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. 388-0427
Mfr. Part No.R7-901-OF
BrandReckmann
HK$943.69
Each
units
K 22mm 500mm +1370°C - - - Connection Head - - -
RS Stock No. 236-4277
BrandRS PRO
HK$274.66
Each
units
PT 100 6mm 250mm +250°C Stainless Steel - - Cable 1m - -
RS Stock No. 362-9840
BrandRS PRO
HK$23.41
Each
units
PT 100 2mm 2.3mm +500°C Platinum - - Solder - - 0.1 s
RS Stock No. 324-2471
BrandRS PRO
HK$639.58
Each
units
J 1.5mm 300mm +400°C 316 Stainless Steel - - Cable 2m RoHS Compliant 9 s
RS Stock No. 151-192
BrandRS PRO
HK$65.79
Each
units
K 1/0.3mm 2m +400°C - - - Cable 2m BS -
RS Stock No. 621-2439
BrandRS PRO
HK$1,371.19
Each
units
K 8mm 265mm +800°C 316L Stainless Steel - - Connection Head - RoHS Compliant 20 s
RS Stock No. 611-7801
BrandRS PRO
HK$28.26
Each
units
PT 100 2mm 5mm +500°C Platinum - - Solder - - 0.1 s
RS Stock No. 814-0143
BrandRS PRO
HK$95.18
Each
units
K 7/0.2mm 2m +250°C Nickel Aluminium, Nickel Chrome - - Miniature Plug 2m ANSI -
RS Stock No. 397-1589
BrandRS PRO
HK$180.43
Each
units
K 0.075mm 1m +250°C - - - Cable 1m ANSI -
RS Stock No. 847-1084
BrandRS PRO
HK$468.03
Each
units
K 0.5mm 500mm +1100°C Inconel - - Cable 100mm ANSI -
RS Stock No. 547-7792
BrandRS PRO
HK$937.49
Each
units
K 6mm 2m +250°C 316 Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 110-4462
BrandRS PRO
HK$277.75
Each
units
PT 100 2.8mm 15mm +350°C Glass Fibre - - Lead Wire 1m - -
RS Stock No. 548-8657
Mfr. Part No.902130/10-402-1001-1-6-300-254/391,
BrandJumo
HK$1,374.71
Each
units
PT 100 6mm 300mm +400°C Stainless Steel - - Connection Head - - -
RS Stock No. 344-1016
Mfr. Part No.330114-508
HK$990.59
Each
units
PT 100 6mm 200mm +450°C Stainless Steel - - Cable 2m - -
RS Stock No. 121-8016
Mfr. Part No.P0K1.232.6W.Y.007
HK$30.35
Each
units
PT 100 2mm 2.3mm +600°C - - - Solder - - 0.55 (Water) ms, 12 (Air) ms
RS Stock No. 621-2259
BrandRS PRO
HK$214.04
Each
units
J 0.2mm 2m +400°C Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 236-4261
BrandRS PRO
HK$442.16
Each
units
PT 100 6mm 150mm +250°C Stainless Steel - - Cable 1m - -
RS Stock No. 444-1247
BrandRS PRO
HK$404.98
Each
units
K 0.5mm 250mm +750°C Stainless Steel - - Cable 100mm IEC -
RS Stock No. 814-0156
BrandRS PRO
HK$97.92
Each
units
K 1/0.3mm 2m +350°C - - - Miniature Plug 2m ANSI -
RS Stock No. 621-2344
BrandRS PRO
HK$115.97
Each
units
J 6.35mm 1m +200°C - - - Cable 1m RoHS Compliant -