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 Calibrated Hazardous Area Certification Accuracy
RS Stock No. 363-0250
BrandRS PRO
€7.40
Each
units
K 1/0.2mm - +250°C - -75°C - Miniature Plug 1m IEC - - - -
RS Stock No. 397-1264
BrandRS PRO
€26.40
Each
units
K 3mm 150mm +1100°C Stainless Steel - - Cable 1m IEC - - - -
RS Stock No. 896-8395
BrandRS PRO
€18.66
Each
units
PT 100 5mm 50mm +100°C Stainless Steel - - Cable 1.5m - - - - -
RS Stock No. 285-633
BrandRS PRO
€77.04
Each
units
PT 100 6mm 200mm +450°C Stainless Steel - - Connection Head - - - - - -
RS Stock No. 813-834
BrandRS PRO
€33.68
Each
units
NTC - - +70°C - - - - - - - - - -
RS Stock No. 621-2170
BrandRS PRO
€6.93
Each
units
K 0.3mm 2m +400°C Glass Fibre - - Cable 2m RoHS Compliant 0.7 s - - -
RS Stock No. 362-9941
BrandRS PRO
€48.95
Each
units
PT 100 3mm 250mm +250°C Stainless Steel - - Cable 1m - - - - -
RS Stock No. 621-2265
BrandRS PRO
€16.56
Each
units
J 6mm 2m +350°C Stainless Steel - - Cable 2m RoHS Compliant 0.7 s - - -
RS Stock No. 181-7283
BrandRS PRO
€56.03
Each
units
K 1mm 500mm +750°C Stainless Steel - - Miniature Plug - IEC - SYSCAL - -
RS Stock No. 219-4674
BrandRS PRO
€30.00
Each
units
T 1.6mm 100mm +250°C Stainless Steel - - Cable 1.5m IEC - - - -
RS Stock No. 787-7769
BrandRS PRO
€22.03
Each
units
K 1mm 500mm +750°C Stainless Steel - - Miniature Plug - IEC - - - -
RS Stock No. 363-0294
BrandRS PRO
€10.80
Each
units
K 1/0.2mm 2m +350°C - - - Miniature Plug 2m IEC - - - -
RS Stock No. 363-0323
BrandRS PRO
€7.44
Each
units
K 1/0.2mm 1m +250°C - - - Miniature Plug 1m IEC - - - -
RS Stock No. 219-4725
BrandRS PRO
€19.25
Each
units
J 4.5mm 150mm +350°C Stainless Steel - - Cable 2m IEC - - - -
RS Stock No. 748-0807
Mfr. Part No.A86614
€6.86
Each
units
NTC, PT1000 - - +110°C - - - - - - - - - -
RS Stock No. 813-884
BrandRS PRO
€39.29
Each
units
PT 100 - - +70°C - - - - - - - - - -
RS Stock No. 409-4908
BrandRS PRO
€6.82
Each
units
K 0.2mm 1m +250°C Nickel Aluminium, Nickel Chrome - - Miniature Plug 1m RoHS Compliant 0.1 s - - -
RS Stock No. 327-4973
Mfr. Part No.902044/20-380-1003-1-8-250-104-26/000
BrandJumo
€122.07
Each
units
PT 100 8mm 250mm +270°C Stainless Steel - - Standard Plug - - - - - -
RS Stock No. 872-2802
BrandRS PRO
€25.89
Each
units
J 3.18mm 25mm +350°C Glass Fibre - - Cable 2m IEC - - - -
RS Stock No. 896-8415
BrandRS PRO
€53.33
Each
units
PT 100 5.7mm 120mm +250°C Stainless Steel - - Connection Head - - - - - -