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 Termination Type Cable Length Standards Met Response Time Accessory Type
RS Stock No. 397-1258
BrandRS PRO
HK$228.90
Each
units
K 1.5mm 250mm +1100°C Stainless Steel - Cable 1m IEC - -
RS Stock No. 621-2170
BrandRS PRO
HK$73.04
Each
units
K 0.3mm - +400°C - - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 362-9941
BrandRS PRO
HK$486.05
Each
units
PT 100 3mm 250mm +250°C Stainless Steel - Cable 1m - - -
RS Stock No. 608-4486
Mfr. Part No.902020/25-402-1001-1-6-100-104/395,
BrandJumo
HK$1,767.24
Each
units
PT 100 6mm 100mm +400°C Stainless Steel - Connection Head - - 50 (Water) s -
RS Stock No. 548-8720
Mfr. Part No.902020/25-402-1001-1-6-100-104/395,
BrandJumo
HK$1,055.97
Each
units
PT 100 6mm 100mm +400°C Stainless Steel - Connection Head - - 50 (Water) s -
RS Stock No. 363-0250
BrandRS PRO
HK$70.00
Each
units
K 1/0.2mm - +250°C - -75°C Miniature Plug 1m IEC - -
RS Stock No. 409-4908
BrandRS PRO
HK$65.00
Each
units
K 0.2mm 1m +250°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m RoHS Compliant 0.1 s -
RS Stock No. 621-2158
BrandRS PRO
HK$52.61
Each (In a Pack of 5)
units
K 2mm 1m +250°C Teflon PTFE - Cable 1m RoHS Compliant 0.7 s -
RS Stock No. 397-1264
BrandRS PRO
HK$249.66
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m IEC - -
RS Stock No. 809-1010
Mfr. Part No.NTC030HP00
BrandCarel
HK$127.68
Each
units
- - - - - - - - - - Cables
RS Stock No. 219-4545
BrandRS PRO
HK$207.56
Each
units
K - 50mm +100°C - - Miniature Plug 2m IEC - -
RS Stock No. 847-9729
BrandRS PRO
HK$167.33
Each
units
K 1/0.3mm 5m +250°C - - Miniature Plug 5m ANSI - -
RS Stock No. 219-4652
BrandRS PRO
HK$478.82
Each
units
N 3mm 300mm +1300°C Nicrosil Alloy - Cable 1m IEC - -
RS Stock No. 310-6628
BrandDigitron
HK$229.03
Each
units
T - - +250°C - - Miniature Plug 10m - 0.5 s -
RS Stock No. 611-7788
BrandRS PRO
HK$47.76
Each
units
PT 100 - 5mm +500°C Platinum - Solder - - 0.1 s -
RS Stock No. 621-2423
BrandRS PRO
HK$697.38
Each
units
K 6mm 400mm +800°C 310 Stainless Steel - Connection Head - RoHS Compliant 2.2 s -
RS Stock No. 408-1069
Mfr. Part No.89 750 150
BrandCrouzet
HK$951.11
Each
units
- - - +40°C - - Connection Head - - - -
RS Stock No. 290-5036
BrandRS PRO
HK$303.50
Each
units
K 1/0.2mm 40mm +150°C Aluminium Foil Backing, Silicone Rubber - Cable 1m IEC - -
RS Stock No. 237-1613
BrandRS PRO
HK$295.94
Each
units
PT 100 6mm 35mm +250°C Stainless Steel - Lead Wire 1m - - -
RS Stock No. 444-1281
BrandRS PRO
HK$462.06
Each
units
K 0.5mm 250mm +1100°C Stainless Steel - Miniature Plug - IEC - -