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. 621-2287
BrandRS PRO
SGD19.59
Each
units
K 6.35mm - +200°C Copper - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 621-2388
BrandRS PRO
SGD111.59
Each
units
J 6mm 200mm +700°C 316L Stainless Steel - Connection Head - RoHS Compliant 5 s
RS Stock No. 219-4387
BrandRS PRO
SGD32.22
Each
units
K 3mm 500mm +1100°C 316 Stainless Steel - Cable 100mm IEC -
RS Stock No. 363-0266
BrandRS PRO
SGD11.17
Each
units
T 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 621-2221
BrandRS PRO
SGD40.62
Each
units
K 6mm 175mm +1100°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 762-1124
BrandRS PRO
SGD32.05
Each
units
T 7/0.2mm 5m +250°C - - Miniature Plug 5m IEC -
RS Stock No. 847-1031
BrandRS PRO
SGD39.98
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 219-4393
BrandRS PRO
SGD40.95
Each
units
K 3mm 1m +1100°C 316 Stainless Steel - Cable 100mm IEC -
RS Stock No. 787-7850
BrandRS PRO
SGD29.47
Each
units
K 4.5mm 250mm +1100°C Stainless Steel - Cable 100mm IEC -
RS Stock No. 621-2300
BrandRS PRO
SGD46.08
Each
units
K 22 → 30mm 2m +1100°C 316 Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 123-6330
BrandRS PRO
SGD13.44
Each
units
T 7/0.2mm - +250°C - - Miniature Plug 1m IEC -
RS Stock No. 123-6328
BrandRS PRO
SGD9.20
Each
units
T 1/0.3mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 621-2322
BrandRS PRO
SGD48.38
Each
units
K 40 → 50mm 2m +1100°C 316 Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 847-1025
BrandRS PRO
SGD36.84
Each
units
K 1.5mm 150mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 891-9090
BrandRS PRO
SGD37.25
Each
units
T 1mm 150mm +400°C 316 Stainless Steel - Cable 100mm IEC -
RS Stock No. 847-9678
BrandRS PRO
SGD12.96
Each
units
K - 1m +250°C - - Cable 1m ANSI -
RS Stock No. 433-4436
BrandRS PRO
SGD188.20
Each
units
K 4.5mm 300mm +1200°C Stainless Steel - Miniature Plug 3m RoHS Compliant 0.7 s
RS Stock No. 872-2698
BrandRS PRO
SGD57.68
Each
units
J 4.5mm 300mm +1100°C Stainless Steel - Standard Plug - IEC -
RS Stock No. 455-4286
BrandRS PRO
SGD39.65
Each
units
J 1.5mm 250mm +760°C Nickel Aluminium, Nickel Chrome - Cable 1m IEC -
RS Stock No. 872-2799
BrandRS PRO
SGD44.89
Each
units
K 1/0.508mm 5m +350°C Glass Fibre - Cable 5m IEC -
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