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. 787-7829
BrandRS PRO
£54.60
Each
Units
K 6mm 300mm +1100°C Stainless Steel Cable - IEC - -
RS Stock No. 621-2322
BrandRS PRO
£24.94
Each
Units
K 40 → 50mm - +1100°C 316 Stainless Steel Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 621-2300
BrandRS PRO
£23.75
Each
Units
K 22 → 30mm - +1100°C 316 Stainless Steel Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 290-5036
BrandRS PRO
£26.53
Each
Units
K 1/0.2mm 40mm +150°C Aluminium Foil Backing, Silicone Rubber Cable 1m IEC - -
RS Stock No. 158-626
BrandRS PRO
£8.03
Each
Units
K 7mm 1m +200°C Copper Cable 1m BS - -
RS Stock No. 219-4539
BrandRS PRO
£14.94
Each
Units
K 3mm 300mm +1100°C Stainless Steel Cable 1m IEC - -
RS Stock No. 334-2622
BrandRS PRO
£21.18
Each
Units
K 5mm 5mm +750°C 316L Stainless Steel Bare Wire Tail 2.5m RoHS Compliant 4 s -
RS Stock No. 621-2316
BrandRS PRO
£24.02
Each
Units
K 30 → 40mm - +1100°C 316 Stainless Steel Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 455-4292
BrandRS PRO
£19.79
Each
Units
J 3mm 150mm +760°C - Cable 1m IEC - -
RS Stock No. 397-1494
BrandRS PRO
£14.85
Each
Units
K 3mm 250mm +1100°C Stainless Steel Miniature Plug - IEC - -
RS Stock No. 181-7279
BrandRS PRO
£41.85
Each
Units
K 3mm 250mm +1100°C Stainless Steel Miniature Plug - IEC - SYSCAL
RS Stock No. 433-4313
BrandRS PRO
£35.81
Each
Units
K 0.25mm 300mm +120°C - Miniature Plug 300mm RoHS Compliant 0.7 s -
RS Stock No. 621-2489
BrandRS PRO
£52.14
Each
Units
K 6mm 625mm +1100°C 310 Stainless Steel Connection Head - RoHS Compliant 20 s -
RS Stock No. 872-2616
BrandRS PRO
£8.25
Each
Units
K 1/0.3mm - +350°C Glass Fibre Miniature Plug 1m IEC - -
RS Stock No. 824-0635
BrandRS PRO
£27.46
Each
Units
K 1mm 100mm +800°C Inconel 600 Bare Wire Tail 1m RoHS Compliant 7 s -
RS Stock No. 219-4674
BrandRS PRO
£25.40
Each
Units
T 1.6mm - +250°C Stainless Steel - 1.5m IEC - -
RS Stock No. 787-7696
BrandRS PRO
£19.24
Each
Units
K 1mm 150mm +1100°C Stainless Steel Cable 1m IEC - -
RS Stock No. 824-0679
BrandRS PRO
£30.19
Each
Units
K 3mm 250mm +1200°C Inconel 600, Stainless Steel Cable 1m RoHS Compliant 2.1 s -
RS Stock No. 814-0153
BrandRS PRO
£6.39
Each
Units
T 0.2 mm, 0.3 mm 2m +250°C - Miniature Plug 2m ANSI - -
RS Stock No. 621-2142
BrandRS PRO
£4.16
Each
Units
J 2mm - +250°C Teflon PTFE Cable 1m RoHS Compliant 5 s -
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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 ...