Omega OS137 User Manual 2

OS137 SERIES

Miniature Non-Contact Infrared

Temperature Sensor/Transmitter

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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: [e-mail]

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: