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. 814-0137
BrandRS PRO
HK$78.05
Each
units
K 1/0.2mm 1m +250°C - - - Miniature Plug 1m ANSI -
RS Stock No. 762-1143
BrandRS PRO
HK$358.14
Each
units
PT 100 3mm 50mm +200°C Stainless Steel - - Lead Wire 1m - -
RS Stock No. 443-7967
BrandRS PRO
HK$326.98
Each
units
K 0.5mm 150mm +750°C Stainless Steel - - Miniature Plug - IEC -
RS Stock No. 338-9491
BrandRS PRO
HK$421.59
Each
units
PT 100 - - +70°C - - - Cable Gland - - -
RS Stock No. 237-1663
BrandRS PRO
HK$342.49
Each
units
PT 100 4mm 150mm +250°C Stainless Steel - - Lead Wire 1m - -
RS Stock No. 814-0178
BrandRS PRO
HK$90.17
Each
units
PT 1000 2mm - +500°C - - - Solder - RoHS Compliant -
RS Stock No. 621-2221
BrandRS PRO
HK$355.49
Each
units
K 6mm 175mm +1100°C Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 611-7873
BrandRS PRO
HK$210.31
Each
units
PT 100 1.5mm 8mm +650°C Platinum - - Solder - - 0.4 s
RS Stock No. 151-271
BrandRS PRO
HK$485.44
Each
units
T 1.6mm 100mm +250°C Constantan, Copper - - Cable 1.5m BS -
RS Stock No. 387-9792
Mfr. Part No.R9-1661-250
BrandReckmann
HK$614.60
Each
units
K 0.5mm 250mm +1100°C - - - Miniature Plug - - -
RS Stock No. 621-2322
BrandRS PRO
HK$302.02
Each
units
K 40 → 50mm 2m +1100°C 316 Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 621-2265
BrandRS PRO
HK$170.25
Each
units
J 6mm 2m +350°C Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 788-7132
BrandRS PRO
HK$237.06
Each
units
PT 100 - 30mm +150°C - - - - 1 m, 1mm - -
RS Stock No. 548-8657
Mfr. Part No.902130/10-402-1001-1-6-300-254/391,
BrandJumo
HK$1,422.47
Each
units
PT 100 6mm 300mm +400°C Stainless Steel - - Connection Head - - -
RS Stock No. 327-4945
Mfr. Part No.902044/20-380-1003-1-8-50-104-26/000
BrandJumo
HK$1,129.94
Each
units
PT 100 8mm 50mm +270°C Stainless Steel - - Standard Plug - - 45 s (Water)
RS Stock No. 471-1833
Mfr. Part No.80PK-24
BrandFluke
HK$1,544.39
Each
units
K 3.175mm 215.9mm +816°C Stainless Steel - - Miniature Plug 1m - -
RS Stock No. 443-7973
BrandRS PRO
HK$326.04
Each
units
K 0.5mm 250mm +750°C Stainless Steel - - Miniature Plug - IEC -
RS Stock No. 547-7792
BrandRS PRO
HK$1,012.19
Each
units
K 6mm 2m +250°C 316 Stainless Steel - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 236-4255
BrandRS PRO
HK$456.85
Each
units
K 6mm - +250°C Stainless Steel - - Miniature Plug 1m IEC -
RS Stock No. 847-1113
BrandRS PRO
HK$486.17
Each
units
K 0.5mm 150mm +1100°C Stainless Steel - - Cable 100mm ANSI -