Need a quote or advice?

Contact one of our experienced engineers

Phone Icon 01895 252222
International: +44 1895 2522222
France Flag France Germany Flag Germany Spain Flag Spain Netherlands Flag Netherlands Italy Flag Italy Hungary Flag Hungary US Flag United States Australia Flag Australia
Call TC
TC Ltd for Temperature Measurement & Control
You are here → Home > Temperature Sensors > Thermocouples > Mineral Insulated > Thermocouple Extensions

Mineral Insulated Thermocouple Extensions

Thermocouple Extensions with Cable or Connectors

Send Enquiry Request Info Data Sheet

Related Products

Thermocouple Connectors
  • Steel sheathed mineral Insulated thermocouple extension cables
  • High integrity construction suited to arduous operating conditions at temperatures from -200°C to +1250°C
  • High insulation resistance
  • The cable used to manufacture these assemblies conforms to BS EN 61515: 2016 / IEC 61515: 2016 and BS EN 60584 class 2, other tolerances are available on request
  • Available in K, T, J and, N with sheath diameters from 1.5mm to 6.35mm and lengths from a few millimetres to 200 metres or more dependent on the sheath diameter selected
  • Sheaths can generally be bent, twisted and flattened to suit particular installations without impairing performance
  • Available with either pot seal terminations (with tails or cable) or with a choice of connector terminations

Thermocouple Enquiry Form

1a. Thermocouple Type
1b. Tolerance Class
2. Sheath Material
3. Sheath Diameter
4. Extension Sheath Length

 mm
5. Style of Sensor
6. Pot Seal 1

Illustration Select
Internal seal with bare conductors (temporary seal)
Crimp on St./St. Pot Seal
(sheath diameters up to 3mm)
Pot Seal with Anti Chafe Spring
(sheath diameters up to 3mm)
Crimp on St./St. Pot Seal
(sheath diameters 3mm to 8mm)
Pot Seal with Anti Chafe Spring
(sheath diameters 3mm to 8mm)

End Seal Temperature Rating:
7. Pot Seal 2

Illustration Select
Internal seal with bare conductors (temporary seal)
Crimp on St./St. Pot Seal
(sheath diameters up to 3mm)
Pot Seal with Anti Chafe Spring
(sheath diameters up to 3mm)
Crimp on St./St. Pot Seal
(sheath diameters 3mm to 8mm)
Pot Seal with Anti Chafe Spring
(sheath diameters 3mm to 8mm)

End Seal Temperature Rating:
8. Extension Leads

Illustration Select
PFA 1/0.5mm
(rated to 250ºC)
PFA 7/0.2mm
(rated to 250ºC)
PFA with Screen
(rated to 250ºC)
Fibreglass 7/0.2mm
(rated to 480ºC)
Fibreglass with Steel Overbraid
(rated to 480ºC)
Colour Codes available to IEC 60751
Please enter Cable length in metres

 mtrs
9. Connector 1

Illustration Select
3P6 - Standard 2-pin Plug  
Standard Plug rated to 220ºC
Standard Plug rated to 300ºC
Standard Plug rated to 425ºC
Standard Plug rated to 600ºC
3P6M - Miniature Plug  
Miniature Plug rated to 220ºC
Miniature Plug rated to 300ºC
Miniature Plug rated to 425ºC
Miniature Plug rated to 600ºC

3P7 - Standard Socket

 
Standard Socket rated to 220ºC
Standard Socket rated to 300ºC
Standard Socket rated to 425ºC
Standard Socket rated to 600ºC
3P7M - Miniature Socket  
Miniature Socket rated to 220ºC
Miniature Socket rated to 300ºC
Miniature Socket rated to 425ºC
Miniature Socket rated to 600ºC
Illustration Select
3P6L - Standard 2-pin Plug
(loose fitted)		  
Standard Plug rated to 220ºC
Standard Plug rated to 300ºC
Standard Plug rated to 425ºC
Standard Plug rated to 600ºC
3P6M - Miniature Plug
(loose fitted)		  
Miniature Plug rated to 220ºC
Miniature Plug rated to 300ºC
Miniature Plug rated to 425ºC
Miniature Plug rated to 600ºC

3P7 - Standard Socket
(loose fitted)

 
Standard Socket rated to 220ºC
Standard Socket rated to 300ºC
Standard Socket rated to 425ºC
Standard Socket rated to 600ºC
3P7M - Miniature Socket
(loose fitted)		  
Miniature Socket rated to 220ºC
Miniature Socket rated to 300ºC
Miniature Socket rated to 425ºC
Miniature Socket rated to 600ºC
10. Connector 2

Illustration Select
3P6 - Standard 2-pin Plug  
Standard Plug rated to 220ºC
Standard Plug rated to 300ºC
Standard Plug rated to 425ºC
Standard Plug rated to 600ºC
3P6M - Miniature Plug  
Miniature Plug rated to 220ºC
Miniature Plug rated to 300ºC
Miniature Plug rated to 425ºC
Miniature Plug rated to 600ºC

3P7 - Standard Socket

 
Standard Socket rated to 220ºC
Standard Socket rated to 300ºC
Standard Socket rated to 425ºC
Standard Socket rated to 600ºC
3P7M - Miniature Socket  
Miniature Socket rated to 220ºC
Miniature Socket rated to 300ºC
Miniature Socket rated to 425ºC
Miniature Socket rated to 600ºC
Illustration Select
3P6L - Standard 2-pin Plug
(loose fitted)		  
Standard Plug rated to 220ºC
Standard Plug rated to 300ºC
Standard Plug rated to 425ºC
Standard Plug rated to 600ºC
3P6M - Miniature Plug
(loose fitted)		  
Miniature Plug rated to 220ºC
Miniature Plug rated to 300ºC
Miniature Plug rated to 425ºC
Miniature Plug rated to 600ºC

3P7 - Standard Socket
(loose fitted)

 
Standard Socket rated to 220ºC
Standard Socket rated to 300ºC
Standard Socket rated to 425ºC
Standard Socket rated to 600ºC
3P7M - Miniature Socket
(loose fitted)		  
Miniature Socket rated to 220ºC
Miniature Socket rated to 300ºC
Miniature Socket rated to 425ºC
Miniature Socket rated to 600ºC
11. Quantity Required

Contact Details

Company Name


Your Name


Title/Dept.


Email


Telephone


Additional Information

If your enquiry is for more than one style of sensor, please email us with your requirements or use the box below



Send Enquiry  

We will only use your email address to contact you. We will never give your email address to 3rd parties and we do not sell data on to any other company. We prefer to concentrate on making quality temperature related products. Our privacy policy can be viewed here.

Frequently Asked Questions

  • What is a thermocouple and how does it work?
    A thermocouple is a type of temperature sensor that generates a voltage when two different metals are joined at one end and exposed to a temperature difference between the "hot" junction (where the temperature is measured) and the "cold" junction (the reference point). This voltage is then measured to determine the temperature at the hot junction.
  • How do I choose the right thermocouple for my application?
    The ideal thermocouple depends on factors such as temperature range, accuracy, termination type, mounting requirements and environmental conditions. We offer a variety of thermocouples with different sheath materials, constructions, terminations, and temperature ratings to meet your needs. If you need specific advice, our engineers are happy to assist!
  • What is the maximum temperature rating of your thermocouples?
    Our thermocouples are designed to handle a wide range of temperatures with some mineral insulated thermocouples able to withstand temperatures up to 1400ºC and ceramic sheathed thermocouples going even higher to 1600ºC. Each product listing includes the maximum temperature rating, so you can choose the best thermocouple for your application.
1 Thermocouple Type Temperature Range (continuous) Temperature Range
(short term)
K Nickel Chromium vs
Nickel Aluminium		 0°C to +1100°C -180°C to +1350°C
T Copper vs Constantan -185°C to +300°C -250°C to +400°C
J Iron vs Constantan +20°C to +700°C -180°C to +750°C
N Nicrosil vs Nisil 0°C to +1100°C -270°C to +1300°C
Temperature ranges refer to the thermocouple type.
The temperature range of the sensor may deviate from the above,
please refer to the product description for more details
2 Sheath Material Max.
Temperature
Standard Sheath Materials
321

321 Stainless Steel

800°C
316L 316L Stainless Steel 800°C
310 310 Stainless Steel 1100°C
600 Inconel 600 1100°C
Specialized Sheath Materials
800 Incoloy 800 1100°C
114 Nicrotherm DTM 1250°C
* 5.5mm diameter is a thick wall heavy duty construction

Assemblies with pot seals are supplied with short tails as shown. However, where leads are several metres or more long, it is more suitable to have an overall sheathed cable. We recommend the following cables, which are 7/0.2mm, laid flat and overall sheathed constructions. Other cables are available, please contact us for details.