Thermocouples

A thermocouple is essentially a temperature sensor (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 the 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 is a wide range of thermocouples available, each with different characteristics, such as temperature range and their robustness. Each thermocouple is defined by a letter such as K-Type. 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 insulates the wires to prolong their life.

Thermocouples are ideal tools for measurement of high temperatures and are a robust yet affordable solution.

What are Thermocouples used for?

  • Thermostats
  • Hospital thermometers
  • Vehicle diagnostics
  • Boiler/heating sensors
  • Oven safety features
  • Food thermometers
  • Industrial probe 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. 219-4545
BrandRS PRO
$36.96
Each
units
K - 50mm +100°C - - Miniature Plug 2m IEC -
RS Stock No. 158-626
BrandRS PRO
$25.59
Each
units
K 7mm 1m +200°C Copper - Cable 1m BS -
RS Stock No. 363-0266
BrandRS PRO
$15.72
Each
units
T 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 611-7873
BrandRS PRO
$53.70
Each
units
PT 100 1.5mm 8mm +650°C Platinum - Solder - - 0.4 s
RS Stock No. 621-2322
BrandRS PRO
$54.21
Each
units
K 40 → 50mm 2m +1100°C 316 Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 236-4261
BrandRS PRO
$87.50
Each
units
PT 100 6mm 150mm +250°C Stainless Steel - Cable 1m - -
RS Stock No. 457-3653
BrandRS PRO
$41.25
Each
units
PT 1000 6mm 35mm +100°C Stainless Steel - Cable 1m - -
RS Stock No. 621-2221
BrandRS PRO
$44.01
Each
units
K 6mm 175mm +1100°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 762-1137
BrandRS PRO
$138.70
Each
units
PT 100 13mm 40mm +150°C Aluminium Foil Backing, Silicone Rubber - Lead Wire 5m - -
RS Stock No. 433-4379
BrandRS PRO
$187.89
Each
units
K 3mm 70mm +700°C Stainless Steel - Miniature Plug 300mm RoHS Compliant 0.7 s
RS Stock No. 847-1132
BrandRS PRO
$27.06
Each
units
K 1.5mm 150mm +1100°C Stainless Steel - Cable 100mm ANSI -
RS Stock No. 847-9675
BrandRS PRO
$15.38
Each
units
K 1/0.3mm 1m +250°C - - Cable 1m ANSI -
RS Stock No. 219-4539
BrandRS PRO
$33.47
Each
units
K 3mm 300mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 813-890
BrandRS PRO
$60.01
Each
units
PT 100 - - +110 °C, +40°C - - - - - -
RS Stock No. 290-5036
BrandRS PRO
$56.81
Each
units
K 1/0.2mm 40mm +150°C Aluminium Foil Backing, Silicone Rubber - Cable 1m IEC -
RS Stock No. 813-878
BrandRS PRO
$49.59
Each
units
PT 100 - - +70°C - - - - - -
RS Stock No. 236-4283
BrandRS PRO
$229.00
Each
units
PT 100 12.7mm 75mm +150°C Stainless Steel - Cable Gland - - -
RS Stock No. 787-7765
BrandRS PRO
$29.31
Each
units
K 1mm 250mm +750°C Stainless Steel - Miniature Plug - IEC -
RS Stock No. 228-7445
BrandRS PRO
$30.13
Each
units
K 1.5mm 150mm +1100°C Stainless Steel - Cable 100mm IEC -
RS Stock No. 787-7813
BrandRS PRO
$114.50
Each
units
K 6mm 150mm +1100°C Stainless Steel - Cable - IEC -