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. 408-1069
Mfr. Part No.89 750 150
BrandCrouzet
HK$951.11
Each
units
- - - +40°C - - - Connection Head - - -
RS Stock No. 293-8480
BrandRS PRO
HK$514.32
Each
units
PT 100 1.6mm 8mm +600°C Platinum - - Solder - - 1 m/s
RS Stock No. 285-633
BrandRS PRO
HK$785.39
Each
units
PT 100 6mm 200mm +450°C Stainless Steel - - Connection Head - - -
RS Stock No. 409-4920
BrandRS PRO
HK$108.26
Each
units
K 1.2mm 1m +450°C Nickel Aluminium, Nickel Chrome - - Miniature Plug 1m IEC 0.1 s
RS Stock No. 158-985
BrandRS PRO
HK$409.79
Each
units
PT 100 3mm 100mm +200°C Stainless Steel - - Lead Wire 1m - -
RS Stock No. 621-2287
BrandRS PRO
HK$122.12
Each
units
K 6.35mm 1m +200°C Copper - - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 847-9722
BrandRS PRO
HK$148.04
Each
units
T - 5m +250°C - - - Miniature Plug 5m ANSI -
RS Stock No. 259-328
BrandRS PRO
HK$223.27
Each
units
J 6mm 170mm +350°C Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 410-7846
Mfr. Part No.FC766F/3
HK$387.31
Each
units
K - 3m - - - - Miniature Plug - - -
RS Stock No. 219-4725
BrandRS PRO
HK$195.39
Each
units
J 4.5mm 150mm +350°C Stainless Steel - - Cable 2m IEC -
RS Stock No. 621-2209
BrandRS PRO
HK$87.71
Each
units
T 0.3mm 2m +350°C - - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 479-1788
BrandRS PRO
HK$116.14
Each
units
K 1/0.3mm 3m +250°C - - - Miniature Plug 3m RoHS Compliant 0.1 s
RS Stock No. 438-8477
Mfr. Part No.NTC015WH01
BrandCarel
HK$148.13
Each
units
NTC, PT1000 - - - - - - - 1.5m - -
RS Stock No. 814-0153
BrandRS PRO
HK$94.98
Each
units
T 0.2 mm, 0.3mm 2m +250°C - - - Miniature Plug 2m ANSI -
RS Stock No. 433-4313
BrandRS PRO
HK$433.83
Each
units
K 0.25mm 300mm +120°C - - - Miniature Plug 300mm RoHS Compliant 0.7 s
RS Stock No. 455-3968
BrandRS PRO
HK$594.76
Each
units
PT 100 6mm 50mm +200°C Stainless Steel - - Cable 2m - -
RS Stock No. 621-2451
BrandRS PRO
HK$1,568.62
Each
units
K 8mm 515mm +800°C 316L Stainless Steel - - Connection Head - RoHS Compliant 20 s
RS Stock No. 219-4365
BrandRS PRO
HK$208.01
Each
units
K 1.5mm 500mm +1100°C 316 Stainless Steel - - Cable 100mm IEC -
RS Stock No. 237-1657
BrandRS PRO
HK$275.22
Each
units
PT 100 5mm 35mm +250°C Platinum - - Lead Wire 450mm - -
RS Stock No. 158-4385
Mfr. Part No.902040/10-387-1003-1-7,5-29-121-20/000
BrandJumo
HK$384.81
Each
units
PT 100 7.5mm 29mm +270°C Stainless Steel - - Standard Plug - - 6 s (Water)