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Miniature IR Infrared Sensor Transmitter -18 to 538°C

6 ft, Thermocouple Type K ouput , Miniature Non-Contact Infrared Temperature Sensor/Transmitter

C$764.13

Item# OS137A-3-K

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 C$764.13
5-9 C$725.92
10-24 C$710.64
25-49 C$680.08
50-99 C$664.79
100+ C$649.51

In stock

Lead Time (If not in stock): 3 weeks
6 ft, Thermocouple Type K ouput , Miniature Non-Contact Infrared Temperature Sensor/Transmitter OS137A-3-K OS137A-3-K
  • OS137A model has adjustable alarm setpoint and output
  • Emissivity for OS137A is adjustable and OS136A is fixed at 0.95
  • Sensor Housing for OS137A is rated NEMA 4, IP65
  • Sensor Housing for OS136A is rated NEMA 4, IP66

OS137A-3-K Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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Process Temprature Range
Field of View
Accuracy @ Ambient
Laser Output
Emissivity
Output (changed from Analog Output)
Supply Voltage
Spectral Response
Response Time
Intrisically Safe
Operating Temprature range
Built in Display
Cable Length


The Omega OS130A-Series offers a low cost, high-performance infrared (IR) sensor/transmitter in a 316 stainless steel housing. These IR sensors are ideal for hard-to-reach areas, confined spaces, or harsh environments. The 6 different output options provide simple interfacing directly to meters, controllers, data loggers, recorders, computer boards, and PLC's. The units come standard with 2 hex nuts, 1.8 m (6') shielded cable for power and output connections, and an operator’s manual.

The OS137A models feature adjustable emissivity 0.5 to 1, field of view 10 to 1, and adjustable alarm set points and voltage output to trigger external relays. The stainless steel housing makes this sensor durable and long lasting and the OS137A models have a NEMA IP65 rating.

The OS136A models have a NEMA IP66 rating and remain robust within many different environments. These models have an optical field of view of 6 to 1 with a fixed emissivity of 0.95.

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Rated 5 out of 5 by from OMEGA TEMPERATURE MEASUREMENT VERY ACCURATE INFRARED TEMPERATURE MEASUREMENT. I HAVE BEEN USING THIS ITEM INCORPORATEN IN A DEVICE USED IN THE AIRCRAFT INDUSTRY FOR SEVEERAL YEARS. IT IS ROBUST AND DEPENDABLE ANDDOES NOT DRIFT WITH TIME.
Date published: 2023-12-16
Rated 5 out of 5 by from Temperature spot on This unit works exactly like we expected. Easily mounted and immediately provides what we needed for our customer.
Date published: 2019-01-09
Rated 4 out of 5 by from Set up was simple! I set this unit up on my test bench. It was simple and worked well. We will install it on our production machine within the next few weeks. I'll update this review after we see how it works on a running machine. I gave it 4 stars until we try it in production.
Date published: 2018-06-19
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Can we measure food item temperature being cooked from OS136A-2? Can we have sensor at an angle while we measure? 20cm away from food item at 45 degree angle. temperature will be around 250 Celsius.

Asked by: bob270
Thank you for your inquiry. This product can be used to measure the surface temperature of food.
Answered by: Application Engineer CB
Date published: 2021-08-27

What are the wire colors for +24vdc, 24v common (Red and Black?) , type K wires (pink & olive?)

Asked by: nelsoro
Yellow Positive and Red negative. The Red and Black are correct.
Answered by: AndrewA
Date published: 2021-01-13

What is the exposed lens material for OS136A?

Asked by: RAMaston
Hi RAMason, Thank you for the inquiry. Lens is white Poly IR, 0.10” thick. Isopropyl alcohol on a cotton tip applicator should be fine for cleaning. Best regards OMEGA
Answered by: NorwalkAE
Date published: 2022-04-06

Infrared Sensor/Transmitter, Item# OS137A-1-K Hi, Can I use this to measure glass surface at a distance of 20cm? Do I need to tile the angle or perpendicular to the target surface, which is a piece of glass.

Asked by: John Ho
The OS137A-1-K can measure glass surface temperatures from 0 to 100C, The field of view is 10:1, so that at 20 cm away the spot size is 3.7 cm when the IR sensor is perpendicular to the surface that you are measuring. Please note that the spot size needs to be smaller than the object that you are measuring. Also note that this sensor will read the glass surface only not the objects behind the glass surface. Thank you.
Answered by: Jane
Date published: 2019-05-29

What is the exact lens cover material, not just "infrared polymer". I need to know for my application.

Asked by: Jeffro
Hi Jeffro, Thank you for the inquiry. Please forward this request to TEMP@OMEGA.COM Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2022-04-07
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