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TJ36-FG

Fine Diameter (0.01 in to 0.04 in) Rugged Thermocouple Transition Joint Probes

Models In Stock
  • Diameters as small as 0.25mm (0.010') !
  • Probes Available in E, J, K, N, and T Calibrations
  • 304 SS and Inconel® 600 sheaths
  • Additional Sheaths Available: 310 SS, 316 SS, 321 SS and Super OMEGACLAD™ XL
TJ36-FG
From $ 74.23
Models In Stock
Fine Diameter (0.01 in to 0.04 in) Rugged Thermocouple Transition Joint Probes TJ36-FG TJ36-FG
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Product Overview
  • Insulation Note Type K and N Can be Manufactured with Super OMEGACLAD® XL Compacted Mineral Insulation Cable for Long-Lasting Performance in Harsh Conditions
  • Number of Connectors N/A
  • Process Temperature, Max 700 °C
  • Process Temperature, Min 0 °C
  • Series ID TJ36-FG
  • Temperature Sensor Type Thermocouple
  • Wire Type Stranded

Supported Applications

The Omega TJ36 series comprises rugged transition joint probes designed for temperature measurement using thermocouple technology. These fine-diameter sensors feature a metal probe section transitioning to PFA-coated lead wire, intended for applications requiring flexibility and durability in the sensor assembly.

  • Temperature sensing with Type K (CHROMEGA®-ALOMEGA®), J (IRON-CONSTANTAN), T (COPPER-CONSTANTAN), E, and N calibrations
  • Type K and N configurations available with Super OMEGACLAD® XL compacted mineral insulation cable for harsh conditions

Operating Conditions & Performance

The series meets or exceeds Special Limit of Error (SLE) and EN 60584-2: Tolerance Class 1. Process temperature limits vary by sheath material, thermocouple type, and diameter as documented in the specification table:

  • Type K with XL sheath: Up to 800°C (1472°F)
  • Type K with 304 SS or Inconel® 600 sheaths: Up to 700°C (1290°F) for diameters ≥0.50 mm; up to 500°C (932°F) for 0.25 mm diameter
  • Type J and Type T with 304 SS sheath: Up to 260°C (500°F)

The entire assembly is rated to 260°C (500°F). Sheath diameters range from 0.25 mm (0.010") to 1.00 mm (0.040"). Standard probe lengths include 150 mm (6"), 300 mm (12"), and 450 mm (18"), with custom lengths available in increments.

Configuration Options

Sheath Materials & Wetted Parts

  • Standard: 304 SS, Inconel® 600
  • Additional options: 310 SS, 316 SS, 321 SS, Super OMEGACLAD® XL (XL)

Junction Types & Electrical Connections

The series supports three junction configurations specified in the model number:

  • Exposed (E)
  • Grounded (G)
  • Ungrounded (U)

Standard termination is stripped lead wire. Optional connectors include a miniature connector (suffix SMPW-M) and a standard connector (suffix OSTW-M). A spring strain relief prevents pinching of the wire at the transition joint.

Cable & Lead Wire

  • PFA-coated 24-stranded lead wire, typically 1 m (40") in length for standard configurations
  • Stainless steel overbraid available on select models to protect the PFA jacket

Special Options & Calibration

The series offers Cal-5 calibration availability. Type K and N probes can be manufactured with Super OMEGACLAD® XL compacted mineral insulation cable.

Key Product Differences

Variants within the TJ36-FG series are distinguished by thermocouple type, sheath material code (e.g., CASS for 304 SS Type K, CAIN for Inconel® 600 Type K), diameter designation (010 through 040 representing mm/inch equivalents), junction style (E/G/U), and insertion length. Model numbers follow the format TJ36----. Specific suffixes denote connector options or overbraid protection.

  • Type J probes are not available in 0.25 mm (0.010") diameter
  • 316 SS, 310 SS, and 321 SS sheaths require modifying the 'SS' code to '316SS', '310SS', or '321SS' in the model number with no additional charge noted for material change alone.
Rated 5 out of 5 by from Great probe Excellent response in robust form factor. The stepped version is awesome.
Date published: 2025-08-20
Rated 5 out of 5 by from Everything received and working as expected. Reliable company with reliable products. Works like a charm!
Date published: 2024-04-04
Rated 5 out of 5 by from Great company with great products. Everything works as expected. Received everything as expected.
Date published: 2024-04-04
Rated 5 out of 5 by from Ready to use Temocouples Customer built by omega to your specs, shipped and ready to use.
Date published: 2023-08-21
Rated 1 out of 5 by from Wrong reference It is too long and too thin, I send pictures and request a quote whit a previous reference, but the reference that your teem gave me wasn't correct
Date published: 2020-09-11
Rated 5 out of 5 by from 0.01" fine wire T/C for speedy measurements We use the 0.10" fine wire t/c for testing the temperature reaction time of of thermal sensing shower valves to measure the speed of the reaction time in the milliseconds.
Date published: 2020-04-10
Rated 4 out of 5 by from nice coupler great for our application. the only problem i had was it needed to go into the side of a hot block had to bend the probe about 90' and the first one cracked.i was able to install the second one at less of an angle it was fine.
Date published: 2017-08-14
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What would the transition joint diameter be for the TK36-CASS-020G-2? Could I use a thermocouple compression fitting on this? Would omegalok work for that?

Asked by: DerekJ
Thank you for your inquiry DerekJ. The transition joint diameter is 1/4". Yes you can use compression fittings with this probe.
Answered by: Application Engineer MC
Date published: 2022-12-03

Over what distance at the tip does this measure temperature for this model?

Asked by: NikiLab
The thermocouple junction is at the tip of the probe. Within the first 0.5 inch the temperature is being taken.
Answered by: AndrewA
Date published: 2021-01-15

What is the overall length (excluding wires) of TK36-CASS-020G-2?

Asked by: CalebK
Thank you for your inquiry CalebK. The length of the probe is 2". The transition joint is 2.25"
Answered by: Application Engineer MC
Date published: 2022-12-03

In reference guide, upper temperature limit table indicates the upper temperature limit of T-TC (24AWG, 0.020 in) is 200 C. This website shows the upper temperature limit of TJ36-CPSS-020U-6 is 260 C. Which is correct?

Asked by: Tabull
Thank you for your inquiry. TJ36-CPSS-020U-6 has MgO Insulation that allows for higher upper temperature.
Answered by: Application Engineer CB
Date published: 2022-09-30

I'm looking for a thermocouple with the highest accuracy possible (range of temp from 0 to 40°C) and a 0.01" probe diameter. What is the best thermocouple for this ?

Asked by: Palyb
Thank you for your inquiry. We need more information in order to provide a product. Please email your request to temp@dwyeromega.com that way one of our engineers can advise.
Answered by: Application Engineer MC
Date published: 2024-04-06

Hello, is this probe able to be bent to a 90 degree configuration? If so, what bend radius would be achievable? My application has a very small space to operate in.

Asked by: Mech Engineer CB
Thank you for your inquiry. Bending Metallic Sheathed Thermocouples: The Minimum Bend RADIUS Should be NO LESS than THREE TIMES the diameter of the probe being bent.
Answered by: Application Engineer CB
Date published: 2023-10-13
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