocouple Input
Socket (SMP)
(standard on OS532E,
OS533E, OS534E)

ac Adapter Input Jack

Analog Output Jack (1mV/deg)

RS-232 Phone Jack
(standard on OS533E,
OS534E, OS523E, OS524E)

General Description

1

1-8

Notes

2-1

Using the Handheld Infrared Thermometer

2

2.1 How to Power the Thermometer

2.1.1 Battery Operation

Invert the thermometer and install 4 fresh AA size batteries as shown in
Figure 2-1. Make sure the batteries’ polarities are correct, the batteries are
not put in backwards, and are of the same type.

If the icon flashes, the batteries must be
replaced with fresh batteries immediately.

Figure 2-1. Installing the Batteries

2.1.2 ac Power Operation

The thermometer may be operated on ac power using the optional
universal 100/240 Vac adapter. When operating on ac power the batteries
supply backup power in case of ac power failure. The ac adapter input jack
is shown in Figure 1-3.

NOTE

C

F

FU

NC LOC

K

®

A
TC

LC

LAL

K

H

PR

A

L

N

°

L

F

O

°

B

C

A

T

OME

G

A

S

COPE

®

Using the Handheld Infrared Thermometer

2

2-2

2.2 Operating the Thermometer

1a. (Without the Laser Sighting) -Aim the thermometer at the target to

be measured. Use the “V” groove (shown in Figure 1-1) on top of
the thermometer to align the target to the thermometer’s field of
view. Look down the “V” groove with one eye only, in order to
guarantee proper sighting. Pull and hold the trigger.

1b. (With the Laser Sighting) - Set the laser power switch to the

ON position. Aim at the target and pull the trigger. The laser
beam and the red power indicator LED will turn on while the
trigger is pulled. Refer to Chapter 3 for more details on the Laser
Sighting.

2. The field of view of the thermometer should fall within the area
of the target being measured as shown in Figure 2-2. Figures 2-3
through 2-9 show the field of view vs distance for the various
thermometers.

Figure 2-2. Field of View Positions

Figure 2-3. Field of View OS532E, OS530LE

SPOT DIA. * (IN)

SPOT DIA. * (CM)

Field of View

Target

(ACCEPTABLE)

(UNACCEPTABLE)

2-3

Using the Handheld Infrared Thermometer

2

** Measurement distance is from the outside surface of the rubber boot.

4.8"

1.0" @ 0" to 20"

2.5cm @ 51cm

1.2"

1.0"

2.5

6.0

4.0

8.0

10.0

12.2

1601208040

1.0"

1.8"

2.4"

3.0"

3.6"

4.2"

1' 2'

200

8'6'

0**

DISTANCE: SENSOR TO OBJECT (FT)

DISTANCE: SENSOR TO OBJECT (CM)

SPOT DIA.* (IN)SPOT DIA.* (CM)

*SPOT DIAMETER MEASURED

AT 90% ENERGY

D:S = 20:1

4'

244

3' 5' 7'

20"

Figure 2-5 Field of View OS534E, OS523E-1

Figure 2-4 Field of View OS533E, OS530HRE

Using the Handheld Infrared Thermometer

2

2-4

Figure 2-7 Field of View OS523E-2

Figure 2-6 Field of View OS53xE-CF

DISTANCE: SENSOR LENS TO OBJECT (in.)

0

3"

6"

9"12"

15"

SPOT DIA.* (IN)

0.9"

22

0

SPOT DIA.* (MM)

.45"

11.5

*SPOT DIAMETER MEASURED

AT 90% ENERGY

7.6

0'

0.9"@ 0

SPOT DIA.* (IN)

0.9"

30.5

.78"

D:S = 40:1

19.9

38.1

1.9"

.15"

3.9

15.2

DISTANCE: SENSOR LENS TO OBJECT (cm.)

DISTANCE: SENSOR TO OBJECT (FT)

3'

1.0"

.39"

9.9

22.9

5'

1.2"

1.17"

29.9

16'10'

2.9"

26

22mm @ 0

*SPOT DIAMETER MEASURED

AT 90% ENERGY

0

SPOT DIA.* (MM)

1.0 3.01.5

31

DISTANCE: SENSOR TO OBJECT (M)

D:S = 60:1

48

75

5.0

2-5

Using the Handheld Infrared Thermometer

2

Figure 2-8 Field of View OS523E-3

Figure 2-9 Field of View OS524E

DISTANCE: SENSOR TO OBJECT (FT)

0’

3’

16’10’2’ 5’

SPOT DIA.* (IN)

SPOT DIA.* (MM)

.35"@ 24"

.8"

21

9mm @ 610mm

*SPOT DIAMETER MEASURED

0

.9"

AT 90% ENERGY

.61

1.0

DISTANCE: SENSOR TO OBJECT (M)

1.6"

22

42

1.5

DISTANCE: SENSOR TO OBJECT (FT)

0' 16' 82'50'

0.5"@ 0

SPOT DIA.* (IN)

0.9"

1.5"

5.1"

4.0"

101

3.0

7.0"

181

5.0

8.7"

38

13mm @ 0

*SPOT DIAMETER MEASURED

AT 90% ENERGY

0

SPOT DIA.* (MM)

5 15

DISTANCE: SENSOR TO OBJECT (M)

130

D:S = 110:1

221

25

Using the Handheld Infrared Thermometer

2

2-6

3. The target temperature and emissivity are displayed on the LCD.

Determine the emissivity of the target (refer to Appendix B). Press the

key to increment the target emissivity. Press the key to

decrement the target emissivity.

4. Press the key to lock the trigger. The icon will appear

on the display. This allows the thermometer to operate continuously
whether or not the trigger is pulled. To unlock the trigger, press the

key again or pull the trigger twice. The icon is no longer
displayed. When the trigger is pulled, the Laser Sighting as well as the
display backlight will stay on .

5. After completing a temperature measurement, release the trigger.
In order to conserve battery life, the thermometer goes into sleep
mode and the Laser Sighting turns off.

LOCK

LOCK

F

C

2.2.1 Measurement Techniques

You can use the IR Thermometer to collect temperature data in any
one of five different ways:

• Spot Measurement — Measures the temperature of discrete objects

such as motor bearings, engine exhaust manifolds, etc.:

1. Aim at the desired target and pull the trigger.

2. If necessary, adjust the emissivity using the and
keys.

3. Read the temperature.

• Differential Measurement — Measures the temperature differential
between two spots (the maximum and minimum temperatures
viewed)

1. Aim the thermometer at the first spot and pull the trigger. Press
the key to lock the trigger.

2. If necessary, adjust the emissivity.

3. Aim at the second spot.

4. Adjust the emissivity of the second spot if required.

5. To display the differential temperature, press the key until
“dIF” appears on the display.

6. Read the differential temperature from the upper display.

7. Press the key to unlock the trigger.

LOCK

FUNC

LOCK

F

C

2-7

Using the Handheld Infrared Thermometer

2

• Static Surface Scan – Measures the temperature across a static
surface:

1. Aim the thermometer at a starting point and pull the trigger.
Press the key to lock the trigger.

2. If necessary, adjust the emissivity.

3. Slowly move the thermometer so that the line of sight sweeps
across the surface. The thermometer measures the temperature
at each point on the surface.

4. To record the temperature profile across the surface, connect
the IR thermometer to a strip chart recorder. Refer to Figure
2-11 for details. The IR thermometer provides an analog output
of 1mV/degree. (0.5 mV/Deg on OS524E)

5. After all the data has been taken, press the key to unlock
the trigger.

Figure 2-11 Recorder Hookup

• Moving Surface Scan - Measures the Temperature of Points on a

Moving Surface:

1. Mount the thermometer on a camera tripod and aim at a fixed
point on the moving surface.

2. Pull the trigger and press the key to lock the trigger.

3. If necessary, adjust the emissivity. The thermometer is now set
up for measuring the temperature of a moving surface.

4. To record the temperature profile of the moving surface,
connect the IR thermometer to a strip chart recorder. Refer to
Figure 2-11 for details.

5. After all data is taken, press the key to unlock the trigger.

• Fixed Point Monitoring Over Time - Monitors the temperature at
a fixed point over time:

It is recommended that you use the ac adapter for long
term measurement of temperature.

LOCK

LOCK

LOCK

LOCK

NOTE

NOTE
Center hole is the
analog output jack

Analog

Cable

To Strip Chart

Recorder

Using the Handheld Infrared Thermometer

2

2-8

1. Mount the thermometer on a camera tripod and aim at the
target.

2. Connect the analog output of the thermometer to a strip chart
recorder as shown in Figure 2-11.

3. Pull the trigger and press the key to lock the trigger.

4. If necessary, adjust the emissivity.

5. The thermometer is now set up for unattended monitoring of
temperature over time. You can also download the temperature
to a Serial Printer or a PC for further analysis (Models OS533E,
OS534E, OS523E, OS524E).

6. After all data is taken, press the key to unlock the trigger.

2.3 Real Time Mode (Active Operation)

Definition: Real Time Mode is the active operational mode of the
thermometer. In this mode, the thermometer constantly measures
and displays temperature.

Figure 2-12. General Operational Block Diagram

LOCK

LOCK

FUNC

2-9

Using the Handheld Infrared Thermometer

2

Table 2-1. Functional Flow Chart when the Trigger is Pulled (Real Time Mode)

Press to... to...

Press or to...

FUNC

LOCK

F

C

F

C

DISPLAY

MODE:

Press

Display shows:

Emissivity

Go to

Set Emissivity

Current temperature Lock or unlock

Distance (feet or meter)

Go to

Trigger LCK

Current temperature

Laser status

Go to

Set laser to

Current temperature Flashing or On

Maximum temperature

Go to

Press to turn on/off

Current temperature LCD backlight

Minimum temperature

Go to

Current temperature Reset Maximum, Press to change

Differential temp

Go to

Minimum, Diff.

from °F to °C or feet to meter

Current temperature

Average temps and vise versa

Average temperature

Go to

Current temperature

High alarm set point

Go to

Enable/Disable

Set High Alarm set point

Current temperature HAL

Thermocouple temp

Go to

–––––– Turn on LCD Back lite

Current temperature Change °F to °C

Low alarm set point

Go to

Enable/Disable

Set Low Alarm set point

Current temperature LAL

Ambient target temp

Go to

Enable/Disable

Set Ambient Target temp

Current temperature ATC

Data Trans. Interval

Go to

Enable/Disable

Set Data Transmission

Current Temperature PRN interval (Logging)

Memory location

Go to Store temp data –––

Current temperature

Logging

Go to

Turn on/off

–––

Current temperature Logging

Real Time Modes

NOTE: The unit of measure (°F or °C) flashes during Real Time Mode.

OS530LE, OS530HRE

OS532E

OS533E

OS534E, OS523E, OS524E

Figure 2-13. Visual Function Flow Chart

* While in these 7 modes:

Use key to change temperature from °F to °C or vice versa.

Use key to turn on the display backlighting.

*

*

*

*

*

*

*

Using the Handheld Infrared Thermometer

2

2-10

MODE MODEDISPLAY DISPLAY

LCK

LCK

FUNC

☞

LCK

LCK

HAL

FUNC

☞

LCK

(Models OS530LE,

OS530HRE)

FUNC

☞

LCK

☞

LCK

☞

LCK

FUNC

FUNC

FUNC

☞

LCK

LCK

☞

LCK

ATC

☞

LCK

☞

LAL

☞

FUNC

(Model OS532E)

FUNC

FUNC

PRN

FUNC

(Model OS533E)

☞

FUNC

LCK

LCK

FUNC

☞

FUNC

☞

(Models

on

LCK

FUNC

☞

OS534E,
OS523E,
OS524E)

F

C

2-11

Using the Handheld Infrared Thermometer

2

2.3.1 Adjusting Emissivity

Refer to Appendices B and C for information on emissivity.

1. Determine the emissivity of the target.

2. Aim at the target and pull the trigger.

3. If necessary, press the key to increment the target emissivity
or press the key to decrement the target emissivity.

The Emissivity Display Mode (E) appears every time the
trigger is pulled regardless of how the Display Mode was
previously set.

The emissivity setting does not change when the
thermometer is turned off. However, when the batteries are
replaced, the emissivity is reset to 0.95, the default value.

2.3.2 Using the LOCK Function

This function electronically locks the trigger mechanism:

1. Pull the trigger and press the key to lock the trigger in the Emissivity
and Distance Display Mode. The icon will appear on the display.

2. Release the trigger. This allows the thermometer to operate
continuously whether or not the trigger is pulled.

To unlock the trigger function, while in Emissivity and

Distance Display Modes press the key again, and

the icon is no longer displayed.

The key also enables/disables alarm functions, and resets
calculated temperature values (MAX, MIN, dIF, AVG).

2.3.3 Using the Trigger Function

Besides turning on the thermometer by pulling the trigger, you can
lock the trigger electronically by pressing the trigger button twice.
The

icon is displayed. You can unlock the trigger by pressing the

trigger button twice again.

NOTE

NOTE

NOTE

°F

F

C

LOCK

LOCK

LOCK