Thermocouples

A Thermocouple is a device which measures temperature. It is made up of two wires of different metals that, when joined together, create an electrical junction. When the temperature changes at this junction it creates a voltage which can be interpreted to read the temperature. This is also known as the Seebeck effect. You can read more about these tools in our bespoke Thermocouples Guide

Types of thermocouples

There are various types of thermocouples, each with different characteristics, such as temperature range and their robustness. Each thermocouple is defined by a letter such as “K”. Common types include J, K, L and T. The letters refer to the type of materials used and therefore the temperature they are usable at. For example, type J is iron and copper-nickel and is useable from around 0°C to 816°C, depending on other characteristics. Some thermocouples come with an additional sheath which provides protection to prolong its life.

Thermocouples are ideal tools for temperature measurement as they are robust yet affordable solutions.

What are Thermocouples used for?

  • Thermostats
  • Hospital thermometers
  • Vehicle diagnostics
  • Boiler/heating sensors
  • Oven safety features
  • Food thermometers
  • Industrial probes/sensor

...
Read more Read less

Filters

Viewing 1 - 20 of 746 products
Results per page
Description Price Thermocouple Type Probe Diameter Probe Length Maximum Temperature Sensed Probe Material Minimum Temperature Sensed Termination Type Cable Length Standards Met Response Time
RS Stock No. 363-0250
BrandRS PRO
$21.26
Each
units
K 1/0.2mm - +250°C - -75°C Miniature Plug 1m IEC -
RS Stock No. 219-4725
BrandRS PRO
$48.78
Each
units
J 4.5mm 150mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 409-4920
BrandRS PRO
$19.05
Each
units
K 1.2mm 1m +450°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m IEC 0.1 s
RS Stock No. 621-2271
BrandRS PRO
$47.73
Each
units
K 6mm 2m +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 621-2170
BrandRS PRO
$13.32
Each
units
K 0.3mm - +400°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 409-4908
BrandRS PRO
$15.97
Each
units
K 0.2mm 1m +250°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m RoHS Compliant 0.1 s
RS Stock No. 397-1264
BrandRS PRO
$56.80
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 824-0631
BrandRS PRO
$56.84
Each
units
K 1.5mm 1000mm +800°C Inconel 600 - Miniature Plug - RoHS Compliant <2 s
RS Stock No. 814-0137
BrandRS PRO
$12.98
Each
units
K 1/0.2mm 1m +250°C - - Miniature Plug 1m ANSI -
RS Stock No. 479-1788
BrandRS PRO
$28.18
Each
units
K 1/0.3mm 3m +250°C - - Miniature Plug 3m RoHS Compliant 0.1 s
RS Stock No. 472-3319
Mfr. Part No.2098714
BrandFluke
$220.00
Each
units
K 4.8mm 203.2mm +816°C - - Miniature Plug - - -
RS Stock No. 363-0294
BrandRS PRO
$30.25
Each
units
K 1/0.2mm 2m +350°C - - Miniature Plug 2m IEC Fast
RS Stock No. 334-2622
BrandRS PRO
$45.36
Each
units
K 5mm 5mm +750°C 316L Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 397-1258
BrandRS PRO
$41.63
Each
units
K 1.5mm 250mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 824-0679
BrandRS PRO
$69.38
Each
units
K 3mm 250mm +1200°C Inconel 600, Stainless Steel - Cable 1m RoHS Compliant 2.1 s
RS Stock No. 621-2316
BrandRS PRO
$60.25
Each
units
K 30 → 40mm 2m +1100°C 316 Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 621-2287
BrandRS PRO
$25.82
Each
units
K 6.35mm - +200°C Copper - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 397-1236
BrandRS PRO
$41.96
Each
units
K 1.5mm 150mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 621-2237
BrandRS PRO
$36.28
Each
units
J 0.2mm - +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 824-0635
BrandRS PRO
$58.81
Each
units
K 1mm 100mm +800°C Inconel 600 - Cable 1m RoHS Compliant 7 s
Related Products
These temperature probe assemblies are all constructed using ...
Description:
These temperature probe assemblies are all constructed using a stainless steel sheath containing either a J or K type thermocouple or a P100 RTD sensor element The aluminium head contains a programmable 4-20mA transmitter which, although pre-programmed for the standard ...
A copper/copper-nickel thermocouple housed in a 16 mm ...
Description:
A copper/copper-nickel thermocouple housed in a 16 mm dia. stainless steel probe. The body is brazed to the probe and the P.T.F.E. insulated cable passes through a waterproof entry. The probe may be steam sterilised. The thermocouple is not isolated ...
From RS Pro an IEC standard Type K ...
Description:
From RS Pro an IEC standard Type K thermocouple temperature sensor designed for taking surface temperature measurements The thermocouple lead is made from twin-twist wire with a durable PTFE insulation. One end of the lead is terminated with a miniature ...
From RS Pro a range of Type J ...
Description:
From RS Pro a range of Type J thermocouple temperature sensors that conform to IEC 60584 standards These Type J thermocouples have a durable design with glass fibre insulated wires surrounded by a stainless steel braid and a probe enclosed ...