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

...
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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. 363-0323
BrandRS PRO
$23.99
Each
units
K 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 110-4472
BrandRS PRO
$45.54
Each
units
K - - +220°C - - Standard Plug 2m ANSI, RoHS Compliant -
RS Stock No. 824-0675
BrandRS PRO
$69.52
Each
units
K 3mm 150mm +1200°C Inconel 600, Stainless Steel - Cable 1m RoHS Compliant 2.1 s
RS Stock No. 824-0629
BrandRS PRO
$52.50
Each
units
K 1.5mm 250mm +800°C Inconel 600 - Miniature Plug - RoHS Compliant <2 s
RS Stock No. 363-0317
BrandRS PRO
$13.35
Each
units
J 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 824-0559
BrandRS PRO
$54.27
Each
units
K 4.5mm 150mm +1200°C 310 Stainless Steel - Standard Plug - RoHS Compliant 3 s
RS Stock No. 787-7706
BrandRS PRO
$54.42
Each
units
K 1mm 250mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 872-2806
BrandRS PRO
$66.86
Each
units
J 3.18mm 40mm +350°C Glass Fibre - Cable 2m IEC -
RS Stock No. 847-9700
BrandRS PRO
$29.59
Each
units
K 1/0.3mm 5m +250°C - - Cable 5m ANSI -
RS Stock No. 787-7816
BrandRS PRO
$86.80
Each
units
K 6mm 200mm +1100°C Stainless Steel - Cable - IEC -
RS Stock No. 621-2316
BrandRS PRO
$66.28
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
$28.40
Each
units
K 6.35mm - +200°C Copper - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 621-2388
BrandRS PRO
$156.95
Each
units
J 6mm 200mm +700°C 316L Stainless Steel - Connection Head - RoHS Compliant 5 s
RS Stock No. 219-4652
BrandRS PRO
$80.71
Each
units
N 3mm 300mm +1300°C Nicrosil Alloy - Cable 1m IEC -
RS Stock No. 621-2489
BrandRS PRO
$122.83
Each
units
K 6mm 625mm +1100°C 310 Stainless Steel - Connection Head - RoHS Compliant 20 s
RS Stock No. 787-7804
BrandRS PRO
$115.57
Each
units
K 6mm 100mm +1100°C Stainless Steel - Cable 100mm IEC -
RS Stock No. 824-0685
BrandRS PRO
$94.23
Each
units
K 3mm 1.5m +1200°C Inconel 600, Stainless Steel - Cable 1m RoHS Compliant 2.1 s
RS Stock No. 847-9675
BrandRS PRO
$20.43
Each
units
K 1/0.3mm 1m +250°C - - Cable 1m ANSI -
RS Stock No. 872-2565
BrandRS PRO
$56.23
Each
units
K 4.76mm 100mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 110-4468
BrandRS PRO
$55.39
Each
units
K - 2m +220°C - - Miniature Plug 2m IEC, RoHS Compliant -
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