Thermocouples

A thermocouple is essentially a temperature sensor (a device that 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 that 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 that insulate the wires to prolong their life.Thermocouples are ideal tools for the measurement of high temperatures and are a robust yet affordable solution.What are Thermocouples used for?ThermostatsHospital thermometersVehicle diagnosticsBoiler/heating sensorsOven safety featuresFood thermometersIndustrial probe sensor


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Description Price Thermocouple Type Probe Diameter Probe Length Maximum Temperature Sensed Probe Material Minimum Temperature Sensed Series Termination Type Cable Length Standards Met Response Time
RS Stock No. 334-2638
BrandRS PRO
$50.04
Each
units
J 5mm 20mm +600°C 316L Stainless Steel - - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 813-806
BrandRS PRO
$36.14
Each
units
NTC - - +60°C - - - - - - -
RS Stock No. 847-1053
BrandRS PRO
$57.50
Each
units
K 6mm 150mm +1100°C Stainless Steel - - Cable 1m ANSI -
RS Stock No. 259-334
BrandRS PRO
$59.62
Each
units
K 6mm 170mm +400°C Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 158-913
BrandRS PRO
$10.302
Each (In a Pack of 5)
units
K 1/0.2mm 1m +250°C - - - Cable 1m BS -
RS Stock No. 611-7788
BrandRS PRO
$13.79
Each
units
PT 100 - 5mm +500°C Platinum - - Solder - - 0.1 s
RS Stock No. 362-9935
BrandRS PRO
$87.24
Each
units
PT 100 3mm 150mm +250°C Stainless Steel - - Cable 1m - -
RS Stock No. 237-1663
BrandRS PRO
$66.17
Each
units
PT 100 4mm 150mm +250°C Stainless Steel - - Lead Wire 1m - -
RS Stock No. 847-9681
BrandRS PRO
$15.66
Each
units
T 1/0.3mm 1m +250°C - - - Cable 1m ANSI -
RS Stock No. 814-0162
BrandRS PRO
$12.70
Each
units
PT 100 1.2mm - +500°C - - - Solder - RoHS Compliant -
RS Stock No. 621-2209
BrandRS PRO
$20.21
Each
units
T 0.3mm 2m +350°C - - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 611-7801
BrandRS PRO
$9.75
Each
units
PT 100 2mm 5mm +500°C Platinum - - Solder - - 0.1 s
RS Stock No. 376-1477
BrandRS PRO
$37.80
Each
units
PT 100 - - +60°C - - - - - - -
RS Stock No. 611-7839
BrandRS PRO
$30.60
Each
units
PT 100 1.5mm 15mm +650°C Platinum - - Solder - - 0.4 s
RS Stock No. 547-7297
Mfr. Part No.D 04718
BrandCorrege
$68.30
Each
units
PT 1000 6mm 35mm +100°C - - - Cable 2m - -
RS Stock No. 123-6328
BrandRS PRO
$11.34
Each
units
T 1/0.3mm 1m +250°C - - - Miniature Plug 1m IEC -
RS Stock No. 809-1010
Mfr. Part No.NTC030HP00
BrandCarel
$26.06
Each
units
NTC, PT1000 - - - - - - - 3m - -
RS Stock No. 621-2120
BrandRS PRO
$286.20
Each
units
T 4mm 250mm +200°C Stainless Steel - - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 787-7804
BrandRS PRO
$117.72
Each
units
K 6mm 100mm +1100°C Stainless Steel - - Cable 100mm IEC -
RS Stock No. 621-2265
BrandRS PRO
$51.15
Each
units
J 6mm 2m +350°C Stainless Steel - - Cable 2m RoHS Compliant 0.7 s