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								XC-J-TC-WIRE
J Type Thermocouple Duplex Wire
			Models In Stock
	- High Quality Type "J" Thermocouple Grade Wire
- In Stock - Available for Immediate Shipment
- Choice of Insulation, Wire Gage, & Length
XC-J-TC-WIRE
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						Models In Stock
				
			
		     
Product Overview
	- Alloy Material (-) Constantan
- Alloy Material (+) Iron
- Nominal Size 0.068 x 0.116 in
- Process Temperature, Min 0 °C
- Thermocouple Type J
- Use With Sensor Type Thermocouple
ANSI Color Code:  Positive wire:  White; Negative wire:  Red; Overall color:  Brown
IEC Color Code:  Positive wire:  Black; Negative wire:  White; Overall color:  Black
Our J Type Thermocouple Grade Duplex Wire is engineered to deliver dependable temperature measurement performance in industrial, lab, and OEM environments. This wire is an excellent choice for a wide range of temperature applications and is  used across many industries,  process control systems, manufacturing operations, and HVAC setups.
Constructed with iron and constantan conductors, this J Type thermocouple wire supports solid or stranded configurations and is available in a full range of gauges including 20 AWG, 24 AWG, 26 AWG, 28 AWG, and 30 AWG. You can customize your build with a variety of high-performance insulation options, including PFA, polyvinyl, glass braid,  tape, and Kapton® polyimide. Depending on the insulation, this wire can operate at temperatures up to 1094°F (590°C), giving you the flexibility to choose what fits your exact application.
The duplex construction ensures fast and accurate temperature readings, while ANSI and IEC standard color coding makes installation simple and foolproof. Options for standard or Special Limits of Error (SLE) accuracy are available to meet your specific performance requirements.
Built with rugged environments in mind and backed by DwyerOmega's reputation for quality, this J Type thermocouple wire is a smart investment for projects that require both precision and durability.
Ready to configure your wire? Choose your specs above and order today to keep your operation moving forward.
Check out all of our wire color codes HERE
Still need to compare thermocouple wires? We've got you covered! 
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Show Ratings & Reviews
 
			
	
	
	
        
            Rated 5 out of
            5
         by
        BUYQUALITY161 from
        EXCELLENT WIRE
        We buy this wire on a regular basis. Excellent quality wire for our applications.
        
    Date published: 2016-02-02
        
    
        
            Rated 5 out of
            5
         by
        Alex J M from
        Thermocouple wire
        Easy to order the product, fast delivery, good quality.
        
    Date published: 2025-09-03
        
    
        
            Rated 5 out of
            5
         by
        Leslie B from
        Right wire for the right Job
        Perfect wire, incredible tolerances, reliable readings.
        
    Date published: 2025-08-07
        
    
        
            Rated 5 out of
            5
         by
        Gas and Supply from
        Order Process
        Order processed was wonderful. This process was simple and quick
        
    Date published: 2024-09-16
        
    
        
            Rated 5 out of
            5
         by
        Gringo Loco from
        Great wire
        This wire is as accurate as it gets and easy to work with.
        
    Date published: 2024-08-14
        
    
        
            Rated 5 out of
            5
         by
        RPM Corp from
        OMEGA
        Good quality product for the price, good delivery time.
        
    Date published: 2024-07-29
        
    
        
            Rated 5 out of
            5
         by
        Gate from
        Exactly what I needed
        it was exactly what I needed, it met my needs and was delivered on time.
        
    Date published: 2024-06-03
        
    
        
            Rated 5 out of
            5
         by
        Luis Renteria from
        Thermocouple wire type J duplex
        Fast delivery, great product according to specifications
        
Date published: 2024-05-10
        
    Can you provide this type J thermocouple wire calibrated to ISO 17025?
            Hi Hepin
Thank you for the inquiry. Unfortunately we currently do not offer calibrations with ISO 17025 certification.
Best regards
OMEGA
            
            
    Date published: 2023-09-07
        What is the difference in SLE tolerance compared to non SLE?
            Thank you for your inquiry. Please review page 2 of this document to see the difference in SLE tolerance compared to non SLE: https://assets.omega.com/landing-pages/colorcodes/tc_colorcodes.pdf
            
            
    Date published: 2024-02-21
        Hello Omega team, I am looking a wire for thermocouple type J and K that being flexible or easy to manipulate with a range of 400 - 800 °F, the wire will be exposed in an environment of 90 °F. could you recommend me one with that characteristics?
            Thank you for your inquiry. You will need to purchase a thick gauge wire with the fiberglass insulation. For assistance on the exact part number, please email us at temp@dwyeromega.com or call us at 1-888-826-6342.
            
            
    Date published: 2024-04-15
        I have to do high temp testing inside a shipping container. Do I need to run 1 continuous thermocouple to the meter or could I run a high temp wire inside the container and connect it up to a regular thermocouple wire from there to the meter?
            Thank you for your inquiry Segan11. Either or would work but we recommend you use a wire that is rated for the temperature inside the container.
            
            
    Date published: 2022-10-14
        If I purchase thermocouples, part number 5TC-TT-J-24-72. do they include a certification?
            Thank you for your inquiry Fred33. The 5TC-TT-J-24-72 comes from us with a Certificate of Conformance that states that this product meets all the specs stated on the data sheet. If you need a NIST certificate of calibration, please send a quote request to sales@omega.com.
            
            
    Date published: 2022-11-18
        What is IEC standard
            Thank you for your interest in our Product
.
IEC will apply to the color coding of the jacket and insulation only. For Thermocouple  Grade Type J  for example, the color coding is a Black jacket with a  (+) Black and (-) white insulation
All accuracy testing of the wire is conducted in accordance with ASTM E 230 which has slightly tighter tolerances in the lower temperature ranges than the IEC 584 specification.
            
            
    Date published: 2021-11-01
        Is the "max temperature" listed (ex. 480C) the maximum temperature an attached thermocouple probe can measure? Or is that the maximum temperature the wire itself can be exposed to?
            Thank you for your inquiry. It is the maximum temperature the wire (along with the insulation) itself can be exposed to.
            
            
    Date published: 2024-01-08
        Does this come with the connectors to attach to the meter?
            Thank you for your inquiry laz87. No, this wire does not come with the connectors. The connectors are sold separately.
            
            
    Date published: 2022-04-22
         
						
						 
					
				