Omega OMEGASCOPE OS520 User manual

OS520, OS520E, OS521,
OS522, OS523, OS524
OMEGASCOPE®
Handheld Infrared Thermometer
http://www.omega.com
e-mail: [email protected]
omega.com
®
OMEGA
®
ser’s Guide
Shown with
Built-in Laser Sighting
ISO 9001
CERTIFIED
CORPORATE QUALITY
STAMFORD, CT
ISO9002
CERTIFIED
CORPORATE QUALITY
MANCHESTER, UK

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Tel: [phone] FAX: [phone]
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apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directi es. OMEGA will add the CE mark to e ery appropriate de ice upon certification.
The information contained in this document is belie ed to be correct but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reser es the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient connected applications.

NOTE
i
npacking Instructions
Remove the Packing List and verify that you have received all equipment, including
the following (quantities in parentheses):
OS520 Series Handheld Infrared Thermometer (1)
AA Size Lithium Batteries (4)
Soft Cover Carrying Case (1)
Analog Cable (1)
RS-2 2 Cable (only for OS521 through OS524) (1)
.5” Floppy Disk (only for OS521 through OS524) (1)
Quick Start Manual (1)
User’s Guide (1)
Optional Accessories: Laser Sight Module
Thermometer Laser Sight Module Sighting
Model No. Model No. Scope
Single Dot Circle
OS520, 520 LS-120 LS-720 SC-520
OS521 LS-120 LS-721 SC-520
OS522 LS-120 LS-722 SC-520
OS523-1 LS-120 LS-722 SC-520
OS523-2 LS-120 LS-723-2 SC-520
OS523-3 LS-120 - SC-520
OS524 LS-120 LS-724 SC-520
ac Adapter
Part Numbers: OS520-ADAPTER-110V for 110 Vac adapter
OS520-ADAPTER-220V for 220 Vac adapter
Hard Carrying Case
Part Number: OS520-RCC
OS520-SC-RCC (Accommodates sighting scope)
If you have any questions about the shipment, please call the Customer Service Department.
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.
From the Technical Library of ____________________________________

ii
npacking Instructions
This page is intentionally blank

iii
TABLE OF
CONTENTS
Page
npacking Instructions i
Chapter 1 General Description 1-1
1.1 Introduction 1-1
1.2 Parts of the Thermometer 1-
1.2.1 Front of the Thermometer 1-
1.2.2 Rear of the Thermometer 1-5
Chapter 2 sing 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 2-7
2. Real Time Mode (Active Operation) 2-9
2. .1 Adjusting Emissivity 2-12
2. .2 Using the LOCK Function 2-12
2. . Calculating Temperature Values 2-1
2. .4 Changing the Temperature from °F to °C (or vice versa) 2-1
2. .5 Turning on the Display Backlighting 2-1
2. .6 Using the Alarm Functions 2-14
2. .7 Using Ambient Target Temperature
Compensation (OS521 through OS524) 2-16
2. .8 Sending Temperature Data to a Serial
Printer (OS521 through OS524) 2-17
2. .9 Sending Temperature Data to a Personal
Computer (OS521 through OS524) 2-19
2. .10 Storing the Temperature Data on Command
(OS522 through OS524) 2-22
2. .11 Erasing the Temperature Data from Memory 2-2
2.4 Recall Mode (Passive Operation) 2-24
2.4.1 Reviewing the Last Parameters 2-26
2.4.2 Downloading Previously Stored Temperature Data
(OS522 through OS524) 2-26
2.4. Reviewing Previously Stored Temperature Data
(OS522 through OS524) 2-28
Chapter 3 Laser Sight Module 3-1
.1 Warnings and Cautions -1
.2 Description -2
. Operating the Laser Sight Module -
. .1 Installing the Laser Sight Module onto the Thermometer -
. .2 Removing the Laser Sight Module from the Thermometer -5
Chapter 4 Sighting Scope 4-1
4.1 Sighting Scope 4-1
4.2 Installing and Operating the Sighting Scope 4-1
OS520 Series
Handheld Infrared Thermometer

iv
TABLE OF
CONTENTS OS520 Series
Handheld Infrared Thermometer
Page
Chapter 5 Maintenance 5-1
5.1 Replacing the Batteries 5-1
5.2 Cleaning the Lens 5-2
5. Cleaning the Power Contacts 5-2
5.4 Calibrating the Thermometer 5-2
5.5 Servicing the Laser Sight Module 5-2
Chapter 6 Troubleshooting Guide 6-1
Chapter 7 Specifications .............................................................. 7-1
Chapter 8 Glossary of Key Strokes ............................................. 8-1
Appendix A How Infrared Thermometry Works .......................... A-1
Appendix B Emissivity Values ..................................................... B-1
Appendix C Determining an nknown Emissivity ........................ C-1
Index ............................................................................................. I-1

v
TABLE OF
CONTENTS

1-1
General Description 1
1.1 Introduction
The OS520 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 Proce ing: 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
200 feet
• Emissivity adjustable from 0.1 to 1.00 in 0.01 steps provides
ease of use when measuring a variety of surfaces.
• An electronic trigger lock feature set via the keypad allows
continuous temperature measurement up to 4 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). OS524
provides 0.5 mV/degree analog output.
• RS2 2 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 100 temperature data points. Review the
recorded data on the thermometer LCD, as well as
downloading the data to a PC.
• Last temperature recall.
• Backlit display useful in low ambient light conditions.
• Powers from 4 AA size batteries or an ac adapter.
• Sighting Scope or Laser sight module are optional.

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. OS520 Series Handheld Infrared Thermometer Features
Features OS520 OS520E OS521 OS522
Accuracy *±2% rdg ±1% rdg ±1% rdg ±1% rdg
Range 0 to 750°F 0 to 1000°F 0 to 1000°F 0 to 1600°F
(-18 to 400°C) (-18 to 538°C) (-18 to 538°C) (-18 to 870°C)
missivity 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
Low Alarm — — standard standard
Audible Alarm & Indicator standard standard standard standard
Ambient Target — — standard standard
Temperature Compensation
Analog Output 1 mV/deg 1 mV/deg 1 mV/deg 1 mV/deg
RS-232 Output — — standard standard
Printer Output — — standard standard
Data Storage — — — standard
Laser Sight optional optional optional standard
Trigger Lock standard standard standard standard
Last Temperature Recall standard standard standard standard
LS-722, std.
Distance to Spot Size Ratio
OS523-1 30:1
OS523-2 60:1
OS523-3 68:1
** OS52 provides three field of views:
Features OS523** OS524
Accuracy ±1%rdg ±1% rdg
Range 0 to 2500°F 1000 to 4500°F
(-18 to 1371°C) (538 to 2482°C)
missivity 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
Printer Output standard standard
Data Storage standard standard
Laser Sight optional optional
Trigger Lock standard standard
Last Temperature Recall standard standard
A Sighting Scope is optional for models OS520 through OS524
* or °F whichever is greater

1-3
General Description 1
1.2 Parts of the Thermometer
1.2.1 Front of the Thermometer
Figure 1-1. OS520 Serie 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 for Laser Sight information.
"V" Groove
Battery
Compartment
Door
Trigger
Tripod
Thread
Mount
Wrist Strap
Display
Rubber
Boot
Membrane
S itch
(4 keys)
Backlit LCD
(Dual Display)
IR lens
Rubber Boot
°F
Laser Sight
Po er Contacts
covered by a
protective label

General Description
1
1-4
Figure 1-2.
Di play and
Keypad View
Table 1-2. Display Details
Key Description
➀Display Mode displays one of the following:
E( missivity) HAL (High Alarm Setpoint)
MAX (Maximum Temperature) LAL (Low Alarm Setpoint-only on OS521 to 524)
MIN (Minimum Temperature) AMB (Ambient Target Temp-only on OS521 to 524)
dIF (Differential Temperature) PRN (Print Data-only on OS521 to 524)
AVG (Average Temperature) MEM (Store Temperature Data-only on OS522 to 524)
➁Data associated with one of the Display Modes
➂Backlighting Icon - allows the display to be viewed under low ambient light
➃Displays the units of measure in either °F or °C
➄Main display - displays the current temperature
➅Locks the trigger / nables or Disables alarms
➆▲for incrementing data; is for turning on/off the backlighting
➇▼ for decrementing data; is for changing the units of measure from
°F to °C or vice versa
➈Function key for scrolling through the display modes
➉Display Icons
Trigger Lock Low Alarm
Ambient Target Temperature Low Battery
High Alarm Print Data
LCK HAL LOBAT
ATC LAL PRN
°F°C
1
10
9
8
7
6
5
4
3
2

1-5
General Description 1
1.2.2 Rear of the Thermometer
Figure 1- shows the various jacks that are used to connect a
recorder, a computer, and/or the ac adapter to the thermometer.
The figure also shows the location of the tripod thread mount used
for fixed point monitoring. More details are provided in Section
2.2.1.
Figure 1-3. OS520 Serie Handheld Infrared Thermometer Rear View
Analog Output Jack (1mV/deg)
RS-232 Phone Jack
(Not available for OS520 or OS520E)
Tripod Thread Mount
ac Adapter Input Jack

General Description
1
1-6
Notes

2-1
sing 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. In talling the Batterie
2.1.2 ac Power Operation
The thermometer may be operated on ac power using the optional
ac adapter. 120Vac/60 Hz and 220Vac/50 Hz adapters are
available. 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- .
NOTE

sing the Handheld Infrared Thermometer
2
2-2
2.2 Operating the Thermometer
1a. (Without the Laser Sight Module) -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 Sight Module) - Remove the protective label
from the Laser Sight Module contacts located at the top of
the thermometer. Refer to Figure 1-1 for the location of the
label. Slide the Laser Sight Module over the “V” groove of the
thermometer from back to front as shown in Figure 2-2 until it
locks in place. Set the laser sight power switch to the ON
position. Aim at the target and pull the trigger. The laser beam
and the red power indicator L D will turn on while the trigger is
pulled. Refer to Chapter 3 for more details on the Laser Sight
Module.
Figure 2-2. In talling the La er Sight Module
2. The field of view of the thermometer should fall within the area of the
target being measured. See Figure 2-3. Figures 2-4 through 2-9 show
the fields of view vs distance for the various thermometers.
Figure 2-3. Field of View Po ition
Field of Vie
Target
(ACCEPTABLE) (UNACCEPTABLE)
Laser Sight
Po er S itch
Po er Indicator LED
Lock/Unlock Lever
OFF
ON

Figure 2-4. Field of View OS520 & OS520E
Figure 2-5. Field of View OS521
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"
2-3
sing the Handheld Infrared Thermometer 2
SPOT DIA. * (IN)
SPOT DIA. * (CM)
** Mea urement di tance i from the out ide urface of the rubber boot.

sing the Handheld Infrared Thermometer
2
2-4
SPOT DIA. * (IN)
SPOT DIA. * (CM)
9"
0.9"@ 0
5.4"
22mm @ 0
1.8"
46 135 227
0.9"
0' 16' 82'50'
*SPOT DIAMETER MEASURED
AT 90% ENERGY
D:S = 110:1
25
05 15
DISTANCE: SENSOR TO OBJECT (FT)
SPOT DIA.* (MM) SPOT DIA.* (IN)
DISTANCE: SENSOR TO OBJECT (M)
Figure 2-7. Field of View OS524
Figure 2-6. Field of View OS522 & OS523-1
** Mea urement di tance i from the out ide urface of the rubber boot.

2-5
2.9"
0.9"@ 0
1.9"
22mm @ 0
1.2"
1.0"
31
26
48
75
0.9"
0' 3' 16'10'
*SPOT DIAMETER MEASURED
AT 90% ENERGY
D:S = 60:1
5'
5.0
01.0 3.01.5
SPOT DIA.* (MM) SPOT DIA.* (IN)
DISTANCE: SENSOR TO OBJECT (FT)
DISTANCE: SENSOR TO OBJECT (M)
7.0"
.35"@ 24"
1.6"
9mm @ 610mm
.8"
21 42
181
.9"
22
4.0"
101
0’ 3’ 16’10’2’ 5’
SPOT DIA.* (MM)
*SPOT DIAMETER MEASURED
AT 90% ENERGY
5.0
0.61 1.5
1.0 3.0
SPOT DIA.* (IN)
DISTANCE: SENSOR TO OBJECT (FT)
DISTANCE: SENSOR TO OBJECT (M)
Figure 2-8. Field of View OS523-2
Figure 2-9. Field of View OS523-3
sing the Handheld Infrared Thermometer 2

sing 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. The icon is no longer displayed. The Laser
Sight Module can only be turned on when the trigger is pulled.
5. After completing a temperature measurement, release the trigger. In
order to conserve battery life, the thermometer goes into sleep mode. The
display and the Laser Sight Module (if attached) immediately turn off.

2-7
sing the Handheld Infrared Thermometer 2
2.2.1 Measurement Techniques
You can use the IR Thermometer to collect temperature data in any
one of five different ways:
• Spot Mea urement — 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 Mea urement — 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.
• 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
2-10 for details. The IR thermometer provides an analog output
of 1mV/degree (0.5mV/deg for OS524).