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 815 products
Results per page
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
£6.23
Each
Units
K 0.3mm - +400°C - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 621-2158
BrandRS PRO
£2.824
Each (In a Pack of 5)
Units
K 2mm 1m +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 1m +250°C Nickel Aluminium, Nickel Chrome Miniature Plug 1m RoHS Compliant 0.1 s -
RS Stock No. 621-2271
BrandRS PRO
£14.02
Each
Units
K 6mm 2m +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. 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. 409-4920
BrandRS PRO
£6.26
Each
Units
K 1.2mm 1m +450°C Nickel Aluminium, Nickel Chrome Miniature Plug 1m IEC 0.1 s -
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
£18.43
Each
Units
J 6mm 170mm +350°C Stainless Steel Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 621-2237
BrandRS PRO
£14.44
Each
Units
J 0.2mm - +350°C Stainless Steel Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 621-2287
BrandRS PRO
£10.08
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 1m +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 - -
Related Products
Bayonet cap: 2m of wire fitted with 170mm ...
Description:
Bayonet cap: 2m of wire fitted with 170mm spring cable protection, adjustable fixing cap and male bayonet adaptor. Type J (Fe/Con) general purpose Bayonet Thermocouple Suitable for the plastics industry2 metres long overall6.0mm diameter tip and spring Adjustable single slot bayonet cap (11.4mm inside diameter)Optional bayonet adapters to suit (see ...
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 temperature range of the sensor can be changed by the ...
1.5 or 3.0mm diameter versions with insulated hot ...
Description:
1.5 or 3.0mm diameter versions with insulated hot junction, which can be used in many applications and processes due to its high flexibility. Mineral insulated type "K" thermocouple310 stainless steel sheath Probe temperature range: -40 ºC to +1100º CStandard plug termination (200 ºC)Conforms to ANSI specification.
Mineral-insulated thermocouples are made of a flexible, thin-walled ...
Description:
Mineral-insulated thermocouples are made of a flexible, thin-walled sheath cable in which the thermowires are embedded in compressed fire-resistant magnesium oxide. The good thermal transfer between the sheath and the thermocouple enables short response times (t0.5 as of 0.15 s) and excellent measuring accuracy. The vibration-resistant construction guarantees a long ...