Omega OS137 SERIES User manual

OS137 SERIES
Miniature Non-Contact Infrared
Temperature Sensor/Transmitter
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CAUTION! – This product
is not intended for medical
use or use on humans

Servicing North America:
U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047
ISO 9001 Certified Stamford, CT 06907-0047 USA
Toll Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [email protected]
Canada: 976 Bergar
Laval (Quebec), Canada H7L 5A1
Toll-Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [email protected]
For immediate technical or application assistance:
U.S.A. and Canada: Sales Service: 1-800-826-6342/1-800-TC-OMEGA®
Customer Service: 1-800-622-2378/1-800-622-BEST®
Engineering Service: 1-800-872-9436/1-800-USA-WHEN®
Mexico: En Español: 001 [phone] FAX: [phone]
[email protected] e-mail: [email protected]
Servicing Europe:
Benelux: Managed by the United Kingdom Office
Toll-Free: 0800 099 3344 TEL: [phone]
FAX: [phone] e-mail: [email protected]
Czech Republic: Frystatska 184
733 01 Karviná, Czech Republic
Toll-Free: 0800-1-66342 TEL: [phone]
FAX: [phone] e-mail: [email protected]
France: Managed by the United Kingdom Office
Toll-Free: 0800 466 342 TEL: [phone]
FAX: [phone] e-mail: [email protected]
Germany/Austria: Daimlerstrasse 26
D-75392 Deckenpfronn, Germany
Toll-Free: 0 800 6397678 TEL: [phone]
FAX: [phone] e-mail: [email protected]
United Kingdom: OMEGA Engineering Ltd.
ISO 9001 Certified One Omega Drive, River Bend Technology Centre, Northbank
Irlam, Manchester M44 5BD England
Toll-Free: 0800-488-488 TEL: [phone]
FAX: [phone] e-mail: [email protected]
OMEGAnet®Online Service Internet e-mail
omega.com [email protected]
It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

i
OS137 Series Miniature Non-Contact Infrared
Temperature Sensor/Transmitter
Table of Contents
Section Page
Caution & Safety Information ...................................................................... iii
Safety Warnings and IEC Symbols .............................................................. iii
Section 1 Introduction .................................................................................... 1
Section 2 Installation ...................................................................................... 1
2.1 Unpacking .................................................................................. 1
2.2 Electrical Connection ................................................................ 2
Section 3 Operation ......................................................................................... 3
3.1 Measuring Temperature ........................................................... 3
3.2 Ambient Temperature ............................................................... 4
3.3 Atmospheric Quality ................................................................ 4
3.4 Alarm Setting ............................................................................. 6
Section 4 Laser Sight Accessory .................................................................... 7
4.1 Warnings and Caution .............................................................. 7
4.2 Operating the Laser Sight Accessory ..................................... 7
Section 5 Specifications .................................................................................. 9
5.1 General ........................................................................................ 9
5.2 Laser Sight Accessory ............................................................. 10
Section 6 Emissivity Tables .......................................................................... 11

OS137 Series Miniature Non-Contact Infrared Temperature Sensor/Transmitter
ii
Table of Figures
Figure Description Page
2-1 General Wiring Diagram ................................................................ 2
2-2 Alarm Output Wiring Diagram .................................................... 2
3-1 Optical Field of View ...................................................................... 3
3-2 Location of Emissivity & Alarm Adjust and Alarm Switch ......... 3
3-3 Mounting Bracket, OS137-MB ....................................................... 4
3-4 Air Purge Collar, OS137-AP ........................................................... 4
3-5 Stainless Steel Housing .................................................................. 5
3-6 Water/Air Cool Jacket, OS137-WC .............................................. 5
4-1 Laser Sighting Accessory, OS137-LS ............................................. 8
4-2 Laser Warning Label........................................................................ 8

OS137 Series Miniature Non-Contact Infrared Temperature Sensor/Transmitter
iii
CAUTION & SAFETY INFORMATION
If the equipment is used in a manner not specified in this manual, the protection
provided by the equipment may be impaired.
The Installation category is one (1).
There is no user replaceable fuse in this product.
The output terminals of this product are for use with equipment (digital meters,
chart recorders, etc.) which have no accessible live parts. Such equipment should
comply with all the applicable safety requirements.
Do not operate the equipment in flammable or explosive environments.
The unit comes with a 1.82 m (6') shielded cable for power and output
connections. The cable is a multi-conductor, 24 AWG stranded wire with the
rating of 600 VDC, 205ºC (401°F) Teflon®insulation.
Power must be disconnected before making any electrical connections.
The recommended power supply should be VDE or UL approved. Rating:12-24
VDC @ 50 mA mininum power with overload protection.
The supply voltage to the transmitter should not exceed 24 VDC.
SAFETY WARNINGS AND IEC SYMBOLS
This device is marked with international safety and hazardous symbols in
accordance with IEC1010. It is important to read and follow all the precautions
and instructions in this manual before operating or commissioning this device as
it contains important information relating to safety and EMC. Failure to follow
all the safety precautions may result in injury and/or damage to your
equipment.
IEC Symbol Description
Caution - Refer to the accompanying
document(s).
Direct Current
Laser Symbol

1
SECTION 1 - INTRODUCTION
The OS137 Series is a precision, miniature infrared transmitter. It measures
temperature via non-contact, and provides an analog output proportional to the
measured temperature. The OS137 Series is offered in three temperature ranges:
0 to 100ºC (32 to 212ºF), -18 to 260ºC (0 to 500ºF) and -18 to 538ºC (0 to 1000ºF).
The analog output is offered as 4 to 20 mA, 0 to 5 Vdc, 0 to 10 Vdc, 10
mV/degree C or F, or K type thermocouple.
The unit provides adjustable emissivity from 0.5 to 1.0, 10 to 1 optical field of
view, and field adjustable alarm output.
The super-compact design, 25.4 mm OD x 127 mm length (1.0" OD x 5.0" L) is
ideal to measure temperature in confined, and hard to reach places. The Stainless
Steel housing is NEMA-4 rated. The unit comes standard with a 1.82 m (6')
shielded cable.
SECTION 2 – INSTALLATION
2.1 – Unpacking
Remove the packing list and verify that you have received all your equipment. If
you have any questions about the shipment, please call OMEGA Customer
Service at:
1-800-622-2378 or 203-359-1660. We can also be reached on the internet at
www.omega.com
email: [email protected]
When you receive the shipment, inspect the container and the equipment for any
signs of damage. Note any evidence of rough handling in transit. Immediately
report any damage to the shipping agent.
The carrier will not honor any damage claims unless all the
shipping materials are saved for inspection. After
examination and removal of contents, save packing material
and carton in the event that reshipment is necessary.
The following items are supplied in the box:
• The infrared transmitter, OS137 with the 1.82 m (6') shielded cable.
• Two mounting nuts
• The User’s Guide
The following describes the ordering information:
OS137 – * – ** , where
- * means:
-1 : 0 to 100°C (32 to 212ºF) temperature range
-2 : -18 to 260ºC (0 to 500ºF) temperature range
-3 : -18 to 538°C (0 to 1000°F) temperature range
Introduction
1
NOTE:

2
2
- ** means:
-MA : 4 to 20 mA current output
-V1 : 0 to 5 Vdc output
-V2 : 0 to 10 Vdc output
-K : K type thermocouple output
-MVC : 10 mV/ºC output
-MVF : 10 mV/ºF output
The following table lists the optional accessories:
2.2 – Electrical Connection
The shielded cable provides the power and output connections. Fig 2-1 shows
the wiring diagram for different analog outputs. Fig. 2-2 shows alarm output
connections.
Figure 2-1. General Wiring Diagram
Figure 2-2. Alarm Output Wiring Diagram
Accessories
Model No. Description
OS137-MB Mounting Bracket
OS137-WC Water/Air Cooling Jacket with Built-in Air Purge Collar
OS137-AP Air Purge Collar
OS137-LS Laser Sighting
PSR-24S Regulated 24 VDC (400 mA) Power Supply
CAL-3-IR NIST Traceable Calibration
Installation
RED
WHITE
12-24 Vdc
POWER SUPPLY
-OR-
10 mV/Deg
0/5 Vdc or 4-20 mA
or 0/10 Vdc
EARTH
GROUND
DIGITAL
VOLTMETER/
AMMETER/
RECORDER
BLACK
SHIELD
+
+
–
–
YELLOW
THERMOCOUPLE
METER/
RECORDER RED
K TYPE
THERMOCOUPLES
+
–
OS137
WHITE
12-24 Vdc
POWER SUPPLY
EARTH
GROUND
BLACK
SHIELD
+
–
OS137
+
–
MECHANICAL
RELAY
BLACK
GREEN

3
Operation
3
SECTION 3 – OPERATION
3.1 – Measuring Temperature
Before starting to measure temperature, make sure the following check list is met:
The power and output connections are made (Fig 2-1).
The target is larger than the optical field of view of the transmitter (Fig 3-1).
 Use the Laser Sighting accessory (optional), to align the transmitter to the
center of the target area.
 Remove the End Cap to get to the Emissivity Single Turn Pot (Fig. 3-2). Set
the Emissivity Pot based on the target surface. Then put back the End Cap.
 Make sure the output load is within the product specification.
Figure 3-1. Optical Field of View
Figure 3-2. Location of Emissivity & Alarm Adjust and Alarm Switch
SPOT DIA.* (CM) SPOT DIA.* (IN)
DISTANCE: SENSOR TO OBJECT (FT)
D:S = 10:1
1.6 cm@0
040
5.6
80
9.6
210
13.6
160
17.6
200
21.6
244
26
0.65"@0"
3.0"
1.75"
5.5"
7.8" 10.2"
8
6
4
21
0
DISTANCE: SENSOR TO OBJECT (CM)
* SPOT DIAMETER MEASURED AT 90% ENERGY
ALARM
SWITCH
1- REAL TIME
2- ALARM POSITION
ALARM
ADJUST
EMISSIVITY
ADJUST
REMOVE THE SCREW TO PULL OUT
THE END CAP. THE EMISSIVITY AND
ALARM ADJUST & ALARM SWITCH ARE
LOCATED ON THE MAIN PC BOARD.
END CAP
12
1.00
0.70
0.60 0.90
0.80
0.50

Operation 3
4
3.2 – Ambient Temperature
The transmitter can operate in an ambient temperature of 0 to 70°C (32 to 158°F)
without any water cool jacket. It can operate from 0 to 200°C (32 to 392°F) with
the water cool jacket accessory, OS137-WC (Fig 3-6 & 3-7). It can operate up to
110°C (230°F) with air cooling.
There is a warm up period of 1 to 2 minutes after power up. After the warm up
period, temperature measurement can be made.
When the ambient temperature around the transmitter changes abruptly, the sensor head
goes through a thermal shock. It takes a certain amount of time for the sensor head to get
stabilized to the new ambient temperature. For example, it takes about 30 minutes for the
transmitter to stabilize from the 25°C to 50°C (77°F to 122°F) ambient temperature.
3.3 - Atmospheric Quality
Environments with smoke, dust, and fumes dirty up the optical lens, and cause
erroneous temperature readings. To keep the surface of the optical lens clean, the
air purge collar accessory is recommended, OS137-AP (Fig 3-4).
The following figures show the Mounting Bracket (OS137-MB), Air Purge Collar
(OS137-AP), Stainless Steel Housing and Water/Air Cool Jacket (OS137-WC),
with built-in air purge collar.
Figure 3-3. Mounting Bracket, OS137-MB
DIMENSIONS mm (in)
57.2
(2.25)
12.7
(0.50)
95.3
(3.75)
90
90
17.4
(0.687)
19.8
(0.78)
3.2
(1/8)
3.2
(1/8)
17.4
(0.686)
INSERT
OS137 HEAD
INTO THE HOLE
98.8
(3.89)
96.5
(3.80)
53.3
(2.10)
25.4
(1.0)
50.8
(2.0)
25.9 (1.020) DIA.
4.3 (0.170) DIA.
4.3
(0.170)
15.2
(0.6)
32.5
(1.28)
28.6
(1.125)

Figure 3-4. Air Purge Collar, OS137-AP
Figure 3-5. Stainless Steel Housing
Figure 3-6. Water/Air Cool Jacket, OS137-WC
Operation
3
5
LIGHT DIAMOND KNURL
2.5 (0.1) WIDE
DIMENSIONS mm (in)
1-20 UNEF
127
(5.0)
1.83 m
(6 ft)
42.4
(1.67)
25.4
(1.0)
DIMENSIONS mm (in)
128.6
(5.062) 7.9
(0.312)
41.2
(1.625)
1-20 UNEF 9.5
(3/8)
1-20
UNEF
BUILT-IN
AIR PURGE
COLLAR
APPLY
CLEAN AIR
INLET
OUTLET
BARB ADAPTER 3/16" ID
1/4-28 UNF THREAD
DIMENSIONS mm (in)
BARB ADAPTER 3/16" ID
1/4-28 UNF THREAD
1-20 UNEF 14.3
(0.562)
41.3
(1.625)