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. 621-2316
BrandRS PRO
$61.15
Each
units
K 30 → 40mm 2m +1100°C 316 Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 824-0679
BrandRS PRO
$70.42
Each
units
K 3mm 250mm +1200°C Inconel 600, Stainless Steel - Cable 1m RoHS Compliant 2.1 s
RS Stock No. 621-2287
BrandRS PRO
$26.21
Each
units
K 6.35mm - +200°C Copper - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 397-1236
BrandRS PRO
$42.95
Each
units
K 1.5mm 150mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 362-9941
BrandRS PRO
$90.13
Each
units
PT 100 3mm 250mm +250°C Stainless Steel - Cable 1m - -
RS Stock No. 824-0635
BrandRS PRO
$59.71
Each
units
K 1mm 100mm +800°C Inconel 600 - Cable 1m RoHS Compliant 7 s
RS Stock No. 621-2237
BrandRS PRO
$36.82
Each
units
J 0.2mm - +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 237-1613
BrandRS PRO
$52.69
Each
units
PT 100 6mm 35mm +250°C Stainless Steel - Lead Wire 1m - -
RS Stock No. 362-9913
BrandRS PRO
$7.73
Each
units
PT 1000 2mm 10mm +500°C Platinum - Solder - - 0.1 s
RS Stock No. 285-661
BrandRS PRO
$128.01
Each
units
PT 100 13mm 40mm +150°C Aluminium Foil Backing, Silicone Rubber - Lead Wire 2m - -
RS Stock No. 814-0147
BrandRS PRO
$14.99
Each
units
K 1/0.3mm 1m +350°C - - Miniature Plug 1m ANSI -
RS Stock No. 373-0372
BrandRS PRO
$65.45
Each
units
PT 100 6mm 100mm +200°C Stainless Steel - Cable 2m - -
RS Stock No. 762-1134
BrandRS PRO
$63.67
Each
units
PT 100 3mm 25mm +200°C Stainless Steel - Lead Wire 1m - -
RS Stock No. 762-1128
BrandRS PRO
$59.22
Each
units
K 4.5mm 150mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 847-1141
BrandRS PRO
$32.97
Each
units
K 1.5mm 250mm +1100°C Stainless Steel - Cable 100mm ANSI -
RS Stock No. 813-806
BrandRS PRO
$30.68
Each
units
PT 100 - - +60°C - - - - - -
RS Stock No. 334-2638
BrandRS PRO
$36.05
Each
units
J 5mm 20mm +600°C 316L Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 847-1053
BrandRS PRO
$51.56
Each
units
K 6mm 150mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 847-9681
BrandRS PRO
$14.07
Each
units
T 1/0.3mm 1m +250°C - - Cable 1m ANSI -
RS Stock No. 237-1663
BrandRS PRO
$59.14
Each
units
PT 100 4mm 150mm +250°C Stainless Steel - Lead Wire 1m - -