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 Termination Type Cable Length Standards Met Response Time Calibrated
RS Stock No. 363-0250
BrandRS PRO
£5.74
Each
Units
K 1/0.2mm 1m +250°C - Miniature Plug 1m IEC - -
RS Stock No. 621-2170
BrandRS PRO
£6.22
Each
Units
K 0.3mm - +400°C - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 621-2158
BrandRS PRO
£2.828
Each (In a Pack of 5)
Units
K 2mm - +250°C Teflon PTFE Cable 1m RoHS Compliant 5 s -
RS Stock No. 397-1264
BrandRS PRO
£20.46
Each
Units
K 3mm 150mm +1100°C Stainless Steel Cable 1m IEC - -
RS Stock No. 409-4908
BrandRS PRO
£5.42
Each
Units
K 0.2mm - +250°C Nickel Aluminium, Nickel Chrome Miniature Plug 1m RoHS Compliant 0.1 s -
RS Stock No. 621-2271
BrandRS PRO
£14.04
Each
Units
K 6mm - +350°C Stainless Steel Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 397-1488
BrandRS PRO
£16.72
Each
Units
K 3mm 150mm +1100°C Stainless Steel Miniature Plug - IEC - -
RS Stock No. 181-7278
BrandRS PRO
£43.72
Each
Units
K 3mm 150mm +1100°C Stainless Steel Miniature Plug - IEC - SYSCAL
RS Stock No. 363-0294
BrandRS PRO
£8.36
Each
Units
K 1/0.2mm 2m +350°C - Miniature Plug 2m IEC - -
RS Stock No. 397-1236
BrandRS PRO
£18.98
Each
Units
K 1.5mm 150mm +1100°C Stainless Steel Cable 1m IEC - -
RS Stock No. 409-4920
BrandRS PRO
£6.26
Each
Units
K 1.2mm - +450°C Nickel Aluminium, Nickel Chrome Miniature Plug 1m IEC 0.1 s -
RS Stock No. 911-9462
BrandRS PRO
£90.26
Each
Units
K 1.2mm - +450°C Nickel Aluminium, Nickel Chrome Miniature Plug 1m IEC 0.1 s SYSCAL
RS Stock No. 219-4725
BrandRS PRO
£15.66
Each
Units
J 4.5mm 150mm +350°C Stainless Steel Cable 2m IEC - -
RS Stock No. 259-328
BrandRS PRO
£18.47
Each
Units
J 6mm 170mm +350°C Stainless Steel Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 621-2237
BrandRS PRO
£14.45
Each
Units
J 0.2mm - +350°C Stainless Steel Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 621-2287
BrandRS PRO
£10.10
Each
Units
K 6.35mm - +200°C Copper Cable 1m RoHS Compliant 0.7 s -
RS Stock No. 479-1788
BrandRS PRO
£7.67
Each
Units
K 1/0.3mm 3m +250°C - Miniature Plug 3m RoHS Compliant 0.1 s -
RS Stock No. 228-7445
BrandRS PRO
£13.86
Each
Units
K 1.5mm 150mm +1100°C Stainless Steel Cable 100mm IEC - -
RS Stock No. 397-1589
BrandRS PRO
£14.53
Each
Units
K 0.075mm - +250°C - Cable 1m ANSI - -
RS Stock No. 762-1128
BrandRS PRO
£17.82
Each
Units
K 4.5mm 150mm +350°C Stainless Steel Cable 2m IEC - -
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Description:
Thermocouples, bayonet adaptors, compensating and extension cables and connectors.,These BS1843 products are being phased out, having been replaced with a new colour code standard BS4937 Part 30 1993 (IEC 584-3 1989 modified for international use). System Calibration is available on selected probes and includes the full charge of the instrument ...
The RS PRO IEC J type crocodile clip ...
Description:
The RS PRO IEC J type crocodile clip thermocouple has fibreglass stainless steel over braided PFA Teflon cable. The cable length is 1m and is fitted with a miniature plug. The temperature is between -50°C and 250°C. • Grounded measuring junction.
Stainless Steel Penetration Probe with a pointed tip. ...
Description:
Stainless Steel Penetration Probe with a pointed tip. 316 Stainless Steel Penetration Probe with a pointed tip for liquid and semi-solid temperature measurement. Comprising of a handle, 2 metre coiled cable and a mini plug. Type: K Probe Length: 300mm Diameter: 3.3mm Maximum Temperature 400°C Supplied with Handle, 2m Coiled ...
PVC insulated type K & N probe and ...
Description:
PVC insulated type K & N probe and compression glands. Higher reliability and stability offered from our RS Pro range of thermocouples. • 300mm x 3mm probe • K probe with stainless steel sheath • N with Nicrosil sheath • Probe fitted with an M8 x 1.0 adaptor for installation ...