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Introduction

1

NOTE:

The OS137A Series is a precision, miniature infrared transmitter. It measures
temperature via non-contact, and provides an analog output proportional to
the measured temperature. The OS137A 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 1 - INTRODUCTION

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 following items are supplied in the box:
• The infrared transmitter, OS137A with the 1.82 m (6’) shielded cable.
• Two mounting nuts
• The User’s Guide
The following describes the ordering information:
OS137A – * – ** , 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
- ** means:
-MA : 4 to 20 mA current output
-V1 : 0 to 5 Vdc output
-V2 : 0 to 10 Vdc output

SECTION 2 – INSTALLATION

2.1 – Unpacking

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.

1

Summary of Contents for OS137A Series

Page 1: ...ega com For latest product manuals omegamanual info Shop online at omega com OS137A SERIES Miniature Non Contact Infrared Temperature Sensor Transmitter TM CAUTION This product is not intended for med...

Page 2: ...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...

Page 3: ...g 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...

Page 4: ...lon 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 protecti...

Page 5: ...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 cservice omeg...

Page 6: ...ows alarm output connections 2 2 Electrical Connection Apply DC power after making all the wiring connection Accessories Model No OS137 MB Mounting Bracket Water Air Cooling Jacket with Built in Air P...

Page 7: ...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 su...

Page 8: ...sor 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 t...

Page 9: ...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...

Page 10: ...ch on the main board to the Alarm position 2 Measure the analog output and adjust the Alarm Potentiometer until the output reads 10 4 mA which is 40 204 C 400 F of the temperature range 18 to 538 C 0...

Page 11: ...emoved from the front of the transmitter head before temperature measurement is made The laser sight accessory is powered from a small compact battery pack included with the accessory Connect the batt...

Page 12: ...Figure 4 1 Laser Sighting Accessory OS137 LS Figure 4 2 Laser Warning Label Laser Sight Accessory 4 8...

Page 13: ...ts Min Load 0 to 5 Vdc 1 K Ohms Min Load 0 to 10 Vdc 1 K Ohms Max Load 4 to 20 mA Power Supply 4 20 mA Min Load 10 mV Deg 1 K Ohms Min Load K T C 10 K Ohms Operating Relative Humidity Less than 95 RH...

Page 14: ...ence Less than 2 mrad Operating Temperature 0 to 50 C 32 to 122 F Operating Relative Humidity Less than 95 RH non condensing Power Switch ON OFF Slide Switch on the battery pack Power Indicator Red LE...

Page 15: ...t iron 0 94 Iron and steel excluding stainless rusted iron plate 0 69 Iron and steel excluding stainless polished steel 0 07 Iron and steel excluding stainless polished steel oxidized at 600 C 1112 F...

Page 16: ...x lead soda 0 85 to 0 95 Marble polished light gray 0 93 Paints lacquers and varnishes Black matte shellac 0 91 Paints lacquers and varnishes aluminum paints 0 27 to 0 67 Paints lacquers and varnishes...

Page 17: ...OS137 Series Miniature Non Contact Infrared Temperature Sensor Transmitter 6 NOTES 13...

Page 18: ...on outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a res...

Page 19: ...lewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial pH Conductivity Equipment...

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