Need assistance? Call us: 1-800-663-4209
FineWire-DupInsul
Fine Gage Thermocouple Duplex Wire
Models In Stock
- 30, 36, and 40 Gage
- Convenient Spool Lengths 25, 50, 100, 200, 500, 1000 ft.
- ANSI Special Limits of Error and EN 60584-2 Tolerance Class 1 Rating Available on Most Models
FineWire-DupInsul
From
$
38.04
Models In Stock
Product Overview
- Cable Type Insulated Thermocouple
- Process Temperature, Min 0 °C
- Series ID FineWire-DupInsul
- Use With Sensor Type Thermocouple
Supported Applications
The Omega Fine Gage Thermocouple Duplex Wire series provides fine-gauge thermocouple extension and instrumentation wiring. The product is available in ANSI Type K (CHROMEGA™-ALOMEGA™), Type T (Copper-Constantan), Type J (Iron-Constantan), Type E (CHROMEGA™-Constantan), and Type N (Nicrosil-Nisil) configurations.
Operating Conditions & Performance
The series supports multiple temperature ranges depending on the insulation code selected. PFA or Neoflon insulated conductors with an overall PFA jacket support a range of -267 to 260°C (-450 to 500°F). Kapton® fused polyimide tape also covers -267 to 260°C (-450 to 500°F). Glass braid over PFA or Neoflon conductors (Insulation Code TG) supports -73 to 260°C (-100 to 500°F), while all-glass construction (Glass Wrap and Glass Braid, Insulation Code GG) extends the range from -73 to 482°C (-100 to 900°F). Specific thermocouple types have distinct maximum temperature limits within these insulation envelopes: Type T with Neoflon is rated to 150°C (300°F); Type J and E with Glass are rated to 316°C (600°F) and 320°C (700°F), respectively; Type K and N with Glass are rated to 482°C (900°F).
Most models in the series offer ANSI Special Limits of Error and EN 60584-2 Tolerance Class 1 Rating. The wire is supplied as solid conductors.
Insulation Codes and Temperature Ranges
- TT (PFA or Neoflon): -267 to 260°C (-450 to 500°F)
- KK (Kapton®): -267 to 260°C (-450 to 500°F)
- TG (Glass Braid over PFA/Neoflon): -73 to 260°C (-100 to 500°F)
- GG (Glass Wrap and Glass Braid): -73 to 482°C (-100 to 900°F)
Configuration Options
The series is configurable across several dimensions including wire gauge, insulation type, thermocouple alloy, and spool length. Wire gauges are available in 30 AWG, 36 AWG, and 40 AWG.
Thermocouple Types
- Type K (CHROMEGA™-ALOMEGA™)
- Type T (Copper-Constantan)
- Type J (Iron-Constantan)
- Type E (CHROMEGA™-Constantan)
- Type N (Nicrosil-Nisil / OMEGALLOY™ vs. OMEGA-P™/OMEGA-N™)
Insulation Materials and Construction
- PFA or Neoflon: Available with PFA overall jacket (Code TT).
- Kapton®: Fused Polyimide Tape for both conductor insulation and overall covering (Code KK).
- Glass Braid over PFA/Neoflon: Glass braid outer layer with PFA or Neoflon inner conductors (Code TG).
- All-Glass Construction: Glass wrap on conductors with a glass braid overall jacket (Code GG).
Spool Lengths and Ordering Options
Standard spool lengths include 25, 50, 100, 200, 500, and 1000 ft. Metric options are available in meters (e.g., 7.5M to 300M) for specific configurations. To order wire with Special Limits of Error, add 'SLE' to the model number before the spool length designation.
Key Product Differences
The series distinguishes between insulation types primarily by their maximum temperature capability and physical construction. Glass-insulated variants (GG) provide higher thermal limits up to 482°C (900°F) compared to PFA/Neoflon or Kapton® options, which are limited to 260°C (500°F). However, specific thermocouple alloys impose further restrictions; for example, Type T with Neoflon insulation is rated only to 150°C (300°F), and Type J/E glass variants have maximums of 316°C (600°F) and 320°C (700°F).
Color coding follows ANSI standards for each thermocouple type: Type K uses Yellow/Red conductors with a Brown overall; Type T, J, E use Blue/White/Purple positive leads respectively against Red negative leads, all with Brown overall. Kapton® wire is not IEC or ANSI color coded.
Model numbers follow the format Duplex Insulated Thermocouple Wire - [Insulation Code] - [AWG No.] - [Type Wire] - [Special Limits of Error (SLE)] - [Spool Length]. For example, a 30 AWG Type K wire with Glass insulation and Special Limits of Error on a 1000 ft spool is ordered as GG-K-30-SLE-1000.
PDFs & Manuals
Show Ratings & Reviews
Rated 5 out of
5
by
Kat thai from
Excellent quality thermocouple wire
Excellent quality duplex insulated thermocouple wire. The product met the published specifications and has performed reliably in our application. The insulation is durable, easy to strip without damaging the conductors, and the wire is easy to work with during installation. Temperature measurements have been accurate, stable, and repeatable, and the overall construction inspires confidence for long-term use. The wire arrived exactly as described, was well packaged, and met all my expectations. I would definitely purchase this product again and would recommend it for industrial, laboratory, or general process temperature measurement applications.
Date published: 2026-07-08
Rated 5 out of
5
by
Pawankarki from
Thermocouple
It is good. It can be used tomake good thermocouples.
Date published: 2026-06-21
Rated 5 out of
5
by
Liv S from
good quality, accurate
good quality, very thin and accurate! I was surprised by the durability of this very fine TC wire
Date published: 2025-08-11
Rated 5 out of
5
by
Arthur D from
Accurate and easy to work on the tight place.
This insulated T/C wire TT-J-30 always works great in our application.
Date published: 2025-02-10
Rated 5 out of
5
by
STEINSEAL from
Great Quality and Purchase
Great purchase, exactly what I was looking for. Good Quality.
Date published: 2024-08-19
Rated 5 out of
5
by
P Schuneman from
Exactly as described. No problems.
Exactly as described. No problems or issues. Easy to work with.
Date published: 2024-06-10
Rated 5 out of
5
by
Anonymous from
The best in the bussiness
High flexibility, easy to weld into thermocouples, reliable during extended testing
Date published: 2024-04-15
Rated 5 out of
5
by
Israel from
Omega TC tt-36-k-200ft
It takes a couple days before shipping the package.
Date published: 2024-02-18
What voltage can the outer insulation material of the TT-K-36 withstand? Is there a test report that you can provide?
Thank you for your inquiry. In general, thermocouple wire and insulation are not voltage rated.
Date published: 2026-03-04
Should the leads be soldered or twisted together for the most accurate results?.
Thank you for your inquiry K Simmucor. For the most accurate results, the leads have to be soldered together. If you have any other questions, please do not hesitate to contact us directly at 1-800-622-2378, ask for Temperature Engineering or temp@omega.com.
Date published: 2021-11-01
What is the recommended solder to be used?
Thank you for your inquiry. Do not use solder with thermocouple wire. Only use thermocouple connectors, terminal blocks and barrier strip to make connections.
Date published: 2021-03-25
Would it not be better to weld the lead wires? Does Omega solder or weld the lead wires on their probes, I would like to know. (I am not talking about the measuring junction, only the lead wires.)
Thank you for your inquiry. Solder is never recommended when making measuring junctions or extending lead wires. Use Arc Welding to make measuring junctions. Use thermocouple compensated connectors and terminal blocks to extend wires.
Date published: 2021-10-27
Can you provide the thermocouple wires (e.g.TT-K-30-SLE-50) with ISO 17025 accredited calibration certificate?
Thank you for your inquiry. Unfortunately, we are unable to calibrated products to ISO 17025 Standards. We only provide NIST Traceable Calibration.
Date published: 2023-06-02